Advertisement
If you have a new account but are having problems posting or verifying your account, please email us on hello@boards.ie for help. Thanks :)
Hello all! Please ensure that you are posting a new thread or question in the appropriate forum. The Feedback forum is overwhelmed with questions that are having to be moved elsewhere. If you need help to verify your account contact hello@boards.ie
Hi there,
There is an issue with role permissions that is being worked on at the moment.
If you are having trouble with access or permissions on regional forums please post here to get access: https://www.boards.ie/discussion/2058365403/you-do-not-have-permission-for-that#latest

Trek 1000 8 speed sprocket and chain

  • 14-10-2015 4:53pm
    #1
    virminhunter
    Registered Users, Registered Users 2 Posts: 348 ✭✭


    Hi all, I bought a new bike for a bit of training the other day, I'm a complete novice so the technical side of things is fairly daunting at the moment, I brought it to a fella for a tune, I got it back today and straight away the new chain was slipping when I put pressure on it, I rang him and explained and he said the sprocket and the old chain wore together so when the new chain went on it it started slipping, so now I need a new sprocket aswell, he told me the cheapest he could get one for was €50 put I'm looking at shimano hg50 8 speed sprockets on ebay for 18 sterling.

    Can anyone tell me exactly what I need, sprocket and chain wise? Do chains come in different sizes to suit different sprockets.

    The bike is a Trek 1000, 8 speed, 2006.


Comments

  • #2
    cython
    Registered Users, Registered Users 2 Posts: 4,792 ✭✭✭cython


    virminhunter wrote: »
    Hi all, I bought a new bike for a bit of training the other day, I'm a complete novice so the technical side of things is fairly daunting at the moment, I brought it to a fella for a tune, I got it back today and straight away the new chain was slipping when I put pressure on it, I rang him and explained and he said the sprocket and the old chain wore together so when the new chain went on it it started slipping, so now I need a new sprocket aswell, he told me the cheapest he could get one for was €50 put I'm looking at shimano hg50 8 speed sprockets on ebay for 18 sterling.

    Can anyone tell me exactly what I need, sprocket and chain wise? Do chains come in different sizes to suit different sprockets.

    The bike is a Trek 1000, 8 speed, 2006.

    Chains are typically "sized" for the number of gears in the cassette (what you're calling the sprocket, as it's actually a group of sprockets). You'll likely have gotten an 8 speed chain already, and it will have been cut to size for the cassette installed. If you've very little mileage on the new chain, you just need a new cassette, likely either SRAM or Shimano (as they both have the same interface to fit onto the wheel. As it happens I have a Trek 1000 also (might be slightly newer, so may differ, but was defo 8 speed before I got pissed off of thumb shifters :D), and I'm 99% sure it came with a 12-26 cassette on the rear, and it was actually a SRAM, i.e. this one in 12-26. CRC also have a bundle with a chain meaning you get the chain for about a fiver, which might be worthwhile if you ever had an intention of changing the chain yourself in future (should get multiple chains per cassette if changed in time).

    Be warned though, you'll need a cassette tool and a chain whip to change the cassette, and a chain breaker to size the new chain (down the line), which could set you back upwards of another 30 quid in tools.


  • #3
    virminhunter
    Registered Users, Registered Users 2 Posts: 348 ✭✭virminhunter


    Excellent cython, thanks:)


  • #4
    virminhunter
    Registered Users, Registered Users 2 Posts: 348 ✭✭virminhunter


    Is this what you mean by "cassette tool"?
    http://www.chainreactioncycles.com/ie/en/shimano-cassette-c-lock-lockring-tool/rp-prod23751


  • #5
    cython
    Registered Users, Registered Users 2 Posts: 4,792 ✭✭✭cython


    That's one example, but a pretty expensive one considering you then need a spanner or driver for leverage. This is a cheaper alternative: http://www.chainreactioncycles.com/ie/en/cyclo-pro-series-cassette-lockring-remover/rp-prod7975 I think the one you linked is more expensive as it does centre lock rotors too, which you don't need for your bike. Now obviously you get what you pay for in tools, but for the home mechanic plenty of these cheaper options are fine. A shop doing this multiple times per day might need more durable ones.

    This would be a cheaper option than the original with the handle built in: http://www.chainreactioncycles.com/ie/en/x-tools-pro-cassette-remover/rp-prod55936


Advertisement