Has this ever happened to you - chain bounce
DonDaddyD
Posts: 12,689
I was riding up Wimbledon Hill, cars passing me on my right. I change the big ring (front mech) to the middle ring and as the shifting happens the bottom of the chain crosses over the top part of the chain. This immediately stopped my crank and I was unable to pedal.
Has this happened to you? Any advice (other than the sarcastic MTFU, pedal harder and don't down shit) to avoid or resolve this issue?
I felt myself falling into oncoming traffic so had to steer into the curb and was prepared to take the fall. Luckily I stayed upright.
Has this happened to you? Any advice (other than the sarcastic MTFU, pedal harder and don't down shit) to avoid or resolve this issue?
I felt myself falling into oncoming traffic so had to steer into the curb and was prepared to take the fall. Luckily I stayed upright.
Food Chain number = 4
A true scalp is not only overtaking someone but leaving them stopped at a set of lights. As you, who have clearly beaten the lights, pummels nothing but the open air ahead. ~ 'DondaddyD'. Player of the Unspoken Game
A true scalp is not only overtaking someone but leaving them stopped at a set of lights. As you, who have clearly beaten the lights, pummels nothing but the open air ahead. ~ 'DondaddyD'. Player of the Unspoken Game
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Sounds very similar to chain suck (which I got in the terrible mud of the Puffer) where the chain carries on around the chain ring and jams into the chain at the top. Heavy (heavy) oiling solved that but your cause is probably different. Is it a derailer (must be I guess) - is it tensioning the chain properly?ROAD < Scott Foil HMX Di2, Volagi Liscio Di2, Jamis Renegade Elite Di2, Cube Reaction Race > ROUGH0
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Probably in need of a new chain and chain ring/s by the sounds of things.Food Chain number = 4
A true scalp is not only overtaking someone but leaving them stopped at a set of lights. As you, who have clearly beaten the lights, pummels nothing but the open air ahead. ~ 'DondaddyD'. Player of the Unspoken Game0 -
I'm not sure if it's the same thing but I used to find that my SRAM Rival double would mis-shift on the down shift.
The chain would 'stick' to the underside of the inner ring immediately after shifting off the larger ring, i.e. it would have changer from big to small properly but then stick. It would then get dragged up with the chainring, somehow missing the chainstay, and then jam against the chain coming onto the upper side of the small chainring. This would lead to the whole drivetrain locking up and could be pretty scary when putting power down.
As I say I'm not sure it's the same thing but wasn't the typical chainsuck I've had on MTBs. I never found a solution as I couldn't find the actual cause as the chainring teeth were all ok (it also happened with a Force chainset I put on). The only way I solved it was to use Shimano on my new bike and ditch the SRAM!0 -
DonDaddyD wrote:Probably in need of a new chain and chain ring/s by the sounds of things.
A really good clean and lube might solve itROAD < Scott Foil HMX Di2, Volagi Liscio Di2, Jamis Renegade Elite Di2, Cube Reaction Race > ROUGH0 -
i managed to wrap my chain 4 times around my crank arm the other week. took me 15mins to unwind it at the side of the roadBMC TM01 - FCN 0
Look 695 (Geared) - FCN 1
Bowman Palace:R - FCN 1
Cannondale CAAD 9 - FCN 2
Premier (CX) - FCN 6
Premier (fixed/SS) - FCN30 -
You have a middle ring, OMG. As said good clean, chain, rings, mech first. Inspect rings. If fails new rings.0
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For fear of things getting silly. Yes, I ride a triple. My big ring is a 54t or 52t proper massive. The SCR 3 came as a triple, there was no double/compact option. I would love a double (compact actually).Food Chain number = 4
A true scalp is not only overtaking someone but leaving them stopped at a set of lights. As you, who have clearly beaten the lights, pummels nothing but the open air ahead. ~ 'DondaddyD'. Player of the Unspoken Game0 -
Clean the chain with GT85 or WD40 and a wire brush, dry it off then oil it. Check none of the links are seized - if they are then wiggle them about and free them up (but if they're seized then I'd just replace it). Also make sure the chainrings are clean.
If it happens again after this then buy a new chain - cheapest thing to replace and most likely cause.0 -
You don't ride Wimbledon Hill in the Big Ring?
MTFU.- 2023 Vielo V+1
- 2022 Canyon Aeroad CFR
- 2020 Canyon Ultimate CF SLX
- Strava
- On the Strand
- Crown Stables
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A compact is a triple in all but name.
Get some muc-off chain cleaner, stick the bike in the bath and wash it all properly. Check you've not bent any chainrings with the power awesome™. Try running a drier lube in future if cleaning fixes the problem.What do you mean you think 64cm is a big frame?0 -
+3 chainsuck
it happens on mine from time to time, reverse pedal an it dropKeeping it classy since '830 -
Compact....
Seriously also check the rear mech cage springs and that the mech pivots aren't stiff, as if the mech isn't pulling enough on the chain, you'll get chain suck changing down as its not taking up slack. Get that WD into the pivots and clean it.0 -
cyclingprop wrote:A compact is a triple in all but name.
And the fact it's not got three rings, perhaps?0 -
Calls for MucOff, WD40 and GT85...? I wouldn't let any of that crap near my bikes. Used MucOff degreaser once and it took some paint off the bike. Get a proper degreaser - Fenwicks, Motorex etc (fenwicks foaming chain cleaner & sponge works wonders), and then lube with something decent. Again Fenwicks MTB is great for the winter and their Road for the summer.
- 2023 Vielo V+1
- 2022 Canyon Aeroad CFR
- 2020 Canyon Ultimate CF SLX
- Strava
- On the Strand
- Crown Stables
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Happens. Clean and lube will help. When it happens though just pedal backwards half a rev to sort it out and carry on.
Heh. Triple. In London.0 -
Thanks all.
Can I point out that since I upgraded from the Truativ crankset that came with the bike to the current one - this was WAY back in 2009 - I have only needed to replace the big ring. This is because I very rarely use the smallest and middle rings on the crankset.Food Chain number = 4
A true scalp is not only overtaking someone but leaving them stopped at a set of lights. As you, who have clearly beaten the lights, pummels nothing but the open air ahead. ~ 'DondaddyD'. Player of the Unspoken Game0 -
Sure.... you just happened to be using the small and middle rings when you had the problemDonDaddyD wrote:Thanks all.
Can I point out that since I upgraded from the Truativ crankset that came with the bike to the current one - this was WAY back in 2009 - I have only needed to replace the big ring. This is because I very rarely use the smallest and middle rings on the crankset.
If the rings are that old then they're probably worn, hence the chainsuck. Clean it all up, but it might not go away.0 -
DonDaddyD wrote:My big ring is a 54t or 52t proper massive.
It has to be when the smallest cog you've got on the back is an 18. Bless. 0 -
Il Principe wrote:Calls for MucOff, WD40 and GT85...? I wouldn't let any of that crap near my bikes. Used MucOff degreaser once and it took some paint off the bike. Get a proper degreaser - Fenwicks, Motorex etc (fenwicks foaming chain cleaner & sponge works wonders), and then lube with something decent. Again Fenwicks MTB is great for the winter and their Road for the summer.
Must be that power you have in your scrubbing and polishing arm IP.What do you mean you think 64cm is a big frame?0 -
I agree with all of the above about chain suck. Especially the bit about cleaning the rear mech too so it keeps the tension in the chain when you come off the big ring.
Also, you are backing of whilst it changes down aren't you? Make life much easier for the front shifter if it isn't fighting tension in the chain.0 -
cyclingprop wrote:A compact is a triple in all but name.
With a compact you can nearly get the range of a triple, without the hassle of trying to get a triple to work (had one once, hated it).
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another thing to try with chainsuck, for Aluminium chainrings - get a stanley knife and go round the outer edges of the chain ring to trim off the burr that collects on the edge of the tooth, I have been told that this helps but I've not tried it myself...."I get paid to make other people suffer on my wheel, how good is that"
--Jens Voight0
