Questions tagged [drivetrain-slipping]

Questions about chains slipping off the gears, or the chain derailing, or the bike shifting at odd times, perhaps while standing to pedal uphill.

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votes
3answers
174 views

Chain slipping on 10 speed Deore XT with new cassette, new chain and new chainrings

The bike is about 10 years old with an average 30KM per week on it so roughly 15,000KM It is a 3 * 10 speed Deore XT and it has performed great up until recently when my chain broke (bought a Park ...
3
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5answers
450 views

Roadside / Temporary fix for skipping chain

Recently I was out riding when my chain began to skip in the big ring due to heavily worn components. The situation worsened surprisingly quickly such that within a few miles I couldn't practically ...
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1answer
75 views

Chain seems to slip under pressure?

While I was riding I went to stand and it felt like the chain busted or came off! I jumped off and turned the pedals by hand and they turned fine but any pressure at all and it slips... any ideas ? I ...
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1answer
72 views

Trek7200: new bracket,crank,chain,&shift cables. Deraillers set Trek manual. Good stand results, but stumbles riding up incline

Trek 7200 Bike: new bracket, crank, chain, & shift cables. Derailleurs set to Trek manual. Good stand results, but bike stumbles riding up incline on middle of 8 gears.
5
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3answers
561 views

Chain is slipping relative to large chainring but not the small one

The crank on my 2016 Giant XTC Advanced (Shimano XT components) is slipping relative to the large chainring but not the small chainring. In searching for reasons many of the answers focus on chain ...
4
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2answers
400 views

Chain slipping on brand new bike, bike shop is stumped

I just bought a 2020 Kona Lava Dome (the details of this bike/components are at the end of this question) and I can't use the low (small) front sprocket. Under any load (like a hill climb) the chain ...
0
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1answer
366 views

Chain crunching after degrease and lubrication

I did the usual degrease and lubrication on my mountain bike today but when I tried to ride the bike later on I heard pretty bad crunching sounds. The sound is definitely coming from somewhere around ...
4
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1answer
192 views

Need new crankset for a 15+ year old bike [chain slipping on gears]

Just discovered this site. My uncle gave me his old bike. The chain has been slipping and today we replaced the chain (previous was worn and stretched, the rear casette (to a used but less-worn one), ...
1
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2answers
230 views

Chain loses grip under load in higher gears

When pedalling in higher gears, the crank or cassette seem to completely lose grip for a second, then grip then lose it again. I could probably pedal all day in 1st and any front ring but when start ...
1
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0answers
87 views

Why are is my 7 speed chain drive slipping? in the lower gears

I've noticed when I ride in 1st or 2nd gear that the chain drive slips then engages then slips again.Especially when going up ridiculously low grade inclines, such as ramps at crosswalks. What is ...
3
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1answer
668 views

Chain slipping between frame and gears

I have a bike that I use for getting from place to place. The only problem is, the chain periodically slips off the gears and gets stuck between the frame and the rear wheel gears. Almost like my bike ...
1
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2answers
612 views

Is a folding bike's chain more likely to slip?

I have recently purchased a Raleigh folding bike second hand. I had to take it back for servicing (within warranty) when there were problems with the gears and derailleur. The dealers have replaced ...
4
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1answer
253 views

Feeling of click/slip when pedalling

This is very hard to explain, but I will try my best. I recently got a Shimano Ultegra cassette, crankset, front and back derailleurs, chain, and cables installed on my Giant TCX SLR1 2015 bike. ...
2
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3answers
2k views

Skipping on new chain, new cassette, new derailleur

For a long time I have been having issues with chain skipping on my 1999 Trek 6500. I took a video to illustrate exactly what I mean by "skipping": Over the last ...
5
votes
1answer
5k views

Downtube shifters won't stay in low gear on rear derailleur

I've finished a bike restoration today and it's my first time using downtube shifters. They work and will span the full range of gears but won't stay in the big cog on the back for long, the shifter ...
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1answer
1k views

Shimano Nexus 7 gear hub slips

I need help on adjusting my Nexus 7 Shimano rear hub. Today I tried to install a Shimano 7 gear shifter to change the gears on a Nexus 7 Shimano rear hub. Before installing, I lined up the red lines ...
7
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3answers
3k views

(Apparent) chain slippage causes on new bike - usual culprits already eliminated

I recently purchased a new bike (~7 weeks ago). Since day one, it has had an issue with chain slippage. I initially took it back to the bike shop from which I bought it, to be told that it was likely ...
3
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3answers
142 views

My chain slips despite new parts and tuneup

I use my bike for commuting, and so my knowledge of bikes is enough to make to work and back. I have a trek 4500 mb. I purchased it used, and from the very first day I have had this issue where the ...
3
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2answers
5k views

Fixed Gear crank arm slips

The crank arm on my fixed gear "slips" when I put large pressure on the pedals like when I take that first pedal to get the bike moving or pulling up hard on my toe straps to slow down. The slip is ...
0
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2answers
356 views

My chain slips when I use an inappropriate gear, and the chain loosens when changing gears (most of the time). What should I do?

As the title says, it seems like my chain slips way too often. This happens if I pedal hard, go uphill, or ride at an inappropriate gear (even when not pedaling hard). Besides that, it seems like my ...
2
votes
2answers
1k views

Chain slips/jumps occasionally (with all new parts)

Several months ago I replaced all gearing parts and switched from an 8 speed to a 10 speed system. All parts were brand new. After replacing I noticed the chain slipping occasionally. Though I drive ...
0
votes
1answer
472 views

Why does my drivtrain skip under hard torque?

I recently purchased a new bike, a Specialized hardtail mountain model. It is on the cheaper side, but with the brand I expected a good ride. Less than a month of riding it, the drivtrain has ...
4
votes
3answers
304 views

Drivetrain wear -- questions on chain elongation and skipping

Pitch (i.e. the distance between two links/two cogs) is a major issue in drivetrain wear, which explains why waiting too long to replace a chain may lead to premature cassette replacement. This being ...
2
votes
1answer
262 views

When starting to pedal, it takes half a rotation to "catch"

While power pedaling on my mountain bike, when I coast for a second, it takes a half a circle on my crank to catch. Can anyone tell me the problem?
4
votes
2answers
3k views

Chain skipping mid cassette after a clean

I have cleaned my chain and gears with rubbing alcohol and towels. Afterwards, I applied some chain lube on the chain. Now, when under a lot of torque, the chain skips and slips mid-cassette. Low ...
2
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2answers
2k views

I cleaned my cassette and changed my chain, now my freehub is slipping. What are the possible causes? [duplicate]

I removed my cassette, cleaned it and put a new chain on my mountain bike. All seemed to go well and went back together nicely. However when I took it out for a ride the free hub seems to be slipping ...
2
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2answers
406 views

Rear derailleur needs a couple pedalstrokes to change gear

As of late I'm having some trouble with my rear derailleur. When I shift specific gears (most likely to happen to the middle gears), the rear derailleur feels like it doesn't have enough power and ...
2
votes
1answer
7k views

Chain slips to lower gear when pedaling backwards

I have a hybrid 18 speed bicycle which is able to shift through all gears on both the front and rear sets of gears. When on the largest gear on the front set (by the pedals) the chain will try to ...
1
vote
2answers
874 views

Chain Slip at front changing from large to small front chain wheel (with large cog at back)

I have a Pinnacle Neon 3 Hybrid, Shimano Sora 9 speed cassette and 2 chainrings at the front. The bike is 2 weeks old and I've cycled around 65 miles so far. Chain ring has come off 3 times at the ...
1
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2answers
25k views

Chain slipping in cassette when under load, could a different type of cassette work better?

This is my second modern bike and I got the same problem each time. The chain slips when under load (usually when I'm standing, but I can slip starting at a light and still sitting too). At first I ...
4
votes
5answers
23k views

Shimano 105 rear shifting issues

I'm disappointed with my new Cannondale and it's 105 group, I expected this to be a major upgrade from my previous trouble free bike with the bottom end group set. It's done about 500 miles, had new ...
10
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3answers
7k views

Chain slipping on middle chainring

I have recently replaced the chain and the cassette. Previous chain never slipped. I never had any problems with it at all. But I have made about 10 000 km on it and the wear was beyound any limits, ...
2
votes
3answers
980 views

Chain skipping with new chain and freewheel

I've recently (last 6 months) begun riding again after many years away and have begun updating components on my bike (a mid 80s era Fuji). After replacing the rear wheel and freewheel I developed a ...
4
votes
4answers
3k views

Chain skipping on new freewheel and chain setup - What went wrong?

BACKGROUND NOTE: The bike is a 1992 Univega MTB that originally came with 6-speed SIS with a triple chainring. I removed the SIS shifter when it broke, and went with a friction shifter. The bike is ...
1
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3answers
872 views

Pedaling causes rear wheel/pedals to slip

When I start to pedal, say up hill or have to move quickly, my pedals slip and I can't get any movement except for a really bad slip. When I'm on a flat straightaway and have to pedal I hear an awful ...
0
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0answers
41 views

Problems shifting under load [duplicate]

I've spent hours with my bike on the stand. On the stand: it performs great. When I ride, I can cause the rear gears to shift just by changing how hard I pedal (the harder i pedal, the higher up on ...
2
votes
2answers
505 views

Chain Slippage on MTB

I've got a 2009 Fuji Tahoe Comp 29er MTB with upgraded SRAM x.7 components and I'm having a couple issues. It is currently set up as a 1x9 and on gears 2-4 and sometimes 5 I'm having severe slippage ...
6
votes
3answers
2k views

Different Gear Type when there's no Front Derailleur?

I have a 7 speed Jamis Boss Cruiser, 7 gears in back and one up front. I've been using it fine for several months now. Lately, the chain is coming off of the single front gear, usually after stopping ...
5
votes
2answers
25k views

Fixed gear: slipping

I have a single speed bike with a flip-flop hub and recently I decided to try out the fixed side. When testing it out in the car-park I was applying backpressure to brake and found sometimes the ...
5
votes
4answers
4k views

Why is my chain riding up and skipping teeth on the freewheel?

Due to a number of reasons, I would like to keep my freewheel at all costs (It's a Sachs freewheel, the bike has all sorts of more 'vintage' components, and they're hard to come by). From reading all ...
15
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6answers
101k views

Why does my gear slip when going uphill / standing?

I have a road bike that I use to commute ~6 miles to work every day. Some of the portions of the ride are at a steep incline, and I've noticed that when I get up to stand on some of these hills, my ...
5
votes
4answers
21k views

Adivce on what to do next with crunching / slipping gears

About two weeks ago I took my bike to the local bike shop to get serviced. It was previously slipping gears under load and at the end I couldn't use the lowest gear going up hill it would just slip ...
13
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12answers
96k views

While pedaling standing up, bike crank gives in as if shifting, what is causing this?

While standing up and pedaling, the cranks give in as if shifting. It seams like I am shifting down, but my hands are off the shifter, almost like the chain is skipping a link. I took it to a bike ...
9
votes
9answers
60k views

Chain slipping on newish bike

I've looked at most of the answers for related questions and they all speak about replacing parts that are old. I just bought a new bike from a friend who rode the bike for about a month before ...
2
votes
3answers
29k views

How to fix problem with mountain bike chain falling off gears?

The chain on my girlfriend's bike came off the front gear today, it looks like the back gear changing mechanism isn't handling back-pedaling properly, whenever she pedals backwards the chain slacks ...
36
votes
5answers
12k views

Perfectly setting up gears - how?

Every time I have my bike serviced, the bike shop sets up the gears on a stand in their workshop. The gears change perfectly on the stand, but when the bike is on the road, the rear derailleur doesn't ...