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  1. #21
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    May 2018
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    I don’t think the 1.5 trans has any different prop shaft angle or length than the 1.76 trans.

    The newer Supra 400/450’s have used 16” props with plenty of hull clearance for a few years.


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

  2. #22
    Join Date
    Jun 2012
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    Crosby TX
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    Default

    It came from factory with 16x13.9


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  3. #23
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    May 2018
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    Quote Originally Posted by Cactus371 View Post
    It came from factory with 16x13.9


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    Curious why you dropped down to the 16x12.5. I can’t imagine you were lacking power with the 575 and 16x13.9.


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

  4. #24
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    Jun 2012
    Location
    Crosby TX
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    Quote Originally Posted by larry_arizona View Post
    Curious why you dropped down to the 16x12.5. I can’t imagine you were lacking power with the 575 and 16x13.9.


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    When I had 10 people and full ballast it was slow to get to 12 when surfing. If I dropped a little ballast it did ok. But with the 12.5 I don’t have any problem


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  5. #25
    Join Date
    Oct 2018
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    Hockley, Tx
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    Default

    Quote Originally Posted by larry_arizona View Post
    I don’t think the 1.5 trans has any different prop shaft angle or length than the 1.76 trans.

    The newer Supra 400/450’s have used 16” props with plenty of hull clearance for a few years.


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    That is interesting. I wonder why it wasn't until Moombas went to the 1.76 that they went with a 15.5" diameter prop. I know in 2019 they all had 15" diameter props with the 1.5 but if you ordered the 450 it came with the 1.76 trans and a 15.5" (at least on the Makai). When did Supra make the jump to a 16" if it wasn't in correlation with the change to the 1.76?
    2019 Makai
    Raptor 450 w/ 1.76 Trans
    WakeMakers 1350s in the rear & 1K in Lead

  6. #26
    Join Date
    May 2018
    Posts
    4,920

    Default Raptor 575 prop options

    Quote Originally Posted by TXSurf4 View Post
    That is interesting. I wonder why it wasn't until Moombas went to the 1.76 that they went with a 15.5" diameter prop. I know in 2019 they all had 15" diameter props with the 1.5 but if you ordered the 450 it came with the 1.76 trans and a 15.5" (at least on the Makai). When did Supra make the jump to a 16" if it wasn't in correlation with the change to the 1.76?
    I believe Supras moved to the 16” prop in direct correlation to the 1.76 trans. I think the 575 stuck with the 15” for awhile.

    But the prop clearance is there, I think a 16.5” would probably fit.

    For some reason, there is less prop clearance on the Moombas.


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    Last edited by larry_arizona; 09-28-2021 at 10:00 AM.
    2021 Supra SA 400
    2018 Supra SA 400 (SOLD)
    Michigan

  7. #27
    Join Date
    Oct 2018
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    Hockley, Tx
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    Default

    Quote Originally Posted by larry_arizona View Post
    I believe Supras moved to the 16” prop in direct correlation to the 1.76 trans. I think the 575 stuck with the 15” for awhile.

    But the prop clearance is there, I think a 16.5” would probably fit.

    For some reason, there is less prop clearance on the Moombas.


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    Ya IIRC the 575 just went to the 1.7 trans this year. I wonder why SC didn't run 16" props stock back then if they had the clearance. I guess the only reason the Supras are able to run the 16" and the Moomba can't has to do with the hull design around the prop.
    2019 Makai
    Raptor 450 w/ 1.76 Trans
    WakeMakers 1350s in the rear & 1K in Lead

  8. #28
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    May 2018
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    Quote Originally Posted by TXSurf4 View Post
    Ya IIRC the 575 just went to the 1.7 trans this year. I wonder why SC didn't run 16" props stock back then if they had the clearance. I guess the only reason the Supras are able to run the 16" and the Moomba can't has to do with the hull design around the prop.
    My guess is when Supra codeveloped the 16x13.9 with acme, they tested it on the 575/1.5 and added it to the builder.

    No question a 575/1.5 can turn that prop and OMG the 575/1.7 will be beast mode.


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

  9. #29
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    Oct 2018
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    Quote Originally Posted by larry_arizona View Post
    OMG the 575/1.7 will be beast mode.


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    I couldn't agree more!
    2019 Makai
    Raptor 450 w/ 1.76 Trans
    WakeMakers 1350s in the rear & 1K in Lead

  10. #30

    Default

    I am going to order the 16x13.9 prop and see how it runs on my 2018 575 with the 1.5 tranny.

    Should I be concerned for any gelcoat burn is the question?
    2018 Supra SL550 with 850lbs of lead wake
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    2016 Moomba Mojo Surf Edition (Sold)
    2017 Ford F250 Super Duty (Sold)
    2019 Ford F250 Super Duty (Sold)
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