John Foss <john_foss@asinet.com> wrote:
>What I do with my cotterless mountain unicycles is to give the cranks a
>little tighten before every ride. Almost all cotterless unicycles have a
>14mm nut on the cranks, so you need a 14mm socket wrench.
Tightening cotterless cranks with two 2"x4" blocks of hard wood, a 24 oz
hammer and a 14mm socket wrench:
-
Put the cranks on and hand tighten the nuts
-
Tighten the nuts with the socket wrench till they are “snug”.
-
Place one block of wood on solid ground such as a concrete floor.
-
Lay the unicycle down with the axel part of the lower crank on the
wood block. -
Hold the second wood block over the axel and pound this wood block
hard with the hammer several times in line with the axel. -
Tighten the nuts with the socket wrench till they are “snug”.
-
Lay the unicycle on its other side.
-
Repeat steps 4-7 above 4-6 times.
-
Tighten both nuts so they are extremely snug, but be careful not to
apply too much force so the threads become stripped.
I’ve never had a crank come loose after or damaged any component using
this procedure.
The top wood block and hammer could be replaced with a rubber mallet,
but I’ve never trusted that the rubber mallet could pound the cranks
on enough, so I’ve never used a rubber mallet.
Sincerely,
Ken Fuchs <kfuchs@winternet.com>