Prop change question. Eliminator 23 XP 454/Bravo One
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Prop change question. Eliminator 23 XP 454/Bravo One

  1. #1
    Senior Member nikwho's Avatar
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    Default Prop change question. Eliminator 23 XP 454/Bravo One

    Hello guys,
    I recently purchased my Eliminator Eagle 23 XP. IT has a 454/Bravo One with a four blade stainless 22P prop. It gets out of the hole very well and planes easily with 1/3-1/2 throttle. It tops out quickly with seemingly little effort. My instinct was to jump up to a 26P prop, but I have just come upon a 28P four blade stainless Brave One prop locally and thought that it was priced well and would be worth trying out. I don't pull skiers and we pull a tube from time to time. Thoughts on jumping from a 22P to a 28P? I will keep the 22P prop for skiing, tubing etc. but wanted a second prop for more top end. I've see. The calculators but not sure on all of the variables. Is 15% a good guess for slippage? Should I run the boat on GPS at a certain RPM and note the speed to figure the factor for slippage? I'd like to be able to figure out my top speed with a given prop. Is a jump from 22P to 28P to big?

    Thanks for your guys' time and help!

    Nik C.

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  3. #2
    Senior Member nikwho's Avatar
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    Also, I have been playing with the prop calculators and have a question on another variable. The gear ratio on my Bravo One? Is there a standard, or do they leave the factory with different gear ratios?

    Thanks again for helping a rookie out!!!

    Nik C.

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    Senior Member nikwho's Avatar
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    I'm thinking that this big of a prop change may be too drastic based off of the relevant info I've found from searching. I didn't want to give wrong I fo, but some info is needed so, if my memory serves me correctly, I believe that with the 22p prop that is currently installed, I wanna say I'm hitting just a hair below 5K RPM @ about 58 MPH, trimmed up. Seems like it needs more prop, I just don't now how much more.

    Also, would my boat be a candidate to see much gain from a labbed prop, or am I going to do just as well with an off the shelf prop?

    Nik C.

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    Senior Member Bubbletop409's Avatar
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    If your running 5K RPM now with your current prop my question would be is that all the engine can pull or are you on the limiter. Not sure how your limiter is set on that particular engine combination, but if you are ON the limiter you may be able to pull a SLIGHTLY larger pitch. If 5K is all the engine will pull without hitting the limiter, then your probably very close to an optimum combination presently.
    Larry

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    Senior Member Hullshot's Avatar
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    A 28 would be too big of a jump
    You probably won't be able to turn motor over 4K with it
    If you have the merc 454 it tops out at 4800-5000. If you are hitting that with the 22p at part throttle than you may be able to run a 24p it you are wot and that is the max rpm you see them you might send prop out to have it slightly tweaked to achieve better mph but your probably not going to see much, 1-3mph maybe.

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    I had a 2008 Eagle 230 w a 496 Mag (non HO) but recently moved up to an Eagle 260.

    Initially I started with a 21p Rev4 as it came with the boat. Screaming prop, jumped out of the hole hard but hit the rev limiter very easily. Max speed (rev limiter governed) was 64mph. It may have been interesting to try a Rev4 in a 23p or 25p (which I believe is the biggest option for that prop). The boat really liked this prop.

    I went to a Bravo1 24p Labbed. Great prop for this boat, a bit less bow lift as compared to the Rev4. Tons of jump out of the hole and a good top end (68-69mph) too. The lab really helped with acceleration but not quite the hit of the smaller Rev4, but that was expected with the jump in pitch.

    I tried a Bravo1 26p (non labbed) on it one day and it was a DOG out of the hole and also lost a few mph on the top end as I had to trim the snot out of it and it started to get prop wash.

    I later flashed the PCM and also put some CMI e-top headers on it but never tried another prop. I think the winning ticket on this boat would have been a Bravo1 26p with a custom lab (maybe have Brett at BBlades or someone similar do it). A good blend would have been to keep that low end hit and get a couple/few more mph out of it with a custom tweaked 26p.

    At some point the lack of length, non stepped hull, no hydraulic steering, etc., starts to become more of an issue as you increase speed in the 230.

    I have no idea what the HP difference is between my engine setup and yours, but I hope this data helps. I would be shocked if you could carry a 28p on this boat without some serious HP.

  9. #7
    "BOUGHT NOT BUILT" 2FORCEFULL's Avatar
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    Quote Originally Posted by nikwho View Post
    Hello guys,
    I recently purchased my Eliminator Eagle 23 XP. IT has a 454/Bravo One with a four blade stainless 22P prop. It gets out of the hole very well and planes easily with 1/3-1/2 throttle. It tops out quickly with seemingly little effort. My instinct was to jump up to a 26P prop, but I have just come upon a 28P four blade stainless Brave One prop locally and thought that it was priced well and would be worth trying out. I don't pull skiers and we pull a tube from time to time. Thoughts on jumping from a 22P to a 28P? I will keep the 22P prop for skiing, tubing etc. but wanted a second prop for more top end. I've see. The calculators but not sure on all of the variables. Is 15% a good guess for slippage? Should I run the boat on GPS at a certain RPM and note the speed to figure the factor for slippage? I'd like to be able to figure out my top speed with a given prop. Is a jump from 22P to 28P to big?

    Thanks for your guys' time and help!

    Nik C.
    what horse power is the motor..

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