So, my project bike has gone totally awry and keeps changing its mind. Someday I'll compile all these post together for it, but for now I just need to flush out the most recent issue... cush drive.
While waiting for a rear hub to come in, I decided to go ahead and lace up my new rear rim to my front hub and mock it up on the rear swingarm/frame. OH.. MY.. GOD... I love it! 17"x4.5" 40 spoke HD rim laced to a 1976 cb750k front hub looks so amazing, I think I just wet myself.
Just spoke with Buchanan and ordered a set of stainless spokes/nipples to make it lace up correctly (It's only dummy laced now, and not in the correct pattern/spokes/number of spokes), but the mock up is sweet!
The problem lies herein: front hub equals no cush drive... Hmm.
I already have in the works a front plate conversion for the front hub to mate my '96 GSX-R 750 rotors to (inspired by Funjimmy and his cafe interceptor project here
http://forums.sohc4.net/index.php?topic=27159.0), but I'm thinking with a bit more planning and some research into cush drives and the various components therein, I can easily alter the funjimmy front hub plate setup to accomodate a cush drive on one side and a rotor on the other. I'll have to weigh the options...
option 1: obtain cush drive dampers from an existing bike, preferably going for something lower in profile/smaller in overall diameter. This way, I could use the donor sprocket carrier and drive dampers, but would have to fabricate/cast/machine the hub-side component of the cush drive. This component would then get attached to the hub in a fashion similar to funjimmys' approach. Would likely use sprocket from donor as well, not sure of size yet as I don't have anything sourced (actually, I do have a sprocket and carrier from a 2007 cbr600rr I could use, but no damper to measure.)
option 2: use the cb750k sprocket carrier and dampers, as well as the hub side of the cushdrive system. I would, in doing this, sacrifice a rear hub and remove all material, leaving the cush drive section, the main section of the hub (center section, has relief holes in it) and then be forced to orient and mount the new section to the hub, also in a fashion similar to funjimmys'. Nice thing here is I could use the stock sprocket and not have to worry about figure out chain/sprocket size issues. Downside, I have a big bulky chunky mass on the rear wheel again.
So, any thoughts or concerns?
