Roll Trim on RV10

[markarfarms]

I’m building a 10 and am getting close to closing up the wings. My question is, is roll trim a necessity on the 10 or more of a “I’d like to have” item?

 

[rocketman1988]

I’m building a 10 and am getting close to closing up the wings. My question is, is roll trim a necessity on the 10 or more of a “I’d like to have” item?

I use it all the time (auto trim)

 

[atwoodm]

In my opinion you need it. I'm also building a 10 but flying a completed 14. If you are going to put in an autopilot, it will use it constantly. And unless you plan to switch fuel tanks every 10 min for balance, you'll use it a lot as well. Very easy to install and you won't regret it. My $0.02

 

[Richard Connell]

IMHO you need it as well. Noticeably more so if you opt for ER tanks.
The auto trim is surprisingly busy.
I haven’t tried it to quantify , but based on what Ive observed, I would estimate that much more than 12-15gal of imbalance for a 10ER would use up all the available trim.

I have my tank change set for 5gal (20L) and these days tend to look at where the auto trim is every 5Gal and then decide whether to switch or not - aiming to keep the trim neutral. It varies depending on who is (or isn’t) on the pax side front and back.

 

[markarfarms]

I’m planning on using the Garmin G3X. How does it all work together with auto pilot servos and trim. Just a little hazy on all of that.

 

[543TB]

I’m planning on using the Garmin G3X. How does it all work together with auto pilot servos and trim. Just a little hazy on all of that.

It works very well if you use the Garmin servos and the Ray Allen trim. The servos alone will not provide manual trim, but they can all be integrated within the system and connected to either panel switches (sold by Ray Allen) or put on the sticks, which is what we did using the Ray Allen G407 grips. The G3X install manual has wiring diagrams to help you and this website has a wealth of information.

 

[BobTurner]

I’m building a 10 and am getting close to closing up the wings. My question is, is roll trim a necessity on the 10 or more of a “I’d like to have” item?

My two cents: on my -10 I have no aileron trim, but do have a Trio Pro autopilot.
When hand flying vfr I don’t miss it (aileron trim).
With AP engaged I don’t need it.
When hand flying in IMC I wish I had it.
So necessity: no. Nice to have: yes.

 

[Bavafa]

I’m building a 10 and am getting close to closing up the wings. My question is, is roll trim a necessity on the 10 or more of a “I’d like to have” item?

The only necessity thing is an engine, prop, seat and fuel. The roll trim is one of those nice thing to have that doesn't cost much and pays many times over to have.

 

[markarfarms]

Thanks everyone, I think you have pointed me in the right direction!

 

[Antknee]

Thank you all as well, I was just on with Stein and reviewing roll servo wiring and realized I didn't order this because I thought the roll servo would do it. Who knew! Then I mentally have been doing the DA-40 I had didn't have it, only had pitch trim, is it needed? I get it now and will run wires now.