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  1. #1
    Join Date
    Aug 2020
    Location
    Middle Tennessee
    Posts
    736

    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
    4,916

    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.

    Sent from my iPhone using Tapatalk
    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
    315

    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
    Wakemakers “Exact Fit” Bags + Lead = 4,700 ballast
    Audio by Wetsounds, MTX, JL Audio, Clarion
    15 X 13.00 ACME prop

  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
    736

    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
    26

    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.
    2022 Supra SL550 (current)
    2019 Adonia (75' houseboat at Lake Powell - current)
    2021 Tige Z3 (past)
    2020 SL400 (past)
    Idaho

  7. #7
    Join Date
    May 2018
    Posts
    4,916

    Default

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


    Sent from my iPhone using Tapatalk
    2021 Supra SA 400
    2018 Supra SA 400 (SOLD)
    Michigan

  8. #8
    Join Date
    Aug 2020
    Location
    Middle Tennessee
    Posts
    736

    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
    26

    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!
    2022 Supra SL550 (current)
    2019 Adonia (75' houseboat at Lake Powell - current)
    2021 Tige Z3 (past)
    2020 SL400 (past)
    Idaho

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