One more thing and I'm outta here, we've milked all we can out of this one.   

Using my trusty Tsubaki Chain Length Calculator I've determined the ideal center distance for 16/39T and 110 chain links to be 25.679" and for 14/39T and 110 links to be 25.975".  Axle would only move back .296" so a 110 link chain should work nicely with the 14 T front sprocket.

On the other hand, for 14/39T and 108 links the center distance would be 25.347" so the axle would move forward .332".  Considering the amount of slot in the swingarm ahead of the axle with a new std chain and sprockets, it looks to me like the 108 link chain would also work.

http://tsubaki.com.au/tsscs/chain_length.htm

very good!  Its a 108.  Dont know why i got that instead of a 110. eh, as long as it will work

cool thanks all!!

Any reason why one may want to conver a pre-94 GS to use the hubbed sproket or is it plenty good to stick with the stock type?

Jenya

Now that you mention it, I wonder if too many pre-'93 bikes exhibited "stripped" splines on the countershaft?  Adding the hub would spread the torque out a bit, and exert less force on a given spot on the countershaft.

Anyone?

I assume that if converting, all that needs to be changed is the spacer. right?

Jenya

That's a "Roger" ... I don't think any of the other parts have changed over the years.

HOWEVER ... according to [THIS OLD POST] by Bob Broussard:

Quote from: Bob Broussard on September 27, 2004, 11:19:34 PM
Unfortunately the spacer is pressed on the shaft, so you can't just replace it.  It requires a complete disassembly to replace the shaft.

Luckily, he also says:

Quote from: Bob Broussard on September 27, 2004, 11:19:34 PMBUT, I wouldn't worry about it for a long time. You should be able to get many more miles before the splines go.

Also, true to form, Bob was willing to go out of his way for another GS'er.  (I couldn't say whether he is still able to supply parts like this.)

Quote from: Bob Broussard on September 27, 2004, 11:19:34 PMIf you do decide to replace it, let me know. I have lots of transmissions.
I'll send a complete shaft ready to drop in. 

aye. jack and kerry. a combo which cannot be beaten