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Thread: Shimming rear axle?

  1. #1
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    Shimming rear axle?

    I was wondering if it is good practice to shim the freeplay on a rear axle? My V Strom has 1-2 mm play and this just gets taken up by tightening the ends of the swingarm together. Is it good practice to avoid stressing the aluminium if poss or am I being a bit anarl about it? Just asking now cos I am going to replace some bearings in the cush drive and that is the opportunity. And so if it is 2 mm i should put a shim both sides in theory to keep things central.
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    Quote Originally Posted by Laava View Post
    I was wondering if it is good practice to shim the freeplay on a rear axle? My V Strom has 1-2 mm play and this just gets taken up by tightening the ends of the swingarm together. Is it good practice to avoid stressing the aluminium if poss or am I being a bit anarl about it? Just asking now cos I am going to replace some bearings in the cush drive and that is the opportunity. And so if it is 2 mm i should put a shim both sides in theory to keep things central.
    You're being a narl.

    Just make sure you've got the right spacers in the right places and proceed as usual. Most bikes have a bit of clearance, guess it's preferable to have any manufacturing tollerances that way rather than t'other, and a couple of mm over the length of the swingarm isn't going to stress the arms worth worring about.
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    Only thing it may be is if someone cranked the nut tight and squashed the crush tube between the bearings.
    Idd do 2 bearings ( maybe 40-50) and a crush tube if your worried about it.

    Your call but its not good to have bearings under pressure if it is that.
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    Quote Originally Posted by mossy1200 View Post
    Only thing it may be is if someone cranked the nut tight and squashed the crush tube between the bearings.
    Idd do 2 bearings ( maybe 40-50) and a crush tube if your worried about it.

    Your call but its not good to have bearings under pressure if it is that.
    Had that on the last XB12, but they're an alloy tube.

    But it only takes 0.025mm to fuck bearings, I doubt it'd last more than a couple of revs at 2mm.

    Reminds me though, make steel tubes to go in next time the new one gets fresh rubber.
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    Cool, thanks guys!
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    If you do the sums on how much deflection (degrees) that is over the length of the swing arm you'll have a number to tell you how little deflection that 2mm really is.
    But if you want to shim it then go ahead. Either way it'll be fine
    "I don't like it, and I'm sorry I ever had anything to do with it." -- Erwin Schrodinger talking about quantum mechanics.

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    Funnily enough, using a Tourque wrench on said bolts is done for a reason
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    there has to be some clearance to to get the wheel in and out

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    Quote Originally Posted by Laava View Post
    And so if it is 2 mm i should put a shim both sides in theory to keep things central.

    lining up your drive chain is whut'd be impotent. straight edge off teh drive sprocket. (but as said elsewhise, you're probably being a bit nurl about it.)

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    Quote Originally Posted by Akzle View Post

    lining up your drive chain is whut'd be impotent. straight edge off teh drive sprocket. (but as said elsewhise, you're probably being a bit nurl about it.)

    ERRRRRR wrong again.

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    Quote Originally Posted by bsasuper View Post
    ERRRRRR wrong again.

    hows that?

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    Lavva does the Strom have the same annoying habit as TLs of when you do up the axle nut the chain tightens,if so flip the axle round the other way.
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    Quote Originally Posted by 98tls View Post
    Lavva does the Strom have the same annoying habit as TLs of when you do up the axle nut the chain tightens,if so flip the axle round the other way.
    Common complaint, and so easy to avoid. I like to have the axle nut protected in a crash by the muffler, so it goes on the right. When tightening it, I put a rag between chain and sporcket, then roll the wheel so it pulls the chain tight as fuck. Then tighten the axle. Roll the wheel back, pull out the rag, and it will stay where you adjusted it to.

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    Fair call D,me im quite happy just to have turned the axle round..
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    Quote Originally Posted by Drew View Post
    Common complaint, and so easy to avoid. I like to have the axle nut protected in a crash by the muffler, so it goes on the right. When tightening it, I put a rag between chain and sporcket, then roll the wheel so it pulls the chain tight as fuck. Then tighten the axle. Roll the wheel back, pull out the rag, and it will stay where you adjusted it to.
    That is good thinking!

    Quote Originally Posted by 98tls View Post
    Lavva does the Strom have the same annoying habit as TLs of when you do up the axle nut the chain tightens,if so flip the axle round the other way.
    Nope, it has annoying habits but that is not one of them.
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