Mountain Bike Rear Derailleur Bent

Weird since i ve bent cages too. A rear derailleur is a pivoting parallelogram attached to the cage that swings on a different plane or something like that. Every best mountain bike rear derailleur review contains valuable information about the description in addition to the pros and cons of each model.

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Do you have any tips on how to straighten it back out.

Mountain bike rear derailleur bent. You just cut your drivetrain problems in half. For older bikes with front derailleur issues the solution is quite simple. Since you are having a hard time getting the exact photo we all need just look really closely at that hanger. Having a spare derailleur hanger on hand is always a good idea and it s something that i make a point to purchase with every new bike.

I show how to fix a bent derailleur hanger without expensive tools like park tool s dag 2 derailleur hanger alignment gauge. My bike fell over on the drive side and bent my derailleur hanger. Remove the front derailleur and replace the chainrings with a single 1x specific ring and wide range cassette. I ve bent few hangers in my day.

This repair is meant for steel frames with integrated hangers. The derailleur hanger is the piece of metal that the rear derailleur attaches to near the rear axle. Typically the derailleur hanger is supposed to be at right angles to the rear axle when seen. If it is then try a new rear d since the cage isn t bent either.

On most bikes this is a replaceable piece of aluminum which is designed to bend or break when stressed rather than causing costly damage to your frame. All 10 speed shimano mountain bike components are also inter compatible you could for example use an old 10 speed xtr m986 rear derailleur with new deore m610 shifters. Peter wants to know. Shimano altus mountain bike rear derailleur.

With that said even with a new hanger they re rarely in perfect alignment. The rdm310 model shimano altus mountain bike rear derailleur is a traditional top normal with a 43 teeth chain wrap capacity. That looks like the derailleur is somehow bent and not the cage. Trying to bend a hanger or the parallelogram part of a rear derailleur to compensate for or repair a bent derailleur is almost certainly an exercise in futility and frustration.

We will stick to problems that plague rear derailleurs as 1x setups are common on most modern mountain bikes. It must be parallel to the cogs.