Roll Trim System

This weekend I spent a few hours working on the roll trim system. I’m using the Ray Allen trim system from Vans, so everything is nicely packaged together into its own subsystem.

Modified trim bushing block

I started out by modifying the plastic block that holds the pivot arm. This needed two holes drilled through it foe the AN3 bolts that hold it to the aluminum plate. I also botched the larger counter bored hole to allow access to the cotter pin that holds the pivot arm in place.

Mounting plate drilled

I then trimmed and match drilled the mounting plate to the seat pan holes. This allowed for a perfect fit. Once I drilled the two holes on the left, I temporarily installed it to drill the two holes on the right to the floor ribs.

Original hole and new hole in ribs

Here you can see the original hole where the nut plate was. I removed the nut plate and then used the center hole to mount the plate in order to drill the bottom hole. This was done on both sides of the center channel.

Cutting the pivot arm to the right length

I then cut the pivot arm tube to the right length so it can sit in the block and then be mounted to the metal plate. I cut off about an inch of tube. Once I did that I drilled a 1/16th hole for the cotter pin.

Mounting plate completed

After drilling the block to the mounting plate, I dimpled, and mounted the nut plates to the mounting plate. I will complete this plate by priming it before final installation.

Pivot arm installed into block

I then installed the pivot arm into the plastic block, and then installed the washer and cotter pin to hold it all together.

Test fitting the assembly

I then test fit the assembly by installing the bottom two screws. The top two are where the floor is held on to the ribs. The pivot arm needed to be adjusted to not rub on the control rod.

In the bottom left is the servo block. I need to drill that to the floor rib for final installation as well.

The final thing to do next time is to finishing the assembly with the control stick springs and cleaning up the assembly with some final adjustments.

Roll Trim System

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