To lab or not to lab?
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To lab or not to lab?

  1. #1
    Havasu & Anaheim Hills TNTDUNER's Avatar
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    Default To lab or not to lab?

    I tried a 32 labbed Bravo prop on my Daytona 26 and it was good. This past weekend I tried a stock 34 and it was way better than the labbed 32. The boat came up on plane faster at lower rpms, top speed was higher and rpms at top speed were lower. I figured I would get these results on the top end but what shocked me was coming up on plane, I thought it would be much worse with the stock 34 over the labbed 32.

    So, if I am happy with the stock 34 would I be even happier with getting it labbed? I have heard some people who have gotten a prop labbed and ended up liking the prop better when it was stock.

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    Ultra 27 Shadow shippingguy's Avatar
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    All boats are different....I know my boat with a labbed prop unless it is a 5 blade does not work. It flexes the blades too much!

  4. #3
    KAP
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    Comment:

    A labbed propeller on my boat has always been better on the top end in every pitch.

    As for the 34 Pitch Bravo I my boat does not like it labbed or otherwise. I stepped up to the 35 and it is smokin fast.

    In your commentary you did not say if you hit the rev limiter with your labbed 32 if you did then going up in pitch makes sense and why your getting more performance.

    If you pulled the 34 and still hit the limiter [Note: In a properly trimmed setup not caused by over trimming i.e... prop blowout] then you still have room to move up.

    Boats are like snowflakes they are all made of the same materials but no two are alike. You try enough props and you will findout real quick what works.

    KAP

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  6. #4
    RvRrat
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    Non labbed props are like a box of chocolates. You never know what you're gonna get

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    Havasu & Anaheim Hills TNTDUNER's Avatar
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    I didnt run the stock 32 I bought from you yet, just a buddies labbed 32. With the labbed 32 I hit the rev limiter at 6500. With the 34 it runs 100 at 5000 rpm with low fuel and two on board. I can get it up on plane with the rpms below 2700. At 6000 it was getting close to 120 and then I called it a night on Saturday. I will keep playing with them next trip and try out your stock 32 and see how that goes.

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    Senior Member Hullshot's Avatar
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    Quote Originally Posted by TNTDUNER View Post
    I didnt run the stock 32 I bought from you yet, just a buddies labbed 32. With the labbed 32 I hit the rev limiter at 6500. With the 34 it runs 100 at 5000 rpm with low fuel and two on board. I can get it up on plane with the rpms below 2700. At 6000 it was getting close to 120 and then I called it a night on Saturday. I will keep playing with them next trip and try out your stock 32 and see how that goes.
    What motor did you go with?

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    KAP
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    Quote Originally Posted by TNTDUNER View Post
    I didnt run the stock 32 I bought from you yet, just a buddies labbed 32. With the labbed 32 I hit the rev limiter at 6500. With the 34 it runs 100 at 5000 rpm with low fuel and two on board. I can get it up on plane with the rpms below 2700. At 6000 it was getting close to 120 and then I called it a night on Saturday. I will keep playing with them next trip and try out your stock 32 and see how that goes.
    Comment:

    Mercury makes several variations of labbed props in every pitch. From the information you provided above it seems you were not able to pull the 34---ie...running WOT to hit the limiter.

    If this is the case you are over propped and probably need a 33 pitch Bravo I---I have one and it is a very fast propeller but I hit the rev limiter real quick at 118MPH in exactly three quarters of mile from an in gear start.

    Curious your rev limit is aweful high for a BBC is that were your motor is making the peak power?

    What is your final drive gear ratio I assume a 1.35?

    KAP

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