[Question] Prop Selection Help
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Prop Selection Help

  1. #1
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    Default Prop Selection Help

    I have a 1985 Rick Bitz runner botton V-drive that I have been restoring over the past three years, now that I am done, I need to select a prop and need some help from the experts. I need to slect a 2-blade prop and have an attached picture and some data below.

    Boat weight: 2040 lbs. w/fuel
    V-drive: Casale 10 Degree In & Out ( no Trans)
    Gear Ratio: 1.29 w/ whirlaway
    Prop Shaft: 1 inch
    Motor: Blown 540 running 8lbs. boost and making est. 1000hp
    Boat use: mostly lake use would like tobe in the mid to high top end

    I was thinking about as a starting point a prop 11.5 X 15, but will rely on your vast experience before ordering one. If you need any other information I will gladly get it to you.

    Thanks your help will be greatly appreciated.

    Dale Simpkins "Cowboys Toy"
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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  3. #2
    Senior Member the bandit's Avatar
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    Default prop

    Dale nice lookin ship! Welcome to the zoo! Your going to get lots of opinions here i use harold kindsvauter [559 299 2328] one smart man & easy to deal with! If i can help feel free ta call me! Andy 530 633 9055

  4. #3
    Senior Member VDRIVERACING's Avatar
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    Ditto on Harold... excellent information and fast turn around. He's located in central CA, and I mail my props back and forth no problem.

  5. #4
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    Thanks for the info,Vdriveracing and bandit! I will contact Harold tomorrow and see what he comes up with. With any luck I still may get this thing in the water before winter sets in on the east side of the world. My plans are to put her in the water this weekend to check for leaks and run the motor and engage the gear box without the prop on and then go for there. The restoration took a long time and 45K investment but I am close now, everything in the boat was replaced with new parts, new motor, rebuilt gearbox and not to mention the 10k paint job.

    Again thanks for the help

    Cowboys Toy

  6. #5
    ptc
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    Very Nice Boat!... how about some more pics???

    Another Harold supporter here too, he did my prop too (which I figured was gonna be a paper weight!) But its a beaut!

  7. #6
    Liquid Louie flatcrzy's Avatar
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    Nice Boat!!!! What size Runner Bottom is that?
    Don't piss down my back and tell me it's raining!

  8. #7
    Distinguished Member David 519's Avatar
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    Nice looking boat. The runners looks pretty deep, what size are they? You'll get lots of ideas, but pick a good prop guy that's gonna work with you since you'll very likely have to mess around with it once you start running the boat. 11 1/2 dia x 15 pitch is kinda old school. Though there are a lot of exceptions, most runner bottoms like from 10 7/8"-11 1/4" diameter and 16 pitch. I've used most of the the big name mfg's and all are pretty good. Recently I've had the best luck with Grose Racing props((209) 368-8308) . A bit more $$, but a CNC'ed solid forging rather than welded ear. Grose props also tend to take less gear than other props I've used but you'll have to test to figure out what your combo likes...
    Good luck.
    Quote Originally Posted by gn7 View Post
    ....... David 519 is 100% correct........

    Quote Originally Posted by fuelinmyveins82 View Post
    .....I think people forget that racing is supposed to fun. Losing shouldn't be discouraging it should motivate you work on your pile to make it faster.....

  9. #8
    Senior Member Retired Flatbottom Racer's Avatar
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    Ditto what David 519 said! I love my Grose propellor and Joey got it right the first time. Great guy to work with.

  10. #9
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    Quote Originally Posted by David 519 View Post
    Nice looking boat. The runners looks pretty deep, what size are they? You'll get lots of ideas, but pick a good prop guy that's gonna work with you since you'll very likely have to mess around with it once you start running the boat. 11 1/2 dia x 15 pitch is kinda old school. Though there are a lot of exceptions, most runner bottoms like from 10 7/8"-11 1/4" diameter and 16 pitch. I've used most of the the big name mfg's and all are pretty good. Recently I've had the best luck with Grose Racing props((209) 368-8308) . A bit more $$, but a CNC'ed solid forging rather than welded ear. Grose props also tend to take less gear than other props I've used but you'll have to test to figure out what your combo likes...
    Good luck.
    The runners are deep,2 inch! I have been a bit concerned about the handling characteristics of the hull at high speed. I have talked with Harold Kindsvauter today and have decided to go with an 11.25 X 16 prop. Once I can get the boat in the water to do some test and tune, I will see if I need to readjust the prop. I had thought about the CNC prop but will wait until I get some data and zero in on what I will need to load the motor properly and then put out the big dollars for one of those props. With the pending hurricane coming my way this weekend, my plans may be push back a couple of days.

  11. #10
    Senior Member Reservoir Dog's Avatar
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    X3 on the grosse props, IMO fastest prop u can get.

  12. #11
    Distinguished Member David 519's Avatar
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    Quote Originally Posted by Cowboys Toy View Post
    The runners are deep,2 inch! I have been a bit concerned about the handling characteristics of the hull at high speed.......
    Never ran a 2" runner, but friends that have say they get a bit spooky after 100 MPH or so... good luck.
    Quote Originally Posted by gn7 View Post
    ....... David 519 is 100% correct........

    Quote Originally Posted by fuelinmyveins82 View Post
    .....I think people forget that racing is supposed to fun. Losing shouldn't be discouraging it should motivate you work on your pile to make it faster.....

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