wrote:
Geschwender used the Morris Hy-Vo chain in his redrives, and they
worked well. That chain has teeth that engage sprockets that look like
gears instead of sprockets, and as the chain curves onto the sprocket
the teeth spread and get tight between the sprocket teeth so there's
no slop.
See http://www.alternate-airpower.com/
and http://www.fairmont-mn.com/altpower/psru.html

Dan

Ford used a set up like this in the transfer case on some 4 wheel drive
trucks so the parts could be available that way...

Tony