Anyone use this sprocket hub adapter?

[dryheatbob]

https://www.ebay.com/itm/80cc-MOTOR...395273&hash=item2a3c15854e:g:z8EAAOSwm~1cHAIv



and is there any reason it wouldn't work with a 7 gear cluster?

Thanks!

 

[mark20]

https://www.ebay.com/itm/80cc-MOTOR...395273&hash=item2a3c15854e:g:z8EAAOSwm~1cHAIv



and is there any reason it wouldn't work with a 7 gear cluster?

Thanks!

check your hub circumference, most 7speed bikes are a 1in and most single speed coaster brakes are 1.5in.

id get something like this.
https://www.ebay.com/itm/40T-Sprock...a=0&pg=2047675&_trksid=p2047675.c100005.m1851

 

[dryheatbob]

Thanks Mark. Idiot me I was measuring at the outer flange. thanks!

 

[mark20]

Thanks Mark. Idiot me I was measuring at the outer flange. thanks!

Welcome!

 

[dryheatbob]

Well, crud. I measured the hub diameter with a micrometer and it's 1.25in. No one makes or carries a adapter that is that size- any suggestions on a shim material to use with a 1.5in adapter?

 

[mark20]

Well, crud. I measured the hub diameter with a micrometer and it's 1.25in. No one makes or carries a adapter that is that size- any suggestions on a shim material to use with a 1.5in adapter?

Are you measuring the smallest part of the taper? If so you can buy the adapter i linked and shave the spacers down with a sanding drum

 

[dryheatbob]

If i'm understanding what you mean by taper, it doesn't have any- the hub a perfect cylinder from flange to flange. Looks like shaving down a spacer is the way to go. Thanks again-

 

[mark20]

If i'm understanding what you mean by taper, it doesn't have any- the hub a perfect cylinder from flange to flange. Looks like shaving down a spacer is the way to go. Thanks again-

Ah makes sense, then you would have to shave the spacers, just remember to both sides evenly!

 

[Deleted member 29011]

1.25" Sprocket Right Here

 

[dryheatbob]

1.25" Sprocket Right Here

Brother I wish I had been patient enough to wait for your reply! I followed Marks advice and shaved down a 1" adapter. Worked out fine but took a lot of work and patience to get it right. Thanks for the link- I'll use that next time!