Topic: Offset sprocket

[bert96]

 Anyone know where i could buy a front offset sprocket for my cb750 k4?


 Bert

[Alan F.]

There are ten of them on ebay right now when I search for:

honda cb750 offset sprocket

[bert96]

Can't find one that fit my bike!
Got a link?

Bert

[Alan F.]

3/8"=9.5mm fits K4

https://www.ebay.com/itm/256070473212?hash=item3b9efd55fc:g:1nUAAOSwESdcmAN3&amdata=enc%3AAQAIAAAA8Hd%2F5my6sWcpJvxLfJt8tmAJ14%2FXgV%2FabIcmuv1FvrfKubcVuqqn3Fvt9xb6F%2BA%2F67S3L52xP%2FIM38pbc1G5seO9%2BoIVqlXblXXQtGP44ogiY1gD0XcQ9wbUFBI8wXbRID6FZeyh8EhcO1vCb6nFKAP27P6JarA1yn85TprSwHRjvFO2naLp5quTyZhvmOEUBsaPxXaorY7nPIFc6QFYGRySjIPQOa3fbW3M4fbao9VVj%2BjjY7RGtC4NjnFEoyFe0Z8hykJtX60X2U4EJnu3JQ%2BrXQJnzMpKHTuMmv4HYN1vOWJZw%2FaD0wMF4f9%2F%2FDOnGA%3D%3D%7Ctkp%3ABk9SR9K-rv-8Yg

eBay item number: 256070473212

[bert96]

This model does not fit my K4....

[RAFster122s]

Bert it doesn't fit because eBay says so, or because you know this? I don't trust eBay parts list, wrong 25% of time

[bryanj]

Ebay probaly says it doesnt fit because its not standard for a 750k4.
Why do you want an offset sprocket anyway?

[robvangulik]

This model does not fit my K4....

It should fit all 750 from '69 to '78, what's different on yours?

[bert96]

I need a sprocket with the center like this

[bert96]

Not like this

[bert96]

But thats ok,i found a seller from Germany who make sprockets. He said that he can make what i need.


Bert

[denward17]

Did you check JT Sprockets catalogue?

[bert96]

Yes,i did. But they only have for the 750,900 and 1100f.


Bert

[enwri]

Do you need the bolt holes, because that looks like the splines of a 77-78 sprocket.

[bert96]

I need a sprocket with the center like this

Yep, the bolt holes are different for k bikes.

[enwri]

77-78 don't need the retainer bolt holes. It's also a 630. non offset on a 25mm shaft.
cb750 k7

 OK you're talking about the retainer holes not the splines.

[Airborne 82nd]

I think he needs the two extra holes for a 74. The 77-78 does not have or need them they use the large center bolt. The offset is the issue. How much offset? The 77-78 have a 10mm offset but it is on the rear sprocket carrier.
icbw but don't think so
Airborne

[Airborne 82nd]

Yes,i did. But they only have for the 750,900 and 1100f.


Bert

But you have a 750

[bert96]

 750 K. Not a. F.


 Bert

[Airborne 82nd]

I know you said you found someone to make one. But could you explain what it is you are doing? Did you change something in the rear?

[bert96]

 New wheels,New swingarm New everything!

[calj737]

But thats ok,i found a seller from Germany who make sprockets. He said that he can make what i need.

Bert

Bert - they’re pretty easy to make. Take your existing sprocket, weld on a spacer on the backside, just be sure to index the sprocket so the retaining groove is still usable. I made one for a member in CO, but I had to turn the outside radius down to allow for the retainer (550 motor).

Took about an hour start to finish, even with the welding.

[bert96]

 No vibration at all!?!


 Bert

[calj737]

No. Why would there be? Welded parts become a single component. And you can get even closer tolerances by using a lathe to turn down the thickness to 100% match the offset you need.

[bert96]

 I don't have access to that...


 Bert