mikes68charger

My Feedback: (34)

Hey guys quick question for ya.

Haveing built a lot a different war birds I really feel better when I can install elevator servos as close to the tail as possible, but a kit im working on has them in the middle towards the cg

But corsairs are always tail heavy.

So for those who have been doing this longer than me. Dose the nose weight different much more from 2 servos in the tail vs all the parts needed to put them in the center of fuze?

Thanks mike

lawrence b

Hey Mike,
I don't think the weight difference is much between a long carbon fiber pushrod or a servo mounted in the tail. I always mount the servos as far forward as I can and use a carbon pushrod. If you do this be sure to support the pushrod somewhere in the middle of it's run. I find doing this allows me to work on the servo's if need be and I can't stand when someone mounts the servo on the outside of the fuse for the rudder and elevator controls, using pull-pull or a pushrod allows a much cleaner installation.
And I have yet to add tail weight to a scale model!

Just my 2cents worth,
Larry

radfordc

My Feedback: (14)

If you measure the distance from the CG to the tail and then to the nose you will get a ratio....for example 5:1. This means that a two oz servo in the tail will require 10 oz of weight in the nose to counterbalance. On my Skyshark P-40 I installed the elevator servos in the tail, but moved the rudder servo to the center and ran pull/pull cables.