Thread: Prop to pad

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  1. 01-29-2021, 09:04 AM #1
    MPS Fishing
    MPS Fishing is offline
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    Prop to pad

    Hey all. I have a 2012 Alpha 199SC and just repowered with a 2020 Mercury ProXS 225. I am wondering what the best prop to pad ratio is. I do have a hydraulic jack plate but want a good starting point. I know with the former 2 stroke the ratio was around 3.25-3.5 in but not sure if going to a 4 stroke changes that. As is with a 23 tempest I am pushing 5800 rpm 68 mph wot trimmed out and 6” jack plate on 4.5 in. And still pushing 25psi water and no rooster tail. Thinking I need to raise the motor up at least 1 bolt hole on the jack plate. Any suggestions?
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  2. capt odie
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    #2 03-14-2021, 09:21 AM
    I run a 211.
    i would think you’re to deep ptp
    try 3 1/2 ptp and report bac
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  3. b00stin4
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    #3 03-15-2021, 02:37 PM
    4.5 Seems too low.. I would expect 3-3.5" to be best
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