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Thread: Disc direction?

  1. #1
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    Disc direction?

    Got two discs off trade me ages ago for a project but just realised they are both left hand discs.
    They are off an rgv250 and the same as gsxr400's amongt others.

    The question is can i get one rotor turned on the carrier to make it a right one or not.
    winding up stucky since ages ago

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    Photo's?......................
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  3. #3
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    Quote Originally Posted by Laava View Post
    Photo's?......................
    Same as these design
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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    winding up stucky since ages ago

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    Left/right...what is the difference? I've never heard of discs that are directional...
    Do you realise how many holes there could be if people would just take the time to take the dirt out of them?

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    Quote Originally Posted by MSTRS View Post
    Left/right...what is the difference? I've never heard of discs that are directional...
    No difference.......that's why they're both left.

    Actually, it's the sweeping pattern of the rotor holes. They should sweep backward from bottom to top.......at least that's my understanding.
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    Quote Originally Posted by Owl View Post
    No difference.......that's why they're both left.

    Actually, it's the sweeping pattern of the rotor holes. They should sweep backward from bottom to top.......at least that's my understanding.
    +1

    Your quiet right Owl

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    Quote Originally Posted by Owl View Post
    No difference.......that's why they're both left.

    Actually, it's the sweeping pattern of the rotor holes. They should sweep backward from bottom to top.......at least that's my understanding.
    Really? My understanding is that the holes simply reduce weight and provide better cooling...
    Do you realise how many holes there could be if people would just take the time to take the dirt out of them?

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    Quote Originally Posted by MSTRS View Post
    Really? My understanding is that the holes simply reduce weight and provide better cooling...
    I think the backwards from bottom to top is just done so it looks cooler, unlike some carriers (also sometimes part of the disc) with angled 'spokes' which must sweep from top to bottom. Hole placement won't be exerting force on the carrier or disc, but may make some difference to the stresses internal to the disc.

    I'd flip it mainly so every observant fella doesn't give you shit about it
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    Quote Originally Posted by bogan View Post
    I'd flip it mainly so every observant fella doesn't give you shit about it
    Are there really trainspotters in this country...?
    Do you realise how many holes there could be if people would just take the time to take the dirt out of them?

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    Quote Originally Posted by MSTRS View Post
    Left/right...what is the difference? I've never heard of discs that are directional...
    The solid (non floating) discs I had on my Harley were visially directional - and marked 'L' and 'R' accordingly..
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    Quote Originally Posted by MSTRS View Post
    Really? My understanding is that the holes simply reduce weight and provide better cooling...
    I'm sure that's true and the sweeping pattern is no doubt aesthetic, but it is what it is. Some rotors are identical copies (universal), while some are mirror images (L+R).
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    Quote Originally Posted by Owl View Post
    No difference.......that's why they're both left.

    Actually, it's the sweeping pattern of the rotor holes. They should sweep backward from bottom to top.......at least that's my understanding.
    I had been told the hole pattern is for better cooling.
    Not sure if its true and what the ramifications are for running it backwards except the shit factor as has been mentioned.
    winding up stucky since ages ago

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    You could always contact Steve at F1 Engineering in Hamilton. He does rotors, but I wouldn't imagine that work would be cheap?
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    Quote Originally Posted by scumdog View Post
    The solid (non floating) discs I had on my Harley were visially directional - and marked 'L' and 'R' accordingly..
    I've heard the genuine Harley Davidson boots are also marked the same way ...
    When life throws you a curve ... Lean into it ...

  15. #15
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    Quote Originally Posted by Owl View Post
    You could always contact Steve at F1 Engineering in Hamilton. He does rotors, but I wouldn't imagine that work would be cheap?
    Might do that.
    Not sure on cost as they would be standard size rivets wouldnt they? { take old rivets out reverse disc new rivets in} simple
    winding up stucky since ages ago

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