So, set me straight here- you guys are going from 145mm (5.7") of shock travel, to 64mm (2.5")? too wacky, what did I miss? Is there a difference between stroke and travel?
A quick search says R1's shock travel is 5.3" (sounds more plausible), so about 1.5" of sag should be the target.
I put Speedy's lowering block on my '09, which, beside lowering the seat height, seemed to have the effect of taking some of the harshness out of the rear ( I already had the pre-load at minimum). Still not really what you'd call supple, but enough improvement that I turned my attention to the front end (did the Gustavo mod, I like it!).
So maybe I'm back to the rear, and using a "take-off" shock from a higher-spec bike is the kind of thing that appeals to me- reduce, re-use, recycle! But if you need to source a new spring, then possibly rebuild the shock to get enough rebound damping to keep up with the spring, where's the logic in that? Is this why the shock that Russo's using might be a better choice? The rebound damping circuit was designed to cope with the spring?
The stuff I've been reading on it makes it look like the shock is not rebuildable but could be rebuilt!?!- http://www.superhawkforum.com/forums...t=17193&page=2