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  1. #1
    Join Date
    Aug 2020
    Location
    Middle Tennessee
    Posts
    546

    Default Anybody put a 17" prop on an 18+ SA?

    I've seen several go for cheap (17x14) lately.
    I measured and it looks like there would still be plenty of clearance, just curious if anyone's done it.
    2020 Supra SA

  2. #2
    Join Date
    May 2018
    Posts
    3,728

    Default Anybody put a 17" prop on an 18+ SA?

    I measured my prop clearance on a 21SA. 16 prop gives 1.22 clearance to hull.

    So a 17 physically would fit, however I am not sure what the minimum prop to hull clearance spec is.


    I have read 15% of prop diameter is recommended clearance to hull, but 1.22 already violates that.

    With a 17 prop that should drop to .72 clearance. Some guys on MaliBU crew run as close as .50 and claim no gel burn.

    17x14 is what Nautique runs on G boats with 2.0-1 trans. Not sure how well a 1.76-1 would pull it.

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    Last edited by larry_arizona; 05-07-2021 at 06:00 PM.
    2021 Supra SA 400
    2018 Supra SA 400 (SOLD)
    Michigan

  3. #3
    Join Date
    Apr 2020
    Location
    Prince George Canada
    Posts
    170

    Default

    ACME reccomends a minimum of 3/4” clearance between the prop and the closest point on the hull.
    2020 Moomba Mojo
    2008 Mastercraft Prostar 197 40th Anniversary
    Owner Ness Lake Watersports

  4. #4
    Join Date
    Dec 2016
    Posts
    128

    Default

    I had 5/8" clearance on one of my old boats/props. Never had an issue.

    I ran a 17x14 on my old Tige RZX3. It was barley adequate when running heavy at 4300 feet. That boat had the 2:1 transmission and 440.

    My current boat, a Tige RZX2, I run a 17x14 and a 17x17. I swap them out depending on where I'm going. In reality I need one prop, right in the middle and I'd leave it on all the time. This boat also has the 440 and 2:1. I picked up the 17x17 because I ran across it in a local classified ad for cheap.

    Buy your prop from Nettles in Texas. They are awesome about letting you test props and swapping out as needed.

  5. #5
    Join Date
    Aug 2020
    Location
    Middle Tennessee
    Posts
    546

    Default

    Yeah I ram waaaay closer than this on my tige, 1/2" or so with no issues.
    I'm just wondering if the 400 with the 1.76 will spin a 17x14
    2020 Supra SA

  6. #6
    Join Date
    Jun 2020
    Posts
    7

    Default

    I think the real problem you'll run into is finding a 17" prop that goes on a 1-1/8" shaft. I think 16" is the largest diameter for a 1-1/8" shaft; once you go bigger they are all pretty much designed for a 1-1/4" shaft.
    2020 SL400
    Idaho

  7. #7
    Join Date
    May 2018
    Posts
    3,728

    Default

    Looking forward to using the 16x13.9 that Supra and Acme worked on specifically for the 1.76 trans.


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    2021 Supra SA 400
    2018 Supra SA 400 (SOLD)
    Michigan

  8. #8
    Join Date
    Aug 2020
    Location
    Middle Tennessee
    Posts
    546

    Default

    Quote Originally Posted by mmmkay View Post
    I think the real problem you'll run into is finding a 17" prop that goes on a 1-1/8" shaft. I think 16" is the largest diameter for a 1-1/8" shaft; once you go bigger they are all pretty much designed for a 1-1/4" shaft.
    Yep, they make adapters but not sure if it's worth the effort.
    I made an offer on one so we'll see if he'll take it.
    2020 Supra SA

  9. #9
    Join Date
    Jun 2020
    Posts
    7

    Default

    Quote Originally Posted by SONIC View Post
    Yep, they make adapters but not sure if it's worth the effort.
    I made an offer on one so we'll see if he'll take it.
    Oh, didn't know that. I learned something new, thanks!
    2020 SL400
    Idaho

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