Hubs and Wheels

Since I run an off road motorcycle oriented business I end up with a bunch of pretty cool pieces of junk. Usually its cheaper to replace the damaged component for the customer. I’ll keep it if the customer does not want the old parts and if its of interest to me. That’s how I got this rear hub, the sprocket side bearings had damaged the hub. Just plain poor maintenance but I put the fix to it for the DMS and I had a matching new front hub too. These are mid 90’s Honda CR hubs, strong and light and they kept the basic design the same for a long time, they just plain worked well! The drum brake version for my bike will be the 1979 YZ400 front end assembly and the rear drum will be a 1985 Honda CR Rear hub, This was the peak of drum brake technology before going to discs for the Asian brands.

I centered and aligned the hub on my rotary table to enlarge the damaged bore and make it deep enough to accommodate 2 bearings on the sprocket side.

The finished repair bore

I then turned an aluminum sleeve on the lathe, this was dimensioned so the new repair sleeve would interference fit into the hub only after it had been heated to insure a secure fit.

Initially I used rods and cones through the steering head and the S/A pivot to make reference marks to center. Then I was able to align the sprockets so I could start machining on the wheel spacers. With the reference marks to center that were laid out I could now easily use a laser to align 2 reference points and easily pick up my centerline.

Adaptor collars were made to fit the standard 17 mm rear axle, CR’s were larger. All bearings and seals are off the shelf standard parts. Satin Black finish was applied.