Rudder Trim, how to?

[Dbro172]

I didn't think I had a rudder trim problem but looking at this photo I took recently may indicate that I do, and would explain why my right fuel tank guage rarely comes off the full stop during high cruise.

So question is what (and how) is an appropriate starting point for a fixed rudder trim tab?

[rleffler]

While not a fixed rudder trim, you may want to take a look at this.

http://aerosportproducts.com/ruddertrim.htm

I have one in my RV-10 and it works great. It's really easy to install.

[pierre smith]

Derek, I set my table saw at a 10? angle and cut a 1 1/2 inch wide piece of wood ten inches long. I duct-taped it to my rudder and went flying. It was way too much so I cut it down to about 8 inches...it's now 7 " and the ball's in the middle. I attached it permanently with two dabs of RTV.

That was 6 years ago and it's still in place.

Best,

[RKellogg]

Derek, maybe you have seen this parallel thread...

http://www.vansairforce.com/communit...d.php?t=119510

- Roger

[chazking]

What are the pros / cons of the Aerosport rudder trim solution?

Is the Aerosport adjustment more / less sensitive than an electric trim solution?

Is the Aerosport approach an after-build solution (should an electric trim not be installed)?

[Rupester]

You can also buy a rudder trim wedge from Avery .... it's about 6" long and you "try and adjust' from there as Pierre indicated. Mine ended up just under 4" long.

[jj_jetmech]

You could also reset the incidence of the VS/offset. More work but you wont have a wedge glued or riveted to your rudder.

[pazmanyflyer]

Originally Posted by chazking

What are the pros / cons of the Aerosport rudder trim solution?

Here's my take on the system

Pro's:
Lightweight
Simple design
Easy installation (and removal if needed)
No wedge needed (cleaner look)
No need to run new wiring to tail
No need to remove/modify rudder to install (no downtime)
Less expensive than electric trim

Con's:
Contorting to funny and uncomfortable shapes while working under the panel while installing

Is the Aerosport adjustment more / less sensitive than an electric trim solution?

It can be fine tuned for all flying conditions. I believe it to be easier to dial in than the electric trim. You can sneak up on it rather than over shooting with a trim switch then...blip..trim switch the other way cuz you went to far...blip...back the other way...etc.

Is the Aerosport approach an after-build solution (should an electric trim not be installed)?

Part 1 - Yes. Part 2 - That is your call. Builder discretion.

[Aerosport1]

Another big plus for the Aerosport Rudder trim is that it keeps your rudder
from swinging side to side when parked outside. You only need a gust lock
in much higher wind conditions. This is a real plus. It will never slam against the rudder stops and snapped them off.
Not a wedge or electric trim will do this.

Geoff