Derailleurs

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Disassemble & Re-assemble Campagnolo Gran Sport/Valentino Front Derailleur

I take apart a vintage Campagnolo push rod type front derailleur, clean it, lube it, and put it back together. The derailleur in the video is a Campagnolo Gran Sport. But the Campagnolo Valentino front derailleurs worked the same way, but were just more plain looking.

How Indexed Shifting Works On A Bike

I show and explain how indexed shifting works on a bicycle with the shifters and derailleur working together to move the chain to specific cogs on a freewheel/cassette. The bikes in the video have Shimano SIS (Shimano Index System) derailleurs, but indexing works the same on other brands of drivetrains such as Campagnolo and SRAM. …Read more »

Replacing Simplex Derailleur Pulleys

The pulleys on Simplex rear derailleurs were notoriously brittle and would crack and break. And they got worse with age. The pulleys on my vintage Peugeot UO-8 were broken and chewed down to nothing. But like many other things on French bikes, they were made to different size specs than most other bikes. The bolt …Read more »

Long Cage vs Short Cage Derailleurs – Which Do You Need

I have had viewers asking me whether they need a long cage or short cage derailleur for their drive train changes. I explain how to calculate the number of teeth worth of chain that you need to match to the total capacity (aka chain wrap) in the derailleur specs.

Bike Noises – Find Them To Fix Them

Bikes can make the strangest noise. Squeaks, creaks, clicks, grinding, whirs, ticks, clunks, etc. The first step in fixing a noise on a bike is to locate where it is coming from. But noises can tricky. They can sound like they are coming from one place, but are actually coming from another. I talk about …Read more »