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5

Cogs and chains "wear together" (regardless of whether they are front rings or rear sprockets). The old chain does not slip on the ring, because the old chain's rollers are worn down. They have an overall smaller diameter than the rollers of a new chain, and also a different shape: new rollers are cylinders, but worn ones look like small pulleys, they have ...


2

Yes a new chain can skip in either an old chain ring or old cassette. The length between chain lengths needs to match. So the old chain matched up to the old ring. The new chain does not match up with the old chain ring. I suspect the middle chain ring looks worn. If so for sure time to replace it. What do I need to know to buy new chainrings for ...


5

I expect that after 10,000 km your chainring also needs to be replaced (frankly, I find it astonishing that you made it that far without replacing anything else. That's amazing.). Am I correct in guessing that you spend most of your time in your middle chainring? If so, it will be significantly more worn than your large or small rings, which would explain ...


1

Sounds like it could be the tension on the cable. If its the original then replace it. If its new then look at reindexing the gears? Have a look on Sheldon Brown for a much more comprehensive run down of what it might be. If all else fails it could be that its got rotated or slipped at some point. Just loosen the screw holding it to the frame and lift it up ...


1

There's little difference noticeable but the chainrings will make a big difference as some cheap ones will flex a surprising amount


-1

Cassettes are harder to measure. For example they adjust spacing for IG (Interactive Glide). Chain is something you can easily measure. And it is the cheapest and easiest component of the drive train to replace. A stretched chain will increase the wear on cassette and chain ring. Measure chain Replace chain when stretched For sure replace cassette ...


0

First, consider this; can you spin out the 50t? If not, there isn't anything to be gained by going to a larger chain-ring. At a cadence of 90rpm and a 50t x 11t will yield over 32mph & a speed of about 42.5mph could be attained with 120rpm. Even with 50t x 13t & 90rpm, the speed would be close to 28mph. If you make the switch, you may find the front ...


4

Should work fine, assuming the BCD on the 105 52t chain ring is also 130 mm (and not 110 mm - compact). The 105 chainring will be profiled ever so slightly thinner for the 10 speed chain, but will not affect 9 speed performance. Make sure to orient the new ring in the correct position with the small metal tab (that catches an errant chain) pointing toward ...



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