bike wrench

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A place to ask bicycle repair questions, and for bike shop monkeys to share advanced non commercial wrenching resources (no YouTube self promotion). This is only for repair related topics.

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How do you get your shifters to sync properly? (lemmy.world)

submitted 4 days ago by scutiger@lemmy.world to c/bikewrench@lemmy.world

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I've been biking my whole life, but I've never had a bike that shifted properly. Like I've literally bought a bike, and right from the shop, the shifter's clicks don't line up with the gears properly. And then it's a game of going up two clicks and then back down one to get the chain lined up properly.

So how do I get it just right? The bike I have has Shimano twist shifters all the clicks numbered, but the numbers don't line up with the actual gears.

The closest I've gotten it is where it works perfectly when the bike is on the lift, but as soon as there's weight on it, it goes out of sync again.

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[–] Iconoclast@feddit.uk 1 points 4 days ago

Some bikes need derailleur hanger adjustment straight from the factory. On my bike it changes depending on how tight the rear tire quick release is. I need to calibrate it with the wheel on and then try and tighten it equally much every time after I'v removed it. You can mess with the derailleur settings for ever without getting it to shift smoothy if the hanger is not aligned.

I don't even have the hanger calibration tool btw. I do it with a meter long steel ruler and pliers. Every time I catch a rock with the derailleur and shifting goes to shit I simply just re-calibrate it. I never touch the adjustment screws again after the first setup.