ORIGINAL: JesseV
Hi Everyone,
Well, my LT40 is almost ready to fly
. However, I have a question with regards to servo movement. I'll try to provide as much detail as possible and would appreciate any input and advice you can offer.
Airplane: LT40
Engine: O.S. .46LA
Radio: Futaba 9C
Servos: Futaba 3004
Problem: I set up the throtle control per the SIG manual. When testing the radio controls, the carburator is fully closed before the throtle control reaches the full down position. I have adjusted the linkage attachment points (both servo arm end and throtle arm end) for minimum travel, but I am not able to reach the desired servo position to allow engine idle at the full down throtle stick position.
I know the tx has end point adjustments, and it is possible to make the adjustment there. However, will that adjustment work if another radio is used in trainer mode?
I hope I have provided enough details for you, if not I should be able to answer any additional questions.
I would appreciate any advice you can offer.
JesseV
The adjustment will not work with the usual buddy box.
When you said you "adjusted the servo and throttle arm for minimum travel", did you use the outermost hole on the throttle arm ? You need to use the hole closest to output shaft on the servo and the most outermost (furthest away ) on the throttle arm. Doing it this way I have no problems adjusting for throttle.
Another thing you can try is to use a HiTec servo for the throttle and use the "sliding arm" servo arm. Often, you can get closer to the output shaft of the servo with this arm than you can with a standard arm. The HiTec servo arms WILL NOT WORK with Futaba servos.