New Chainset, terrible noise! (Video Included)
Hi all.
Cannondale Synapse, it's 3 months old, and the FSA Velo chainset was terrible so I replaced it with a matching Sora one. Unfortunately, the noise worsened!
Shimano 4600 Hollowtech BB, Sora Chainset, Shimano HG93 chain. All brand new.
https://vid.me/k89C
In the video I move from middle rear, to smallest rear. The noise is heard in the first section, but becomes incredibly loud at the end.
The noise is coming from when the chain contacts the chainring teeth.
It happens most in the large front, small back, but is heard in all combinations.
I'm certain that's where the noise is coming from, I've had my ear to it and even move the front derailleur to confirm.
Old parts, noise is there.
New parts, noise is worse.
Is the frame bent, does the bottom bracket mount need facing, what's going on?
Please help, it's driving me crazy.
Thank you.
Cannondale Synapse, it's 3 months old, and the FSA Velo chainset was terrible so I replaced it with a matching Sora one. Unfortunately, the noise worsened!
Shimano 4600 Hollowtech BB, Sora Chainset, Shimano HG93 chain. All brand new.
https://vid.me/k89C
In the video I move from middle rear, to smallest rear. The noise is heard in the first section, but becomes incredibly loud at the end.
The noise is coming from when the chain contacts the chainring teeth.
It happens most in the large front, small back, but is heard in all combinations.
I'm certain that's where the noise is coming from, I've had my ear to it and even move the front derailleur to confirm.
Old parts, noise is there.
New parts, noise is worse.
Is the frame bent, does the bottom bracket mount need facing, what's going on?
Please help, it's driving me crazy.
Thank you.
0
Posts
Chain is fully oiled/lubed
Chainline. You might need more or less or no spacers behind the BB cups
Chain isn't rubbing on the FD cage
Damaged chain links
Stiff chain links
Chain pins protruding out further than they should be
Rear wheel is seated fully
Cassette lockring is tight
Too many or not enough spacers on the freehub
Hanger is tight on the frame
RD is tight on the hanger
Hanger not bent
Jockey wheel bolts are tight
RD isnt bent
Chainring bolts are tight
the sharp edges will soom wear off.
Parktools :?:SheldonBrown
All good there.
This is just a mystery to me.
Could it be because the bottom bracket is off by a few degrees and might need refacing?
Why not show it to someone experienced who can work it out then?
No money, no LBS, and I'd like to learn how to fix it myself.
Two closest "LBS" charge are terrible.
They both wanted to charge over £15 a day on labour, and £20 for a BB which cost £7 online (this was for a different bike).
No one else within reasonable distance.
It's exactly what it sounds like, but I can positively say it's not.
I've completely moved it out the way, the noise is 100% coming from the chain touching the teeth.
...and no cyclist friends?
Are you sure the noise isn't coming from badly indexed gears?
By the way, if you want to know if it's a bb problem take the chain off, then inspect how the chainset feels with no chain, I don't think it will be it at all though, although you might like to do it to know yourself.
The rate of the sound is chain noise of some kind (well, that's exactly what it sounds like), so I'd be looking very carefully for things that could be causing it. Sounds like front mech to me too by the way.
Also, is that chain the right length, it's not wacky long is it and fouling the jockey cage?
I've moved the Fd completely out the way, indexed 3 times, checked the chain length, moved the rear derailleur by hand (pushed, pulled, leaned).
I've pedalled backwards, removed and refit the cassette, lubed, cleaned, checked bb movement.
I have never come across this before.
I'm stumped.
It happens in both front chainrings, and is heard more when at the smallest and largest cassette rings.
This make it SEEM like a FD issue, but that's completely clear.
100% certain the noise is coming from where the chain touches the teeth.
Now, this is why I changed the entire setup to Sora from FSA Velo. Same noise.
Could this be because the bottom bracket isn't faced properly with the frame?
Could it be off angle slightly, causing excess twist on the extremes?
No , nothing to do with it.
Just take it to a shop.
Remove the chainset and bb cups and see if there is any excess paint around the edges of the bottom bracket. Then remove with sand paper.
Also check the cassette cogs are in the correct order and installed in the correct grooves.
And check the b-screw adjustment.
Might just be a poorly manufactured chain. Try a different branded chain.
Facing a BB is to remove paint and stuff, it won't re-align a chainset. IF your bb was aligned badly when the frame was built, enough to have a chainset on the p1ss enough to cause this then you'd see it.
As said above, take it to someone who knows. You said your shop charges £15 an hour? They might not even charge you for taking a quick look.
Ribble Gran Fondo, Campagnolo Centaur (winter bike)
Van Raam 'O' Pair
Land Rover (really nasty weather
All new, jockey's are fine. The noise is absolutely from the front.
One thing I have learnt and been continually surprised by is the fact that sounds often don't come from where you are 100000% sure they are coming from.
My guess here is that you've got something / doing something wrong, and no amount of guessing is going to put it right as you are obviously clueless (no offence meant).
Bite the bullet and take it to a mechanic (it wont cost that much!), or give up now!
Before u change gear the sound is barely audible, so as all parts are new & that it happens when FD remved, it has to be an alignment and/or chain length/fault issue, does the noise decrease as you move up into larger cogs at the rear.
Do the gears index perfectly at the rear? so eliminating a gear hanger problem.
Also is the noise the same when bike correct way up? chain tension is affected when upside down.
So if it were me, i d try another wheel and cassette and then a new chain, oh and you have checked to see if chain is directional? ie writing is on outside, i m sure it is on an hg93
Thanks for the reply.
Less noise in the middle rear cogs, more noise on the outter cogs.
Index perfectly in the rear.
Noise is the same both correct way up and upside down.
I've tried a different rear wheel and cassette.
Tried a new KMC 993 chain, FSA Velo chainset too.
Tried the chain both ways too.
This is what's worrying me: Two entirely brand drive chains have the same issue.
Yup, all good there.
Was this noise audible from the first day you received the bike ? or if not have you hit any particularly big potholes or had any big crashes ?
I'm worried you're right.
Is there any way to know for sure?
It was audible straight away, but I assumed it was just in need of minor service / indexing.
I rode it for a week or two doing minor adjustments.
yes my conclusion too, does the rear wheel sit squarely in the frame? you check wheel alignment using a long straight edge
when you are on big front /small rear i would expect to see the 2 RD pulley centres to be at 90' to the ground, is this the case? if not is the chain too short or long?
aside from this, assuming your not telling porkies and you ve done all you say, you need to take to a mechanic?
So, is the bike new? if so, its under warranty and even if bought online, you still have full sale of good rights, though if you do make a claim, put back all the original parts first and dont tell them you ve swopped anything over.
It's 3 months old. Cannondale Warranty uk won't touch it, and the shop have been arguing for 3 months over it.
I've asked for a refund, but they are making my life difficult, which is why I'm here.
name and shame on their fb page and on here, go to small claims court, costs £60, the threat is usually enough
if you paid with a CC you ve additional protection.
http://i.imgur.com/2kwduiO.jpg
And it helped with the noise.
What's going on?