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Thread: 30hp yamaha

  1. #1
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    Default 30hp yamaha

    ...

  2. #2
    Team Member fs5's Avatar
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    i'd try a higher pitch prop first mate,see if you can get hold of a 18p merc chopper.
    where abouts you at in aus ? i have a mate up here that can get new 18p choppers for about $800.you may need to rebush it to suit the yam though.
    i used to run a 25hp merc on a 12ft hunter flat bottom (i think they were only rated for 6hp)it used to crack .we flipped it one night at windermere dam.
    theres nothing better than an over powered tinny.

  3. #3
    FFX-61
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    Default

    got a shot of it?

    Part one of "Secrets of the OMC Mod 50" : http://www.boatracingfacts.com/forums/showthread.php?t=2052

  4. #4
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    thanks for the replys
    its away geting worked on for the rest of this week so
    ill get some snaps when i get it back
    the rules are the cav plate has to be level or below the
    planing suface of the hull also we have to run through the hub exhausts
    so no chopper props ect..
    im running a 15" ballistic but thinking i should maybe step up
    to a 16 or 17... anyone got a link where i can find one...
    any other suggestions on how to make this thing
    go harder would be muchly appreciated

  5. #5
    Team Member david bryan's Avatar
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    Quote Originally Posted by ryleigh View Post
    thanks for the replys
    its away geting worked on for the rest of this week so
    ill get some snaps when i get it back
    the rules are the cav plate has to be level or below the
    planing suface of the hull also we have to run through the hub exhausts
    so no chopper props ect..
    im running a 15" ballistic but thinking i should maybe step up
    to a 16 or 17... anyone got a link where i can find one...
    any other suggestions on how to make this thing
    go harder would be muchly appreciated
    stiffing the bottom and make sure no hooks or rocker will help
    David Bryan

  6. #6
    Team Member vrunner79's Avatar
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    Default going inside..

    Hello:
    What about inside the engine? rule restrictions?
    IF NOT,: "open" your reed valves stops 1 (one) millimeter all of them, (use plastic reeds)
    you must also see how your top pistons* are, so you can lean out a bit, clean all the exhaust ( the best you can), does that motor have megaphone? clean it well, use synthetic oil, shave the cylinder head (if permitted) just .015"
    get your propeller thinned...as far as it doesnt break a paddle under "big" power.
    Go down in weight, (you of course..!!)
    there is a minimum weight? boat & driver??
    Hope you can go faster...!
    if not, take 5, or 6 shots of tequila..and go dancing...

    Happy landing...
    *black & oily= rich
    clear tan&little dry=optimum
    very clear tan&dry=broken motor (the entire tequila bottle)
    Last edited by vrunner79; 03-28-2009 at 08:16 PM. Reason: UPLOAD SOME PICTURES...GO..!

  7. #7
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    yeh ill have to get on to it and talk to the guy about
    what he has exactly done already
    cheers for the advise

  8. #8
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    Default

    Hey Ryleigh!

    We are all hoping that you wakeboard a whole lot better than you drive a race boat!
    That may give some of us some chance at least. By the way you can't tumble one of things over the wake by the way...in case you weren't sure!

    Your secrets out now though mate and the walls have eyes and ears!
    At least you are being open about it though mate.
    Guessing you will be having a run ANZAC weekend with your new toy?
    Sounds like you are on the right track!
    Good luck with it and hope it goes well.

    Cheers Haych

    ps: Congrats on your Wakeboard Nationals efforts too!!

  9. #9
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    hey man cheers
    yeh get the new one back for the
    2nd time wensday so be going for a run then
    whats the go anzac day...
    heading to mildura for a race at easter..
    well have to organise to go for a run sometime
    ill give ya a ring this week wanna ask ya a couple of things

    cheers
    catcha

  10. #10
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    i have a mini merc chopper, needs to be re-hubbed though to fit a 30hp.
    i will sell it for $600AUS, if i dont sell it ill just keep it, they dont loose value haha

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