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 Remove Crank Arm With Stripped Threads
I show how to remove square taper bike cranks with stripped extractor threads where a puller won’t work. This method will allow you to remove a crankset without a regular puller tool. I used a 3″ three jaw gear puller tool such as used to remove pressed on pulleys and gears. I bought the tool …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 »
Overhaul Vintage Italian Bottom Bracket
I diassemble, clean, replace the bearings, lubricate and re-assemble the bottom bracket on a 1974 Atala road bike. I also replaced the cotter pins which required filing new ones. Here is my video on making a cotter pin press:
Removing VERY Stuck Crank Arm With Damaged Threads
I battle to remove a hard stuck crank arm with damaged threads. I managed to get it off. If it hadn’t come off when it did, my next step was to heat up the crank arm with a heat gun while the puller had it under pressure. The aluminum might have expanded slightly allowing it …Read more »