On Mon, 12 Jul 2010 14:57:21 +0000 (UTC), Jeff The Drunk wrote:
They make a tool you can screw on the end of the crank to bang on so you
don't mess up the thread at the top.

I bought that tool; it was useless.

The physic is shock as in an impact wrench will drive the screw
tighter or looser with less effort and less chance of breaking things.

While this shock and awe effect didn't work for me, I do understand what
you're implying.

Basically, from Physics 101 back in college, dynamic friction is less than
static friction.

So, what you're saying, I think, is by banging on the flywheel (actually
banging on anything would work as well), you set up vibrations, which allow
things to move with just a little bit less friction.

Well, at least that explanation makes sense. It didn't work. But it makes
sense!