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Elevator trim options and opinions .....

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MadProfessor8138

Well-Known Member
Joined
Nov 3, 2015
Messages
1,144
Location
Ekron,Kentucky
I searched through the threads and found a few discussions on the topic of elevator trim solutions but I'm still undecided as to which approach I will take for the RW19 Stork that I'm working on.
Top speed for the Stork should be around 100 mph but the elevators are pretty big with a lot of surface area.

Trim options :

1. Trim adjustment in the cockpit on the stick.

2. Trim tab on the elevator using a 20kg rc servo built into elevator driving a pushrod to the trim tab,servo driver mounted in cockpit for servo adjustment and a converter to change 12v to 6v to power the system.

3. Trim tab on elevator actuated by a cable that runs to a lever on throttle quadrant.

I understand that a elevator trim tab with play in it can cause flutter with serious results.
I'm not sure how to make a trim adjustment on the stick but maybe someone has a design they could share.

Opinions as to which route would be best for elevator trim.........stick or trim tab ?

Kevin
 
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