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Thread: progressive springs

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    btbloke's Avatar
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    progressive springs

    Just a quickie, can anyone tell me do the tight coils go at the top or the bottom when you fit progressive springs,the instructions were missing from the set I recently bought and any text is in bosch.
    Also can you just undo the top nut and remove the standard springs and replace with the new progressive ones while the forks are still in the bike,do you have to replace the oil or can that wait for when I've got more time?
    Also does anyone still hear from wheeliebin at all?
    Last edited by btbloke; 18-02-10 at 08:06 PM.

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    Re: progressive springs

    no one know? come on it's been ten minutes already.........................

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    Re: progressive springs

    I don't think it matters which way up the springs go - just make sure that they are the same way round.

    Without getting up off the sofa and going upstairs to get my Haynes manual, I think that you just unscrew the fork top nuts and then just pull out the spring. I think.........
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    Re: progressive springs

    What Luton says. Also pretty sure oil level is measured with the springs in.

    These would be those springs that were on eBay, right? I would intersted to know if they make real difference.
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    Re: progressive springs

    I believe the open coils should go near the bottom in order to reduce the effective unsprung weight.
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    Re: progressive springs

    From memory the tighter coils go at the bottom, So as the weight transfers on to the springs they get stiffer the more load is put on them
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    Re: progressive springs

    Quote Originally Posted by btbloke View Post
    no one know? come on it's been ten minutes already.........................
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    Re: progressive springs

    Quote Originally Posted by Dee Duble Yuh View Post
    I believe the open coils should go near the bottom in order to reduce the effective unsprung weight.
    sounds about right to me, cheers all.

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    Re: progressive springs

    And do them one at a time if the weight of the bike in on the front wheel
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    Re: progressive springs

    Quote Originally Posted by Boris View Post
    And do them one at a time if the weight of the bike is on the front wheel
    Been there
    It's surprising how far the second fork cap can fly when it lets go of that final thread

    I've never fitted any progressive springs but pretty sure that the tight coil should be at the bottom, fork oil should be measured with the spring removed & fork compressed.

    If you haven't changed the fork oil, do it - you'll be horrified at the old stuff.....
    But for a quick spring change they can be done with the forks still in the bike.

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    Last edited by piguglyshandydrinker; 19-02-10 at 10:19 AM.

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