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  1. #1
    Join Date
    May 2018
    Posts
    4,198

    Default 400 with 1.76 transmission prop choices

    I know the prop options in 2020 for the 400/1.76 was a 16x17 and 16x15, looks like there is a new option 16x13.9

    Anyone running the ACME 3591 16x13.9? Sounds like an absolute stump puller.


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

  2. #2
    Join Date
    Jun 2012
    Location
    Crosby TX
    Posts
    257

    Default

    Quote Originally Posted by larry_arizona View Post
    I know the prop options in 2020 for the 400/1.76 was a 16x17 and 16x15, looks like there is a new option 16x13.9

    Anyone running the ACME 3591 16x13.9? Sounds like an absolute stump puller.


    Sent from my iPhone using Tapatalk
    Thatís what Iím running on my SE


    Sent from my iPhone using Tapatalk

  3. #3
    Join Date
    Aug 2020
    Location
    Middle Tennessee
    Posts
    642

    Default

    I run the 16x15 on my 400 with 1.76 and it does fine fully loaded and tops out at 38.

    The 13.9 assuming the same prop slip would only drop the top speed to 35 and would likely be significantly torquier down low.
    Seems like a good option to me.
    2020 Supra SA

  4. #4
    Join Date
    May 2018
    Posts
    4,198

    Default 400 with 1.76 transmission prop choices

    35 top speed is plenty, I will order the 16x13.9

    The fastest I go is wakeboard speeds 22-23mph


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

  5. #5
    Join Date
    Aug 2017
    Posts
    947

    Default

    Quote Originally Posted by larry_arizona View Post
    I know the prop options in 2020 for the 400/1.76 was a 16x17 and 16x15, looks like there is a new option 16x13.9

    Anyone running the ACME 3591 16x13.9? Sounds like an absolute stump puller.


    Sent from my iPhone using Tapatalk
    I have the 16x15, and have considered trying the 16x17. There are no issues launching, but the rpms are a little higher at surf and wakeboard speeds. Anything taller would be nuts.
    2019 Supra SL450

  6. #6
    Join Date
    May 2018
    Posts
    4,198

    Default

    Quote Originally Posted by Shoebox View Post
    I have the 16x15, and have considered trying the 16x17. There are no issues launching, but the rpms are a little higher at surf and wakeboard speeds. Anything taller would be nuts.
    What RPM does the 16x15 give at wake and surf speeds?


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

  7. #7
    Join Date
    Aug 2017
    Posts
    947

    Default

    Quote Originally Posted by larry_arizona View Post
    What RPM does the 16x15 give at wake and surf speeds?


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    Full ballast surfing 11.2-11.4 I'm about 3700-3800 rpm, with lead and maybe a little water ballast at 22 is about the same. I do have the 450 though.
    2019 Supra SL450

  8. #8
    Join Date
    Aug 2020
    Location
    Middle Tennessee
    Posts
    642

    Default

    @Shoebox what's your drive ratio?

    I'm 1.76 : 1 and run about 3200-3400 at surf speed on the 16x15 prop full ballast
    2020 Supra SA

  9. #9
    Join Date
    Aug 2011
    Location
    Commerce Lake, MI
    Posts
    2,146

    Default

    Thatís nice and low for Rpmís


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    2017 Moomba Craz

  10. #10
    Join Date
    May 2018
    Posts
    4,198

    Default

    Quote Originally Posted by SONIC View Post
    @Shoebox what's your drive ratio?

    I'm 1.76 : 1 and run about 3200-3400 at surf speed on the 16x15 prop full ballast
    Curious how much RPM would increase with the 16x13.9?


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

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