[bruceh]

The manual aileron trim instructions for RV-7/9 say to shorten the F-6124 trim bracket that fits between the center seat ribs to 3 13/16". It comes in the kit at 4" wide, and that seems to fit just fine between the seat ribs. Laying it on the F-939 forward seat floor in prep for match drilling it looks like if I trim it, it will be too short.

Are the plans wrong here?

 

[John Tierney]

Fit Between Ribs

The bracket needs to be trimmed on the edges to fit between the seat ribs, under the rib flange. I think if you left it the full 4" it would push the ribs apart and the screw holes would not line up.

 

[bruceh]

Nevermind!

Just went back in there and sure enough the seat ribs are not in the correct alignment. I put a few clecos in them to get the ribs back in alignment, and now it looks like the dimensions are correct on the plans.

I'm just paranoid before I start cutting and drilling!

 

[Jeff R]

It is good to be paranoid! If something doesn't look right or seem right, it often isn't, and there are a number of times I wished I had stopped to think about something before rushing in. So, it is good that you are looking and thinking about what you are doing and asking questions before committing yourself.