Shim size

[Psam]

Hi all.  I'm rebuilding a 1962 A10 Super Rocket and have determined there is 0.024" crankshaft end float. I ordered the appropriate thickness shims and have received them but am uncertain that they are the correct ones. The O.D. of the drive side of the crankshaft on which seats the inner roller bearing measures 1.18" whereas the I.D. of the shims I have measures 1.25".  Does that sloppy a fit not matter since they will be inboard of the bearing or do I have the wrong shims, please?
Thanks in advance,
Paul

I posted this on the Britbike forum, also, so if you've already seen/responded to it there, please ignore this.  Thanks

[limeyrob]

I'm doing this job next week so I have a pack of shims in the shed.  Its a filthy night so I'll take a look tomorrow. I did a trial assembly of the shims and I recall they are a clearance on the inner dia as they sit up the radius on the crank so the bearing pushes up against the crank face.
An added complication - check yours - is that my bearing has spun at some stage and worn the face a little so I've had to modify a shim to sit in that then put a normal one on top.

[Psam]

Thanks, Limeyrob. Luckily the grind is smooth and the old and new bearings are tight. That said, mine does not have any radius on the drive side to speak of and the inner race butts right up against the counterweight web.

[muskrat]

G'day Sam.
There should be a small radius where the shaft meets the web of about 0.050". There is a larger radius on the bearing inner. The iD of the shims need to be bigger to fit over the radius and be flat on the web.
Cheers

[trevinoz]

Shouldn't that crank diameter be 30mm?

[muskrat]

Good one Trev.
30mm = 1.18" 
Cheers

[Psam]

Great.  Many thanks for all your replies.
Paul

[trevinoz]

Thanks Musky, I had a brain fart and confused my imperial/metric comparisons.