February 17, 20215 yr Can you please help my Haibike Trekking 4 has now covered 1800 miles I am now having some problems gear changing and also chain jumping when using the 2 smallest cogs on the cassette . I suspect a new chain and cassette are needed my problem is do I change them on a like for like basis or change manufacturer and is it possible to change ratios I never use the largest gear on the cassette. Currently fitted is a Shimano hg500 11-42 teeth 10 speed cassette.
February 17, 20215 yr Hi, 1800 seems quite low miles, so I would try adjusting cable tension first using the adjusters at the derailleur and/or gear change lever. Cable stretch could be the cause of your issue rather than a worn chain/cassette.
February 17, 20215 yr You can change your cassette ratios, here is the same cassette: https://www.sjscycles.co.uk/cassettes/1125-shimano-cshg500-10-speed-cassette/ If you change your cassette to a smaller high gear you will need to remove some links from your chain.
February 17, 20215 yr I suggest you buy a chain wear checking tool or use a ruler to measure wear on the chain, and replace the chain no later than .75% elongation, that way you'll get more life out of the cassette and chainrings. At that mileage there's a good chance the chain is worn out. Your gearchange problems are most likely down to cable adjustment though, as spitz said.
February 17, 20215 yr I covered 1000 miles on mine when the chain started jumping in the 11t cog. I was advised to get a new chain and cassette. For the sake of £4 from AliExpress i bought a new Shimano 11t cog and rverything was good again. Although I know I’ll have to replace the chain (and probably the cassette) soon. I guess that you use 11t & 13t cogs more than any others? As those two can be replaced individually on a 10 speed cassette.
February 17, 20215 yr Hi, 1800 seems quite low miles, so I would try adjusting cable tension first using the adjusters at the derailleur and/or gear change lever. Cable stretch could be the cause of your issue rather than a worn chain/cassette. 1800 seems a lot with the bike putting out 70nm, I change my chains between 1000 and 1500 miles especially as it is not very expensive.
February 19, 20215 yr Author Many thanks to all for your constructive answers new chain and cassette on order
February 21, 20215 yr A cassette should outlast at least 3 and more like 4 or 5 chains. The combined weight of me and my bike has been around 140 kg and I'm about to fit my 4th standard chain at the 4900 miles mark. 1800 for a chain is reasonable if your a bit lighter. Make a note of the mileage you change the chain at and look to put a new one on when you reach that milestone again. I also had a problem with my chain skipping on the 11 cog when the bike had only done a few hundred miles. I let the limit adjustment screw out a quarter turn and used a dab of thread lock. It hasn't done it again. Darren
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