Eric Baley and Patrick Vestal test the Baley-designed tandem FrankenCopter....
Eric Baley and Patrick Vestal test the Baley-designed tandem FrankenCopter. Using T-Rex parts, custom machined aluminum, 3D printed parts, G-10 side frames and other CF sandwiched balsa, Patrick assembled the beast and quickly handed the transmitter to Baley who attempted to hover it!

Michael K.



4 Comments
Just a quick clarification -- the heads are not SAB -- they are Align heads with 70 durometer dampeners for maximum flappiness™.
Once we sort out the transmission issue, which we will, Eric and I both believe this will be a fun, great flying model. (Take that, Vario)
If you were wondering what the gears looked like, or even if you weren't, here they are in all of their "meth-mouth" glory.
Thanks for the clarification!! The crowns have lost their luster!
Hi Patrick. I am curious where you managed to source the 70º dampers from to fit the heads. This is a coincidence as I was thinking of doing a project just like this at 600 size. I was considering using Roban metal crown gears as they would be stronger that the plastic ones. I don't know if the teeth on the main gears would fail as the next weakest point using the metal gears but it might be worth a try. Regards Jonathan
Ha! There’s still a precious few teeth on those gears!
The goal of this experiment was born from fun with the Twinn Rexx models, and wanting a larger tandem featuring two-servos per swash, while trying to economize the Vario option. So far for the wallet it’s a win - as long as I ignore the investment of time in design and manufacturing. But that’s part of the fun!
When we get past these “teething “ problems 😁, this will be a smooth and well behaved machine. Due to the light disc loading, I’m encouraged how well it flew at such a low head speed.
Linking to the original maiden flight post: https://scalehelipilot.com/discussions/0261ec84-7185-47b5-a82c-349a...