New chain, how much tension?
Learning to do all this via YouTube etc.
just got a new kmc quicklink chain and i know I can measure against my old chain to see how many links I need to remove, but I was wondering how to tell if the chain length is correct by tension.
Running a 53/39 front and a 12/28 rear
just got a new kmc quicklink chain and i know I can measure against my old chain to see how many links I need to remove, but I was wondering how to tell if the chain length is correct by tension.
Running a 53/39 front and a 12/28 rear
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Comments
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Put the chain on the big ring at the front and the smallest sprocket at the back (53/12) the jockey wheels should be aligned vertically"It never gets easier, you just go faster"0
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That should be fine.0
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What's it like on big-big?0
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That isn't a useable gear, if you are going to cross chain then you need a longer chain. If you can be disciplined, you might get away with it (although it does run the risk that you will shift down and get into a chainline that could lead to damage.) The derailleur has a capacity of 33 teeth, so you should be fine if you have the right number of chain links, but only just.
You maybe could reattach 1-2 links from your removed chain (if you kept the end) using spare quicklinks from the chain brand. you end up with two quicklinks near to each other, but that won't be a serious problems. If you add more links I suspect you would have problems in little, little.0 -
Cheers. Will try and get another quicklink tomorrow and add 3 links I think. Though it would be good to train myself out of any cross chain habits, wouldn't fancy screwing up half way up a hill.
I shall also go look at small/small though I can't remember last time I did that cross chain. Guilty of big/big though.0 -
You still have some flex in the chain as it goes through the mech, and the upper pulley isn't hitting the sprocket, so I'd say you could get away with it like that. One more link for peace of mind, two more to make it look nice.
http://www.parktool.com/blog/repair-hel ... gth-sizing
Compare with the pics in the Park Tool article0 -
I've used KMC 10 speed links with Shimano chains for years. No experience with SRAM links and KMC chains. Try it and let us know if it works...0
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A bit hard to judge from the 3rd photo but how much slack is there running small/small. Is it usable if you went into it by mistake... it looks like it would be ok?“You may think that; I couldn’t possibly comment!”
Wilier Cento Uno SR/Wilier Mortirolo/Specialized Roubaix Comp/Kona Hei Hei/Calibre Bossnut0 -
That looks fine to me although I don't think you were too short in the first set of photos. Park tools says that as long as there is some kind of obvious "S" bend in the chain between the jockey wheels it's OK. Look at the photos here
http://www.parktool.com/blog/repair-hel ... gth-sizing
Some people say you should size a chain using small-small through RD with no slack as that will give you the longest chain possible for your setup. Others say that big-big not through RD with one full link extra is optimal. I don't particularly like the Shimano method myself.0 -
Dabber, it was running through fine so should be ok if I made an error.
Bob the first time around I was 2 from the top and the chain wouldn't move any more hence the need for extra links (3rd photo from the start of the thread)
Cheers for all the advice everyone0 -
Looks too long now.
The method I use is to wrap the chain round the big chainring and biggest sprocket without threading it through the rear derailleur - the two ends should overlap by two links (3 rivets).
I find this less subjective than the Shimano method with the vertical jockey wheels.0
going to cause any problems?
