[RCSE] cover repair question
Picke up a very nice Electron used. It has a slit in one of the wing bays. How can I patch it? Should I cut out the whole bay and recover? Is there and easier way by somehow covering the slit? TIA Mick RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] A Siriusly Noisy Problem - Simple solution
that will probably work even. Go to the Shack and get one of their large torrodial rings like is on your computer cables. They have some that allow you to wrap the line and then snap the ring closed. Do it to the supply side of the charger. G RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] Incidence angles
For the younger generation brought up on fomies and composite lawn darts, never built a "real model airplane", and doesn't understand incidence angles, I highly recommend an article by Jim Alaback on Page 38 of the September issue of Flying Models. Larry's article alone is worth the cover price of $3.95. For this paltry sum, you also get a good lesson in tissue covering, almost a lost art. Wish I had read this article 60 years ago when I first began covering 10 cent Comet P40's and Spitfires. Going further back, there is an article about bending bamboo, a technique often used long before I even knew what a model was. All in all, this issue is a good primer in what modeling is all about for those who started in the modern era of specialization. I enjoy all types of modeling and have flown most of them at sometime during he last 60 years. Trouble is I don't have time to do all of them. I can read about them in Flying Models, the only real model airplane magazine other than Model Aviation. Chuck Anderson who had to build a new house to get an attic large enough to hold my model airplane magazine collection. :-) RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] aileron pushrods
The convention seems to be to have the aileron pushrods extend out from the bottom side of the wing. Is there an aerodynamic advantage to placing these things on the bottom as opposed to running them on the top side of the wing? (...just use RADs and don't worry about it...) dave. RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] Negative side of the Nats
I have finally recovered from my trip to the Nats and have been reading all the glowing remarks about the Nats. I decided that it was time to post a letter about the negative side. To be truthful, there wasn't much negative about the sailplane portion of the Nats. The only real negative was that it was lonesome. Nothing but Sailplanes. No free flight, scale, combat, etc. I enjoy almost all of them except pylon racing. I might enjoy that too but I can't see much from under my van. :-) The Nats at Vincennes was much better. We held the sailplane events at the high school while most of the other events were held across town at the Lawrenceville airport. On days when I was not flying, I could drive over to the airport and talk with the few pattern flyers from my era still active. Scale was always nice and I could reminisce about the 50's when I was still flying control line stunt and scale. Then we consolidated everything to Muncie and had to spread the nats out to a month to avoid frequency conflicts between pylon racing, pattern, scale, sailplanes, electric, and even free flight. In some years, sailplane and free flight were flown in the same week so it was still at least possible to see other phases of model flying. This year, there was nothing. The Nats were just like any other large contest like the Tangerine, Mid South, or Visalia. I enjoy those contests too but the Nats is supposed to be something special. I was told that the reason for separating FF and sailplanes was some complaints from both FF flyers and sailplaners about models dethermalizing in the launch area. That's silly! My only complaint about the ff models dethermalizing in the launch area was that there were none dethermalizing out of thermals when it was my turn to launch. Chuck Anderson Attended 20 Nats since 1953. Had to work the other years. RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] Battery size for open class full house sailplane
My advice: as others have said, put the largest possible battery in the plane that does not add unnecessary weight. I have a 1650mAh battery in my Genesis. The key is to have more battery in the plane than you have in the transmitter. When you get home from what you think is a typical day of flying, immediately cycle (discharge) both the Tx and the Rx batteries. Make sure you have MORE capacity remaining in the Rx battery than in the Tx battery; that way, you can be comfortable watching the meter on the Tx when you fly, and not worry as much about the plane's battery. Of course, all of the other caveats apply: cycle your batteries regularly, check the Rx battery before each flight, etc. Enjoy, Keith My first full house sailplane should be delivered next week.. I have a three part question concerning airborne battery pack. I have a JR 783 with standard 600ma airborne. 1) With standard pack with a full house novice probably playing with all the sticks. What would be a safe airborne time to expect? 2) What is the maximum size battery pack that my std charger will work with? 3) What is the realistic maximum battery pack to use in a full house ship with the charger not being the limiting factor or fuselage dimensions? TIA Stan RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] Where is energy conservation law in sink?
Wind is doing work on a glider, in an updraft, it increases potential energy (gravitational) or kinetic energy if the pilot corrects for the updraft. In a downdraft, it decreases potential energy, or kinetic energy (if the pilot corrects for it and it doesn't stall). Changes in wind speed, or flying across a wind shear boundary can also affect energy (a planes kinetic energy is relative to a constant velocity reference, usually the air it's flying in, if the relative wind changes, a plane will eventually gain or lose energy with respect to it's original reference). Would you call that part of dynamic soaring? Regards, YK Chan RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
Re: [RCSE] Dynamic soaring question
A theoretical and experimental investigation and article was written up in "Technical Soaring" (an SSA publication) in the early 1970's. It can be done, but requires a medium high performance sailplane, very precise maneuvering, and a strong wind to produce the necessary gradient. Dan deVries DEVRIES DESIGN, Inc. Product Design --+-- Patent/Litigation Graphics ___ _ |___ 0 [EMAIL PROTECTED] Let us assume the boundary layer from ground up is 300 ft (it varies with the type of ground below - the smooother the surface the thinner the boundary layer). And it varies with the wind speed of course! If I took a glider and started looping in wide circles - hitting 500 ft at the apex and maybe 100 ft at the nadir - straight into the wind - would I gain any energy? Would it be DS, as in Dynamic Soaring, or just BS, as in bull shit? RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
[RCSE] Re: RE: Robbe does!
All, Competition electronics has been making chargers to do this as well. They are called the Turbo chargers. You can vary the charge in fine increments up to 10 Amps. The discharge rate on some are Fixed at 4 amps but will give you a calculated capacity for 10 amps. I think they make another one that does 20 and/or 30amps. Not sure about the 40 amps. I think I'd save that abuse for the flight. Jim 01bedfe9.278d53a-@craftsman wrote: original article:http://www.egroups.com/group/soaring/?start=39984 These types of chargers have been made for years. Check out the RC Car section at your hobby store or online catalog. Tekin BC112 with the Tekin DIS350 is my favorite: http://www.tekin.com/prod.html There are more expensive ones by Competition Electronics: http://www.towerhobbies.com/listings/listchgr.html and others. Jerry R. Craft VWP -Original Message- From: Tord [SMTP:[EMAIL PROTECTED]] Sent: Thursday, August 05, 1999 6:41 PM To: RCSE Subject: [RCSE] Robbe does! Rich Hollyday wrote: What we really need, not currently made, as far as I know, is a high current charger that uses this technology for fast charging flight batteries, at 10 amps, with a discharge pulse of 40 amps! Thermocouples (or something!!) would be needed to cool things and it would be expensive. Hope this helps! Robbe (and thus Aveox, I guess?) have decided to change to this charging technology, and will thus have chargers for any need using reflex charging. The only grumble I have with the Sirius is that it emits a lot of electric noise - the Robbe Infinity is so much better in that respect! Don't place TV antennas, shortwave radios or other sensitive equipment nearby! Tord, Sweden -- If reply difficulties - use [EMAIL PROTECTED] Tord S. Eriksson, Ovralidsg.25:5, S-422 47 Hisings Backa, Sweden 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] Re: Graupner Spoilers
Mark, Call Hobby lobby they still have them. I think they just try to keep current products up on the site. Jim [EMAIL PROTECTED] wrote: original article:http://www.egroups.com/group/soaring/?start=39986 I have a Graupner LS-4 kit I am going to start soon and it requires Graupner Nr. 1000/25 spoilers. Are they still available. The Graupner site and Hobby Lobby didn't have any specific info on them. Will Multiplex spoilers fit? Any other options? The wings are pre sheeted foam that are routed for the spoilers already. Cheers, Mark 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]
