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  1. #1

    What diameter is a polaris virage 700 driveshaft?

    Does anyone know the exact diameter of a polaris virage driveshaft?
    Are they designed in inches or mm?

    I went to my local dealer to buy a new driveshaft/ hull bearing and seal unit.

    Im based in Australia and the dealer said they don't stock this particular part. They usually just retrofit a seado one instead.

    The seado one is a needle roller style bearing and seemed to fit ok.
    The shaft was given a linish using a lathe and fine sandpaper to remove any imperfections.
    I made the mistake of assuming that since it fitted, that they were right about them being interchangeable.

    However, on my second ride the guts of the drive coupler disintegrated.
    I took the seat off and the was quite a bit of smoke coming out of the hull.

    I touched the coupler and it was a similar temperature to what the engine would normally be, however, when i put my finger on the driveshaft it burned my finger straight away.

    So my theory on what has happened is that the bearing to shaft clearance is too tight and causing a big heat buildup which has compromised the rubber in the coupling.

    We rarely use inches in Australia, it's mostly metric.
    So i think i may have made the mistake of assuming that both the shaft and the bearing were metric, but i measured the shaft today with vernier calipers and im getting a reading of 22.3mm.

    I also have the "yang wong" copy of the polaris, not the genuine polaris, so i want to check if someone on here knows what diameter they are exactly.


  2. #2
    Click avatar for tech links/info K447's Avatar
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    Which part actually failed? The engine to driveshaft coupler, or the through-hull bushing/bearing/driveshaft water seal assembly?

    On the Yong Wang, is the engine to driveshaft coupler a rubber bonded coupler?

    http://greenhulk.net/forums/showthre...l=1#post793813

  3. #3
    Quote Originally Posted by K447 View Post
    Which part actually failed? The engine to driveshaft coupler, or the through-hull bushing/bearing/driveshaft water seal assembly?

    On the Yong Wang, is the engine to driveshaft coupler a rubber bonded coupler?

    http://greenhulk.net/forums/showthre...l=1#post793813
    Thanks K447

    It was the rubber bonded coupler that let go.
    In fact the link you attached described my predicament to the letter.
    I also am lucky enough to have a spare coupler, so i have attached some pics to show the damage.

    Do these couplers break often or is it a rare occurrence.
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  4. #4
    Click avatar for tech links/info K447's Avatar
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    Rubber bonded coupler failures, in my experience, are rare. It does happen obviously, but not often.

    The through-hull bearing you show is aftermarket. It has steel roller bearings inside and it must be kept well greased. Doubly so for salt water use.

  5. #5
    Thanks K447

    It's good to know they don't break that often.
    Yeah i'll keep it greased up.

    I haven't worked out what the bearing size is exactly but i'll knock .3mm off the driveshaft journal area to stay on the safe side.

  6. #6
    Click avatar for tech links/info K447's Avatar
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    Quote Originally Posted by Jase View Post
    ...

    I haven't worked out what the bearing size is exactly but i'll knock .3mm off the driveshaft journal area to stay on the safe side.
    I am not sure what exactly you are doing.

    You have a Seadoo driveshaft, apparently lathe/machined to a slightly smaller diameter. To fit through a Seadoo through-hull seal assembly?

    So you know what diameter the Seadoo through-hull bearing is?

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