Slip / Grind when stressed under power
mjw123
Posts: 61
I was attacking a Strava climb tonight in a high gear so putting a lot of power through the chain and pedals when i heard a loud noise that happened a couple of times. It reminded me of a gear that was'nt quite in properly but it was as had been using it for the previous 60secs. It unnerved me a little a cost me a couple of secs as i came off the power.
Is this likely to be the chain slipping or possibly the bottom bracket on its way out ? - any way to test ?
Ribble carbon bike is about 3years old and probably done about 4000miles and all parts still from new (shimano 105)
tia,
Mike.
Is this likely to be the chain slipping or possibly the bottom bracket on its way out ? - any way to test ?
Ribble carbon bike is about 3years old and probably done about 4000miles and all parts still from new (shimano 105)
tia,
Mike.
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Comments
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Just how much (estimated) power were you putting out?I'm sorry you don't believe in miracles0
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mjw123 wrote:I was attacking a Strava climb tonight in a high gear so putting a lot of power through the chain and pedals when i heard a loud noise that happened a couple of times. It reminded me of a gear that was'nt quite in properly but it was as had been using it for the previous 60secs. It unnerved me a little a cost me a couple of secs as i came off the power.
Is this likely to be the chain slipping or possibly the bottom bracket on its way out ? - any way to test ?
Ribble carbon bike is about 3years old and probably done about 4000miles and all parts still from new (shimano 105)
tia,
Mike.
4000 miles is a lot for a chain!
Sounds like the chain is worn & has worn the cassette as well.0 -
or there is a problem with your freehub pawls.0
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[url=http://www.bikeradar.com/forums/viewtopic.php?p=19643020#p19643020]SloppySchleckonds[/url] wrote:Just how much (estimated) power were you putting out?
About 350W at the time it started getting noisy.0 -
mjw123 wrote:I was attacking a Strava climb tonight in a high gear so putting a lot of power through the chain and pedals when i heard a loud noise that happened a couple of times. It reminded me of a gear that was'nt quite in properly but it was as had been using it for the previous 60secs. It unnerved me a little a cost me a couple of secs as i came off the power.
Is this likely to be the chain slipping or possibly the bottom bracket on its way out ? - any way to test ?
Ribble carbon bike is about 3years old and probably done about 4000miles and all parts still from new (shimano 105)
tia,
Mike.
4000 miles is a lot for a chain!
Sounds like the chain is worn & has worn the cassette as well.
I measured it today and the .75 didnt pass through. Not sure how accurate those chain wear tools are though...
Probably as well to change the chain to be safe.0 -
After three years and thousands of miles best to change both, then you can just get on and ride without giving it a second thought.0
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I measured it today and the .75 didnt pass through. Not sure how accurate those chain wear tools are though...
Probably as well to change the chain to be safe.
Did you rest the chain checker on the links? If so, give it a push down & if it falls between the links its definitely the chain. Like I say, 4000 miles is a lot for a chain. The usual advice is to change it every 1500-2000 miles.
If you do change it be prepared to have to change the cassette as well. Could get away with it but if the chain has worn badly then chances are the cassette will have as well.0 -
Thanks - any reason to get any other chain over the 105 that's presently on ?
Might try this one ?
http://www.chainreactioncycles.com/shimano-ultegra-6701-10-speed-chain/rp-prod55029?gs=1&gclid=CjwKEAjwzuisBRClgJnI4_a96zwSJACAEZKel9PiAw87znoxVN1q1uE6vOAcKLUUSgsMTOUGqqEMxRoCw1vw_wcB&gclsrc=aw.ds#0 -
Cycling today:
A rider knows how many miles he/she has done; knows what wattage he/she was putting out; owns a chain-wear measure; puts data onto Strava and attacks KOM sections...
... and goes online to ask why a chain is slipping.
If this thread is not a spoof, it is making quite a good pinch hitter until a spoof thread comes along.
Note to all parents: Get your children on bicycles. Get them fixing tyres and adjusting brakes and lubing cables. You too can ensure that an adult never again has all the equipment and less of a notion of mechanical awareness than might be appropriate. There is an American phrase for this, mentioning gear and idea, but I do not recall it in full.0 -
Cycling today:
A rider knows how many miles he/she has done; knows what wattage he/she was putting out; owns a chain-wear measure; puts data onto Strava and attacks KOM sections...
... and goes online to ask why a chain is slipping.
If this thread is not a spoof, it is making quite a good pinch hitter until a spoof thread comes along.
Note to all parents: Get your children on bicycles. Get them fixing tyres and adjusting brakes and lubing cables. You too can ensure that an adult never again has all the equipment and less of a notion of mechanical awareness than might be appropriate. There is an American phrase for this, mentioning gear and idea, but I do not recall it in full.
You should post more
I'm sorry you don't believe in miracles0 -
Is the chain checker not going through because the chain is so worn that instead of falling between links it is butting up against the next link? Replaced a chain like that on a friends bike at the weekend and had to replace cassette and chain rings as it was all fubar.0
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thats the point of so many not having a clue about even basic bike maintenance today... it is a generational thing.. ... children today of course have bikes but they dont have to rely on them like "back in the day"... and gone are the days when the bike sheds in schools were rammed full by 8 30 in the mornings.
So 'modern man/mamil' is likely to be unaware that if you leave your bike uncared for for any length of time it is likely to bite back with a face plant on the stem if your chain snaps.
Seriously, the amount of threads where the question arises why does my bike rattle... if they actually took 30 seconds to take the flippin' wheel off and shake it, they might get an answer a bit quicker than waiting 6 weeks on a forum... but hey thats the modern way.. does twitter make it faster?0 -
OK OK not everyone who rides a bike is obsessed with its workings. Thanks to those who kept my ignorant question sanctimony free for a short time
New chain ordered so issue should be resolved thanks.0 -
Have a close look at the cassette and front chanrings, as the new chain can slip on these if worn too.0
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If the chain is as worn as I think it may be the cassette will definitely need changing and the chainrings probably.Have a close look at the cassette and front chanrings, as the new chain can slip on these if worn too.0 -
Likely.
I sympathise with the OP.
I can strip my bike down to the frame and rebuild but there was a time when I made many similar mistakes on the road to enlightenment. One of those errors was putting a new chain on a knackered chainring.
Slip slip slip... got the train to work that day.0 -
Very much so, some things you have to learn the hard way.Likely.
I sympathise with the OP.
I can strip my bike down to the frame and rebuild but there was a time when I made many similar mistakes on the road to enlightenment. One of those errors was putting a new chain on a knackered chainring.
Slip slip slip... got the train to work that day.0 -
OK OK not everyone who rides a bike is obsessed with its workings. Thanks to those who kept my ignorant question sanctimony free for a short time
New chain ordered so issue should be resolved thanks.
probably not, might need a new cassette as well.
Then you will need a chain splitting tool, a cassette removal tool and chain whip and a few youtube videos to watch!www.conjunctivitis.com - a site for sore eyes0 -
I'm still waiting to hear what the difference is between a strava climb and a normal climb.0
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I'm still waiting to hear what the difference is between a strava climb and a normal climb.
The rage and anger in a Strava climb 0 -
OK OK not everyone who rides a bike is obsessed with its workings. Thanks to those who kept my ignorant question sanctimony free for a short time
New chain ordered so issue should be resolved thanks.
My post may have come across as slightly acid and perhaps a tad patronising. If so, that is just a reflection of my acerbic character and I apologise, up to a point.
Like you, I am not obsessed with the workings of a bicycle. I still go to the bike shop for some things and have never tried to build a wheel... but it was the aching dichotomy between the knowledge of wattage (until recently the preserve of the race rider) and a seemingly complete absence of awareness of maintenance and upkeep that made your original post so representative of cycling today.
There was a time (and this may be a good or a bad thing) when every ten-year-old scally was happy repairing tyres and lubing chains - and by twelve most kids were replacing brakes, sorting cables and setting up five-speed (honest!) systems. Yet none (not a one) would have known the first thing about ratios or wattage and the like.
I was not poking fun at anyone... just marvelling at the extraordinary way that cycling has (to an extent) become a form of competitive consumerism and retail therapy, blended with a new-era knowledge of optimum training patterns and so on.
Once, it was just a bike that you looked after and riding for the blast. No-one is right or wrong here, but your OP was a sign of the change.0 -
My memories of cycling when I was a youth (in the 70s) mostly feature flat tyres and rusting chains. Some things never change. And there was a kid with a speedo on his Chopper...0
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I'm still waiting to hear what the difference is between a strava climb and a normal climb.
More strain on the bike as work flat out for a top 10.0 -
OK OK not everyone who rides a bike is obsessed with its workings. Thanks to those who kept my ignorant question sanctimony free for a short time
New chain ordered so issue should be resolved thanks.
My post may have come across as slightly acid and perhaps a tad patronising. If so, that is just a reflection of my acerbic character and I apologise, up to a point.
Like you, I am not obsessed with the workings of a bicycle. I still go to the bike shop for some things and have never tried to build a wheel... but it was the aching dichotomy between the knowledge of wattage (until recently the preserve of the race rider) and a seemingly complete absence of awareness of maintenance and upkeep that made your original post so representative of cycling today.
There was a time (and this may be a good or a bad thing) when every ten-year-old scally was happy repairing tyres and lubing chains - and by twelve most kids were replacing brakes, sorting cables and setting up five-speed (honest!) systems. Yet none (not a one) would have known the first thing about ratios or wattage and the like.
I was not poking fun at anyone... just marvelling at the extraordinary way that cycling has (to an extent) become a form of competitive consumerism and retail therapy, blended with a new-era knowledge of optimum training patterns and so on.
Once, it was just a bike that you looked after and riding for the blast. No-one is right or wrong here, but your OP was a sign of the change.
I'm a late 70's / 80's kid and dont recall many people looking after their bikes. Was something dad or the bike shop sorted...
I doubt 90% of the cycling population would know what the interval is for chain replacement as 95% of motorists wouldn't know when a cambelt should be changed. Forums are full of enthusiasts who represent a small minority, most of which are very helpful giving advice to the ignorant majority when we ask
Thanks again all0 -
A strava climb is longer and harder than it actually is.I'm still waiting to hear what the difference is between a strava climb and a normal climb.0 -
OK OK not everyone who rides a bike is obsessed with its workings. Thanks to those who kept my ignorant question sanctimony free for a short time
New chain ordered so issue should be resolved thanks.
probably not, might need a new cassette as well.
Then you will need a chain splitting tool, a cassette removal tool and chain whip and a few youtube videos to watch!
I suspect after 4000 miles of Strava-fuelled stomping up hills you may well be correct! Few things worse than fitting a new chain only to find it skips like a girl on the worn cassette
When I was last chain shopping I found the 10 speed 105 chain to be the best buy. And the 10 speed Tiagra cassette would be good enough in an otherwise 105 equipped setup (but remember it doesn't need the 10 speed spacer that 105 / Ultegra would)0 -
I'm a late 70's / 80's kid and dont recall many people looking after their bikes. Was something dad or the bike shop sorted...
I doubt 90% of the cycling population would know what the interval is for chain replacement as 95% of motorists wouldn't know when a cambelt should be changed. Forums are full of enthusiasts who represent a small minority, most of which are very helpful giving advice to the ignorant majority when we ask
exactly Im of a similar vintage & I rode my bike then everywhere, in all weathers, through all kinds of dirt & mud, rain, all the time & I never once cleaned the chain, had to replace the chain,had the chain or any cable break,I dont even remember getting a puncture, I might have vaguely checked tyre pressures occasionally, but unless my parents were secretly fixing it every night once I was in bed. it was a bike I just got on it and rode it and it worked.
maybe 70's/80s bikes were just built better as thesedays I seem to spend half the time worrying if the latest odd noise or creak means something is about to fall off or break. my chain started slipping when stressed under power and was making those not ideal noises,and I took it to my LBS for a service,but they couldnt find anything wrong, though its stopped being as bad, so they must have looked at it in the right way to fix it, they certainly didnt clean it up 0 -
I think it may be the freehub body pawls if chain isn't .75 worn on the checker?
Swap the cassete over off the current rear onto a spare rear wheel then you will find out.
Shimano have a £60 wheelset worth getting as a spare set if you don't have one.
shimano r 501maybe 70's/80s bikes were just built better
I think 5 speed bikes are more durable than 11 speed as the wider gauge sprockets and chains don't wear as fast, indexing alot easier also.0 -
This, 5 speed chains are a lot thicker. What indexing? Mine were just friction shifters.maybe 70's/80s bikes were just built better
I think 5 speed bikes are more durable than 11 speed as the wider gauge sprockets and chains don't wear as fast, indexing alot easier also.0 -
Ah, well, you see the posh ones had indexing. Which you could switch to friction shifting when it inevitably didn't index properly. I seem to remember that the non-functioning indexing persisted up to 7 speed.
This, 5 speed chains are a lot thicker. What indexing? Mine were just friction shifters.maybe 70's/80s bikes were just built better
I think 5 speed bikes are more durable than 11 speed as the wider gauge sprockets and chains don't wear as fast, indexing alot easier also.
Sturmey archer gears were indexed as well.0
