RE: [RCSE] Winch current draw.
We did a test here at Visalia to see what kind of current draw. We were thinking of remote batteries to the winch. We launched a 117" glider full peddle, folder the wings and meter MAXED over 200 Amps. That ended our test, and we knew there was too much line loss to continue. We were going to use 00ga. welding cable. We had no idea the glider was going to put that kind of load on the battery. I used a clamp on digital meter. I hope some one learns from our mistake. Larry Taylor > [Original Message] > From: Perry Hudson <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Date: 7/20/00 5:24:40 PM > Subject: [RCSE] Winch current draw. > > > Ok, we were at the field today trying out our new winch/retriever batteries. > We were wondering just how much current/energy (watts, dynes, jouels, ft. lbs, > metric mile tons,)is used in towing up a glass slipper to 700 ft using full > peday and 250 lb test line with a ford long shaft without balls. > > Any ideas on how much torque one of these things will put out when stalled? > How about horse power?? How about holding power?? > > Regards, Perry > RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] --- Larry Taylor --- [EMAIL PROTECTED] --- EarthLink: It's your Internet. RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] Mine isn't better than Yours
>Having a molded plane and the top of the line, most expensive equipment WOULD NOT have gotten me >in the top five on either day, only better flying. Have you ever flown in a contest with a " molded plane and the top of the line, most expensive equipment "? If so what was the out come? **YCFMM** -Original Message- From: Rick Brown and Jill Wiest <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] <[EMAIL PROTECTED]> Date: Thursday, July 20, 2000 8:19 PM Subject: [RCSE] Mine isn't better than Yours >All, > > I have been following the posts about servos and Rx. I just had to >throw in my two cents. > > I have invested a good bit of money in radios, planes and servos over >the years. I don't fly the latest molded plane or have the most >expensive servos or even have the latest design Rx. I have a foam, >fiberglass and carbon fiber plane (getting to be in the minority - many >molded), a Futaba FM radio and Rx and some of those cheap Hitec servos. >I probably still have about $1000 just to get one plane in the air. This >gets a bit less expensive for multiple planes due to the same radio for >all the others. > > My point is I feel I have put enough money into the hobby to be >competitive. Over the weekend, flying an ESL contest in Lancaster PA, I >beat many good flyers with better equipment. I placed 8th in Expert >class(my first year in Expert - they kicked me out of Sportflyer class >last year)both Saturday and Sunday against good flyers, Gordy (he graced >us with his presence) being one of them with his molded plane and high >priced servos. I blew a 4th place finish on Saturday with a short flight >in the 8th and final round. > > I think we all know it's how well you can fly what you have and not if >you have the latest most expensive 'stuff'. Having a molded plane and >the top of the line, most expensive equipment WOULD NOT have gotten me >in the top five on either day, only better flying. Mine isn't better >than yours, but one of these days I may just slip in there for a win > > Fly what you got and have fun doing it. > >Later, >RB >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] NATS HL tasks
I musta missed it but what are the tasks for HL at the NATS? Are they on a web page somewhere? thank ya Bruce Davidson Louisville, KY RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] Winch current draw.
Ok, we were at the field today trying out our new winch/retriever batteries. We were wondering just how much current/energy (watts, dynes, jouels, ft. lbs, metric mile tons,)is used in towing up a glass slipper to 700 ft using full peday and 250 lb test line with a ford long shaft without balls. Any ideas on how much torque one of these things will put out when stalled? How about horse power?? How about holding power?? Regards, Perry RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] Mine isn't better than Yours
All, I have been following the posts about servos and Rx. I just had to throw in my two cents. I have invested a good bit of money in radios, planes and servos over the years. I don't fly the latest molded plane or have the most expensive servos or even have the latest design Rx. I have a foam, fiberglass and carbon fiber plane (getting to be in the minority - many molded), a Futaba FM radio and Rx and some of those cheap Hitec servos. I probably still have about $1000 just to get one plane in the air. This gets a bit less expensive for multiple planes due to the same radio for all the others. My point is I feel I have put enough money into the hobby to be competitive. Over the weekend, flying an ESL contest in Lancaster PA, I beat many good flyers with better equipment. I placed 8th in Expert class(my first year in Expert - they kicked me out of Sportflyer class last year)both Saturday and Sunday against good flyers, Gordy (he graced us with his presence) being one of them with his molded plane and high priced servos. I blew a 4th place finish on Saturday with a short flight in the 8th and final round. I think we all know it's how well you can fly what you have and not if you have the latest most expensive 'stuff'. Having a molded plane and the top of the line, most expensive equipment WOULD NOT have gotten me in the top five on either day, only better flying. Mine isn't better than yours, but one of these days I may just slip in there for a win Fly what you got and have fun doing it. Later, RB RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] Re: PCM, IPD, PPM, IOU, CIA, ETC.
Mike, Thanks for sharing your thoughts on this. Let me just point out a couple of things. First, I'm not completely unintelligent. I am capable of separating the wheat from the chaff. I know BS when I see it. I know science when I see it. I think most of the people who subscribe to this list are also intelligent enough to figure this out. We don't need anyone representing our collective "smarts" by suggesting that this thread has educated us in some incomplete way (e.g. "you know a little more than you did"). While you're technically correct, give us all the benefit of the doubt and let us choose what to believe and what to dismiss. Second, your remaining points were covered in the thread. Bringing them up now serves no purpose other than to remind us that others didn't seem to agree with you. BTW, the disagreement in the thread is what led to it being educational. Your posts led to a better understanding--at least by me. Whether I agree or disagree, the debate brought out some good points. For the record, I'm very happy with my dual conversion PPM receivers and have no plans on switching. Last, your assumption that I am not capable of conducting comparative testing (e.g. "serve to confuse you more.. good luck..") without knowing my credentials and capabilities is mildly offensive. I believe you underestimate the abilities of the members of this list, and this member specifically. Good day. -Ben Mike Stump wrote: > > At 03:21 PM 7/20/00 -0400, you wrote: > >> I didn't know exactly how PCM worked before this thread. I certainly > knew nothing about IPD. Now I do.<< > > no, you know a little more than you did... > > did you know the PCM coding for each manufacturer type is different? > > some manufacturers use more than one type? > > that differing PCM systems receivers react differently to interference (also > depending on type of interference)? > > that refresh rates differ by brand & type? > > that not all PCM receivers "lock-out"? > > that not all PCM systems are equal in performance? > > Well, all of the above are true... unfortunately, in a not so thinly veiled > "mine is better than yours" post proclaiming IPD as the best all time savior > of RC integrity, ALL PCM was lumped together you can't do such a thing > for comparing things and maintain adequate integrity.. > > > I also have some ideas on how to conduct comparative tests on receivers. > This is useful information and the discussion about it is appropriate for > this list.<< > > embarking on such an adventure may teach you a lot.. or serve to confuse you > more.. good luck.. > > Mike Stump > [EMAIL PROTECTED] RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] receivers and MPX USA down for a day
I am so willing to PUT up or SHUT Up on the receiver issue. I have decided to hire a R/F lab in the morning to get all the hard data that you want. BTW we have NEVER been afraid to post such data even on servos! Ever see Japan Radio or Futaba post data like this on technology for R/C? http://www.multiplexrc.com/mc_servotips.htm Due to other office stuff we will be closed Friday! Our staff will be in training on a new computer system to serve you faster. Smooth Sailing, Karlton Spindle http://www.MultiplexRC.com RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] Elevator Servo?
Hi All, I think that most of you would agree that the elevator servo in a TD plane (that's all I fly) is the most important servo in your plane... so which servo do you use in your open class plane in the mid 60 oz weight range. Thanks! Gary S. Baldwin Tallahassee, FL USA "If your not having any fun then you should be planning to have fun!" Bob Champine https://hometown.aol.com/grc6431/myhomepage/index2.html RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] RE: Volz servos
I've used Volz for eighteen months in two F3F models, just installed them in a third and yes I considered using the red ones, in fact I have a couple of mcV2's still in the box. Apart from some wear in the older ones, the WingMaxxes have been rock solid. I've had a little neutral drift with Micro-Maxxes - this needs to be addressed IMO but it's not been a show-stopper for me. What swung it for Volz over the red ones for my latest machine was the excellent CNC moulded mounts for both MicroMaxx and WingMaxx which make installation and removal in a moulded wing a complete doddle. Also in thin wings the WingMaxxes fit properly without resorting to shaving the case or bonding them directly to the wing skin. Out of 12 servos purchased in two batches (8 WingMaxx, 4 MicroMaxx): Operational failures to date: None. Crash damage: One broken tooth in a Wingmaxx following a pylon race collision. Manufacturing problems: One pot slipping on the shaft - fixed with cyano. Unlike some servos, getting at the innards is easy if you do have to replace gears or fix something. Michael Volz also provides great service. - Mike == Mike Shellim R/C Soaring UK http://www.rc-soar.com == RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] Offline for a weekorso
Hi Ho, Hi Ho, it's to the Nats I go... I'll be off line for a week unless somebody shoves a laptop in my lap. see you there, or not, as the case may be - Rob Glover RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] Grand Esteem RTF, $350
Grand Esteem RTF, Add rx and battery and go win a contest! $350+ shipping. Looks really nice! Email for details gv Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] Nats quiver
At 01:05 PM 7/20/00 -0500, you wrote: >Here's what I am packing, how about you? > I will be leaving for the Nats next Wednesday morning. I will be flying the same models I flew at the Mid South last month. Unlimited Sirius II Nostalgia Sailaire (but not the same one I flew at Louisville) Chuck Anderson RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] Re: PCM / IPD / PPM
Hay Mike How about this lets get an INDEPENDENT LAB (not a magazine reviewer a real lab!) to test them I will FRONT ALL THE MONEY TO TEST THE MPX LINE OF IPD RECEIVERS. ] Any one who wants to put up another brand FRONT the bucks for testing the units they want tested. LOOSER pays for ALL the testing Fair? Restricted to commercially available 72Mhz units bought from dealers. NOT SUPPLIED from the importer (this way no one can put a ringer in the hopper). Smooth Sailing, Karlton Spindle http://www.MultiplexRC.com - Original Message - From: Mike Stump <[EMAIL PROTECTED]> To: Karlton Spindle <[EMAIL PROTECTED]> Sent: Thursday, July 20, 2000 3:30 PM Subject: Re: [RCSE] Re: PCM / IPD / PPM > At 09:30 AM 7/20/00 -0700, you wrote: > > >The 7ch IPD out now is single conversion when tested with other single > >conversion receivers it wins HANDS down. << > > vs JR ABC&W receivers... (549, 636, 649, among others) > > I'd really love to see that data... > > > > BUT put a duel conversion PCM and > >do the same ground range test and the dual conversion wins. HOWEVER just so > >happens I have a dual conversion IPD and when tested with the dual > >conversion PCM it smacks it hard!<< > > let's see this data too... graphs or spread-sheets compared to > top-performing competitors to IPD... > > no claims.. just graphs & charts... > > > > Mike Stump > [EMAIL PROTECTED] > > RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] PCM / IPD / PPM
Good Challenge Mike lets do it! Smooth Sailing, Karlton Spindle http://www.MultiplexRC.com - Original Message - From: Mike Stump <[EMAIL PROTECTED]> To: Karlton Spindle <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Thursday, July 20, 2000 3:30 PM Subject: Re: [RCSE] PCM / IPD / PPM > At 11:12 AM 7/20/00 -0700, you wrote: > > >Simon you still shooting blanks you have YET to come up with good reason > >that IPD is not better them PCM. > > > >Smooth Sailing, > >Karlton Spindle > >http://www.MultiplexRC.com> > > > and you've not done a great job of showing, in concrete fashion that IPD is > UNIVERSALLY better than PCM.. Across the board first.. then by individual > brand & model.. > > My guess is there are some (maybe more than a few) different PCM receivers > that IPD can't or won't prove to be better than.. > > Mike Stump > [EMAIL PROTECTED] > > RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] Re: PCM / IPD / PPM
At 09:30 AM 7/20/00 -0700, Karlton wrote: >The 7ch IPD out now is single conversion when tested with other single >conversion receivers it wins HANDS down. << vs JR ABC&W receivers... (549, 636, 649, among others) I'd really love to see that data... > BUT put a duel conversion PCM and >do the same ground range test and the dual conversion wins. HOWEVER just so >happens I have a dual conversion IPD and when tested with the dual >conversion PCM it smacks it hard!<< let's see this data too... graphs or spread-sheets compared to top-performing competitors to IPD... no claims.. just graphs & charts... Mike Stump [EMAIL PROTECTED] RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] Re: PCM / IPD / PPM
An important feature is being overlooked in these tests and the debate. PCM (and I think IPD) are programmed to go into fail safe when the voltage level drops below 4.8 or 4.7 volts. PCM rx's emit a low battery warning which if ignored, will deploy the fail safe mode. For those of u using 5 cell packs this is rarely a problem. But those on 4 cell packs have tempory and short voltage dips after heavy servo use while in flight. This often goes below the programmed minimum level. I understand that a lot of the power pilots use 5 cell packs with a voltage regulator set at 5.7 volts, which eliminates the temporary and short deployment of the fail safe modes. Seems like the manufacturers should not be selling PCM except for use with 5 cell packs (I don't know the minimum voltage level for IPD or even if it has the low battery warning that Airtronics PCM's have). RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re:[RCSE] Pouring lead into tubes
Greetings, I recieved many interesting replies on this. The best results in pouring lead into larger diameter tubes come from filling the entire tube prior to cutting it into the smaller lengths. Oh well! Since I had already cut the tube up, I opted for the simplest fix and used a urethane glue to hold the lead into the sections. The end was then easy to machine clean. Now I have 40oz of ballast and a wing joiner 20oz heavier than the carbon one which should be enough. Thanks all for your input. Dennis --- Dennis Phelan <[EMAIL PROTECTED]> wrote: > Greetings, > I'm making ballast in brass tubes that are 1" dia and 1" long. I > poured last night and the lead shrank in diameter enough that it > easily fell out of the tubes. This might not be too much of a > problem > for a smaller diameter tube. > > Should I: > Heat the brass tubes as I pour, > Press the lead down before it cools and just after I pour, > Epoxy the lead in after it cools, > Press the cooled lead causing it to expand and match the tube[I can > make a fixture to hold the tube to diameter], > Roll the ends of the tubes to prevent the cooled lead from > escaping[easy for me to do also]? > > I think any of those would work, what have you found that works for > you? > Dennis Phelan = Dennis Phelan __ Do You Yahoo!? Get Yahoo! Mail Free email you can access from anywhere! http://mail.yahoo.com/ RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] Psyko+Stylus for Sale
A friend is getting out of the hobby and asked me to sell off this package for him. It is a great deal. Included: 1. Newly built Psyko III, bagged version, with about 1 hour of airtime, not a mark on this plane, white wing tops, natural black bottoms, includes tape on nose skeg. 2. All radio gear in the plane, includes 8-channel FM Rx on channel 48, 1100 (or 1400 mah, I'm not sure) battery, switch, 2 Volz Wing-Maxx for ailerons, and the 4 Airtronics 94141s that came with the Stylus on everything else. 3. Airtronics Stylus transmitter, plus the Sailplane card, Memory card, extra TX battery, wall charger, and a suitcase style 2-transmitter case. Please don't ask about parting this out, his desire is to have a really ready to fly package. Price for everything is $1100 plus shipping to your location. I am in the Sacramento, CA area, so anyone within range could pick this up and save the shipping cost. Please e-mail me or call. I will be out of town at the AMA Nats next week, so don't get upset if I don't respond until July 31. Jim Thomas [EMAIL PROTECTED] 916-984-5123 RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] F3J World Champs pictures and text
Mark, Really nice picture story! Let me know how the deal for the building is going. If it works out and the bank will give you more money, I have a bridge in Brooklyn you might be interested in. Dennis --- Mark Taylor <[EMAIL PROTECTED]> wrote: > > I put aprox 30 pictures and narration up on the web site from the > F3J World > Champs in Greece. I've had quite a few people ask me what planes > were there. > I tried to get pictures of the more frequent, or interesting ones. > > Anyhow, here it is: http://www.f3x.com > > ps- my personal favorite memory, or partial memory, was drinking > the Ukraine > homemade moonshine. > > > Mark Taylor > > RCSE-List facilities provided by Model Airplane News. Send > "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] __ Do You Yahoo!? Get Yahoo! Mail Free email you can access from anywhere! http://mail.yahoo.com/ RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] "Visited the 'New" NSP today"....
At 12:22 AM 7/20/00 -0400, [EMAIL PROTECTED] wrote: > and you didn't. > >Now Scott don't bother posting an attack, or Larry, no need to rush to K'mans >defense, we all still love him :-) > >Sal's new place in Colchester Vermont ( a hell of a long way from Kentucky by >the way, take a look at a map!) >... Gordy, You sure sound like a Sales and Marketing graduate. Have fun and don't break any of Sal's toys. :-) Steve Meyer http://users.megapath.net/~stmeyer/stmeyer/ [EMAIL PROTECTED] S.O.A.R. Web Page http://www.SOARchicago.com/ RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] Hot box for curing wings etc
Hi guys, One of you out there has a site showing how they set up a box with lamps for curing wings. I can't remember where I saw it, can anyone help with the URL. One of the chaps in our club would like to have a look. Thanks -- Brian Ford Visit The MRSSA Web site: Staffordhttp://www.bit.net.au/~mrssa BrisbaneMoreton Region Sports Soaring Association Inc Queensland ...Queensland's Premier R/C Soaring Club... Australia AUS 55723 RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] Re: PCM / IPD / PPM
The test Karlton made may be a bit over simplified on details. Here is the detailed way in trying to manage thing under equal basis. Table will be of 100% wood without any stretch of metals. Do not place all receiver on the same picnic table but one at a time. This will eliminate unintend antenna array by the adjacent antenna not under test (yagi model), for equality purpose. Failing to do so will cast a doubt to the equality to the contestants. One test at a time, all Rx and its antenna will be held down securely on wood table. Antenna root will be strangle hold by a first rubber band and pin down on wood table. Do the same to the antenna tip with a 2nd rubber band but stretched before pin down onto the same table such that the antenna is pull straight and is always right angle to the Tx. Antenna tip is define as the last half inch at the open end. It is prohibited to alter any Rx antenna length during the contest. Double side tape a soda straw onto the servo arm and then double side tape it onto the same table such that the straw is neutral in vertical. The staraw will act as a flag in a constant gentle cycle in +/-30 degree by the test operator with stick input. With a helper to safely guide the test operator to step backward facing the Rx under test. Observation guide. Watch the straw in cycling for any abnormality operation as we are backing off. Any Rx in fail safe mode need to preset in a unique static displacement position to help indicate a fail safe state from a cycling state. Once fail safe is latched, walk back to the Rx until RC link is reestablish, mark that position. Perform the same to PPM system using a difference threshold at which servo freeze from proportional displacement, or suffer displacement limiting. Again walk back to the Rx until RC link is reestablish.All three test must be recorded and reported in absolute distance value and not in ratio or in difference. I do not see a need for a common physical Rx antenna, although that is scientifically correct. I do not think there should be a significant difference. Concerns about all three categories: A relative more sensitive Rx equip with IPD will illude the audience about good IPD's performace. Like wise, a less sensitive Rx equip with convensional scheme can indirectly illude the audience that IPD is better. Or less sensitive Rx equip with PCM also make the other candidates look good. These are the concerns, where everything else cannot be equal. Straightly speaking, it is not easy to draw any conclusion beyond any reasonable doubt, for or against any post detection scheme, PPM, IPD or PCM. More concern: A more sensitive Rx is good when no off channel signal present. It is also very easy to produce high sensitive Rx than to produce both high-sentitive and robusness in the same Rx. Robusness is what Jason refers to RF link integrity or high immunity to interference. Therefore Karlton's report is good for range contest and is lagging of data for 2nd source interfering source kind of performance. That leads to Two Tx ground range test. This reminds of what YK introduced special ground range test that involve two or more Tx. More comment on that upon request. YK Chan Seattle - Original Message - From: Karlton Spindle <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Wednesday, July 19, 2000 9:20 AM Subject: Re: [RCSE] Re: PCM / IPD / PPM > Don't take my word take my test! We were over 50 feet and still receiving no > glitch this morning with collapsed antennas. > > Smooth Sailing, > Karlton Spindle > http://www.MultiplexRC.com > - Original Message - > From: <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Wednesday, July 19, 2000 7:48 AM > Subject: [RCSE] Re: PCM / IPD / PPM > > > > OK- so lets have the hard numbers-Was it a 10 foot difference, or 100 feet > , > > or a 1/4 mile difference. You certainly don't expect us to take your wo r > > it do you? ;-) > > Vince D > > > > In a message dated 00-07-19 10:16:43 EDT, you write: > > > Date: 00-07-19 10:16:43 EDT > > > From:[EMAIL PROTECTED] (Karlton Spindle) > > > > > Simple test take a radio that goes PCM and PPM take three receivers wad > up > > > the antennas on the receivers and place them on a wood table off the > ground > > > all three in a row all on the same channel. > > > > > > Now do a range test ONE at a time PLEASE. SAME TX, SAME Battery pack > in TX > > > same battery for the receiver. Now take the TX far enough away where > the > > > PCM NO LONGER WORKS it goes in to fail safe, mark the distance. Switch > > > batteries and fire up the PPM receiver go to the same spot with the TX > > where > > > the PCM stopped. Note the glitches of the PPM or move further if the > PPM > > is > > > not glitching. Mark the spot and do the same test with IPD. > > > > > > SIMPLE TEST we did it this morning IPD wins GLITCH down. But do the > test > > > yourself and you WILL SEE!. > > > > > > Remember it was Multi
Re: [RCSE] PCM is Superior ?
Jason, In my other mail, I have mentioned that the "Karlton Morning Range Test" did not necessary reflect RF link integrity due to absence of 2nd and/or third Tx as the interferer(s). I take it as a sensitivity/range comparison more than a IPD vs Convension comparison. In addition, most range test I had was more than 50 feet to the convension Rx. -YK - Original Message - From: Jason Werner <[EMAIL PROTECTED]> To: YK Chan <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Cc: <[EMAIL PROTECTED]> Sent: Wednesday, July 19, 2000 8:30 AM Subject: Re: [RCSE] PCM is Superior > YK, > IPD cannot improve the integrity of the actual RF link. That link is > the link between the rf module in the tx and the decoder in the rx. The TX > side is basiclly a normal PPM modulation. That is transferred to a standard > FM rf signal (same as PPM and PCM!). The only difference is the ability to > decode that signal on the other end (the Rx side). IPD shares the same > fault tolerance and bad data rejection that PCM does while adding the > variable frame tolerance and shorter data word (faster update rate). > The biggest advantage IPD has over PCM on the RF world is the ability to > vary it's tolerances to allow more data to get through while still > maintaining the servo limits. So when a slightly garbled piece of data gets > through (say channel 1-4 is fine but 5-8 is toast) then it will still > process some data (channels 1-4 in this example). PCm will reject the > entire string. > PCM is not dead. IPD is simply different. :) > > Jason > > - Original Message - > From: "YK Chan" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>; > <[EMAIL PROTECTED]> > Cc: <[EMAIL PROTECTED]> > Sent: Wednesday, July 19, 2000 2:50 AM > Subject: Re: [RCSE] PCM is Superior > > > > It is less likely that IPD can improve RF link integrity, if I > > understand Jason's definition correctly. I define integrity as the > > link between the stick and the flight. Not just RF, interference, IPD, > > servo or mechanical. That means an effective IPD should meet Jason's > > requirement to some extend. > > > > YK Chan > > Seattle > > > > - Original Message - > > From: <[EMAIL PROTECTED]> > > To: <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> > > Cc: <[EMAIL PROTECTED]> > > Sent: Tuesday, July 18, 2000 6:18 AM > > Subject: Re: [RCSE] PCM is Superior > > > > > > > In a message dated 7/17/00 10:22:39 PM Eastern Daylight Time, > > > [EMAIL PROTECTED] writes: > > > > > > << I learned more from Jason Werner's post regarding IPD than I have > > seen > > > or read elsewhere. As previously stated, if IPD increases the > > integrity > > > of the RF link between the TX and RX over what is currently > > available, > > > I'll use it. > > > See Ya,>> > > > I agree Simon, Jason's post explained it very well for me also. > > Bill > > > Grenoble > > > 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-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] Volz servos
temperature changes, but it was always very minor. What is a large temperature change in Hawaii? 8-) Sometimes in Chicago we have to use the heat and the air conditioning in the same day!> We get 15 deg F changes from morning to late afternoon, and I do carry my planes with me all over the country on a regular basis. Keith RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] Reno Air Races/fun fly???
Count me in!!! I'll probably have a light twin that I can haul a few models in for those that want to join up and fly with me to Reno from Santa Monica or Orange County. Keith M Hawaii RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] servos going bad
You are s right! Keith M Hawaii RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] sunglasses
Go to a store on a cloudy day or other low light condition such as dusk, put on a pair of good quality orange sunglasses and see for yourself the increased contrast. Great for driving also. RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] Dave Reese's movie.
Good question, ask Dave. He seems a bit irritable lately though. Cliff Schwinger wrote: > > Howdy all, I am interested in the new movie that > > Dave Reese is releasing. His last post on the > > subject dated 6/9/2000 stated that it would > > What is this movie/video about (r/c soaring?) and where can I get it? > > cliff > 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] F3J World Champs pictures and text
I put aprox 30 pictures and narration up on the web site from the F3J World Champs in Greece. I've had quite a few people ask me what planes were there. I tried to get pictures of the more frequent, or interesting ones. Anyhow, here it is: http://www.f3x.com ps- my personal favorite memory, or partial memory, was drinking the Ukraine homemade moonshine. Mark Taylor RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
