RE: [RCSE] one more comment about zooming, and then I swear I'll stop
Are we talking braided or mono line? I've never launched off braided line, but I understand there's a big difference in the best technique due to the lack of stretch. There is also a difference in technique between a F3B winch launch using mono and a 2-man F3J tow on mono. The 2-man tow has much more power available and the contest penalises time spent on tow, so the launch setups tend to use less flap and more speed up the line. The combination of the higher speed and shorter lines mean things happen more quickly, which favours a shorter shallower dive. With mono on a F3B winch you definately want to push right over to dive nearly straight down the line, and if you've got the right line there's enough stretch that you have the time to do so. It's still common to see people going too steep or over diving, and this often leads to hooking the chute (which is not good as it severely reduces the launch height...). Ciao - Chris ** Chris Kaiser (mailto:[EMAIL PROTECTED]) Auckland, NEW ZEALAND -Original Message- From: James V. Bacus [mailto:[EMAIL PROTECTED]] Sent: Friday, 19 July 2002 5:03 p.m. To: [EMAIL PROTECTED] Subject: Re: [RCSE] one more comment about zooming, and then I swear I'll stop At 11:31 PM 7/18/2002, you wrote: Only if you push the elevator in a rather leisurely way. The nose-over should be as quick as your guts/reflexes allow. I can flick it off the line smoother than that and still preserve almost all my forward acceleration up the line. The energy release is smooth and fluid and so is the path of my model, the nose of the model never points towards the ground. This launch style is not unique, I see guys doing it like this all the time, with great success. I still don't believe there is any gain at pointing your model down the line and pulling it towards the ground during the zoom of a winch launch. I could do the maneuver you describe as quick as the next guy, but not only is it high risk, there is no gain to it. The transition can't be done quick enough at the tension I am pulling for any gain. Such is my experience, we'll just have to respectfully disagree. I wish we had the opportunity to fly together and explore this on the field with a strong winch and some stiff moldies, instead of online. Jim Downers Grove, IL Member of the Chicago SOAR club, AMA 592537LSF 7560 Level III ICQ 6997780R/C Soaring Page at www.jimbacus.net RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED] RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED]
[RCSE] 2002 F3B Series, Contest 2
Hi all, the second contest in the 2002 JR/Airsail F3B series (North Island, New Zealand) took place on May 18 19 at a new (for the series) venue near Havelock North. Thanks to the Hawkes Bay Radio Fliers for hosting us, providing a great field, great hospitality, and for turning up in numbers to support the event. The series has a new web address, however the usual format with full results and a write-up hasn't changes. Check it out at: http://www.kaiser.net.nz Fastest speed time was 16.98 seconds by Dave Larsen, best distance was 23 legs by Chris Tank. Congratulatins to Lewis Willams who lowered the NZ junior speed record to 23.55 seconds. This is becoming a regular event now, and with around 7 years left as a junior I'm sure Lewis hasn't finished with those records yet! Results Summary 1 Dave Larsen Ellipse 2V 11522.8 2 Peter Williams Cobra 11047.9 3 Chris KaiserEllipse 2V 10845.7 4 Chris Tank Cobra 10491.4 5 Aneil Patel Ellipse 2V 10413.7 6 David James Pulse 10238.5 7 Wayne BilhamPulse 10221.7 8 Kevern Oliver Ellipse 3CAM 9869.5 9 Ted Bealing Ellipse 3CAM 9350.0 10 Warwick Gatland Ellipse 2V 9257.1 11 Lewis Williams Captain Nitro9117.8 12 Ken Duffel Ellipse 2V 9099.3 13 Kevin Botherway Ellipse 2V 9031.6 14 Andrew Stiver Ellipse 2V 8573.8 15 Richard ThompsonPike Extreme 8487.4 16 Merv Malcomson Cobra8338.7 17 Harvey Stiver Sapphire 7631.6 18 Aaron BilhamMinty1875.6 Ciao - Chris ** Chris Kaiser (mailto:[EMAIL PROTECTED]) Auckland, NEW ZEALAND RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED]
RE: [RCSE] 8103 vs. 10X
There's also the small detail that neither the JR 8103 or Futaba 8U let you decouple the elevator trim between launch/thermal/speed modes. May not be a big deal for TD stuff off braided line, but for F3B launches off mono line those 2 clicks of up-trim you put in to just float around in light lift can change the next launch from awesome to snap-roll. Also a couple of clicks of down-trim to help penetrate into the wind can mean the difference between tracking straight down the course or diving for the ground during a speed run. The mainstream radios such as the 8103 and 8U actually do more than most people will ever need. It's really a lot of little things that make the top-end radios better and many people wouldn't consider the extra price worth it. The way I look at it, my 9Z cost less than one F3B airframe and will control/outlast many models. I consider it an investment. Ciao - Chris ** Chris Kaiser (mailto:[EMAIL PROTECTED]) Auckland, NEW ZEALAND http://rcmodels.co.nz/clubs/asfcnz -Original Message- From: Jim Bacus [mailto:[EMAIL PROTECTED]] Sent: Thursday, 15 November 2001 11:13 a.m. To: [EMAIL PROTECTED] Subject: Re: [RCSE] 8103 vs. 10X At 02:56 PM 11/14/2001, James Osborn wrote: I am curious what it is you need to do that you found the 8103 was not able to accomplish? Please respond to the exchange; inquiring minds want to know. 1) The camber and landing butterfly/crow are shared by the throttle stick and moded with a switch. I want camber on the slide bar where it should be, and landing on the throttle stick where it should be, both active simultaneously. I know I could have a preset camber switch with the 8103, I don't want that, I want camber that I can vary. 2) I want to be able to handle a six wing setup without using a Y harness. 3) I wanted the two extra channels for my scale ships so I didn't have to tie channels together for the tow release and retracts. Jim Downers Grove, IL Member of the Chicago SOAR club, AMA 592537LSF 7560 Level III ICQ 6997780R/C Soaring Page at www.jimbacus.net RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED] RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED]
RE: [RCSE] DS question
Strictly speaking, both versions are correct depending on your perspective... :-) If you're measuring the velocityrelative to the pilot, i.e. the ground speed of the model, then version 1 is correct. However if you're measuring the air-speed of the model then version 2 is correct. In reality the model doesn't care about the ground unless it hits it, while it has to fly through the air all the time and hence it's behaviour is totally determined by it's airspeed. Therefore version 2 is a far better description of how DS works: the aircraft is actually loosing air-speedin both the top and bottom turns, and gainingair-speed as it transits the boundary zone in each direction. What causes the confusion is thatmostfliers tend tojudge the speed of their models relative to their fixed position, and from thisperspective the model seems to really accelerate around the top turn. In fact this is simply another instance of the infamous 'down-wind turn' myth - althoughthe model's speed relative to the ground-based pilot has increased (because it's now flying with the wind rather than into it),the model's actual airspeed hasn't changed. It's easy to see that it's not the top turn adding the energy by cutting it out of the circuit altogether - start on the front side, drop into the back side, turn and exit straight back out to the front side. If the site is DS'able and you get it right the model will end up out the front higher and/or faster than it started. You probably already do this to find the best spot when feeling out a new DS site or testing the conditions. Ciao - Chris **Chris Kaiser (mailto:[EMAIL PROTECTED])Auckland, NEW ZEALANDhttp://rcmodels.co.nz/clubs/asfcnz -Original Message-From: Mike Bailey [mailto:[EMAIL PROTECTED]]Sent: Monday, 24 September 2001 11:38To: [EMAIL PROTECTED]Cc: Joe Jan WurtsSubject: [RCSE] DS question My friend and are having a disagreement about how DS works. Can you guys help straighten us out? Both versions are to be flown in a horizontal pattern following the back side of the hill. Definition: Boundry layer = the "line" where the air is moving on one side and the air is mostly still on the other side. Version 1 The gain in velocity is at thetop of the circuit. This would be the point of the circuit closest to the front side of the hill. This point is at the boundry layer. If the wind speed is 25 and drag is discounted the velocity gain would be 25 per circuit. Version 2 The gain in velocity is as you pass through the boundry layer and you have to pass through the boundry layer. These points are between the top and bottom turns. The top turn is past the boundry layer towards the front of the hill and the bottom turn is below the boundry layer towards the bottom of the hill on the back side. If the wind speed is 25 and drag is discounted the velocity gain would be 25 as you pass from the moving air to non-moving air and 25 as you pass from non-moving air to moving air. This would equal 50 gain per circuit. We will accept airplane tickets to Parker Mtn so we can test this at a prime location with Joe W looking after us ; ) Mike
RE: [RCSE] Battery Charging question
We're talking 3AH cells being charged at 0.45A - that's a rate of only 0.15C. I doubt a standard 'dv/dt' type peak detection would work at that low a rate because 'dt' becomes large which makes the dv/dt very small. I'm not sure what algorithms the modern digital chargers use, but I wouldn't trust any form of peak detection at that low a charge rate. The good side is that the batteries shouldn't be damaged by overcharging at that rate. If the charger automatically limited itself to 0.45A then I suspect the cells aren't too healthy (very high internal resistance). If you limited the current manually then either manually stop the charge at Red's suggested 140% capacity, or try a higher charge rate where the peak detection has a better chance of working - but keep an eye on it as overcharge at higher rates can damage batteries. Ciao - Chris ** Chris Kaiser (mailto:[EMAIL PROTECTED]) Auckland, NEW ZEALAND http://rcmodels.co.nz/clubs/asfcnz -Original Message- From: Red Scholefield [mailto:[EMAIL PROTECTED]] Sent: Sunday, 23 September 2001 21:52 To: [EMAIL PROTECTED] Subject: [RCSE] Battery Charging question This is typical for some surplus cells. The peak is missed, particularly with Ni-MH cells. If you input 140% of the rated capacity you know the pack is fully charged. I would not recommend using the automatic mode for Ni-MH, Use the manual mode where you can set the peak resolution to the finer setting. Good Luck. Red Scholefield AMA 951 IMAA 18939 District V Date: Sat, 22 Sep 2001 17:12:30 -0700 From: Ed Berris [EMAIL PROTECTED] Subject: [RCSE] Battery charging question I built a four cell pack using some surplus 3000mah NMH cells. I used my Robbe Infinity II charger in the automatic mode to charge this pack. The charger showed that I had put 5500Mah into the cells after 13 hours of charging at 0.45A. The question is how is it possible to pump 5500Mah into 3000Mah cells? As you would expect, the pack was warm (not anywhere near hot) when I removed them from my charger. The peak detector had not kicked off when I finally decided to remove them from charge. How do I know if I got a full charge if the peak detect circuit did not detect a full charge? Inquiring minds want to know, Ed RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED] RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED]
[RCSE] F3B Series, Contest 4 Results
Hi all, the fourth contest in the 2001 JR/Airsail F3B series (North Island, New Zealand) took place over the weekend. Great weather, apart from what seems to have become the standard light crosswind/downwind conditions. As usual full results and a write-up are on the series website at: http://www.rcmodels.com/gliders/f3bseries Fastest speed time was 18.00 by Dave Larsen, best distance was 22 legs by Peter Nola. Results Summary 1 Dave Larsen Ellipse 2V 11933.7 2 Chris KaiserEllipse 2V 11073.7 3 Peter Nola Ellipse 3CAM10594.5 4 Les StockleyScar10579.7 5 Dave Morgan Ellipse 2V 10098.7 6 Aneil Patel Ellipse 2V 10087.2 7 David James Pulse 10019.7 8 Lewis Williams Captain Nitro 9182.9 9 John DolphinSangoma 9007.7 10 Wayne BilhamPulse 8489.0 11 Chris Tank Cobra 8448.9 12 Warwick Gatland Ellipse 2V 8375.2 13 Merv Malcomson Mach One7650.0 14 Peter Williams Scar4442.2 15 Ken Duffell E2V / Scorpion 4250.0 16 Sharn DaviesRicochet3371.7 Ciao - Chris ** Chris Kaiser (mailto:[EMAIL PROTECTED]) Auckland, NEW ZEALAND http://rcmodels.co.nz/clubs/asfcnz RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED]
RE: [RCSE] DLG Aileron flutter.
Hah - that'll teach you for building lighter than me! Recommended solution is to mass-balance the ailerons with a couple of ounces of lead at the tips. Failing that leave it as is and we'll run a sweepstake at the Nats on whether it holds together. :-) Ciao - Chris ** Chris Kaiser (mailto:[EMAIL PROTECTED]) Auckland, NEW ZEALAND http://rcmodels.co.nz/clubs/asfcnz -Original Message- From: Peter Williams [mailto:[EMAIL PROTECTED]] Sent: Thursday, 30 August 2001 9:01 p.m. To: [EMAIL PROTECTED] Subject: [RCSE] DLG Aileron flutter. Hi Guys. I got just the slightest hint of flutter on my DLG todayit was windy however. I suspect the culprit was the outboard aileron. Just a slight buzz on one launch (and a good one If I say so myself). So now some questions Has anyone successfully used the Hitec feather HS 50 servos for ailerons for DLG. I have the servos (CS10s) pretty far out in the wing already however I want to go out further. (Ailerons 22long servo out about 10 from root). The wing layup is 1.6 oz cloth top and bottom and so I'm thinking of maybe another layer over the ailerons maybe 3/4 oz top and bottom 1wide. Any other suggestions for this problem. Best Regards Peter Williams RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED] RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED]
RE: [RCSE] RCSD question
Paypal recently went international. I used it a month or two back to buy the 'Plane Geometry' software (soaring connection just for Gordy...) and had no problems at all. Ciao - Chris ** Chris Kaiser (mailto:[EMAIL PROTECTED]) Auckland, NEW ZEALAND http://rcmodels.co.nz/clubs/asfcnz -Original Message- From: John Ensoll [mailto:[EMAIL PROTECTED]] Sent: Tuesday, 10 July 2001 18:05 To: [EMAIL PROTECTED] Cc: soaring@airage. com Subject: RE: [RCSE] RCSD question Hi Brett, I believe that Pay pal is States only. I still say that RCSD should accept an international system like Visa. Those that don't miss out on a lot of business. Ask Karlton Regards, John Ensoll. [EMAIL PROTECTED] LSF 1383 Level II Builder, Flier, Flyfisherman, in retirement. http://www.canterburysailplanes.co.nz -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Sent: Wednesday, July 11, 2001 5:23 PM To: [EMAIL PROTECTED]; Steven Meyer; [EMAIL PROTECTED] Subject: RE: [RCSE] RCSD question What about Pay Pal? They could charge an bit extra for the amount that Pay Pal takes (I assume they take a cut). Brett At 05:15 PM 7/10/01 +1200, John Ensoll wrote: I live in New Zealand Regards, John Ensoll. [EMAIL PROTECTED] LSF 1383 Level II Builder, Flier, Flyfisherman, in retirement. http://www.canterburysailplanes.co.nz -Original Message- From: Steven Meyer[mailto:[EMAIL PROTECTED]] Sent: Wednesday, July 11, 20014:02 PM To: [EMAIL PROTECTED] Subject: Re: [RCSE] RCSDquestion At 08:26 PM 7/10/2001 -0700, Dick Barkerwrote: They would have a lot more subscribers including me if they took visa. :-) -- Dick Barker Seattle, WA - Turning HLG Around - What is the going opinion of the RC Soaring Digest which currently has an annual subscription rate of $30 in theUS. Thanks, Dave Jeez, Cost 0.34plus check. __ __ Brett Jaffee: [EMAIL PROTECTED] Brett's Slope and Power Home Page: http://home.earthlink.net/~jaffee OnTheWay Quake 2 server utility: http://www.planetquake.com/ontheway The Unoffical Extra 300 Home Page: http://members.nbci.com/bjaffee/extra300/ RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED] RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED]
[RCSE] F3B Series, Contest 2 Results
Hi all, the second contest in the 2001 JR/Airsail F3B series (North Island, New Zealand) took place over the weekend. Despite a weather forcast that had people hurriedly digging out their wet weather gear we actually got in five uninterrupted rounds of F3B over the two days. As usual full results and a write-up are on the series website at: http://www.rcmodels.com/gliders/f3bseries Fastest speed time was 17.59 by Chris Kaiser, best distance was 21 legs by Aneil Patel. Results Summary 1 Chris KaiserEllipse 2V 14666.7 2 Dave Larsen Ellipse 2V 14643.4 3 Aneil Patel Ellipse 2V 13644.5 4 Wayne BilhamPulse 12731.7 5 Kevern Oliver Ellipse 3CAM12709.1 6 David James Pulse 12474.0 7 Ken Duffell Ellipse 2V 12250.4 8 Peter Williams Scar11390.2 9 Ted Bealing Ellipse 3CAM 8534.7 10 Lewis Williams Captain Nitro4752.1 11 Angus Macdonald CV4 4180.5 Ciao - Chris ** Chris Kaiser Auckland, NEW ZEALAND http://rcmodels.co.nz/clubs/asfcnz RCSE-List facilities provided by Model Airplane News. Send subscribe and unsubscribe requests to [EMAIL PROTECTED]
RE: [RCSE] Exclusive, Secret Photos of Jim Bacus and SAL
Also at: http://members.chello.at/pirker/model/zach_2001.htm http://pws.prserv.net/stark/bobo/wzach.htm Ciao - Chris ** Chris Kaiser Auckland, NEW ZEALAND http://rcmodels.co.nz/clubs/asfcnz -Original Message-From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]Sent: Thursday, 5 April 2001 04:44To: Paul KlissnerCc: [EMAIL PROTECTED]Subject: Re: [RCSE] Exclusive, Secret Photos of Jim Bacus and SAL You can see some pics at http://www.lomcovak.cz/rch/vypich00/vyp01_1.htm Ed http://www.escomposites.com Paul Klissner [EMAIL PROTECTED] wrote: Any pictures of the whole SAL fully assembled and or flying?I'm assuming there is a general awareness in the communityof what one looks like in its full grandeu, which puts those droolablecloseups (of the plane, not of Jim) in context.So If there are other URLs with pics of the SAL could someoneplease post them?...And let's not forget Sal DeFransisco "famous" on this alias.So from the e-mail title, I expected to see pictures of those two chuming it up, drinking beer and flying,, havingnot heard of this plane before :)Anyway Jim used to fly an Stork from NSP, which I still fly, so I knowhe has good taste.-PaulBill Harris wrote: Neat pics of the SAL. Put it on my "must get" list. So that's Jim. Somehow my mental image of him was that of a Magoo... --Bill From: Steven Meyer <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] Subject: [RCSE] Exclusive, Secret Photos of Jim Bacus and SAL Date: Wed, 04 Apr 2001 00:54:09 -0500 I stopped at Jim Bacus's Home last weekend to drool over his new, SAL, SideArm Launch, Glider by Wolgang Zach. What incredible construction. It was quite interesting to hold the wing up to the light and see the internal structure. Check them out for yourself. http://www.SOARchicago.com/SAL/FrameSet.htm Now that I'm back on the Internet. Lost my DSL due to NorthPoint collapse. I'm now using a dial up from my server. Struggling along with this modem thing. :-) Steve Meyer http://SOARchicago.com/stmeyer/ [EMAIL PROTECTED] S.O.A.R. Web Page http://SOARchicago.com/ Now with Message Boards http://SOARchicago.com/discus/ RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] _ Get your FREE download of MSN Explorer at http://explorer.msn.com RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] Do You Yahoo!?Yahoo! Mail Personal Address - Get email at your own domain with Yahoo! Mail.
RE: [RCSE] Profi 4000 for HLG's?
One thing to be wary of when hand-launching using expensive radios is that you don't let go with the wrong hand... :-) Yeah, I know - I thought the same. Been hand-launching for years, have now done a lot of discus throwing, never once come close to throwing the radio. Until a couple of weeks ago when I launched my 8UAP while demonstrating the discus thow technique :-( I'd just put on sunblock and my hands were a bit slippery - wasn't a problem until I really went for it on a throw... Luckily I managed to get to the radio while my model was still resonably high, amazingly it was still working fine and I landed the model no problem, even more amazingly not a single one of the switches was broken or damaged! Futaba owners will know how incredible this is! In fact the only damage was that the battery had broken out one end of it's internal box, and since all the bits of plastic were still inside I was able to glue them back together :-) BTW, I'd just bought a Futaba 9Z as my primary radio, but had already decided NOT to use it for hand launch. You can be sure I haven't changed my mind :-) Ciao - Chris ** Chris Kaiser Auckland, NEW ZEALAND http://rcmodels.co.nz/clubs/asfcnz -Original Message- From: Tim Vandenheuvel [mailto:[EMAIL PROTECTED]] Sent: Monday, 2 April 2001 23:31 To: [EMAIL PROTECTED] Subject: [RCSE] Profi 4000 for HLG's? Are any of you HLG guiders using a Profi 4000? Is the TX managable with one hand during the launch? TIA Tim _ Get your FREE download of MSN Explorer at http://explorer.msn.com RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
RE: [RCSE] DLG Wingtip Peg Optimization?
From: Charles French [mailto:[EMAIL PROTECTED]] I'm using a 1/8 carbon rod about 3/4 inch on each side. I can't tell if there is any difference. Not scientific but Either you've got armoured fingertips, or you're not throwing particularly hard :-) I went from holding the tip to a 1/8" carbon rod - definately helped the throw but I could only do a couple of hard throws before it became really painful. Changed to a 1/4" carbon tube peg and can now throw even harder without the fingertip pain. One thing that has helped me was to put the peg far enough down the wing so that only the first joint of my fingers would barley reach it. My first wing the peg was at my second joint and I would have trouble releasing the plane at the right time because my fingers were curled around the peg to get a hard throw. Try a larger peg, eg 1/4" carbon tube (tailboom offcut?). As well as spreading the loading on the fingertips better (less pain :-), I found it also made the release easier and more controllable. The drag appears to be negligible compared to the gain in launch speed. I certainly can't tell any difference in flight. Ciao - Chris ** Chris Kaiser Auckland, NEW ZEALAND http://rcmodels.co.nz/clubs/asfcnz RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
RE: [RCSE] C.N.C.
From: Marc Webster [mailto:[EMAIL PROTECTED]] Hey Pat, I have been working on a design for a CNC foamcutter for the past few months. ... have also attemted to eliminate the need for the cutting bow (hope it works). Instead as the wire changes length with wing tapor and z height, the wire is payed out and retracted as needed. If this does not work, I have still made provisions for a bow. I presume you're calculating the required wire length and driving a stepper to change the length? Wouldn't it be simpler to maintain a constant tension in the wire? This could be done by terminating the wire on a drum driven directly by a DC motor. The motor would operate stalled most of the time, with it's stall torque (and hence wire tension) controlled by the applied voltage. Just a thought. Ciao - Chris ** Chris Kaiser Auckland, NEW ZEALAND http://rcmodels.co.nz/clubs/asfcnz RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
RE: [RCSE] Futaba 9Zap
Gee Peter, you've only had it a week or so! Does Helen know you want to butcher her flash new radio? BTW - which switches are you looking at changing and why? Ciao - Chris ** Chris Kaiser Auckland, NEW ZEALAND http://rcmodels.co.nz/clubs/asfcnz -Original Message- From: Peter Williams [mailto:[EMAIL PROTECTED]] Sent: Tuesday, 13 March 2001 12:00 To: [EMAIL PROTECTED] Subject: [RCSE] Futaba 9Zap Hi Guys I have a 9Zap and I want to swop the switches on the top corners for each other. The wiring doesn't allow electrical swapping of the switches without extending the wiring on the switch wiring harness. I wonder if there is a way in the software of swapping the switch assignments. I assume this would be hidden or at the system level as opposed to the normally accessed user level. Can anyone with experience of this please contact me. Regards Peter Williams RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
RE: [RCSE] Mantis Question??
From: mark browning [mailto:[EMAIL PROTECTED]] Hell, they ride sheep don't they? MB That's the Australians. Ciao - Chris ** Chris Kaiser Auckland, NEW ZEALAND http://rcmodels.co.nz/clubs/asfcnz From: "Chris Kaiser" [EMAIL PROTECTED] To: "James V. Bacus" [EMAIL PROTECTED], [EMAIL PROTECTED] Subject: RE: [RCSE] Mantis Question?? Date: Fri, 2 Mar 2001 11:22:13 +1300 From: James V. Bacus [mailto:[EMAIL PROTECTED]] At 02:49 PM 3/1/2001, Chris Kaiser wrote: From: Charles Miller [mailto:[EMAIL PROTECTED]] If you fly a Mantis, Do yo uhave to drive a AMC Gremlin Or a Pacer??? Probably not - almost any US car would qualify :-) ROFL, a Mantis will never rest in the back of my C5 Vette. What kind of cars do they make in New Zealand? Woolly white ones :-) Actually we don't make any cars here - we import mainly Japanese and Australian models. Ciao - Chris ** Chris Kaiser Auckland, NEW ZEALAND http://rcmodels.co.nz/clubs/asfcnz RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] _ Get your FREE download of MSN Explorer at http://explorer.msn.com RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] JR / Airsail F3B Series, Contest 6 Results
Hi all, The last event (contest 6) of the Y2K JR/Airsail F3B Series was held last weekend at Palmerston North. The weather wasn't the best - real windy Saturday and rain all day Sunday, so we only managed to fly 2 rounds. As usual, full results and a writeup are on the Series web site at: http://www.rcmodels.com/gliders/f3bseries/ 1 Dave Larsen ASFC Ellipse 2V 6000.0 2 Craig Dawson AucklandSoar Ellipse 2V 5514.7 3 David James CDSF Pulse5292.8 4 Peter Williams KapitiMillennium 5218.3 5 Warwick Gatland MPMAC Ellipse 2V 5117.0 6 Ted Bealing AucklandSoar Ellipse 3CAM 4981.6 7 Kevern OliverWMAC Ellipse 3CAM 4861.4 8 Scott Chisholm CMAC Ellipse 3CAM 4564.7 9 Gavin TweedieCMAC Escape 4485.6 10 Aneil Patel AucklandSoar Vindaloo 4089.6 11 Wayne Bilham CDSF Pulse3630.7 12 Keith Elliot WMAC Weagle 3561.2 13 Harvey StiverHBRF Mach One 3500.2 14 Ken Duffell HBRF Scorpion 2936.2 15 Chris Kaiser ASFC Ellipse 3CAM/2V 2581.5 16 Jimmy Turner Ohakea MACHornet 2230.8 17 John Dolphin TGA Sangoma 1266.1 Ciao - Chris ** Chris Kaiser Auckland, NEW ZEALAND http://www.rcmodels.com/clubs/asfcnz/ RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
RE: [RCSE] Flying Special
From: James V. Bacus [mailto:[EMAIL PROTECTED]] http://www.rc-modell.de/klemm/index.htm Could anyone tell me more about the model listed on the web page above. It sure looks interesting but I can't read German. Interesting to see the "Flying Special" is still being made, although the design looks much nicer than the original. There was a review of the original in, I think, an early "Silent Flight" - must be around 8 years ago now. The concept back then was for a multi-piece model - tails, tip panels, center sections, even fuse pods and tail booms, were seperate pieces and available in a couple of sizes, allowing them to be mixed and matched to create different sized and proportioned models. The aim, I believe, was to enable a flier to taylor their model to their own particular liking, rather than to optimise the design for contest work. From what I can understand from the website posted above, the latest incarnation retains the concept. Hence while it's probably beautifully built and no doubt flies very well, I doubt it would be a good choice for a serious contest ship. Your earlier email was regarding the Cobra - there's a web page for the supposed US manufacturer however it hasn't changed for months: http://www.mtcomposites.com/ Do you want a model for F3J, F3B, F3F, TD, or something else? For F3J there are many models out there that are probably better suited to the contest than the Cobra. For F3B there are various models that will do the tasks as well or better, however the trick is finding one that will also launch like the Cobra... For F3F most of the top guys seem to prefer other models to the Cobra. You'll know what works in TD much better than me. If you're not specifically after contest performance, but just want a model that flies like the Cobra because you like it, then I guess you'll just have to keep looking... In the meantime, here's some links to various manufacturers or suppliers of F3x type models. http://www.chk-modelle.de/ http://www.web.netactive.co.za/~goodrum/compcr.htm http://www.f3x.com/ http://www.euromodell.de/ http://www.soarhigh.co.uk/ecg/ http://perso.club-internet.fr/designev/element2.htm http://www.hkm-modellbau.de/hkm/index0.html http://www.shredair.com/ http://www.tun.ch/ Happy browsing! Ciao - Chris ** Chris Kaiser Auckland, NEW ZEALAND http://www.rcmodels.com/clubs/asfcnz/ RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
RE: [RCSE] DS Cherry popped!
From: James V. Bacus [mailto:[EMAIL PROTECTED]] I just DSed my mini ellipse and Bruces Sledikin, no crashes and I have One thing to watch when DS'ing the Mini Ellipse is the front wing attachment - after just one DS session at our local site a mates almost new Mini Ellipse has stress cracks in the fuse around the hole where the front wing pin seats. Can't really fault the plane as these airframes were never designed to take the sustained high-G's that DS'ing can impart in good conditions! the biggest SEG you could imagine. Im so hooked, you guys that havent done this yet have got to try. There are no words I have at the moment to describe this, emotions are high! Welcome to the club - there ain't no goin' back now! Taking lots of pictures. Live from Parker. How about real-time streaming video... :-) Ciao - Chris ** Chris Kaiser Auckland, NEW ZEALAND http://www.rcmodels.com/clubs/asfcnz/ RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
RE: [RCSE] Throwing stick?
From: David A. Enete [mailto:[EMAIL PROTECTED]] Well, here's another look at it. For the discus-style planes with pins in the outboard wing panels, use a short extension device with a release mechanism. Maybe like hunting bow releases. The increase in velocity with even a short extension on a discus-style launch would be incredible. Check the speed, direction, and attitude, then let it fly. Low-tech / high-tech option is to use an extension with formed fingers from a pliable substance that will flex under a given amount of stress. Then figure out how much speed is needed to impart the stress and release the plane. I was thinking about this sort of thing when I started to get comments on wing launching HLG's following my launch analysis. How about building a model with a hollow carbon tube spar that runs right to the wing tip. Run a Kevlar string through the tube, attaching one end to the wing root (probably best to anchor it to a wing bolt that goes through or adjacent to the tube, so there's a solid link to the fuse). The other end of the kevlar string exits the tube at the wing tip and is what the launcher holds onto - sort of like a control liner. The technique would be a bit like an olympic hammer thrower... Some light elastic attached to the opposite wing tip and the kevlar would pull the string back inside the tube after release. There would be some non-trivial issues to be solved to make this work, not the least of which is the safety of everyone else on the field... :-) Ciao - Chris ** Chris Kaiser Auckland, NEW ZEALAND http://www.rcmodels.com/clubs/asfcnz/ RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
RE: [RCSE] Results from a HLG launch analysis
From: John Erickson [mailto:[EMAIL PROTECTED]] Chris, An excellent and thorough examination of the launch profile. Your formulas bear out what seems to be seen at the contests. Thank you for all your hard work! Thanks for the positive feedback! I would like to add another category: The effect of Ibuprofen. Is it best taken before or after a contest? :) Well, according to a website I found: "if you drink more than three alcoholic beverages a day, ibuprofen may increase the risk of stomach bleeding." Sounds like it's best avoided totally on contest days :-) Ciao - Chris ****** Chris Kaiser Auckland, NEW ZEALAND http://www.rcmodels.com/clubs/asfcnz/ From: "Chris Kaiser" [EMAIL PROTECTED] Hi all, A few weeks back I finally got around to writing a computer model of a RC HLG launch. Since the topic has come up again, it motivated me to format the results for the web. The results of interest to most people will probably be the effects of various throw speeds, throw angles, climb angles, pullup rates, etc. These are in graphical and table form. The recent discussion on drag also motivated me to modify my code slightly so I could extract and graph the various drag coefficients (induced, profile and parasitic) during the launch. The results are interesting... You can check it all out at: http://www.rcmodels.com/clubs/asfcnz/ I'd welcome any feedback. Ciao - Chris ** Chris Kaiser Auckland, NEW ZEALAND http://www.rcmodels.com/clubs/asfcnz/ RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
RE: [RCSE] Results from a HLG launch analysis
Mark, When I did the analysis versus mass (and also versus throw angle) I was aware that assuming a constant throw speed wasn't realistic, however I didn't have a better alternative. I like the approach you've presented and have redone the analysis versus mass and aspect for this throw model. The website has been updated with the new results. http://www.rcmodels.com/clubs/asfcnz/ You're right up to a point in saying that lighter models will inherently launch higher using this model. The results indicate that there is actually an optimal weight for a given design, and if you go much lighter then launch height suffers badly. However, with current construction techniques I don't think you can build down to this weight and still have a model strong enough to throw at full power (at least for a 1.5m span RC HLG). Also, the optimal weight for max launch height increases with wind speed, so now we can justify ballast for HLG's on the basis of launch as well as penetration when the wind gets up. Ciao - Chris ** Chris Kaiser Auckland, NEW ZEALAND http://www.rcmodels.com/clubs/asfcnz/ -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Sent: Wednesday, 16 August 2000 7:53 p.m. To: [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Subject: RE: [RCSE] Results from a HLG launch analysis Chris, Nice presentation. The only beef I have is the assumption of a given velocity independent of the glider weight. This is clearly inappropriate. I think a better assumption is to assume a fixed muscular energy output, which would correspond to fixed (maximum) muscle forces acting over some fixed throwing motion. This energy shows up as kinetic energy of the glider and the arm at the moment of release. E = 0.5 (m + m_arm) V^2 This gives the launch velocity in terms of glider mass m: V = sqrt( 2 E / (m + m_arm) ) I estimate m_arm = 1 kg as the effective mass of the hand and forearm, and E = 300 J seems like a reasonable energy for a strong throw. You can get fancier and assume that there is also a running speed which adds to the throw independent of the glider weight. In this case you would have V = sqrt( 2 E / (m + m_arm) ) + V_run Whatever. In your parametric variation of the glider weight, I suggest fixing m_arm and E, and set V from one of the relations above rather than fixing it. You'll find that lighter gliders launch inherently higher now, which I think is what most people observe. -- - Mark Drela RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
RE: [RCSE] Turn-around Peg Physics and Safety
if using a safety cable) And probably the most likely to need one also! i. Ease of portability? j. Ease of removal? Ciao - Chris ** Chris Kaiser Auckland, NEW ZEALAND http://www.rcmodels.com/clubs/asfcnz/ RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] RE: [RCSE] Three R's of Soaring,....I passed the final exam!!!
From: Cliff Schwinger [mailto:[EMAIL PROTECTED]] Im not sure if I was imagining things but it seemed that I could tell when I was launching into these oncoming bubbles of rising air - the sailplane seemed to climb a little smoother and higher than my previous normal launches! Does anyone know if this actually happens - do you get a little more launch height when you throw your sailplane into rising air? I guess this was most noticeable to me because I have probably been throwing into sink for the past year that I have been flying! Yes, it's a real (and useful) effect which a lot of people seem to miss. I've caught lots of thermals that were pointed out to me by someone throwing higher than normal. The amusing thing is that often the other flier would use their good launch height to range further looking for lift, not realising they were flying straight out of it. Ciao - Chris ** Chris Kaiser Auckland, NEW ZEALAND http://www.rcmodels.com/clubs/asfcnz/ RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
RE: [RCSE] Re: Soaring V1 #1217
Not sure if I saw the same ad or not. The one I saw showed a guy climbing up a tree to get the plane, then throws it off the top. It was a gray/silver polyhedral plane with a V-tail. The message was something about "freedom" or "serenity" - is that what we represent? =) That model is an Ellipse 2V, painted BMW Silver with a darker silver or charcoal canopy painted on. The flying was done by Dave Larsen and it was filmed near Auckland, New Zealand. Dave has actually written up the story behind the shoot and it's currently featured (with some pic's) on the Lomcovak website at: http://www.lomcovak.cz/eindex.html Definately worth a read! There's also a photo of the model in it's current revised color scheme in the Photo Gallery of our club webpage at: http://www.rcmodels.com/clubs/asfcnz/ (it's the one nearest the camera in the middle photo on page 2). The tip panels have been returned to their original white/red and it's sporting a new tail as the original was a bit heavy with a repair and the silver paint. Ciao - Chris ** Chris Kaiser Auckland, NEW ZEALAND http://www.rcmodels.com/clubs/asfcnz/ RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
RE: [RCSE] Sirius charger with 5 cell pack
Assuming you've got the Sirius Charge Pro, then yes. The Rx side does 3 to 6 cells, and the Tx side 4 to 8, so both outputs will do 5 cells properly. Actually, as far as I can tell all their chargers will do 5 cell packs. You can check out the spec's at their website: http://www.teleport.com/~sirius/ FWIW I run 5 cell packs in my F3B models and can confirm that the Sirius Charge Pro works just fine on them. It's now the only charger I use on my RC batteries. Ciao - Chris ** Chris Kaiser Auckland, NEW ZEALAND http://www.rcmodels.com/clubs/asfcnz/ -Original Message- From: Brian Iten [mailto:[EMAIL PROTECTED]] Sent: Wednesday, 10 May 2000 10:37 To: [EMAIL PROTECTED] Subject: [RCSE] Sirius charger with 5 cell pack Is a Serius Charger set up to charge 5 cell receiver packs properly? TIA Brian Iten RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
RE: [RCSE] 555/Futaba 8UAF
"but the 555 doesn't have enough channels to work the programmable aileron functions in my 8UAF's." Sure it does, read the appendix to Don Edburgs book. It's quite simple. Take a look at this also: http://www.users.uswest.net/~slickraft/slickraft2_5a.htm Pick your poison - soldering or programming 4 out of the 5 PMIX's available... Actually, you don't need to use any of the PMIX's. Set it up as a 4 servo wing, turn on the built-in flap-aileron and aileron-mixes at 100%, and you can use channels 1 5 as ailerons. All the other built-in mixes such as elevator-flap, launch, butterfly, etc. then work as usual. I use exactly this setup with a 555 for my HLG. Ciao - Chris ****** Chris Kaiser Auckland, NEW ZEALAND http://www.rcmodels.com/members/asfc/ RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
RE: [RCSE] [RCSE][F3B][F3F] Ellipse 3 CAM radio problem
From: Keith Groombridge [mailto:[EMAIL PROTECTED]] I am not an EV3 owner or flier but...I do mould my own models and have experienced similar problems to those being talked about. 1. Does the EV3 and Cobra use carbon cloth or tows in the construction of the fuz??? .I have used both carbon cloth and tows in the construction of fuzs in the past a suffered from shielding of the RX reception. I think the Cobra used to use carbon down the fuse, although I'm not sure. The Ellipses do not. 2. One of the responses to the first Email suggested swapping metal pushrods for carbon ones. IMHO this will make little, if any difference as carbon conducts in the same manner as metal and it can also act as a shield. I agree carbon versus metal pushrods will probably make little difference. 3. I have not experienced any problems with all carbon wings. However I do always use ferrite rings as has already been suggested. I have been told in the past that it is very important that for them to be fitted as close to the RX as possible to gain maximum effect. I've flown with carbon wings and metal/carbon pushrods for years without ferrite rings and without problems. This is the first time I've had these sorts of problems. As I originally posted, the only changes are FM versus PCM Rx and difference servos. 4. I was surprised to see people suggesting that a PCM RX might be the answer as this is not actually solving the problem, only getting around it. Agreed in principle, however it's been suggested that the problem is due to interaction between the servos and the Rx, and not actually an RF issue at all. Since I assume the FM Rx uses a standard decoder chip versus a microprocessor for the PCM, there is a real difference in this aspect of the Rx design and I can quite believe that may behave differently under some circumstances (e.g. power hungry servos on long leads). I have had problems with limited range in my models in the past, all of the above (i.e. carbon wings, pushrods etc) can be explanations but...in the end I would the only answer for worry free flying was to systematically work my way through checking EVERYTHING. Good luck The PCM Rx is an easy thing to try, so that's the first step. Based on a lot of the responses, I'm pretty confident that it'll do the trick. Thanks for the input. Ciao - Chris ** Chris Kaiser Auckland, NEW ZEALAND http://www.rcmodels.com/members/asfc/ RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
RE: [RCSE] RG15 question
If you are doing a speed run with an RG15 wing plane, does it help to give the wing a slight bit of reflex? If so how much? I know I should know this but in my old age I have forgotten. I fly an Ellipse 2V which uses a "modified" RG15 (not sure what the "mod" entails) and don't use any reflex. Two weeks ago we had a F3B speed practice day and I averaged just over 17s with this model, including two times in the 15 second range - it don't need no reflex... Ciao - Chris ** Chris Kaiser Auckland, NEW ZEALAND http://www.rcmodels.com/members/asfc/ RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
RE: [RCSE] Futaba 8u v-tail ?
I'm still learning how to use this 8uhfs of mine and I need some help. Ok here is what I'm trying to do. I have a full house glider with a v tail and I'm using the canned v tail mixer with rudder values set to zero. Then I'm using two p-mixers to mix in the rudder so that I can have rudder differential because the canned mixer doesn't have differential. This setup works great but now I want to have aileron to rudder coupling and at the same time have rudder differential. So I set up one more mixer (aileron -rudder) but now it only works the right side. Then when I turn on the link it works only the left side. Can I suspect the problem arises because you've set the rudder mix values to zero. How about trying this: Use the canned V-tail mix and set the rudder/elevator amounts to give you about what you want. Then use the ATV (servo travel adjustments) to decrease the up movement and increase the down movement to get the rudder differential you want. The problem now is you also have elevator differential (I actually live with this and don't find it a problem). Now use a P-mix to mix elevator to elevator with the link function on - by using a small positive amount of mixing with up-elevator you should increase the up travel, and a small negative amount with down-elevator should decrease the down-travel - without affecting the rudder differential. A single P-mix (with link on) should now effect aileron-rudder coupling. Hope this helps. Ciao - Chris ** Chris Kaiser Auckland, NEW ZEALAND http://www.rcmodels.com/members/asfc/ RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
