View Full Version : 1" neck with 7/8 stem?

09-13-2010, 5:28 PM
So i know they have a conversion for a 1" stem to put in a triumph frame. But do they have to opposite? Im trying to put a triumph front end on a spartan killer frame. Normally i would just buy a new front end but the frame was built to the length of this front end. And i really dont wanna put much more money into this project as i am over it all ready and will probably sell it when im done.

Ps anybody wanna buy a 65 triumph Spartan Killer frame project? Its all there you just need to put it together.

09-14-2010, 12:13 AM
I also need the answer to this. I have the conversion on my triumph for a 1" steam but I want to swap front ends to a early sporty front end with a 7/8 neck. Any suggestions?? I want to use the narrow glide I have on it for a new build.

09-14-2010, 11:18 AM
I'm pretty sure lowbrow customs has a 1" and 7/8" conversion kit.
Not sure if this is what you're looking for.

09-14-2010, 11:44 AM
This might help.



09-14-2010, 10:21 PM
Thanks but this doesn't take a 1" neck to fit a early sporty 7/8" stem. Do you think I can use a sleeve around the stem to fit the ID of a 1" timken taper bearing??

09-14-2010, 10:23 PM
Sorry for the highjack but I have been in my garage for several nights contemplating what front end I want to use on my new build.

09-15-2010, 10:11 AM
Dunno the accuracy of this but someone posted the same question on JJ and a senior member posted that you could use this kit from V-Twin MFG to do the trick.
P/N 49-0086


Hope it works out for ya.

09-15-2010, 10:22 AM
I think I just went through this with my early sporty- my donor bike had a fair amount of cross pollenization / pollution :)

My motor was a '73. The frame was a '67. The lower tree and neck had a casting number that ended in -62. So I think this was more correct for the '67 frame.

I always assumed the front end was 7/8ths. When I got new neck cups and upgraded to timken style bearings they didn't fit. Paughco says you have to do some modifications- either upgrade to 1 inch neck cups and bearing and shim the neck- Least recommended. Or machine the neck. Which is what I ended up doing. We cut the neck out of the lower tree- cut it down to 7/8ths and welded it back in. I've got a good welder / machinist whom I bring peppers from my garden so it only cost me 30 bucks or so to have done...

Similar issue?