Frame & Fork

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How To Measure A Bike Frame

In this video I show you how to measure a bike frame. I created a previous version of this video when I was shopping on eBay and craigslist for bikes, and people didn’t know what size of frames their bikes had, and they didn’t know how to measure them. My previous video has gotten lots …Read more »

Straightening A Bent Derailleur Hanger

When shifting the rear derailleur up to the biggest cog, the cage was hitting the spokes. The cage seemed to be angled in compared to the cogs. I checked the derailleur hanger with my Park Tool DAG 2.2 Derailleur Alignment Gauge and found it was not straight. I used the tool to straighten the hanger. …Read more »

Destroyed Derailleur/Bent Twisted Hanger – I Can Fix This!

I found a free Trek dumpster bike with a broken mangled derailleur. It was ripped in half! And the derailleur hanger was twisted around almost 45 degrees. The bike was trashed, but hey, it was free! I am guessing the derailleur hit something, and the cage was torn from the body. Maybe the cage got …Read more »

6/7 Speed Freewheel To 8/9/10 Speed Cassette Bike Conversion

I upgrade my vintage road bike from 12 speed (2×6) with downtube friction shifters, to 16 speed (2×8) with STI brifters. This process includes expanding the rear triangle (chain stays/seat stays) from 126mm to 130mm between the dropouts so the wider wheel will fit in the dropouts. You only want to do this on a …Read more »

How To Measure A Bike Frame

Many times when I see a bike for sale, the frame size is not listed. I ask the seller what the frame size is, and they don’t know. And they don’t know how to measure it. I usually explain how to measure the frame size, but sometimes they still don’t understand since they don’t know …Read more »