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Questions and answers about sports

Rear derailleur doesn’t go to smallest cog

5 min read

Asked by: Emily Reynolds

If the derailleur will not shift into the smallest cog, check the cable tension and remove tension if necessary using the process outlined below. Once cable tension has been removed, try shifting again into the smallest cog. Notice if the top pulley in the derailleur is directly under the smallest cog.

How do you shift to smallest cog?


Quote from video: I can pedal this around. And if I just manually push the Kait cage. Over like that and now it went down to the smallest cog if the limiting screw was set too tight.

What gear is the smallest cog?

Low Gear

Low Gear = Easy = Good for Climbing: The “low” gear on your bike is the smallest chain ring in the front and the largest cog on your cassette (rear gears).

Why won’t my rear derailleur shift up?

Often sluggish and reluctant shifts are due to debris buildup between the shift housing and the shift cable, kinks in the cable and/or housing, or worn out housing. As above, make sure your derailleur, hanger, and cassette are tight, and your wheel is properly seated and tight.

What does the low limit screw on a rear derailleur prevent?

The L-limit stops the derailleur from moving inward (toward the spokes). The limit screw does not make the derailleur move, pulling the inner wire makes the derailleur move. The L-screw allows the pulley wheels to shift the chain to the innermost sprocket and yet not shift off the sprocket into the spokes.

How do I know if my rear derailleur is bent?

Quote from video: When we're trying to shift. Down becomes quite erratic or vice-versa. The key is to look at the rear derailleur we can see it's bent slightly inward.

What is the B screw on a derailleur for?

Simply put, the B-Tension screw is there to control the gap between guide pulley (the upper pulley on the derailleur) and the bottom of the cogs.

Is 1 the easiest gear on a bike?

Gear ‘1’ on a bike is a low gear: this is the same for gears in a car. This gear is best for climbing, riding over difficult terrain, and riding slowly. This gear may also be referred to as the ‘easy’ gear.

What is a granny gear on a bike?

The granny gear is the smallest cog on the front crankset of your bike. If you haven’t already become best friends with it, you may need to start!

What gear on a bike is for hills?

If you are climbing a hill on a bicycle, using a lower gear is better than a higher one. A smaller gear can help you accelerate faster without requiring too much effort in each pedal stroke.

Why are my bike gears so hard to change?

Cable tension and limit setting



The most obvious and common causes for poor shifting are down to poor adjustment and the most common thing to go out of adjustment is cable tension. Indexed drivetrains rely on correct cable tension so that the shifters pull the derailleur to the intended spot.

How do you adjust the limit on a B screw?

Quote from video: Help out the little fellow by first pulling the derailleur body back make the adjustments that you want and then put the derailleur back in its normal. Position.

What causes gears not to shift?

Over time, dirt, debris and other tiny particles can accumulate in the transmission fluid, affecting its fluid properties. This can cause the vehicle to die when you shift into drive or reverse, allow a loss of power, transmission slip, rough shifts or even prevent the vehicle from shifting into gear at all.

Can you ride with a bent derailleur hanger?

Can I ride with a bent derailleur hanger? You can certainly ride your bike with a bent hanger, but shifting will be suboptimal and there is a risk of further damage to the bike. At the very least, you will have drivetrain noise in some gears, or your chain will skip in certain gears or shift more than one gear at once.

How do you fix a misaligned derailleur?

Quote from video: You can use an allen key you need an allen key anyway for the other techniques that we're going to show you one of which is using an adjustable spanner.

How much does it cost to fix a bent derailleur?

There can be a range of prices for replacement derailleurs, starting around $20 and going all the way up to $700.

Which way do limit screws turn?

Turning the screw clockwise, moves the derailleur limit to the left, turning it counter clockwise, moves it to the right. In the end, the sprocket and the upper pulley should be aligned perfectly.

Why won’t my front derailleur shift down?

Common Front Derailleur Problems. Front derailleurs may cause sluggish or inaccurate shifting because (A) the derailleur body is not positioned properly, (B) the derailleur limit screws are not adjusted correctly, (C) the mechanism is dirty or (D) the cable is damaged or improperly tensioned.

How do you fix a chain rub?

Quote from video: First shift to the small cog. Turn the outer limiting screw counterclockwise. That is outward pull about 1/4 of a turn. And try shifting again that is taking care of the.

How do you fix a Shimano shifter?

Quote from video: So we can usually hit it with wd-40. Break it down let it dry up a little bit and then squirt some maybe some lithium grease back inside. There.