Re: [RCSE] RCSD question
Steven Meyer wrote: > Jeez, > > What's so hard about writing a check and dropping it in an > envelope? Cost 0.34 plus check. Right on Dude. My sentiments exactly, EXCEPT, is it ~soaring related~ to post such an answer on RCSE? I guess we'll have to check with Charlotte, or Louisville, or Atlanta, or Lake Michigan, or Filthia to find out if it is relevant... Now then, just so this is NOT interpreted as a flame, I humbly asked for Gordy's opinion on an article/review I wrote recently for RCSD regarding Bowman's Hobbies "JW".I feel so good about the people at RCSD (Jerry & Judy Slates), that not only do I give them the article for free, but I enclose my personal check for the subscription, AND I spend the extra 34 cents to get my check to them. This is one point that Gordy and I agree on (I think)it is kinda like giving back to the hobby a little bit that we've gained. One thing is for certainyou'll never see anything from me that is technical.. but, technically we're all having fun, and THAT is what counts. I would recommend RCSD to anyone for the knowledge and experience you'll gain from the many contributors (myself not included). If people want to buy pretty pictures and all the glossy advertisements, there are many publications they can throw your money at (and they accept VISA). But, at the end of the year, look to which source you really got your value/knowledge. Scott (I accept propane, butane, kerosene, gasoline, methanol, vegetable oil, WD-90, Spud-Gun 'Breck' Hairsprayanything that supports combustion (flames). Fire away. > > RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] RCSD question
In a message dated 07/10/2001 11:05:36 PM Central Daylight Time, [EMAIL PROTECTED] writes: > Jeez, > > What's so hard about writing a check and dropping it in an envelope? Cost > 0.34 plus check. > The tough part is getting the checkbook out of the bosses purse without having to listen to a running tally of how much money you've spent on your hobby, feigning concern about the rest of the budget having gone to hell :) At least with a credit card, you can do the dirty deed, and then mysteriously take the little lady out for dinner "just because I love you" Bill Wingstedt RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] RCSD question
At 08:26 PM 7/10/2001 -0700, Dick Barker wrote: 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 the US. >Thanks, >Dave Jeez, What's so hard about writing a check and dropping it in an envelope? Cost 0.34 plus check.
Re: [RCSE] Finishing a glass wing??
Yes, capping the ailerons with ply and the subtrailing edges with thickened epoxy will definitely add some strength to the wing. This will also keep moisture out which can cause the wing to de-laminate. This is the way to go if your going to be flying slope. Dave In a message dated 7/10/01 7:24:07 PM, [EMAIL PROTECTED] writes: << I would like to hear some of the pros and cons about whether or not the edges of the ailerons / flaps & back side of wing should be finished or left as open foam. It seems to me that if edges are sealed with (glass-epoxy or?? )it would structurally be a stronger wing and would help to stop any twist. I see a lot of wings unfinished. HELP!!! LEE >> RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
RE: [RCSE] RCSD question
And me too Regards, John Ensoll. [EMAIL PROTECTED] LSF 1383 Level II Builder, Flier, Flyfisherman, in retirement. http://www.canterburysailplanes.co.nz -Original Message- From: Dick Barker [mailto:[EMAIL PROTECTED]] Sent: Wednesday, July 11, 2001 3:26 PM To: [EMAIL PROTECTED] Subject: Re: [RCSE] RCSD question 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 the US. >Thanks, >Dave 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] Futaba Vs Profi: Yet another data point.
At 11:02 AM 7/9/2001 -0700, Karlton Spindle wrote: >Try it and report to the group if you would be so kind. OK, I suppose. I'm sure this will start some sorta flame war. Whatever. I took both my Futaba Super 8 and my Profi 3030 both fully charged and on trickle and a fully charged battery in a fuse. The fuse was aligned pointing directly away from me, i.e., I was looking at the end of the antenna wire. I walked back until the person helping noted that the rudder started twitching. I went back and forth to find the spot as best I could. I then paced off the distance to the fuse. I did this with the Futaba antenna collapsed, with the Profi 3030 without an antenna (Karlton said it wouldn't hurt the Profi to use it without the antenna screwed in) and with the antenna screwed in, but collapsed. In all chases the antenna was pointed at the fuse. The numbers are (a drum roll someone): Futaba 136 paces Profi 3030 without the antenna screwed in 29 paces Profi 3030 with the antenna screwed in 144 paces. I suppose what surprises me is the range that you can get without having the antenna out with either Tx. I have no idea if these data represent any sort of meaningful difference. So there. Bill -- Nobody cares if you can't dance well. Just get up and dance. Bill Johns Pullman, WA RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] RCSD question
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 the US. >Thanks, >Dave RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] Wait till you see the JUNE issue of RC Soaring Digest!
I beg to differ. Jim is well revered in SOAR. Jim flies and practices a lot. Our club has many great pilots. If he's not a club great he will soon be one. At 10:12 PM 7/10/2001 -0500, James V. Bacus wrote: At 08:30 PM 7/10/2001, [EMAIL PROTECTED] wrote: things I have observed from watching National Class soaring greats like Jim Bacus of Chicago area No I am not. I am not even a local club great. Jim Steve Meyer http://SOARchicago.com/stmeyer/ [EMAIL PROTECTED] S.O.A.R. Web Page http://SOARchicago.com/
Re: [RCSE] Finishing a glass wing??
I've seen lots unfinished. Don't think it is a structural issue. I have always sealed the raw edges on my wings mostly for protection from moisture. Flying contests you may get caught in the rain. It would take a little while for the water to get into the foam but I like the extra protection from the elements. Of course coating those raw edges will add some weight. Later... Lee Cox wrote: > > I would like to hear some of the pros and cons about > whether or not the edges of the ailerons / flaps & > back side of wing should be finished or left as open > foam. > It seems to me that if edges are sealed with > (glass-epoxy or?? )it would structurally be a stronger > wing and would help to stop any twist. I see a lot of > wings unfinished. HELP!!! LEE > > __ > Do You Yahoo!? > Get personalized email addresses from Yahoo! Mail > http://personal.mail.yahoo.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] Save Speedvision petition.
While this is not soaring related, in any way, it does touch upon the use of RCSE for propagating ideas that may be of interest to some. Perhaps. Signers of the "Save Speedvision" (and other) electronic petitions may wish to examine the privacy policy of the organization hosting the petition drive, if not the authors of the petition itself. It is not uncommon to discover that the information you provide while "signing" the petition become grist for the marketing (and spamming) mill of organizations that have nothing to do with Fox Television, Rupert Murdoch, NASCAR racing or other agencies close to the hearts of the signers. caveat firmator RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] Wait till you see the JUNE issue of RC Soaring Digest!
At 08:30 PM 7/10/2001, [EMAIL PROTECTED] wrote: things I have observed from watching National Class soaring greats like Jim Bacus of Chicago area No I am not. I am not even a local club great. Jim Downers Grove, IL Member of Chicago SOAR club ICQ 6997780 R/C Soaring Page at http://www.mcs.net/~bacuslab/soaring.html
Re: [RCSE] JR 341 servo dimensions....
http://www.horizonhobby.com/description.asp?prod=JRPS341&ThisPage=&Item=&refer=&category=D > Paul Helmbold wrote: > > Hi all > > I am building a Tekoa Shadow 2m for a good friend. I was wondering if anyone had JR >341 dimensions, and if so could you post them? I would be most grateful :o) > > Many thanks > > Paul -- _ Brett Jaffee [EMAIL PROTECTED] http://home.earthlink.net/~jaffee The Unoffical Extra 300 Home Page http://www.bayarea.net/~nathan/extra300 OnTheWay Quake 3 Server Utility http://www.planetquake.com/ontheway _ RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] JR 341 servo dimensions....
Hi all I am building a Tekoa Shadow 2m for a good friend. I was wondering if anyone had JR 341 dimensions, and if so could you post them? I would be most grateful :o) Many thanks Paul
[RCSE] RCSD question
What is the going opinion of the RC Soaring Digest which currently has an annual subscription rate of $30 in the US. Thanks, Dave RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] Finishing a glass wing??
I would like to hear some of the pros and cons about whether or not the edges of the ailerons / flaps & back side of wing should be finished or left as open foam. It seems to me that if edges are sealed with (glass-epoxy or?? )it would structurally be a stronger wing and would help to stop any twist. I see a lot of wings unfinished. HELP!!! LEE __ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/ RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
RE: [RCSE] RES kit
>AL: The ability to design a good airplane has to cost something.! > >STAN Hi Stan: Are you saying that the $50.00 design isn't any good or are you saying it costs more to market (not design) the $85.00 plane? I would guess the $50.00 standard class design has good engineering backing the design. The one I have been flying, hasn't blown up on a winch launch. Mine hasn't fluttered during flight. Are you saying the $50.00 glider doesn't? If so, why do you say that? AL _ 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]
Re: [RCSE] Profi 4000 programming.
Steve, You need to change the direction of the travel of the one elevator servo. Go to Menu 1 then servo, then travel. Go to the incorrect moving servo. Then selevt the input (elevator) and set the travel to opposite (down right arrow, pull up, press R to reverse, push down stick, press R to reverse). I think I am remembering the keys there! Jason - Original Message - From: [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Monday, July 09, 2001 10:48 PM Subject: [RCSE] Profi 4000 programming. I know this should be a simple thing to do, but I can't get the V-tail to work right. I get either both ways on the stick to work as either rudder or elevator. Swapping the two servo wires around didn't help, and I'm stumped. Steve Schneider SOAR Chicago ICQ 7304857 RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] It's here... Chris Kaiser's Kahu DLG plans are waiting for you!
This is an outstanding and admirable design embodying a lot of knowledge and good ideas. Have a look, everybody! Thanks to Chris for the pix and plans, and as always thanks to Joel and Charles River for disseminating this cool and valuable info. --- "Joel A. Foner" <[EMAIL PROTECTED]> wrote: > Chris has kindly offered to put his design up for all to see, and > after a > little web fooling around it's up. The page has a description and > construction notes, along with an Acrobat PDF of both a 3-view and > the wing > bagging layup details. Thanks for sharing, Chris! This kind of > community > spirit makes a lot of people happy, and helps to brew even more great > ideas. > > The Kahu DLG page is at (this next URL should be all on one line): > http://www.charlesriverrc.org/articles/kahudlg/chriskaiser_kahudlg.htm > > Also see our Articles & Tips index page for more online plans and > other > information. The left column of the index is the online plans, > including > Mark Drela's Apogee updates (now available in a handy 30" version ;). > > http://www.charlesriverrc.org/articles.htm > > Regards, > > Joel > > Joel Foner > Webmaster - Charles River Radio Controllers > http://www.charlesriverrc.org/ > IRCHA #1458 > mailto:[EMAIL PROTECTED] > > RCSE-List facilities provided by Model Airplane News. Send > "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] __ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/ RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] It's here... Chris Kaiser's Kahu DLG plans are waiting for you!
Chris has kindly offered to put his design up for all to see, and after a little web fooling around it's up. The page has a description and construction notes, along with an Acrobat PDF of both a 3-view and the wing bagging layup details. Thanks for sharing, Chris! This kind of community spirit makes a lot of people happy, and helps to brew even more great ideas. The Kahu DLG page is at (this next URL should be all on one line): http://www.charlesriverrc.org/articles/kahudlg/chriskaiser_kahudlg.htm Also see our Articles & Tips index page for more online plans and other information. The left column of the index is the online plans, including Mark Drela's Apogee updates (now available in a handy 30" version ;). http://www.charlesriverrc.org/articles.htm Regards, Joel Joel Foner Webmaster - Charles River Radio Controllers http://www.charlesriverrc.org/ IRCHA #1458 mailto:[EMAIL PROTECTED] RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
RE:[RCSE] I Circumnavigated the Santa Maria
Apropos the lower cortex of the brain, have you tried flying a different mode when you are well used to one of them? I had always flown mode 2 until not too long ago I tried flying a swift slope plane on mode one. The owner, a very generous guy named Chester Tai, offered his plane to me to fly since I didn't have one at the time. But I've never flown mode 1, I said. Awww, you won't have any problem, Chester said, and he put the plane up about three or four mistakes high and handed me the transmitter. I had to consciously make my left hand do what was necessary to control the plane for mode 1, but my right hand unconsciously made the movements that would have been correct for mode 2. My wife and I laughed as we watched my right hand moving the right stick for mode 2 independently of any conscious thought process on my part (thanks for the line, Tom and Ray) while I was wrenching my brain to make the plane do what I wanted with my left hand. Chester wasn't laughing. It was his plane going through those gyrations. I stayed at least two mistakes high, however. Bye and bye my brain got with the program, and got the plane flying okay, but the mental work was exhausting; before long I gave the Tx back to Chester. He was relaxed now or very polite, and he invited me to fly it again. What a guy! I thanked him, but my brain needed a rest. Even later when he offered again I was satisfied with the experience for that day. I wonder if there is anyone who has trained himself to fly both mode one and two interchangeably (?). I'd suppose it would be possible just as some people can switch languages in mid-sentence. The mode 1 experience reminded me of what it was like to learn to fly R/C in the first place. It is abe so easy to the experienced and so difficult to the beginner. Flight simulators and foamies are great inventions for reducing the necessity for repairs. And gyros are neat for DLG. They are 'way faster than the fastest lower cortex, or at least mine. I always enjoy your posts, Tom, and thanks for the invitation, Al Nephew Duluth, MN Tom Nagel writes: >> On the way back to the boat ramp, my neighbor Paul and I cooked up a scheme for an entry in the 4th of July Doo Dah Parade, which runs past the house in my neighborhood. We would round up a bunch of folks with RC cars, decorate them, buy some Fezes and go as the RC Shriners. And so it came to pass. Paul had his little Radio Shack RC car decorated with Godzilla holding an American Flag. Rick had an electric 4x4 with a big flag on it. Wiese wimped out. We only had three entries. The kid and I stuck and EPP pillar into the cockpit of his car, and velroed a stuffed Flamingo onto the top of it, with the legs dangling. We checked for TX interference, and headed out for the parade, joining up with the other entries (The Marching Fidels, the Starbucks Stormtroopers, the Dick Cheney CPR Drill Team, the Chuy's Bar float, where every Wednesday night is President's Daughter Night, and so on.) And this is were the RC soaring connection sort of sneaks in. When we got the parade master's command "Gentlemen Start Your Flamingos!" the kid immediately had no control over his RC bird. He couldn't drive it at all. Turns out we'd checked to make sure our TX did not interfere with Paul's Godzillamobile, but we hadn't checked the other way around. Godzilla was jamming the heck out of the Pink Flamingo. So the kid gave me the TX, and I wound up driving the Flamingo. " How" you say, "if there was all that interference?" The answer is that I am not really sure. The throttle made the Flamingo turn sometimes. Sometimes not. The steering was sometimes effective, and sometimes it worked like a throttle, or reverse. But without really thinking about it much, I was able to veer and swerve the Flamingo down the parade route. Thinking about it later, I decided that RC pilots don't really think about what we are doing. Our fingers get wired to our eyeballs in some route that doesn't include the cerebral cortex (certainly not for Gordy or me anyway) and we twiddle the sticks mostly by reflex. I couldn't explain to the kid how to drive the Flamingo with all that interference, but I could do it myself. I think that's how we get after flying a while. You can't explain what the expert flyer did to save his plane after half his stab blew off, or after he lost half of one wing in a mid air. You can't explain to the new guy how to move the sticks to do a roll or to set up a landing. But after flying for a while the new guy will get his fingers wired to his eyeballs and get RC reflexes just like the rest of us. I hope you all had a fun 4th of July, and that you will join us in the RC Shriner's marching unit next summer. RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] Practical application...
Great, this gives me something a bit more concrete to go on, a step above the "TLAR" criteria. Another side-question on this project: assume a two-piece, 2-meter wing, 550 in^2 area, "type 2" spar, what size wingrod would be needed to match the spar strength?For a respectable 50 pound winch load and a full-pedal 150 pound winch load? Again, thanks for your input. --Bill >From: Mark Drela <[EMAIL PROTECTED]> >To: [EMAIL PROTECTED] >Subject: Re: [RCSE] Practical application... >Date: Sun, 08 Jul 2001 23:13:06 -0400 > > >Two approaches: > >1. Strengthen the existing [spruce] spar. > >2. Make a Balsa-Core Carbon spar > >Question is, how much lighter? > > >Here are some numbers I did some time ago: > >The Allegro-Lite spar (#2 type) is stressed for a 150 lb winch load. >Excluding the joiners, it weighs 3 oz. > >An equivalent spruce spar would be a 0.6" x 5" solid cross section >in the wing center (basically a floor plank). With optimal taper >towards the tips it would still weigh about 24 oz. > >A #1 type spar would be somewhere in between, depending on >the spruce/carbon mix. > >Obviously #2 type is by far the lightest solution. A 2M spar >which takes a still-respectable 50 lb winch load can weigh only 1 oz! > >- Mark >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] So Cal PicoJet Race
Just a reminder that there will be a stock PicoJet race at 12:00 this Saturday July 14, 2001 at the Silent Wings Soaring Association (SWSA) field in Covina, CA. Directions can be found at: http://swsa.8k.com/cgi-bin/i/images/swsamap.gif Dan RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] Kits for sale
I have 2 new in box Dodgson Designs kits 1 Pixy 1 Camano $250.00 each plus shipping Email me directly [EMAIL PROTECTED] Thanks, Lee RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
RE: [RCSE] servos...digital vs analog
Arne, Most of the new helicopter gyros have an option to drive servos at a high frame rate [250-270hz] and I can tell you that a standard analog and some digital servos will self destruct when driven at the high rate. More than a few heli pilots have done this either by accident or as you suggest as an expensive experiment; loosing yaw control on a heli makes it very difficult to land safely :( It's not that easy. Kerry > what happens when you pulse the analog servo at 300hz? it should have all > the advantages of the digital servo except the programmability. but will > the more frequent pulsing cause any trouble like overheating of the servo > or smth? RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] Why not aileron->elevator mix?
>Coordinated flight produces the minimum drag flight condition. >How you get it is not all that important. Wouldn't minimal surface deflections, a combination of ailerons, flaps, rudder, and possibly elevator, reduce drag during a roll? RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] Searching for Greg Potter
Hey you all, I am trying to contact Greg Potter. He's an Aussie, and I hope one of you guys from Down Under can give me his email. The address I have doesn't seem to work any more. Perhaps he is on the list and can respond. Thanks, Carl Otto RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] Mini-Ellipse
Just flew my new Jaro Muller Mini-Ellipse that I purchased from Aero-Models in Arizona (http://www.aero-model.com/). For those that are not familiar with this plane, it is an all molded 60" sloper with a V-tail. Mine is yellow on top and a deep blue on bottom. The canopy is a light sky blue. The workmanship is outstanding, as is typical of the molded European stuff. No surprises here. Took me about 2 days of sporadic effort to get it airborne. I installed 2 servos in the fuse (JR 241's) for the Rudder-Vators and 2 Volz Micro-Maxx servos in the wings. The wings have servo wells premolded into them. All that is need is to cut a hole for the wires and install the servo and linkages. Little ball links are supplied and screw into the ailerons. Very slick. V-tail sets up easy with the pre-installed pushrod housings. You have to supply your own pushrod material (0.8 mm). I used steel since I had some. CF would work well also. I made a small tray for the 2 JR 241's and used a JR 549X receiver without the case (I fly ham band and have a bunch of these RX's). I used an 800 mAh 6-volt Duralite battery. I needed about 1.5 ounces in the nose for balance. All up weight, ready to fly is 21 ounces on the nose. First flights were totally uneventful. Plane tracks arrow straight and I only needed minor tweaking of the throws from those suggested in the "instructions" . Balance is about 2.6 inches from the LE (range is 2.44 to 2.83 inches). With this CG the plane goes right down on a 45 with no tendency to pull or tuck. I need to make up some ballast to fit the fuse and I'm set. Instructions say up to 600 grams (21 ounces) can be put in it. I think this is a little optimistic. I plan to make up some 4 or 5 ounce bars to drop into the small ballast area. This is going to be a fun little sloper. It will stay up in very light air, yet speeds up and provides lots of fun in better lift. Given the workmanship, pre-fabrication, and overall performance I thin this is well worth the money ($289) and is a great plane for anyone looking for a 60" sport sloper. Oh yeah, Sean also sells an electric version. You can get BOTH fuses and use the same wing to go electric OR slope!! How's that?? Oh yeah - you've GOT to get one of these if for no other reason than to "read" the "instructions". That is the most difficult task in this plane. ~~ Bill Malvey Ladera Ranch, California RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] Balloon method for making tubes/booms?
Can someone post some URL's for sites (or other information sources) describing how to use balloons or inflated surgical tubing in the process of laying up tubes on a mandrel? - George Gassaway RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] Why not aileron->elevator mix?
On 7/9/01 9:43 PM, "Jeff Reid" <[EMAIL PROTECTED]> wrote: > I understand this, but instead of eliminating the adverse yaw with a > lot of aileron differential and no rudder compensation. You've lost me. You seem to want this to be more complicated than it really is. Adverse yaw is primarily counter acted using rudder (especially in full size). Aileron differential helps reduce it as well. Coordinated flight is important regardless of speed or task. Coordinated flight produces the minimum drag flight condition. How you get it is not all that important. ~~ Bill Malvey Ladera Ranch, California RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] Why not aileron->elevator mix?
> balance the lift and drag on both wings Forgot to mention, aileron differential can balance drag, but only for a limited range of airspeed. Again, I assume that the goal is efficient thermal turns (not high speed turns), so this speed range limitation is not much of an issue. F3B gliders have high and low speed requirements, maybe different mixes for each task?. RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] Save Speedvision petition.
Dear Friends, I have just read and signed the online petition: "Speedvision & NASCAR programming" hosted on the web by PetitionOnline.com, the free online petition service, at: http://www.PetitionOnline.com/svsn/ I personally agree with what this petition says, and I think you might agree, too. If you can spare a moment, please take a look, and consider signing yourself. Best wishes, John Roe = Professor John Roe Laguna Hills, Ca www.MartialArtsAcademy.org "In God we trust" ...the official motto of the United States. __ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/ RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] Why not aileron->elevator mix?
{sorry, posted without entering proper subject, reposting with text cleaned up}
> > Differential aileron and rudder coupling are used to limit the effects
> > of adverse yaw, NOT a pitching moment.
> Actually, I think what he was implying is that the aileron differntial
> that's used to counter adverse yaw could also PRODUCE an unwanted pitch
> response as well. I'm not sure how that would work, since I would assume
> a proper amount of differential would balance the lift and drag on both
> wings, but I'd be curious to hear about it.
>
Balanced lift is not the issue here, I'm assuming that lift is balanced
(see below).
The issue is: is lift produced during a roll is the same as lift produced
during level flight? If there's more up aileron than down (differential),
then it seems to me that the overall lift from both wings is less when
ailerons are deflected than when they are not. Assuming reduced wing
pitching moment (explained below for those that don't know about this)
from lowered angle of attack has less overall effect than reduced lift
from the wings, a model should pitch down (relative to fuselage) when
it's rolling.
Technical stuff here for anyone interested...
Balanced lift
To initiate a roll, the lift from the wings is different (angular
acceleration). Once a model is in a steady roll, whether or
not the lift of the wings are equal depends on how lift relative to a
wing is defined (reference point issue). Since there is no angular
acceleration (about roll axis) some would consider the lift from the
wings to be "equal", even though each wing's flight path is different,
relative to fuselage path.
Wing pitching moment
Most undercambered airfoils have a tendency to pitch "downwards" depending
on angle of attack and airspeed (as either increases, there's more of
a tendency to pitch down). This can contribute to unexpected reactions
when trailing edges are raised or lowered significantly. If the chord
(front to back) distance on the wing is long enough, then trailing edges
also act a bit like elevons (since they are far enough away from center of
mass to cause this effect), for example, raising trailing edge may cause
a model to pitch up (like my DAW 1-26 2m with spoilerons for example).
Some flying wing airfoils (like on my www.f3x.com Bandit) have the
opposite pitching moment. Because the trailing edge is overcambered
(turns upwards), this airfoil has a tendency to pitch up instead of
down. This means that pitch stability can be adjusted somewhat by
just trimming the elevons, without having to move the center of gravity.
It also makes adjusting the center of gravity more difficult (just
keep moving it back until the model starts to be difficult to control,
[pilot judgment here, glad it's a foamie] then move it forwards a bit).
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