1966 CB77 Restoration Project

[G-Man]

Seadog

Yes absolutely. You'll enjoy the process. There is a possibility that whacking one end of the crank will move the other end. You should check both ends again before you 'finish' and put it in the case.

G

Thanks, G. I think I understand. The flywheel is simply cocked on the crank pin and by striking the high outer edge, I'm trying to level it. Okay. I'll try to find a copper mallet and given it a go.

Perfect result for understanding what is happening.

OK - here we go. Cradle the crank in your arm with some cloth (an old sweater or coat is fine) around it to dampen any 'ringing'. Leave the 'wonky end' exposed, but support the rest.

With a copper mallet (not a steel hammer), strike the perifery of the flywheel hard, once, next to the high spot. You're trying to move the flywheel around the crankpin so that the shaft runs concentrically.

Next - put it back in your measuring setup and check what happened. If the 'runout' didn't change, you didn't hit hard enough. If the 'hi' has reduced you have moved it and need to use how much it moved to judge how hard to hit it next time.

If the hi has become the low, you hit it too hard....

Be prepared to go 'too far' and need to hit it back the other way.

I can guarantee that when you've got it within 1 thou, you will have a grin from ear to ear...... :-)

Feel free to ask questions. In a PM if that is easier.

Good luck!

G

[Seadog]

Thanks G. I'm actually looking forward to it. Should be fun. I'll report back.

Seadog

Yes absolutely. You'll enjoy the process. There is a possibility that whacking one end of the crank will move the other end. You should check both ends again before you 'finish' and put it in the case.

G

[Seadog]

Well, I'm ready for the attempt as UPS delivered this today. 4 lbs. of persuasion. Of course, I had to walk the neighborhood to find the house that they actually delivered it to, #@!&**!

[Geoff Hastings]

Old mechanics saying " if in doubt, give it a clout"

[Seadog]

Old mechanics saying " if in doubt, give it a clout"

Well, I’m old, Geoff, so I guess I’m on the right track.

I’ve been beating this thing all morning and have reduced the runout from 0.014 to 0.002 on the right side. It’s certainly not a difficult job. The meter setup after each blow takes the most time.

Back to it.

[Seadog]

Down to less than 0.002 on the right, but I’m chasing the high spot around the weight. Enough for today.

[G-Man]

A big improvement on what you had!

That last bit is the hardest.

G

Down to less than 0.002 on the right, but I’m chasing the high spot around the weight. Enough for today.