Would a sharpened and balanced Prather 235 work for me?

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  • Linewbie
    Senior Member
    • Apr 2017
    • 143

    #1

    Would a sharpened and balanced Prather 235 work for me?

    Im currently running a Promarine 34" MTR on 6s. The original motor was a 3674 2075kv SSS and a 120a Seaking. I was told the stock prop is pretty close to an X442. With the stock set up the maunfacturer said an X445 is about the limit. Ive upgraded the esc to a Seaking 180a and just purchased a Leopard 4082 1600kv. Im in the process of reinforcing the hull. I picked up a few Prather 235's for future use and was wondering if a prop this large would be ok on the above set up. Boats purpose is for sporting, and speed passes, no organized racing. Thanks to all.
  • CraigP
    Fast Electric Addict!
    • May 2017
    • 1464

    #2
    That’s 35,000rpm’s... And that’s a pretty big wheel. I would start with a 225 and check temps.

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    • fweasel
      master of some
      • Jul 2016
      • 4281

      #3
      The Prather 235 is nearly 51mm in diameter and a 1.6 pitch ratio, which is like an octura x651 if there was such a prop. As Craig said, that's a big prop.
      Vac-U-Tug Jr (13mph)

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      • Linewbie
        Senior Member
        • Apr 2017
        • 143

        #4
        If figured it was going to be a little on the larger size for that application. Thought maybe I could get away with it if I took a little material off of the prop. Maybe I can trade one or two if them off, or just save them for a larger built later on. Thanks as always for the help guys.

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        • fweasel
          master of some
          • Jul 2016
          • 4281

          #5
          You can certainly cut it down to a smaller diameter and that will reduce the load on the motor, not to mention make it a more appropriate size for a hull of that size.
          Vac-U-Tug Jr (13mph)

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          • Linewbie
            Senior Member
            • Apr 2017
            • 143

            #6
            Ive reviewed a few vids on how to cut them down, sharpen and balance, so I guess Ill be giving that a go one of these days. Everything still frozen over here in NY, so Ive got some time.

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