[Jorge518]

So as I was changing my drive belt and going to a 34T sprocket I broke the clutch hub on removal. I ordered a replacement Twin Power hub and new bearing, had it all pressed onto to clutch basket and after trying to install it I realized that the stock nut wont secure the hub. My question is what am I missing do I need a different nut to secure the new hub

 

[gb1500]

looks like it is the wrong one for the bike...or you could use a spacer but looks like the nut needs to sholder up into the c-bore in the hub a ways

 

[burnse66]

Those molded standoffs on the original hubs appeared weak to begin with. Years ago, I touched one and it broke right off…
I also considered the possibility that they may have been broken off before and perhaps glued or epoxied on in their original spots by those who have replaced belts on my FXR before.

 

[Thermodyne]

That's not going to work. I would contact Twin Power and see what they have to say. Email them and attach that photo.

[email protected]

 

[tall terry]

I think the hub bore is too large??? That's what it looks like to me.
There are only 2 taper. Shaft dimensions from 1937 to 83, and 84 to 87 iirc,, i vote for a badly machined hub taper...
Call where you got it from...

 

[gb1500]

that was my first impression... that the lathe guy missed/wrong cut this one in the pile

 

[Jorge518]

looks like it is the wrong one for the bike...or you could use a spacer but looks like the nut needs to sholder up into the c-bore in the hub a ways

This part is listed for the 84-89 and it seems to work for many just wondering if I’m missing something like a spacer

 

[Racepres]

This part is listed for the 84-89 and it seems to work for many just wondering if I’m missing something like a spacer

If you Jam it on, or get it in place, and "biff" it on snug, does it require any effort to remove??

 

[Jorge518]

Had some time today to compare the stock hub to the TP-hub and it appears to be the right one it seats on the taper good, So I mounted it on the tapered shaft and ran the nut onto it. I thought the nut would bottom out at the end of the threads before it tightened the hub but I was wrong, the nut can thread past the end of the threads and tighten the hub, seems the threads on the shaft are larger than the shaft and allow the nut to travel just past the threads.

So I think Im good to reassemble everything this weekend will update when its all together

Thanks for all the input

 

[Racepres]

Triple check the Key... Especially if you went with a "new" one. If any bit Proud, you will be having Problems..

 

[gb1500]

you may need a precision thick spacer

 

[gb1500]

i would....prob last longer on a tapered shaft.... but thats your call