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Thread: Dissapointment

  1. #1
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    Dissapointment

    i got my bike today off ebay and it had an 8 speed shifter on it so i was like great conversion by gusset cool cheap effective right? well no, the hub is a 6 speed?!??!! help me guys....other options? like just a cog and spacers will that fit...thx

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    Quote Originally Posted by machinehead131
    i got my bike today off ebay and it had an 8 speed shifter on it so i was like great conversion by gusset cool cheap effective right? well no, the hub is a 6 speed?!??!! help me guys....other options? like just a cog and spacers will that fit...thx
    Threaded freewheel or cassette? Either way, you have options.

    FW: Thread on a BMX freewheel and your done assuming you have a tensioner and good chainline.

    Cassette: Use PVC pipe or off the shelf spacers. You can acheive very good chainline this way.

    So either way, it seems you are not sunk. Am I missing something?

    Mike
    Tuff Schist

  3. #3
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    yes thanks but can i buy a new cog deticated for single speed use for the 6 speed cassette or do i have to use the ramped geared one...?

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    the cassete or whatever loooks like this so...looks like i need that tool and i can get a bmx gear?



  5. #5
    Nouveau Retrogrouch SuperModerator
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    OOPS! That is a thread-on freewheel. Not a cassette.
    mtbtires.com
    The trouble with common sense is it is no longer common

  6. #6
    Nouveau Retrogrouch SuperModerator
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    If it is a Shimano hub the same "SS" cogs fit. 6,7,8 speed, all the same.
    mtbtires.com
    The trouble with common sense is it is no longer common

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    now that we have established it is a thread on .. lol

    what are some options....links would be great and a list of everything i need...should i buy new wheels or will bmx parts do the trick thx

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    Quote Originally Posted by machinehead131
    now that we have established it is a thread on .. lol

    what are some options....links would be great and a list of everything i need...should i buy new wheels or will bmx parts do the trick thx
    Shimano, ACS Claw, and ENO (spendy) come to mind. Check the FAQ for links, as I don't have them in the gray-matter.

    IF it were a cassette body, DX cogs are not ramped, and are a cheap way to experiment till you find the gear of Zen.

    With the threaded variety, slather that mo-fo with grease on the threads. They get real tight like.

    Mike
    Last edited by Meat Foot; 06-09-2005 at 08:31 PM. Reason: spelling
    Tuff Schist

  9. #9
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    I converted an old Shimano Dura-ace thread-on freewheel hub last year with a White Ind. ENO freewheel. Here is the hub with the original 6-speed freewheel removed:
    <img src="https://gallery.mtbr.com/data/mtbr/516/2342591stP_durace_SS_disc_bolt-spoke.jpg">
    I respaced the axle (shifted) to make the wheel dishless and move the drive-side threads out to a better chainline.
    <img src="https://gallery.mtbr.com/data/mtbr/516/2342591stP_durace_SS_disc_on-bike.jpg">
    Here it is with the ENO freewheel on - been running fine for a year.

    Cheers,

    Tom

  10. #10
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    Whoa!

    Where did that disc brake adaptor come from!

  11. #11
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    Quote Originally Posted by bikecop
    Where did that disc brake adaptor come from!
    Prolly First Principles...

    http://www.coveproductions.com/cools..._adaptors.html

    baker

  12. #12
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    Quote Originally Posted by bikecop
    Where did that disc brake adaptor come from!
    First Principles - as baker said. A little over priced, but hey, I had one lying around.

    Here's the complete thread about building that wheel - http://forums.mtbr.com/showthread.php?t=80543

    In any case, threaded freewheel hubs make good SS wheels if you don't mind re-spacing the axle.

    Cheers,

    Tom

  13. #13
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    how do u re-space the axle....i know u just screw on the freewheel then how to get a good chainline?



    also can u i just get the freewheel and not the tool until i need to take it off because it will tighten itself or do i have to be able to take it off to re-space the axle..thx
    Last edited by machinehead131; 06-10-2005 at 01:06 PM.

  14. #14
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    Quote Originally Posted by machinehead131
    how do u re-space the axle....i know u just screw on the freewheel then how to get a good chainline?

    also can u i just get the freewheel and not the tool until i need to take it off because it will tighten itself or do i have to be able to take it off to re-space the axle..thx
    Best to get a knowledgable shop or mechanic to re-space the axle if you've never taken then apart... but then where would the fun be - and how would you learn???

    Shimano axles are threaded (usually 10mm threaded axle on the rear), and the cones (bearing race) are threaded on and are held in place by a lock nut, with spacers to make sure the width of the axle fits into your frame. Losening the locknuts and/or moving the spacer (which can be washers) and/or adding/subtracting different spacer allows you to re-space the axle.

    A 6-speed freewheel is much wider than a BMX freewheel used for SS'ing, so if you just exchange them, the BMX cog can be too far inboard to line up well with the front chainring. You can try it first, and if it works, so much the better. If not, you need to shift the axle so the cog is furthur out-board - this also means you must re-dish the wheel so the rim stays in the centre of the rear dropout - not the easiest thing to do if you have not built or trued a wheel. If you know someone that is good at that, just ask them to help you.

    You can re-space the axle with the freewheel on.

    Cheers,

    Tom

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