Here's another small Gotcha. Photo=1,000 words
The C-670 Bushing is pressed into VA-165 Mixture Bellcrank.
When the bellcrank is bolted to VA-164 Mixture Bracket, it doesn't freely rotate unless the bolt is left loose enough so it rotates. The result is friction against the flanges. Not correct in my mind.
The bushing should be captured by the bolt between the flanges so the bellcrank can rotate freely on the bushing.
Maybe not the correct fix, but I drove out the bushing. Then the Mixture Bellcrank was reamed to 3/8" and polished. A tiny bit was removed from each side of the bellcrank so the bushing was a few thou wider. A bit of Lubriplate applied. Slip the parts back together. Now when the bolt is tightened, the bellcrank rotates either way freely.
Yes, I scratched it a little. I have touch up paint.
Ditch the Vans bushing. Every time I reassembled and tightened the bolt, the bushing swelled and the bellcrank froze up. Go to the local hardware store aviation department and but a steel spacer bushing. I got one 1/4" ID X 3/8" OD and almost exactly the right length for less than $2. A little sanding and polishing and the bolt can be torqued to spec. Bellcrank rotates like butta!
Estes Park, CO
wirejock at yahoo dot com
Donated 01/01/2021, plus a little extra.
RV-7A #73391, N511RV reserved (2,000+ hours)
HS SB, empennage, tanks, wings, fuse, working finishing kit
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.