[RCSE] Wing Spar Design

Let's discuss wing spar design, and as a spinoff, the modes of spar failure. I'm specifically looking at built-up wings, strong enough to withstand heavy-pedal winching. I'll chime in more as the discussion heats up, but my initial spar design in built around spruce main spars with CF laminat

[RCSE] Wing Spar Design

Let's discuss wing spar design, and as a spinoff, the modes of spar failure. I'm specifically looking at built-up wings, strong enough to withstand heavy-pedal winching. I'll chime in more as the discussion heats up, but my initial spar design in built around spruce main spars with CF laminat

[RCSE] FOR SALE - Predator-4

Here's an opportunity for someone to drop a receiver and battery pack into a Predator-4 and fly! Specs: 2-JR 351 flap servos 2-JR 331 Ail. servos 2-JR 341 rudder / Hitech HS 545 BB Elevator (full size) 124" ws quad taper 7035 airfoil 74oz flying weight 1 year old no crashes/dents, Yellow fus

[RCSE] winglets, bird tips

The link below is to a very interesting article about winglets etc. It is a low math content introduction to reducing induced drag. http://aero.stanford.edu/reports/nonplanarwings/nonplanarwings.html Highly Nonplanar Lifting Systems Ilan Kroo, Stanford University John McMasters, Boeing Commerc

[RCSE] Bravo to Mike Kovacs for the slope list.

Many years ago there was an attempt made via the RCSE to construct a list of slope sites in the USA. It was a valiant effort and resulted in a text based list. Unfortunately, it was of limited use. But NOW, Mr. Mike Kovacs has made a resource that is actually usable! His slope list on the web is

[RCSE] Wanted 2m 550 Electric

Howard Rudy's post for a 2M Royal Electosoar got me wanting to buy something similar for my son. If you have a 2m or larger poly electric for a reasonable price - please reply directly. 2m must have 2-pc wing for shipping. Goldberg 550 power pod would work as well. Thanks, Mark RCSE-List faci

[RCSE] Rx for Sale

I have a Airtronics 8 ch PCM Rx with a 12 crystal for sale. I will be at the SC2 Poway contest this sunday the 21st. It was recently checked out by Airtronics. $60 -- Bob Pope [EMAIL PROTECTED] Laguna Hills, CA RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsu

[RCSE] Super V - For Sale

I have a Super V 103" +/- for sale & ready to go. We stretched it a bit to get more squares, but with all the great handling/landing as the 100" and better. Just charge battery and fly. Set up for a JR radio. Will work with Airtronic's radio also, but you will need to change channels on the receiv

Re: [RCSE] Training switches (was radio trouble!)

Also, most, if not all the switches are inactive anyway, until you activate a mix, or dual rates, or exponential, etc. Even the trainer switch doesn't do anything unless you go into the menu and activate the trainer function. Gluing switches seems a bit extreme. And besides, how do you know y

[RCSE] EPP U-2 Spyplane update

Hello all interested parties, I have posted additional photos of the U-2 spyplane from out in the field. They can be found athttp://members.aol.com/Rpvi4/u2.html They include: 1) Rich Loud's U-2, shown flying in New York state, with a link to his recent U-2 kit review in R/C Soaring Dig

Re: [RCSE] Untwisting a Foamie Wing?

Thanks fot the input, folks. The wing is now straight and true. I rememebered last night that the DAW site does have excellent instructions on "tweaking". http://www.davesaircraftworks.com/ Here is what I did: Since the covering film is adhered to the foam, you w