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  1. #1
    Join Date
    Nov 2009
    Location
    Seattle WA
    Posts
    125

    Default I think my speedo is terribly wrong!

    Ok, took my OBV out for the first time today and I think the speedo might be off. The speedo said 25mph max when I was flooring it above 5000 rpm and I know it felt faster than my old I/O (which maxed out at 35mph). Is it common for the speedo to be out by that much?
    2009 Outback V

  2. #2
    Join Date
    Jan 2003
    Location
    Minnesota and Wisconsin
    Posts
    1,197

    Default

    Also consider the impact of over-revving a new boat. If this is new - refere to manual for break-in guidelines. For a direct drive, 3000 RMP is about 30MPH. Not sure if that is true with VD, or the influence of the props. Chances are you were doing 46-48 mph. I am also thinking you shold have two speedos? Or have they done away with that now? Did they both read the same?
    If you believe something to be true, it will be - in it's consequences.

    2009 MasterCraft ProStar 197 - DD - 5.7L - 325HP - Zero Off

  3. #3
    Join Date
    Jul 2002
    Location
    London Ontario Canada
    Posts
    2,259

    Default

    Quote Originally Posted by BensonWdby View Post
    Also consider the impact of over-revving a new boat. If this is new - refere to manual for break-in guidelines.
    This is a good point, it takes about 8 hours to break the motor in properly. Anyways WOT top speed on your boat is prob 37 - 42 mph depending on prop and motor size unless you have the 409. one speedo as not an awsa slalom approved boat
    09 21v LAUNCH

    99 Outback LS. Sold


    run your engine after you change your oil
    68 th Member. WS420,HSE Revolution, OJ 466, Acme1157,1100 sacs,Kicker HLCD's n IX500.4, Supra Coolies
    Doug

  4. #4
    Join Date
    Nov 2009
    Location
    Seattle WA
    Posts
    125

    Default

    Thanks guys.

    Ed, I didn't know there was a speedo adjustment. I'll go look for it now.

    Benson, We were out for about 8 hours yesterday so the boat had about 9 hours on it when I opened her up. I was limiting RPM's according to the manual up until 5 hrs. I only have 1 speedo.
    2009 Outback V

  5. #5
    Join Date
    Jan 2003
    Location
    Minnesota and Wisconsin
    Posts
    1,197

    Default

    Actually I was going to go with something like, 'If something is wrong with your speedo then maybe you should stick to board shorts - or hit the gym...'.....
    If you believe something to be true, it will be - in it's consequences.

    2009 MasterCraft ProStar 197 - DD - 5.7L - 325HP - Zero Off

  6. #6
    Join Date
    Mar 2008
    Location
    Vancouver WA
    Posts
    3,034

    Default

    Flat... Thats kinda where I was going with this thread.
    I think Speedo's in general are terribly wrong.
    I'm more of a thong guy myself!
    Maybe I'll get a group buy for Embroidered Moomba thongs! Whos in?


    PWI as usual...

  7. #7
    Join Date
    Jan 2008
    Location
    Tallahassee, FL
    Posts
    14,071

    Default

    We may have to trade the Roo in for an elephant if this keeps up.
    My Mom said I'm not allowed to get wet!
    2008 LSV (sold)
    2000 Outback LS (sold)
    LLTR!!!!!!!!



  8. #8
    Join Date
    Mar 2008
    Location
    Vancouver WA
    Posts
    3,034

    Default

    Lol you made me spit my beer all over my new phone!


    PWI as usual...

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