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  1. #1
    Old Ski Insanity w/rpm500's Avatar
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    Need some Stator blueprinting info

    Besides doing a surface blueprinting on the stator vein asembly, what else can be done to this unit??

    Is there such thing as a desired leading edge radius/shape other than a box stockers?
    Is there an ideal trailing edge profile??
    Has it been proven in a pump unit that a semi rough surface is best to help release surface tension in a yamaha ?
    (im thinking some seadoo's use the rough surface through out ).

    This is a stock 155mm assembly.

    ANY PICTURES OF FINISHED STATOR'S WOULD BE HELPFUL..
    Thanks


  2. #2
    Mpeavler's Avatar
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    Quote Originally Posted by w/rpm500 View Post
    Besides doing a surface blueprinting on the stator vein asembly, what else can be done to this unit??

    Is there such thing as a desired leading edge radius/shape other than a box stockers?
    Is there an ideal trailing edge profile??
    Has it been proven in a pump unit that a semi rough surface is best to help release surface tension in a yamaha ?
    (im thinking some seadoo's use the rough surface through out ).

    This is a stock 155mm assembly.

    ANY PICTURES OF FINISHED STATOR'S WOULD BE HELPFUL..
    Thanks
    I've seen a detailed write up somewhere....either from Fercho...Phillip and or Mark AKA Hydrotoys....it's out there....I'll see if I can locate it.

    M

  3. #3
    JonnyB's Avatar
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    SBT had one I think but it was a simple clean up

    EDIT: http://server1.sbtontheweb.com/forum...ad.php?t=27492
    Last edited by JonnyB; 01-07-2009 at 07:15 PM. Reason: added link

  4. #4
    Old Ski Insanity w/rpm500's Avatar
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    thanks MP and JONNYB(nice link)..I did the WR a while back and thought there may be some new info and I'd ask(search here was pretty vague)...I think it was J-ME who mentioned the sea doo's roughness..

    MPeavler, if you find that please post it here so others can view it ...
    Eric

  5. #5
    cheatin' piston popper addicted's Avatar
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    total waste if time IMO. there were no measurable gains on the 2 that I did, and that seems to be the consensus among people on the forums. If you have a long, boring winter ahead of you, the go for it. just don't expect anything tangible.

    The veins should have an airfoil shape. rounded leading edge, sharp trailing edge. smooth everything out. imagine you are water passing through the pump. smooth anything that will get in your way.

    i'll check if i have pics of mine when i get home.

  6. #6
    philip_gpr's Avatar
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    there is also speculation that those casting marks aren't casting marks at all and they are intended to be there and they have a purpose

  7. #7
    Old Ski Insanity w/rpm500's Avatar
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    The WR didnt show anything more on top (its limited to 5500 rpm),I did feel that it came out of the hole quicker..
    feeling it may have been just that ,the same feeling you get driving a nice clean car after a winter of snow and slush..
    ( yes, i remember those days,in florida now...).
    An acceleration radar charting before and after may prove this to be true on a bigger ski (thought i saw this proven some where?)...

    As the newer 155 pump for the gp is apart and I have the tools ,figured this may be a quick easy job...

    PHILLIP ..turbulators maybe? like the wing surfaces on a WWI fighters..

  8. #8
    JonnyB's Avatar
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    Quote Originally Posted by w/rpm500 View Post
    thanks MP and JONNYB(nice link)..I did the WR a while back and thought there may be some new info and I'd ask(search here was pretty vague)...I think it was J-ME who mentioned the sea doo's roughness..

    MPeavler, if you find that please post it here so others can view it ...
    Eric
    not a problem. I did the SBT way on a spare 144 pump I had and put it in a superjet and I can't say I noticed anything.

    On the roughness part if you read all of the link that I posted Bill O did some back to back testing on a Seadoo XP pump. One being stock the other EXTRUDEHONE and he did not have any gain in MPH

  9. #9

  10. #10
    Mpeavler's Avatar
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    Thanks Billy!

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