Another winter project.....building up a Ciocc Mockba 80 as a dedicated "climber" for this summer's Ride the Hurricane in Olympic National Park. Just under 5000' of climbing over 18 miles.....no need for anything resembling big gears.

This will be a 1x7 drivetrain with a 39 or 40 tooth chainring pulling a friction shifted 14-32 Suntour New Winner freewheel. Cogs will be 32-28-24-21-18-16-14. One of my goals for this project was to spend as little money as possible. Read that to mean use as many on-hand parts as possible. I have a Sugino Super Maxy crankset with 110 mm BCD that opens the door for a variety of small chainrings. This crank requires a JIS taper spindle, but the Italian bottom brackets I have on hand have ISO tapers. Shimano makes cartridge style bottom brackets that will do the job, but why buy new when you can hack something together?

Examining the parts, I discovered the Campy 70-SS ISO taper spindle and the Sugino JIS taper spindle have the exact same spacing (55 mm) between bearing centers. The bearing ball diameter is identical is well at ~6.3 mm. The only difference is the ball retainer for the Sugino bearings is a wee bit larger than the Campy retainer and would "rub" on the inside of the cups. Soooo, I installed the Campy fixed cup & bearing, the Sugino spindle, and the Campy adjustable cup & bearing. Fit up was perfect and the spindle turns super smooth. Even the chainline is good!

Picture below. The gray primered fork in the background will be a tale for another day.

Dean