Topic: 1978 CB750K Front Axle Distance Collar (bearing Spacer) need dimensions

[jariuscs]

Hello all

I recently took the front wheel off my 1978 Honda CB750K to see why my speedometer wasn't working, and noticed the wheel axle wasn't very tight, I noticed after a bit of tinkering the spacer between the 2 bearings is missing.  How in the world someone forgets about the spacer when changing bearings is beyond me.  But any ways I was wondering if anyone would be kind enough to give me the dimension ideally the ID, the OD, and the length, and I'll just make my own.

thanks in advance.

[BenelliSEI]

The original has fingers on the end to keep it centred. I have several, just outside TO. Where are you? I could send you one….. Or measure tomorrow.

[jariuscs]

I really appreciate the offer, but I don't mind making one at all, I work at a metal shop, I could easily make some tabs to go with the spacer, unless you happened to be from Winnipeg, Manitoba, Canada

If you could give me some dimensions I would be very grateful.  Thanks

[jariuscs]

Bump. Still waiting for dimensions for a front wheel spacer, if anyone could get them for me I would much appreciate it.  The bike needs to get back on the road!   

[scottly]

The only critical dimension is the length, and the tabs aren't necessary; use the axle to center the spacer when assembling. I'll try to measure one tomorrow...   

[jariuscs]

That wood be awesome. I will wait for the length dimension.

[scottly]

I measured a K7 spacer, which should be the same as the K8:
Length 2.936"
ID .605"
OD .857"

[BenelliSEI]

OD 21.7 mm, ID 15.5 mm, OA length 74.5mm. They are an interesting design, but you actually have to bend the tangs at the end to knock the first bearing out. A plain spacer would work just as well.

[jariuscs]

Thanks a lot guys for the info.  I have made one now,  and the bike is back on the road.

thanks again.

[BenelliSEI]

Good news!