RE: Robart P-38 - Engine mounting question
OK, Lynn, thanks, and you are now officially my best friend. Yours looks very nice indeed, and your comments about the Robart model make me feel much better. I have a wood version in construction (have had for a long time), but I got this one for a song, so it is now first in line.
I have no documentation on this bird, so I need a little advice about "how it is typically done".
First, if you could review the first post, and tell me if your engine mount setup is similar to the photos of mine.
Second ... the outboard wings are plugged in via bayonette plates that go into aluminum channels, which are bolted to wood structure in the fuselages. Not the usual tubes in sleeves. Is yours this way as well?
Finally ... elev/rudder servos. Mine has the rudder servos mounted just aft of the retract door openings, so they have a long (flimsy) pushrod. I am seriously looking at putting all four elev and rud servos in the horizontal stab. I've laid it out and it will work, but I am worried about CG. Four servos in the tail is equivalent to 8 oz, roughly 48 inches aft of the CG. This means, if the bird is balanced before I move the servos aft, I would need nearly a pound 24 inches forward to counter the servos. How did yours balance? Those booms feel very heavy, so I could be making a bad situation worse if it is already tail heavy. Now, the G62s are not light, so maybe they are the offset. No matter what, I'll check balance before I commit to anything, and decide from there, but I'm curious as to how you did yours.
Regarding the DA85's ... maybe someday. I have these G62s (electronic ign) in there now, and unless the general consensus is that they will not fly it, I'm sticking with them.
Regards,
Rikk