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Thread: RC30 What does this mean?

  1. #31
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    Quote Originally Posted by Drew View Post
    Who told you that they were an upgrade? MotoGP bikes run balls.
    Well that's a downgrade then I guess.
    I'd challenge any rider to pick the difference however.

  2. #32
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    Quote Originally Posted by sidecar bob View Post
    Well that's a downgrade then I guess.
    I'd challenge any rider to pick the difference however.
    I doubt anyone outside of GP or WSBK has tuned a bike anywhere near well enough for it either.

  3. #33
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    Quote Originally Posted by husaberg View Post
    replacement cases generally are not numbered so that you can number them the same as per original?
    Harley were known to supply un-numbered cases for the KR and XR as the AMA insisted on title papers for race bikes. Never personally seen jap replacement cases un-numbered...

    The steering head bearing thing is not simple. My understanding is that the top shit stuff uses balls, yes, but caged not loose. Never found a source for these in NZ. repeat, in NZ. Given that real race stuff is liable to have forks/offset yokes/stanchions changed at the track, you really don't want to use loose balls.

    Properly aligned taper rollers - in a stiff steering head piece - will certainly carry a higher lateral load. I'd use them for preference in a short sidecar over balls.

    A period comment is relevant here - practise for the WSB at Manfield, I went to see Hepburn to see how his engine was peforming. He was saying that he could not believe how physical the European riders were at the end of the back straight. They went in very deep and faster than he was, then gave a hard pull on the bars to get it turning. Very high steering loads going in at that point.

  4. #34
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    20th January 2010 - 14:41
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    Quote Originally Posted by Grumph View Post
    Harley were known to supply un-numbered cases for the KR and XR as the AMA insisted on title papers for race bikes. Never personally seen jap replacement cases un-numbered...

    The steering head bearing thing is not simple. My understanding is that the top shit stuff uses balls, yes, but caged not loose. Never found a source for these in NZ. repeat, in NZ. Given that real race stuff is liable to have forks/offset yokes/stanchions changed at the track, you really don't want to use loose balls.

    Properly aligned taper rollers - in a stiff steering head piece - will certainly carry a higher lateral load. I'd use them for preference in a short sidecar over balls.

    A period comment is relevant here - practise for the WSB at Manfield, I went to see Hepburn to see how his engine was peforming. He was saying that he could not believe how physical the European riders were at the end of the back straight. They went in very deep and faster than he was, then gave a hard pull on the bars to get it turning. Very high steering loads going in at that point.
    I think the idea of the Race bikes using balls is simply the steering head can be smaller and the bearing is lighter. any advantage is worth it, Taper rollers will of course last longer, Those Cadged balls things Suzuki run must be a far bit cheaper to make.not much diferent to push bike wheel bearings.
    Honda NF4 ones were taper rollers and are made of unobtainium. unless you want to machine to size from another. Bloody Honda and bearings and seals.

    I had a search around and yeah the Hondas def replacement cases were un numbered on the Cb750's anyway.
    http://forums.sohc4.net/index.php?topic=49903.0

    I think the RC30 and VFR stuff differences was in something i sent to you wasnt it?
    http://rc30.yolasite.com/engine.php
    Quote Originally Posted by Katman View Post
    I reminder distinctly .




    Kinky is using a feather. Perverted is using the whole chicken

  5. #35
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    I bought nf4 ball caged bearings from tss via eurobike , no wait um, k4 , k2, um. . . Ok some accessories distributor. The difference is where the bearings bear against supposedly and , ahh, I got told some stuff in the 90s but buggered if I remember

    3rd edit. R2.
    I've been told. Dreaming`s free.
    Think I'll go, back to sleep.
    Everybody listen, voices in my head
    Everybody listen, do yours say, what mine says?

  6. #36
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    Quote Originally Posted by Grumph View Post
    Never personally seen jap replacement cases un-numbered...
    I have a set of new Yamaha XJ550 cases at home with no numbers on them
    "If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough power."


    Quote Originally Posted by scracha View Post
    Even BP would shy away from cleaning up a sidecar oil spill.
    Quote Originally Posted by Warren Zevon
    Send Lawyers, guns and money, the shit has hit the fan

  7. #37
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    Quote Originally Posted by Kickaha View Post
    I have a set of new Yamaha XJ550 cases at home with no numbers on them
    What? Why?

    You're a weird guy bro.

  8. #38
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    Well yeah . He's not kinda normal.
    Good guy though make no mistake.
    I've been told. Dreaming`s free.
    Think I'll go, back to sleep.
    Everybody listen, voices in my head
    Everybody listen, do yours say, what mine says?

  9. #39
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    Quote Originally Posted by Drew View Post
    What? Why?

    You're a weird guy bro.
    Why not ?

    Pot meet kettle....

  10. #40
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    Quote Originally Posted by Drew View Post
    What? Why?

    You're a weird guy bro.
    $50 off trademe for a brand new set bought off a guy who used to proddy race one, I've got enough at home to build three of those bikes now, fuck knows what I'll do with them all
    "If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough power."


    Quote Originally Posted by scracha View Post
    Even BP would shy away from cleaning up a sidecar oil spill.
    Quote Originally Posted by Warren Zevon
    Send Lawyers, guns and money, the shit has hit the fan

  11. #41
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    Quote Originally Posted by Kickaha View Post
    $50 off trademe for a brand new set bought off a guy who used to proddy race one, I've got enough at home to build three of those bikes now, fuck knows what I'll do with them all
    What about a bobber, a chopper & a scrambler?

  12. #42
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    Quote Originally Posted by sidecar bob View Post
    What about a bobber, a chopper & a scrambler?
    you need slapping real quick....

  13. #43
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    Quote Originally Posted by sidecar bob View Post
    What about a bobber, a chopper & a scrambler?
    I have 90% of a roll of exhaust wrap I will donate!
    In the white room, with black curtains, at the station

  14. #44
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    Quote Originally Posted by HenryDorsetCase View Post
    I have 90% of a roll of exhaust wrap I will donate!
    Use it to tie your legal briefs up instead of the usual red tape...

  15. #45
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    Quote Originally Posted by sidecar bob View Post
    What about a bobber, a chopper & a scrambler?
    I was thinking more Café racer, Scrambler and Pre 82

    Quote Originally Posted by jellywrestler View Post
    you need slapping real quick....
    One of them is your brothers old bike

    Quote Originally Posted by HenryDorsetCase View Post
    I have 90% of a roll of exhaust wrap I will donate!
    Any brown material for a seat ?
    "If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough power."


    Quote Originally Posted by scracha View Post
    Even BP would shy away from cleaning up a sidecar oil spill.
    Quote Originally Posted by Warren Zevon
    Send Lawyers, guns and money, the shit has hit the fan

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