Aileron hinge block area questions

[Dave Stroud]

I've got a couple of questions about dimensions in the area of the aileron hinge blocks at the inboard end of the ailerons. Starting with the wing side of things, looking at the accumulation of thickness', we have one 1 3/4" hinge block, a 1/4" thick rib brace, a 1/4" rib, a 1/8" rib plate a 1/4" space, then on the aileron side....a 1/4" aileron end rib and finally the 1 3/4" aileron hinge block. That totals about 4 5/8" . Page 50 on the plans shows a 3" long 1/4" bolt for this. The materials list shows four 3 3/4 " bolts. The material list also shows two feet of 3/8" bushing stock which I thought might be for the aileron hinge blocks  but may be for some other place on the plane. The plans narrative says to use hobby shop brass tubing. What did others do here ? Any ideas appreciated. Thanks..

[Jim B]

Dave
I used the brass tubing from the hobby shop.  It works great.  For the hinge bolts, I measured for the length I needed and cut some long AN bolts I had to size.  This makes for  very smooth and easy movement in the aileron.
Jim

[Tom XL-7]

The bushing stock is your wing mount, tailfeather hinges, and tailfeather mounts. it is bushing stock because it is likely to be distorted during welding and is to be reamed to size. I don't own any reamers, but I will buy what is needed.
Tom XL-7

[scottiniowa]

Stroud,  Jim B did in a very standard way, and this material is very common in most hobby shops.

on the  supplemental plans I had drawn out I used Delrin,  for a super smooth working surface that just loves steel pins.  And also acts great as a spacer, machines excellent and so on.  Both work well and weigh almost the same.  This area was not intended for steel bushings.   Unless you absolutely have nicely oiled so they never rust up, steel pins in steel bushings on a ultralight that never flys in the winter, requires a much closer inspection come spring.  One or the other could wear, and you would always want that to be easily checked.  Plus they weigh more than the first two mentioned.

cheers