Cranksets

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Convert From Cottered Crankset to Square Tapered Cranks/Bottom Bracket

I show how to replace a vintage cottered cranks/bottom bracket to a newer style square taper bottom bracket and crankset. Covered is removing the cottered crank set and bottom bracket, measuring, and choosing a new square taper BB, and installing the new bottom bracket.

Convert One Piece Crank To Three Piece Crankset/Bottom Bracket

I show how to replace 1 piece (“Ashtabula”) cranks with modern 3 piece cranks using an adapter. These one piece cranks were mainly found on older American made bikes like Schwinn, Huffy, Ross, etc, BMX bikes, and childrens bikes. The bottom bracket shell is larger and the cups are pressed in. But with adapters, you …Read more »

Convert From Square Taper to Hollowtech II Bottom Bracket/Crankset

How to remove square taper bottom bracket/cranks and install a Shimano Hollowtech II bottom bracket and crankset. The bottom bracket is a Shimano Ultegra 6800 (BBR60). Most Hollowtech II bottom brackets will require a Park Tool BBT-9 or BBT-19 tool, or equivalent. Due to the smaller diameter bearings/cups of the BBR60, I needed the newer …Read more »

How To Measure Crank/Chainrings Size BCD

I show how to measure a chainring or crank to be able to replace a chain ring. The main things you need to know are the number of teeth and the BCD (Bolt Center Diameter). Well, and the number of holes. I show what to measure and how to calculate or look up the BCD. …Read more »

How To Make A Cheap & Easy Cotter Pin Press For Cottered Cranks

I show how to make a cotter pin press tool for cottered crankset removal from old bikes. This can be made for around $5. Park Tool used to make a cotter pin press (CR-2) to remove cranks, but they don’t any more. To make the press, I use wide throat top beam clamps that I …Read more »