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  1. #1
    Join Date
    Dec 2007

    best prop for pantera 28 at cruise

    hi all
    im running a stock 30 bravo on a merc diesel @3800 rpm getting 52 mph
    the boat is 4900lbs
    so what i was thinking my max rpm would be the same as your cruise rpm
    what prop would you use for max speed at cruise 3800

    cheers gerard

  2. #2
    My Boats:
    yamaha sx190,yamaha exciter, yamaha ls2000 w c 255dc , 38sonic,38fountain ec,35outlaw,28pantera,27donzi zx ect
    Join Date
    Jun 2005
    west palm beach FL,
    have you tried a bigger prop let say a 32 pitch 4 blade and if you did what was the top rpm with that prop ?
    if you were 200 or 300 rpm lower then your 3800rpm max you can lab a 32 and pick up the difrence in rpm and have a faster cruise speed


  3. #3
    JC Performance Engines Gold Member Stormrider's Avatar
    My Boats:
    2003 28 Pantera
    Join Date
    Jul 2002
    Long Island, NY
    gerard, we need to know what rpm max torque is at, and what is max rpm for the engine?
    With great power, comes great responsibility.

  4. #4
    Charter Member # 55 Charter Member Griff's Avatar
    My Boats:
    ..........32........... Active Thunder
    Join Date
    Oct 2000
    Your propslip is about 26% which is way too high. You should be able to get it down to around 16%. I ran about 52mph at 4000rpms with a 26 Bravo prop. Your boat is also about 400# lighter than mine was.

    Where is the X dim or propshaft height set at?????
    You may want to consider a 5 Blade Maximus or P5X prop.

  5. #5
    Join Date
    Dec 2007
    hi again thankyou all for your replys

    the max torque is 526ft lbs @2400
    and the max rpm is 4000
    the x was 17.5 and i added a 1" spacer and it made no difference
    with the drive tucked under the boat im getting 3600rpm 49mph
    and when i trim it out i only gain 3mph
    the cabin is gutted so there is little weight up front
    i had a 28 b1 before the 30 and it was 50 mph @ 4000

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