Hello Bootlegger,
This is where I show how I make
1/2A bell cranks out of free plastic
Wal-Mart "gift cards".
https://stunthanger.com/smf/12-a-building/gift-card-bell-cranks/ These work great and with double
or triple layers are probably strong enough
for a .15.
If you look at my Focke-Wulf build you can see it
in use.
https://stunthanger.com/smf/12-a-building/focke-wulf-190d-stunter-build/I wrote:
The picture shows the "Gift Card" bell crank
I made for the FW190.
It's 2-7/8" x 0.5" between holes mostly because
that span fits in the wing.
I didn't scrape the graphics off the card this time
and I just sandwiched it between the two layers.
I did a test with CyA and it bonds the plastic well.
These cranks are decently stiff and strong but
because this will be buried in the plane I took the
time to add bushings made from some K&S
aluminum tube. Probably wasn't necessary.
The entire assembly with the axle and spacers
weights 2 gm - 0.1 oz.
Hope this helps.
Cheers! - K.