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Props

Discussion in 'Post Yacht' started by bradlangdon, Oct 26, 2026 at 3:45 PM.

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  1. bradlangdon, Oct 26, 2026 at 3:45 PM
    #1
    bradlangdon

    bradlangdon New Member

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    510 SW South Carolina Drive, Stuart
    I am quite sure that this has been hammered out many , many times. However, he we go. I am looking for suggestions on exact prop size for 43 C Gen II hull with 485 671 TIB's. Currently missing about 200 turns and I think that the wheels are three blade 24x25 with number two cup currently. Suggestions would be much appreciated. Thank you.
  2. Capt Ralph, Oct 26, 2026 at 5:00 PM
    #2
    Capt Ralph

    Capt Ralph Senior Member

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    I'm sure you have a mirror smooth hull and fresh filters, rite???
    Have you ever made RPM?
    Any new toys or equipment on board since the last time you made RPM?

    I added some inverter batteries on our 58. WOW, heck of a difference.
  3. bradlangdon, Oct 26, 2026 at 5:05 PM
    #3
    bradlangdon

    bradlangdon New Member

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    Location:
    510 SW South Carolina Drive, Stuart
    Bottom is good and fresh, no huge additions, never made past 2300 since owned. I am thinking that the wheels are pitched to much with number 2 cup.
  4. Capt Ralph, Oct 26, 2026 at 5:11 PM
    #4
    Capt Ralph

    Capt Ralph Senior Member

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    Location:
    Satsuma, FL
    Any EGTs available? Exhaust color?
    Are you happy with the performance you have currently?

    The #2 cup is only reactive at max RPM, Possibly could be tapped back out to a lesser cup.
    For normal cruising, you are probably rite in the groove as far as water hook-up goes.

    I'm thinking leave them alone till they fall off or get clobbered. Than a new set of 24 x 23 four blades.

    In your hood is my prop shop. Tap on Paul for some real science.
    https://tcpropscan.com/
    Last edited: Oct 26, 2026 at 5:16 PM
  5. bradlangdon, Oct 27, 2026 at 10:54 AM
    #5
    bradlangdon

    bradlangdon New Member

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    Location:
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    Yeah, not exactly happy with the performance totally. I would like to see cruise get to 2050-2100 of course if we are making the reco 2500 and then the cruise speed would be slightly better than now. I am going to consider all things and then jump on it soon.
  6. Greg Page, Oct 27, 2026 at 4:50 PM
    #6
    Greg Page

    Greg Page Senior Member

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    Annapolis MD
    I could give you the specs and RPM/Speed from my props by Black Dog if you want a reference. Would need to adjust RPM for difference in gear ratio.