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  1. #1
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    A few Questions about a single speed conversion

    Hi all ,

    I am trying to convert a ten speed peugeot racer into a single speed (freewheel) bike. First time trying something like this .The bike has horizontal dropouts so I think I don't need a chain tensioner .

    I'm trying to do it cheaply . I have a few questions and I was hoping someone more experienced could help .

    1 . The rear wheel takes a screw on freewheel . Can I just take of the 5 speed block and get a single speed freewheel and put it on there and then adjust for a good chainline by moving the front chainring inwards/outwards using some kind of spacers on the chainring bolts ? Or will I have to get someone to respace and dish the rear wheel ?

    2 . Can I keep the current crankset and just remove the chainring that I wont be using or does single speed require its on specific type of chainrings/teeth ?

    3 . Will I need a new chain ? the chain I have on is a relatively new sram pc870 chain for 5,6,7,8 speed .

    4 . The downtube shifters seem to screw into the frame and not clamp on like other bikes I have seen . When I take them off will there be two holes in the frame and what would people usually do to make them look neater ?

    Thanks for reading and for any advice ,

    J

  2. #2
    Senior Member seau grateau's Avatar
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    1- Yes, you should be able to pull off the old freewheel and screw on a single, assuming it isn't seized on there for some reason. You don't need to space and dish the wheel. Using one or the other side of the crank spider should get your chainline close enough. It doesn't need to be perfect. To remove the old freewheel you will need a tool that I'm assuming you don't have. A shop will probably do it for you for a couple bucks.

    2- Yes, you can use the cranks that are on there, assuming nothing is wrong with them. You will need to get singlespeed chainring bolts though if you're removing a ring.

    3- You don't need a new chain. If you have a chain breaker, you can just remove links to shorten the one you have. If you don't have one, a shop will probably do it for you for a few bucks.

    4- You're probably going to see a couple ugly metal pegs if you take the shift levers off. You could cover them with something like this, or you could just leave the shift levers on there and forget about it.
    Quote Originally Posted by adriano View Post
    thanckx.
    Quote Originally Posted by Nagrom_ View Post
    "I made love to your mother dozens of times last week, and she doesnt know what a worn chain ring looks like"

  3. #3
    Senior Member
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    Yes, you can thread on a single speed freewheel. Check your chainline after you do this, you may get lucky and not have to redish, etc. I've done a couple conversions where I didn't have to do anything to adjust the chainline. Even if it's a few mm off, you'd still be fine.

    Yes, you can use your current crankset and take off the other chainring.

    If you get a 3/32 freewheel you can use your PC870, just shorten it. I've used PC830's a few times.

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