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New Rockhopper Chain Slipping Under Load

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New Rockhopper Chain Slipping Under Load

Old 06-12-19, 01:32 PM
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bballtwenty2
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New Rockhopper Chain Slipping Under Load

Hello All!

-Let me first start off by saying that i am a heavy guy, around 280lbs. I had a used smaller tire rockhopper that did the same thing, so i went and purchased a new 29" tire rockhopper and its still doing it.
-What my bike does is when i'm going up a hill or standing while peddling the chain seems to slip. It especially happens in 7th & 8th gear. I have taken it to the bike store and they cant seem to figure it out. I am starting to think that maybe i am just too heavy......
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Old 06-12-19, 01:47 PM
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I can't say for sure but at 280 your not too heavy. the bike might not be set up just right but I was riding a similar bike from specialized at 336lbs back few years ago and never had one issue with the drivetrain. It was a nice running ride. Don't remember the group set it had but it was an 8 speed triple and it was good. Sorry I am not much help but I really don't think your weight is the issue.
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Old 06-13-19, 07:36 PM
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Originally Posted by bballtwenty2 View Post
Hello All!

-Let me first start off by saying that i am a heavy guy, around 280lbs. I had a used smaller tire rockhopper that did the same thing, so i went and purchased a new 29" tire rockhopper and its still doing it.
-What my bike does is when i'm going up a hill or standing while peddling the chain seems to slip. It especially happens in 7th & 8th gear. I have taken it to the bike store and they cant seem to figure it out. I am starting to think that maybe i am just too heavy......
no way, I know plenty your weight and more, putting it down at local races every weekend
Can you better explain what you mean by slipping? I recently ran into this problem with a bike and it was really slipping due to a cracked hub
Could it be than the rear tire is slipping? When you stand you weight the front tires more and less in the back. Therefore not enough weight in the back.
Try seating climbs more (better for your back on longer climbs) or center your butt back a bit to weight the rear better. Let us know your progress. My buddy was 260 lbs about a year ago, after starting mtb he's down about 50 and what his weighed in HS. It's a great sport, weight is arbitrary
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Old 06-14-19, 02:54 PM
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Originally Posted by qclabrat View Post
no way, I know plenty your weight and more, putting it down at local races every weekend
Can you better explain what you mean by slipping? I recently ran into this problem with a bike and it was really slipping due to a cracked hub
Could it be than the rear tire is slipping? When you stand you weight the front tires more and less in the back. Therefore not enough weight in the back.
Try seating climbs more (better for your back on longer climbs) or center your butt back a bit to weight the rear better. Let us know your progress. My buddy was 260 lbs about a year ago, after starting mtb he's down about 50 and what his weighed in HS. It's a great sport, weight is arbitrary
Thanks for the response!
I would say it is like when I go to press the pedal the chain like misses a tooth.
My bike store said itís likely because Iím using the gears wrong. He said that since I am going up a hill I should be in 1-4th gear. Only use the 7th&8th on straight away or down hills..
They also put a new tire on for me just in case.
Again this is the second bike that is showing this symptom.
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Old 06-14-19, 02:56 PM
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Originally Posted by sdmc530 View Post
I can't say for sure but at 280 your not too heavy. the bike might not be set up just right but I was riding a similar bike from specialized at 336lbs back few years ago and never had one issue with the drivetrain. It was a nice running ride. Don't remember the group set it had but it was an 8 speed triple and it was good. Sorry I am not much help but I really don't think your weight is the issue.
Thanks for the positivity! I was feeling pretty discouraged and thinking maybe i should just return the bike..
i am going to keep working at it in hope of figuring out whatís wrong.
Its almost like I need a heavy duty cassette
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Old 06-14-19, 05:16 PM
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Is the cassette worn? Pics please. Shifting under load? Derralieur limits set?
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Old 06-14-19, 07:13 PM
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I think it needs a re-set up as well. this shouldn't be an issue really
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Old 06-14-19, 09:15 PM
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Originally Posted by Leebo View Post
Is the cassette worn? Pics please. Shifting under load? Derralieur limits set?
No the cassette isnít worn. It was worn on my first bike that I tried. I replaced it and still had the same issue.
Iíll try to get pics tomorrow.
Iím not shifting under load. It like skips a link or something under load like going up a hill when I stand up with some pressure on it.
Dont know about derralieur limits? Still sort of new to biking so please bear with me.
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Old 06-14-19, 09:15 PM
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Originally Posted by sdmc530 View Post
I think it needs a re-set up as well. this shouldn't be an issue really
I would think so too! Frustrating for sure.
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Old 06-16-19, 08:12 AM
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Originally Posted by bballtwenty2 View Post
No the cassette isn’t worn. It was worn on my first bike that I tried. I replaced it and still had the same issue.
I’ll try to get pics tomorrow.
I’m not shifting under load. It like skips a link or something under load like going up a hill when I stand up with some pressure on it.
Dont know about derralieur limits? Still sort of new to biking so please bear with me.
Lots of issues if the chain and cassette are worn and only one is replaced. Did you have a new cassette and a worn chain? A 235 lbs, I'm a masher, your weight is not the issue, get a different bike shop. have someone else ride it?
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Old 06-16-19, 11:04 AM
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Originally Posted by Leebo View Post
Lots of issues if the chain and cassette are worn and only one is replaced. Did you have a new cassette and a worn chain? A 235 lbs, I'm a masher, your weight is not the issue, get a different bike shop. have someone else ride it?
Brand new bike.
My bike shop is good and concerned about figuring it out.
I just rode it and kept it in 4th gear while going up a hill and it did fine. Maybe itís me. Normally I keep it in 7th or 8th up a hill while standing and thatís when the slippage occurs.
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