Roadie Drivetrain Help
I’ve just built up a Planet X SL Pro Carbon jobbie as my new road bike. I’ve built quite a few mountain and road bikes over the years but never had this problem. It has a FSA Gossamer MegaExo compact crankset, 10 speed ultrega chain, 10 speed Ultegra Rear and front mech. I’ve adjusted the limit screws, b screw etc so that it should pedal nice and smoothly, but when I’m in the big ring front and little on the back there seems to be a cruching coming from the chainset or chain. I can’t see that it’s rubbing on the front mech, it seems to be where the chain is loading onto the chainset?
Sorry for the long post!
CheersPosted 9 years ago
I’d check the alignment of everything again, and that the chainline is spot on.
Is is a continuous noise for the full revolution of the chainset? If so, you’ve probably put something on incorrectly. If it’s only a particular point of the revolution, then it’s the chainring / spider is misaligned or bent.
Also might be worth checking you’ve put the correct spacing on the rear hub, as it may be dragging on the inside of the dropout if you haven’t.
Oh, and Snaps, of course you can, but as a road rider as well, I’m happy to help on something like this, as clearly others are. Could you not respond on a grumpykid forum?Posted 9 years ago
why would you be likely to get a better answer on a road bike forum than here? Being as I ride and race road bikes, and I know plenty on here do as well, I would imagine we’ve come across 99% of issues with them.
But if you want to niche yourself to purely a mountain biker, that’s your business I guess.Posted 9 years ago
roach – I wasn’t aware of that.Posted 9 years ago
This subject came up after the hack & it was generally agreed that this forum was MTB only & that the occasional roadie question in the chat forum was not a problem, also I’m sure you’d get better answers to your questions from roadies rather than MTBer who might occasionally ride a road bike.
I wouldn’t dream of asking a Road racing motorcycle question on a Motocross forum.
I wasn’t aware of any general agreement. That may have been concluded by certain members in a particular thread, and perhaps even with a suggestion from stw towers that it is predominantly a mountain bike site, but ultimately it’s discretionary.
ultimately on a motorcross / road motorbike forum side of things you’re likely to have a wider proliferation of technology and solutions. Realistically, it’s only the frames and wheels that differ to any extent between road and mountain bikes, gearing etc is vastly the same.
Oh, and I don’t “occasionally” ride a road bike – 70-80% of my riding is road riding.Posted 9 years agoKINGTUTMember
From the forum rules;
What topics are suitable for discussion?
We have two discussion forums and classified ad forum.
Topics on the Bike forum should be restricted to discussion about bikes. A non exhaustive list of allowed topics include, bikes, components, rides, biking holidays, travel, mags…. Without stating the bleeding obvious we will assume you get the idea..
It says bikes, it makes no mention of specific types.
Now stop ya whinging.Posted 9 years agoJonEdwardsMember
Forgot to say it only happens in the bottom cogs and the large ring??
Thta’ll be your problem then. Cross chaining the drive train will knacker it reet quick. The chain will be hitting the big ring teeth at a funny angle and then clicking slightly as they seat onto it.
A new (non-sloppy, still laterally stiff) chain will exacerbate the problem, and maybe the chainstays on your new bike are a little shorter than the old one, so the angle is a fraction more acute.Posted 9 years ago
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