Hi all, long time no see.
I am buying a new wheel set for the SOHC CB750. Going with Sun rims and stainless spokes+nipples. About $900+ from Buchanans if I lace it up myself.... Since they are cutting custom spokes and drilling the rims to fit, I figured this is as good time as any to change out the rear drum brake.
So why change the drum on a CB? Namely, this one is a pseudo CR750 race replica build, and the CR bikes had a big 240mm 2ls rear drum brake. I think the stock CB is about 178mm (and it sucks). Anyway, I have been shopping off and on for a CR rear hub for many years without success. I am not willing to drop $3600 for 3M Racing's "authentic" magnesium reproduction. Besides, for daily drivability practicality, I would prefer a "CR Style" drum made out of aluminum.
All that had been all but forgotten until earlier today when I almost bought the wheel set, only to remember the whole rear drum thing as I entered my card info at checkout.... LOL. So the purchase went on hold until I can sort out what I need to do with the rear hub.
Questions:
1. Does anyone know of a reasonably priced 2ls rear drum that could be an alternative, one in aluminum not mag. In all honesty, I cant even think of a machine with an aluminum 2ls rear hub assembly.
2. Another option I've considered but not really looked into is finding a 2ls front drum articulating plate and shoes that fit the CB750's rear hub/drum -- hopefully one with the speedo drive on the drum side. Any suggestions there?
CB750 rear brakes dimensions:
Width 39mm
Diameter 178.5mm
Axle 20mm
Granted a rear disc remains an easy and often desired option; I even have a Super Sport's rear spoked disc setup sitting in the workshop. But in my opinion, while the stock drum was not enough brake, the disc was too much brake for the CB. In all honesty, a 2ls rear brake might just be the perfect compromise. Plus, this one is a CR replica, so the aesthetic of the idea especially appeal to me. If it was good enough for Dick Mann, it hopefully will be good enough for me.
Thanks for the feedback/suggestions.
Peace and grease,
- Steve
EDIT: crap --
http://forums.sohc4.net/index.php?topic=80460.0You're already discussing this!
After reading that thread I suspect that the more linear onset of dual trailing brakes might be the way to go. I know I have little intention of trying to delicately listento my toes in riding boots as I apply the brake.
-steve