[/quote]
David,
I just read through your entire thread over on RCSB- very nice! I'll be using your thread as a ''guide'' as I go. I do have a few questions for you- are you concerned about the weight issue with having 4 servos in the tail? Id really like to go that route but I'm concerned with all the talk of keeping the tail as light as possible.
Second- did you use the phenolic sleeve for the wing tube? just seems like a pain to insert the outer panels into the center section without them, no?
[/quote]
BigE,
thanks for the kind words. I thought a lot about the elevator servos. I considered Gold-n-rods with servos near the CG, but I read a lot about the plastic in them having a very different coefficient of expansion to balsa, so people had to retrim their elevators every time they went to the field and the temperature was different. The main build threads I have been using, by Jarnt and Sweeper over on RCSB, both put one elevator servo in the tail. I wanted 2 for redundancy. Unfortunately I couldnt find a mini servo that was strong enough for the job (per Ziroli recommendations). The extra 2.1 oz servo in the tail will cost me up to 3.2 oz extra in the nose. Tough call, but I decided it was worth it. Jarnt used Evolution 26 engines and his was very close to balancing with 3 servos in the tail. Sweeper used glow engines. Remember you save some tail weight by not having those bellcranks and goldnrods back there.
I dont know anyone who used the phenolic tubes, they just arent needed. I have installed my wings and removed them many times, it is not hard to get them in the slot.
If you havent already, check out these threads. Jarnt flew his in 2009, very nice work. Sweeper has been building his for 10 years, its nearly done and is museum quality work, but I dont think I would ever have his skill or patience. Flying Lindy used Ryobi 31cc engines, bellcranks for the rudders, goldnrods for elevators. I have summaries of Jarnt and Sweeper threads I can PM you if you want them, they help finding the page you want a lot faster.
http://www.rcscalebuilder.com/forum/...319&PN=1&TPN=1
http://www.rcscalebuilder.com/forum/...137&PN=1&TPN=1
http://flyinglindy.homestead.com/b25construction.html
David