ORIGINAL: ses
I have not seen any discussion on motor mounts. As a rule, I usually use some type of vibration mounts on 4C's over 120. Most mounts I feel have too much movement and make setting thrust alignment impossible when the mount can move +/- 5 degrees. Not to mention the fact openings in cowls need to be larger to accomidate the movement.
I'm folowing this thread with great interest, as I'm soon to build my 2nd CG Ultimate...
As for the engine mount, I'm planning on using a similar setup as on my F3A plane. Hopefully, I'll build a Hyde-Mount and mount a nose-ring for correct thrustline. My first Ultimate was powered by an Os1.20, and needed quite a lot of right thrust. The new plane will be powered by a Saito 1.50, so even more right thrust may be needed...
Here is a link to the Norwegian F3A Champion with instructions on building your very own Hyde-mount:
http://home.online.no/~ofremmi/HowTo.../HydeMount.htm
Same person with a low-tech nosering arrangement:
http://home.online.no/~ofremmi/MyHan.../funtana_s.htm (scroll down to "the new engine mount, June 2001" )
I'm looking forward to seeing some Ultimate videos from across the pond
-Keep up the excellent work!!