ORIGINAL: Sukhoi4Me
Getting ready to order the gear for the Extra and I need some opinions.
I am wondering if 2 each per wing 5955s are overkill? I currently have 1 ea on my 50cc Sukhoi.
Yes they are overkill but not by a lot. They certainly won't hurt anything, and for $20 each over the 5985 if you can afford them then use them.
I am using 985s which are plenty and the analog servos make it less significant if I have a slight linkage misalignment, which I do not, they are set up perfectly. The way to test this is as follows. Leave the screw that holds the ball link to the servo arm a litle loose on 1 of the servos. Turn on the power so you can work the controls from the transmitter. The one that is loose should still be loose at center and at both end points. If it has bound up at any of these three points then your linkage needs to be adjusted.
Once you finish this test don't forget to retighten the screws.
The alternative would be to go with 2 ea per wing 5985s.
Or 2 ea 985s, same power as 5985, cheaper, and more forgiving of a slight misalignment. Just use less expo to get the same feel as 5985.
Batteries. Not going the A123 route just yet. Will 2 2600mah packs for the servos and 1 2600 for the ignition be plenty?
Enough? probably so. Plenty? No.
Li-Ions through a regulator will never have the oomph of an A123 directly wired. What you have will fly the plane fine, but I'd bet you are losing a little servo performance at very high loads. IN other words I'd bet it will snap differently with better power supply. Other than that what you have should work fine.
And also, what length extensions and how many do I need?
2x 36" for elevators
4x 24" 2 for outer ailerons and 2 for throttle/choke
2 x 12" for inner ailerons
2 x 12"Y connect to receiver to have a place to plug in ailerons
Your use of the power expander may change this.
TF