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Builder Name:Bob Collins   -  
Project:   Vans - RV-12iS   -   VIEW REPORTS
Total Hours:1055
Total Expense:$101645.34
Start/Last Date:Jan 04, 2017 - No Finish Date
Engine:Rotax 912iS
Propeller:Sensenich
Panel:Dual screen G3X, autopilot
 
Friendly URL: https://eaabuilderslog.org?s=BobCollins

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Sep 15, 2022     Installed autopilot pitch servo - (1.5 hours)       Category: Avionics
First an update on installation of the roll servo and the questions I had, which have been answered by Eric Rushting at Van's. The plans show a zip tie through the lightening hole in the servo bracket. That keeps it off the fuel shutoff valve. Also the ground wire is attached on the nut side of the most aft bolt on the left side. I tried getting a little more slack out of the harness but it's pretty tight. Something to keep an eye on.

Moving on to the pitch servo, it's a tad more straightforward, at least insofar as getting the DSUB connector through a slot. I mounted the servo after attaching the pushrod to it, then attached the push rod to the the tab on the control column. All good. I didn't put torque wrenches on most things but I pretty much know what 25 inch pounds feels like.

Earlier in the avionics instruction, it said to attach the ground wire to a rib. In this section, however, it says to attach it to a screw and nut on the servo. I emailed Van's support for clarification as I'd already attached it to the more outboard rib.

I added the protection on the cutout where the dsub went through the rib but I really don't like how it sits. I think I'll add a bunch of RTV there.

The section in the instructions notes how critical the autopilot disconnect switch is but apparently the backordered silk-screened instrument panel pieces includes the center console which I had installed. So I'm debating taking that out which will require a fair amount of work since I already installed the control cables. That includes the long one to the fuel shutoff and the short one to the engine throttle. Do I really want to do that just to make the center console pretty? Probably but I don't want to do it right now. And, frankly, I may not do it at all.

[Update] From Tony Kirk at Van's:

Hi Bob,
L6341 is a ground wire for the wingtip lights on a Dynon system. If you are installing a Garmin system you won't have this wire.
I would install the servo ground as per 44BiS/U-04. It probably doesn't really matter though.
Thanks,Hi Bob, L6341 is a ground wire for the wingtip lights on a Dynon system. If you are installing a Garmin system you won't have this wire.I would install the servo ground as per 44BiS/U-04. It probably doesn't really matter though.


 


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