copelab

Danny:The throttle trim lever on my JR8103 tx does not work.The throttle stick is ok.I use the trim to shut off my engines so it is
used a lot.Do the pots get dirty an is it possible to give them a shot of contact cleaner?
Bob

dsnyder

Is this on one model or multiple models? Is this by any chance on a new model, or have you reprogrammed anything? First check your travel adjust values for the throttle channel and make sure that they are not 0% or close to 0%. If they are, rework your throttle linkages to use higher travel adjust values. If this is something that has just started on a model you have been flying for a while, and have not changed anything, go to your servo monitor and see if there is any movement of the throttle channel with the throttle trim with the stick below half throttle, preferably at low throttle (idle). If the servo monitor moves but the servo does not, then the problem is in the model. If the monitor does not move, there may be a problem with the transmitter.

copelab

Thanks for the info Danny.I tried different combinations of throttle and sub trim values along with the
mechanical linkage.Works fine now.
Bob