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Thread: Unsprung weight

  1. #31

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    How did you weld it and keep it balanced... that’s a very high RPM object spinning.

  2. #32
    YAMAHA POWAAAA !!!!! 1_Fast_SHO's Avatar
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    Quote Originally Posted by cjk6119 View Post
    When I just bought this ski I welded the (OEM) supercharger shaft to the gear that was connected to a 20 psi wheel. Last night I removed the supercharger shaft to check the bearings and to see if the welded shaft is holding up after 182 hours on it. The bearing looks good and the welded gear looks good too.

    It looks to me that you can weld the gear to the shaft and all will be good.

    Hope this will help some people here.
    Take Care
    CJ

    "Only the dead have seen the end of war." Plato
    This has been done for years.

  3. #33

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    So I was under the impression the shafts break not the impeller comes loose?

    so by welding it it’s stops from breaking or just coming loose.

  4. #34

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    The gear moves on the shaft. It is just pressed on. It can "walk away" from the super charger clutch and you have not boost or spin on the shaft.

    Robert


  5. #35

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    Quote Originally Posted by mittens View Post
    So I was under the impression the shafts break not the impeller comes loose?

    so by welding it it’s stops from breaking or just coming loose.
    Sorry for the delay,, mittens this welding is just makes sure that the factory gear that was press fitted on the shaft does not come loose. I think the gears started to be press fitted on the compressor shafts after 2014. I did this to stop the possibility of the gear walking off and the compressor wheel coming in contact with the volute section of the housing.

    Take Care Mittens
    CJ

    I see you had another post for me ,,,, I welded the gear using carbon dioxide and argon gas, I used 90 amps setting on the welder.
    Hope you found this helpful to you.
    CJ
    Last edited by cjk6119; 01-09-2020 at 03:34 PM.

  6. #36

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    Thanks for all responses. Makes a more since.

    but how about balancing the shaft after welding?

  7. #37

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    Quote Originally Posted by mittens View Post
    how about balancing the shaft after welding?
    First you need good penetration from the mig welder, to fuse the two metals together with filler metal. Then grind excess welded metal flat to not quite the same surface. This keeps the gear and shaft balanced, so when you are done it`s fused together.
    Now if you look at the aera that was welded, it will looks like one piece. By grinding it down, keeps it balanced. At the end of the job it`s not very much heavier than when you started.

    Take Care
    CJ
    Last edited by cjk6119; 01-10-2020 at 12:24 PM.

  8. #38
    i would think the best way to weld the shaft is to tig weld it and i would think a good but weld would b best. you don't need a filler rod for a but weld so wouldn't add any weight to the shaft and wouldn't need to grand any weld off. won't change the balance any.
    Last edited by yellow jacket; 01-10-2020 at 04:32 PM.

  9. #39

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    Quote Originally Posted by yellow jacket View Post
    i would thing the best way to weld the shaft is to tigg weld it and i would think a good but weld would b best. you don't need a filler rod for a but weld so wouldn't add any weight to the shaft and wouldn't need to grand any weld off. won't change the balance any.
    Did you Tig-Weld yours or buy a new
    shaft?

  10. #40
    Cj has some skills!!!!

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