G
Gerrit Van Wijk
Guest
I think it could work. I don't need anything smaller than a 22 but for others with a 4 arm crank who
would prefer a 20 tooth chainring... Cut a ring out of 1 mm thick steel. Drill 4 holes to fit a
current 4 arm mtb design (64 spacing). Drill 5 holes to fit an older 5 arm mtb design (58 spacing).
Attach the adaptar to the 4 arm crankarms. Attach a 20 tooth 58 chainring to the adaptor. You could
even make an adaptor for a rear cog (18, 19).
crossposted.
would prefer a 20 tooth chainring... Cut a ring out of 1 mm thick steel. Drill 4 holes to fit a
current 4 arm mtb design (64 spacing). Drill 5 holes to fit an older 5 arm mtb design (58 spacing).
Attach the adaptar to the 4 arm crankarms. Attach a 20 tooth 58 chainring to the adaptor. You could
even make an adaptor for a rear cog (18, 19).
crossposted.