Shimano 105 Chainset Help
Discussion
I have a 2014 Trek Domane 4.3. Spec sheets say this has Shimano groupset with a 105 front end and a Tiagra cassette.
The bike has done 7k miles and is still on the original driveline bar a cassette swap about 2k ago. I'm looking at swapping a few other bits now.
The derailleurs are labelled up as 105 5700. However the chainset has no markings other than "50F" on the outer edge of the chainring. The crank has R565 stamped on it.
I've done a fair amount of googling on this now and am looking for some validation of my conclusions.
It appears that I can fit a 105 5700 chainring, is that correct?
Can I replace the 50 with a 53 without making any other changes? I'm thinking of upping the gearing a touch as the 34T lower chainring is like new as I spend so little time on it and there are odd occasions where I rev out in top gear. However, I do like the wide range of gearing on the bike for bigger hilly rides.
Can I use any 105 chain?
Thanks
The bike has done 7k miles and is still on the original driveline bar a cassette swap about 2k ago. I'm looking at swapping a few other bits now.
The derailleurs are labelled up as 105 5700. However the chainset has no markings other than "50F" on the outer edge of the chainring. The crank has R565 stamped on it.
I've done a fair amount of googling on this now and am looking for some validation of my conclusions.
It appears that I can fit a 105 5700 chainring, is that correct?
Can I replace the 50 with a 53 without making any other changes? I'm thinking of upping the gearing a touch as the 34T lower chainring is like new as I spend so little time on it and there are odd occasions where I rev out in top gear. However, I do like the wide range of gearing on the bike for bigger hilly rides.
Can I use any 105 chain?
Thanks
47p2 said:
The R565 is has a 110mm BCD and the 53T chainring has a 130mm BCD so no you can't simply change to a bigger ring, you can only change to another 50T chainring or get hold of a 105-5700 53T-39 chainset. Yes a 105 chain will work fine
Thanks. So a 105 50T like this https://www.evanscycles.com/shimano-105-5750-10-sp... is what I'm after?
Actually, you could change to a 52t chainring in the same BCD (110). But you can't use that with a 34 inner, you'd need a 36 - there's a limit to the difference in size that the front mech can accommodate.
Any 5 bolt shimano compatible chainring (so fsa etc) will fit, so long as it has the correct BCD
Be careful what you wish for. You may well rue the loss of the 34 chainring rather more than the occasional spinning out moment - if you're spinning out 50/11, you're either VERY fast, or you need to learn to turn the legs faster.. (usually a compact comes with something like a 25-28 as the largest and 11 as the smallest).
Any 5 bolt shimano compatible chainring (so fsa etc) will fit, so long as it has the correct BCD
Be careful what you wish for. You may well rue the loss of the 34 chainring rather more than the occasional spinning out moment - if you're spinning out 50/11, you're either VERY fast, or you need to learn to turn the legs faster.. (usually a compact comes with something like a 25-28 as the largest and 11 as the smallest).
upsidedownmark said:
Actually, you could change to a 52t chainring in the same BCD (110). But you can't use that with a 34 inner, you'd need a 36 - there's a limit to the difference in size that the front mech can accommodate.
Any 5 bolt shimano compatible chainring (so fsa etc) will fit, so long as it has the correct BCD
Be careful what you wish for. You may well rue the loss of the 34 chainring rather more than the occasional spinning out moment - if you're spinning out 50/11, you're either VERY fast, or you need to learn to turn the legs faster.. (usually a compact comes with something like a 25-28 as the largest and 11 as the smallest).
Shhh! Whisper it, but in... https://roadcyclinguk.com/gear/evolution-chainset-...Any 5 bolt shimano compatible chainring (so fsa etc) will fit, so long as it has the correct BCD
Be careful what you wish for. You may well rue the loss of the 34 chainring rather more than the occasional spinning out moment - if you're spinning out 50/11, you're either VERY fast, or you need to learn to turn the legs faster.. (usually a compact comes with something like a 25-28 as the largest and 11 as the smallest).
Road Cycling UK said:
Pro perspective:
As for the pros, Lars Teutenberg, technical adviser to Orica-GreenEDGE, came up with an interesting slice of inside information.
“Our riders usually use 53-39t, but on really steep hills they’ve used 53-36t or even 52-34t. Although this isn’t standard practice for Shimano combinations as front mechs usually don’t work well when there’s a spread of 16 teeth or more, we’ve made them work just fine,” says Teutenberg. That’ll be the magic touch of pro mechanics, then. Teutenberg adds this is often complemented by an 11-25t cassette at the back, or an 11-28t cassette for a hilly day in the saddle.
You're welcome! As for the pros, Lars Teutenberg, technical adviser to Orica-GreenEDGE, came up with an interesting slice of inside information.
“Our riders usually use 53-39t, but on really steep hills they’ve used 53-36t or even 52-34t. Although this isn’t standard practice for Shimano combinations as front mechs usually don’t work well when there’s a spread of 16 teeth or more, we’ve made them work just fine,” says Teutenberg. That’ll be the magic touch of pro mechanics, then. Teutenberg adds this is often complemented by an 11-25t cassette at the back, or an 11-28t cassette for a hilly day in the saddle.
Oh, and I'm with upsidedownmark when he says be careful what you wish for.
'Spinning out' 50 x 11t ?? Worst case you end up slightly frustrated at missing out on that Strava KOM. Running out of gears at the other end of the spectrum might mean an embarrassing walk to a summit, and is unlikely to be kind to your knees. Pay attention to which gears you regularly use for a while. If you find yourself regularly availing yourself of the 34t ring, especially in combination with the fat end of your cassette,then I'd say you 'need' the 34t ring more than you'll benefit from a couple of extra teeth on the front end.
Having said that, I can't see any mention of which cassette you currently have fitted. It may be possible (if, for example,you currently have a 25t cassette fitted) to get a wider range cassette fitted, move up to a 52/36 chainset at the front and gain a bigger 'top' gear without losing too much (if anything) from the 'hilly' end of your gear range.
ETA:
There's a few useful, relevant posts here... http://weightweenies.starbike.com/forum/viewtopic.... ...from folk with direct experience of exceeding Shimano's 16 tooth maximum recommended gearing spread. Anecdotally, at least, it seems that a 52/34t hybrid chainset can be made to work OK.
Edited by yellowjack on Wednesday 6th July 10:03
You may well need a chainring bolt spanner too:
http://www.chainreactioncycles.com/shimano-peg-spa...
Not expensive, so worth getting at the same time.
http://www.chainreactioncycles.com/shimano-peg-spa...
Not expensive, so worth getting at the same time.
yellowjack said:
You're welcome!
Oh, and I'm with upsidedownmark when he says be careful what you wish for.
'Spinning out' 50 x 11t ?? Worst case you end up slightly frustrated at missing out on that Strava KOM. Running out of gears at the other end of the spectrum might mean an embarrassing walk to a summit, and is unlikely to be kind to your knees. Pay attention to which gears you regularly use for a while. If you find yourself regularly availing yourself of the 34t ring, especially in combination with the fat end of your cassette,then I'd say you 'need' the 34t ring more than you'll benefit from a couple of extra teeth on the front end.
Having said that, I can't see any mention of which cassette you currently have fitted. It may be possible (if, for example,you currently have a 25t cassette fitted) to get a wider range cassette fitted, move up to a 52/36 chainset at the front and gain a bigger 'top' gear without losing too much (if anything) from the 'hilly' end of your gear range.
ETA:
There's a few useful, relevant posts here... http://weightweenies.starbike.com/forum/viewtopic.... ...from folk with direct experience of exceeding Shimano's 16 tooth maximum recommended gearing spread. Anecdotally, at least, it seems that a 52/34t hybrid chainset can be made to work OK.
I have a 12-30 cassette. The Domane is more about endurance than outright pace.Oh, and I'm with upsidedownmark when he says be careful what you wish for.
'Spinning out' 50 x 11t ?? Worst case you end up slightly frustrated at missing out on that Strava KOM. Running out of gears at the other end of the spectrum might mean an embarrassing walk to a summit, and is unlikely to be kind to your knees. Pay attention to which gears you regularly use for a while. If you find yourself regularly availing yourself of the 34t ring, especially in combination with the fat end of your cassette,then I'd say you 'need' the 34t ring more than you'll benefit from a couple of extra teeth on the front end.
Having said that, I can't see any mention of which cassette you currently have fitted. It may be possible (if, for example,you currently have a 25t cassette fitted) to get a wider range cassette fitted, move up to a 52/36 chainset at the front and gain a bigger 'top' gear without losing too much (if anything) from the 'hilly' end of your gear range.
ETA:
There's a few useful, relevant posts here... http://weightweenies.starbike.com/forum/viewtopic.... ...from folk with direct experience of exceeding Shimano's 16 tooth maximum recommended gearing spread. Anecdotally, at least, it seems that a 52/34t hybrid chainset can be made to work OK.
Edited by yellowjack on Wednesday 6th July 10:03
I live, and do the bulk of my riding, in the flatlands. The bike spends 98% of its time on the bigger chainring and the vast majority in gears 15-19.
I am a poor climber due to a/ weight and b/ inexperience and so when I do get in to the hillier regions, I do value that 34t ring and I am not ashamed to admit that the 30t rear has seen some action on places such as Kirkstone pass.
The need to change the front chainring is due to wear. I had a spreadsheet on which I was looking at gear ratios and pondering doing the two things at once. Based on what I've read I'm going to swap the 50t like for like. I'll look into putting an 11-25 or similar cassette on there for the flatlands and perhaps swap the 12-30 for hilly rides.
IMHO, that's a wise choice. for about 20 quid (wiggle) you can get a 5700 (105) cassette that is 28-11 - if you don't mind the jumps, that'll give you more top end.
I didn't think 10sp tiagra came in a 30; 11-32 or 12-28 I thought.. I may be wrong! In either case, two cassettes is a nice solution - personally I dislike the jumps on really wide range cassettes, but that's just me.
I didn't think 10sp tiagra came in a 30; 11-32 or 12-28 I thought.. I may be wrong! In either case, two cassettes is a nice solution - personally I dislike the jumps on really wide range cassettes, but that's just me.
upsidedownmark said:
IMHO, that's a wise choice. for about 20 quid (wiggle) you can get a 5700 (105) cassette that is 28-11 - if you don't mind the jumps, that'll give you more top end.
I didn't think 10sp tiagra came in a 30; 11-32 or 12-28 I thought.. I may be wrong! In either case, two cassettes is a nice solution - personally I dislike the jumps on really wide range cassettes, but that's just me.
12-30 standard fit on the Domanes. There are some big jumps in there which compromise smooth progress at times but no chance I'd get up some hills on anything less.I didn't think 10sp tiagra came in a 30; 11-32 or 12-28 I thought.. I may be wrong! In either case, two cassettes is a nice solution - personally I dislike the jumps on really wide range cassettes, but that's just me.
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