Dial a trim

[fastj22]

A bellcrank used to increase the throw at the spring may work. For my Waiex I bought a Dial-A-Trim but it is still in the shrink wrap.

With your Waiex, you have only two choices, the Dial A Trim or designing an electric substitute that basically does the same thing, but with more range.

[nwawingman]

I would leave the manual trim ,I jflown both and much rather have the manual trim with the small lever on the left side. That's also what my Sonex has and works great
Adam Simmons

I will second that Adam! I love my old style trim lever setup. Simple and very effective. I will say that I have never used the dial a trim system.

[Tony Lewis]

I have flown both and definitely prefer the trim lever.

I modified my lever to be longer and be able to move it with my index finger with my hand resting
on the throttle.
But even in the stock position it is more positive and reliable than the dial-a-trim.
I now have 1,400 hours flying with a stock trim so what do I know.
Just my opinion.
Tony Lewis
N447XL

[radfordc]

There never has been enough up trim on landing. You just do the arm strong method.
I suspect the conventional tail maybe does a bit better in the trim regard on landing, especially if it has the movable tab. Anyone care to comment on that last part?

Larry
Waiex121YX

My Sonex had a trim tab and it was not able to trim out the nose down effect during landing with flaps. It's really not an issue as the forces aren't very much to deal with. Make the trim system work during cruise flight and don't worry about the landings.

[Bryan Cotton]

Hey all,
I have a question on routing of the cable. It would seem easy to route it along the same path as the rudder cable. Another option I could see would be under the wing spar, like the nosewheel brake line routing. What did others do for routing?

[Sonex1517]

I routed mine over the top of the main spar tunnel on the pilots side, and under the seat pan.

[Bryan Cotton]

Thanks Robbie!

[Rynoth]

I also went along the rudder cable until past the spar tunnel on pilots side. Then attached it at a few points along the bulkhead between fwd/aftfuselage before coming forward under the seat pan. Makes for gentle turns in the cable.

[Bryan Cotton]

Thanks Ryan! We have our cable routed. I also made a little phenolic knob for my wheel. I drilled and tapped for a #8 screw and that is the pivot. Seems to work well for quickly changing from one extreme of trim to the other.

[T41pilot]

[/quote]
Nope, thats why I replaced mine with an electric trim system that will handle an infinite range. Same idea, a static spring and a dynamic. the dynamic is attached to a 12V motor spool via a cable that winds up or spools out based on a DPDT switch on my stick. Use a similar system for a wing leveler.[/quote]

John
I'm going with electric trim as well. I was considering using a linear actuator but am interested in your motor and spool idea as well. Can you provide the details on what motor and spool was used and where to source them? What was the approx weight of the setup? i have some leds on my panel to provide trim position so I'll be adding a potentiometer to the setup to provide some position data.