rear derailleur alignment
05-28-15, 08:52 PM
#1
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rear derailleur alignment
Rear Derailler on my Road Bike
when in gear closest to spokes. Pulley is rubbing on my spokes.
need to realign the deraileur./ done this before on other bike but been awhile
What screw do i need to adjust. As I able to get in all my gears well, just pulley rubbing on spokes.
What do i need to do to align properly. Thanks
when in gear closest to spokes. Pulley is rubbing on my spokes.
need to realign the deraileur./ done this before on other bike but been awhile
What screw do i need to adjust. As I able to get in all my gears well, just pulley rubbing on spokes.
What do i need to do to align properly. Thanks
05-28-15, 09:05 PM
#2
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First, the hanger that the derailleur attaches to could be bent. If the bike was crashed or fell hard on the right hand side, the hanger could be bent inwards. Check that first, either with the correct tool, or calibrated eyeballs.
Once you know the hanger is good, then the "L" low limit screw controls how close to the wheel it can get. Take a close-up peek at the derailleur to see how it works.
Once you know the hanger is good, then the "L" low limit screw controls how close to the wheel it can get. Take a close-up peek at the derailleur to see how it works.
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05-28-15, 10:37 PM
#3
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+1 or more.
I'll lay odds that the hanger is bent.
You can check for yourself by shifting to a gear where the RD cage is closest to vertical. Then have a friend hold a broomstick or similar straight edge vrtical against the right side of the rear wheel. Squat well behind the bike and eyeball to see if the cage is parallel to the broomstick, or tilted in at the bottom.
Whatever repair or adjustments you make will start from a straight hanger, otherwise you're wasting you time.
I'll lay odds that the hanger is bent.
You can check for yourself by shifting to a gear where the RD cage is closest to vertical. Then have a friend hold a broomstick or similar straight edge vrtical against the right side of the rear wheel. Squat well behind the bike and eyeball to see if the cage is parallel to the broomstick, or tilted in at the bottom.
Whatever repair or adjustments you make will start from a straight hanger, otherwise you're wasting you time.
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Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
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05-29-15, 12:34 AM
#4
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Well I have not had crash on the bike nor has it fallen over. So not sure. However i did take rear wheel off last week and it did go thump when i put it back int the bike though as its a little awkward with the fitting . maybe that could have put the hanger out of whack
didnt get chance to look at bike thoroughly but does look like a small slant to the derailleur, could be the hanger, however not sure if should pull the hanger since, my frame is fully carbon fiber.
gears have been shifting really well still so i think its the hanger
didnt get chance to look at bike thoroughly but does look like a small slant to the derailleur, could be the hanger, however not sure if should pull the hanger since, my frame is fully carbon fiber.
gears have been shifting really well still so i think its the hanger
05-29-15, 05:29 AM
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Check the hanger first, if it is not straight you will be unlikely to get good results with adjustment. A good local shop should have the correct tool. Someone could have knocked your derailleur while it was parked without you knowing; it has happened to me. Be sure that you have gotten the wheel properly seated when you put it back; set the bike upright on a level surface, loosen the quick release and be sure that the bike has settled into the dropouts by gravity before you engage the quick release again.
05-29-15, 01:03 PM
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Check the hanger first, if it is not straight you will be unlikely to get good results with adjustment. A good local shop should have the correct tool. Someone could have knocked your derailleur while it was parked without you knowing; it has happened to me. Be sure that you have gotten the wheel properly seated when you put it back; set the bike upright on a level surface, loosen the quick release and be sure that the bike has settled into the dropouts by gravity before you engage the quick release again.
