Comments on: Front Derailleur Adjustment

By: Marcia O. Lee

Marcia O. Lee — Mon, 09 Aug 2021 09:39:05 +0000

I recently upgraded components on my bike, which included of the Bafang motor, New chain ring from Luna and 11 speed cassette. I’ve been experiencing difficulty with my chain that I have not found a cure for. The chain tends to ride up on top of the gears at your regular intervals. I have a picture and would post if possible. I was originally told that the chain would have to seat itself overtime but after 150 miles, I’m still getting this problem. Any thoughts?

By: Dalton Bourne

Dalton Bourne — Mon, 19 Jul 2021 11:32:20 +0000

There are times that your bike derailleur is damaged, which prevents the bike gears from shifting. The way to fix bike gears that won’t shift: You should locate your bike derailleurs accurately. Bike derailleurs are responsible for shifting the bike gear and keeping the bike chain in place. To determine the shifting problem, you can determine whether your bike won’t shift to the highest gear front. Identify the cables that lead to the derailleurs and look for the adjusters. Rotate the cable adjuster anticlockwise if you observe that shifting is difficult while lowering the gear, keep the adjuster tight. Ensure that the derailleur shifts successfully in every turn of the gear wheel.

By: Montague Bikes

Montague Bikes — Mon, 14 Sep 2020 16:17:11 +0000

In reply to Tan. Front derailleur clamp size is 34.9mm on all Montague bikes.

By: Tan

Tan — Sat, 12 Sep 2020 08:58:52 +0000

What is the band clamp size for the Front Derailleur on the Montague Bikes?

By: Dave

Dave — Fri, 24 Apr 2020 13:35:22 +0000

when replacing a cable, i’m struggling to get the correct tension to start the process. For example, should I:
a) big rear and small front rings
b) fully loosen high and low screws
c) tighten the shifter adjuster all the way – clockwise
d) pull the wire and clamp — this is where I struggle — not too tight but ensure I can use the barrel adjuster to tighten as necessary

Then continue with the process you describe. Does this sound correct or should I start this process another way? Basically, I think I need to adjust the tension via the clamp bolt to really start this process and I can’t seem to get this right. Too loose and I can’t get the derailer all the way to the big ring. To get to this point, I feel my derailer needs to be very tight at the starting point.

By: APKun

APKun — Wed, 22 Apr 2020 09:31:27 +0000

Limit screws stop the inward and outward travel of the front derailleur cage. Limit screws are marked “L” and “H.” The L-screw will stop the motion of the derailleur toward the smallest chainring. The H-screw will stop the motion of the derailleur toward the largest chainring.

By: Aformations.Com

Aformations.Com — Wed, 15 Apr 2020 01:11:04 +0000

Some front derailleur models do not have height or rotation adjustments. These models mount on a plate and both height and rotation settings are preset. Additionally, some bikes have a bracket commonly referred to as a “braze-on” for front derailleur mounting. This bracket will allow limited height and rotational settings.

By: John

John — Fri, 14 Jun 2019 12:21:25 +0000

Thanks for the article.
After struggling with front Derailleur Adjustment and consulting innumerable articles and Youtube videos I just about gave up until I discovered one additional factor in proper derailleur shifting, Crank Bolt Tension.
While inspecting my bike, I noticed a very slight “play” and a new “sound” during a ride. I realized that the crank was a little loose.
When I tightened the crank bolt, I realized it was way looser than the manufacturers torque specs. Once I tightened the crank bolt, it brought the outside chain ring a little closer in, enough to make a significant difference in the range of the derailleur.

Hope this helps.

By: mick

mick — Wed, 02 Aug 2017 08:06:04 +0000

Great article thanks
off to shed

By: Fin O'Suilleabhain

Fin O'Suilleabhain — Sun, 28 Dec 2014 19:56:15 +0000

I’m so unmechanical that this is beyond me but that is completely my fault, not yours. In fact this information is so brilliantly and thoughtfully set out that I just wanted to compliment you on it, after which I’m off down the bike shop. Rare in my experience to see something so helpful, clearly designed with user in mind at every step.