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Thread: Sniper 45" Driveshaft height above keel

  1. #1
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    Default Sniper 45" Driveshaft height above keel

    Finally got a Sniper and am ready to start mounting parts. This is my first mono and I'm not sure how high the shaft centerline should be located above the keel. This will be a 8-10S T-mono local club and maybe regional race boat.

    Thanks!

    Mike

  2. #2
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    Hey Mike,
    In this case, I do a flooded stuffing assembly and a strut rather than a stinger.
    I’d allow for 1/4 to 3/4” height adjustment, to account for different prop size and/or water conditions.
    Let us know if you need some explanation or photos.
    "Look good doin' it"
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  3. #3
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    Wow that much adjustment? A little late for that setup I have a stinger already...maybe I'll return it. I have seen the flood tube and strut setup and understand how it works.

    But please provide further explanation on how height is adjusted for water conditions and any photos. I searched here quite a bit and most photos don't show this in detail and there is little discussion on the subject.

  4. #4
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    I think this much adjustment is the max and if you don’t have experience with a particular hull, this allows for a wide range of props and finding out how loose/wet you feel most comfortable driving. Some boats like the transom deeper than others.

    I have poked fun at Jim V when he would bring out a boat with a stinger and he couldn’t go full throttle due to blow over risk.

    Stingers are sexier... but only while on the shelf. I’d much rather have the ability to raise the prop without remounting a stinger, especially at a race.
    "Look good doin' it"
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  5. #5
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    Not too long ago someone made a comment about a percentage measurement, from the bottom of the keel to the center of the drive shaft, for a starting position, to drill the shaft hole in the transom.

    I can not find it on the forum, and I forget who made the comment.

    Larry
    Last edited by TRUCKPULL; 02-03-2019 at 09:22 AM.
    Past NAMBA- P Mono -1 Mile Race Record holder
    Past NAMBA- P Sport -1 Mile Race Record holder
    Bump & Grind Racing Props -We Like Em Smooth & Wet

  6. #6
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    Quote Originally Posted by TRUCKPULL View Post
    Not too long ago someone made a comment about a percentage measurement, from the bottom of the keel to the center of the drive shaft, for a starting position, to drill the shaft hole in the transom.

    I can not find it one the forum, and I forget who made the comment.

    Larry
    That reminds me of a movie... don’t remember the name of the lead actor or the name of the movie... but it was great!
    Larry, that cracked me up!! I’m not as young as I thought we were...
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    Jesse

    I was hoping someone else remembered that comment, and could repost it here.

    It also had something to do with percentage of prop blade below the keel.

    Larry
    Last edited by TRUCKPULL; 09-22-2019 at 04:24 PM.
    Past NAMBA- P Mono -1 Mile Race Record holder
    Past NAMBA- P Sport -1 Mile Race Record holder
    Bump & Grind Racing Props -We Like Em Smooth & Wet

  8. #8
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    lmao

  9. #9
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    Quote Originally Posted by TRUCKPULL View Post
    Jesse

    I was hoping someone else remembered that comment, and could repost it here.

    It also hade something to do with percentage of prop blade below the keel.

    Larry
    Larry, I was just having fun..
    I hope to see the equation as well; I’m sure it could be a good starting point for stinger users.
    "Look good doin' it"
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  10. #10
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    Quote Originally Posted by Jesse J View Post
    stinger users

  11. #11
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    Quote Originally Posted by Jesse J View Post
    I think this much adjustment is the max and if you don’t have experience with a particular hull, this allows for a wide range of props and finding out how loose/wet you feel most comfortable driving. Some boats like the transom deeper than others.

    I have poked fun at Jim V when he would bring out a boat with a stinger and he couldn’t go full throttle due to blow over risk.

    Stingers are sexier... but only while on the shelf. I’d much rather have the ability to raise the prop without remounting a stinger, especially at a race.
    Jesse is right about that. I flooded tube and conventional strut is always the best arrangement on a mono. Certainly more exotic fabrication is involved, but the adjustability is priceless.

  12. #12
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    Quote Originally Posted by jevmax View Post
    Jesse is right about that. I flooded tube and conventional strut is always the best arrangement on a mono. Certainly more exotic fabrication is involved, but the adjustability is priceless.
    OK I’m sold on the flood tube and exotic fabrication now, but I’m keeping the stinger - just had an epiphany on adding adjustability!!

  13. #13
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    Quote Originally Posted by Mike W View Post
    OK I’m sold on the flood tube and exotic fabrication now, but I’m keeping the stinger - just had an epiphany on adding adjustability!!
    You can likely capitalize on that epiphany Mike. You’ve certainly got the skills!

  14. #14
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    It is done. I had to try the TFL adjustable stinger so machined a jackplate to allow adjustment with the flood tube. It spaces out the stinger just enough for captive nuts in channels behind.
    Attached Images Attached Images

  15. #15
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    Quote Originally Posted by Mike W View Post
    It is done. I had to try the TFL adjustable stinger so machined a jackplate to allow adjustment with the flood tube. It spaces out the stinger just enough for captive nuts in channels behind.
    Ingenious Mike! You da man.

  16. #16
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    Wow! Turned out great! Can't wait to see it streaking across the lake.

  17. #17
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    Slick looking build. Love that adjustable stinger. What size motor and kV did you end up with?
    Vac-U-Tug Jr (13mph)

  18. #18
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    That jack-plate is a work of art.

    Larry
    Past NAMBA- P Mono -1 Mile Race Record holder
    Past NAMBA- P Sport -1 Mile Race Record holder
    Bump & Grind Racing Props -We Like Em Smooth & Wet

  19. #19
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    awesome build and nice looking boat too. . .clean and mean. . .great job

  20. #20
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    Woah woah woah wait a cotton pickin minute... is that stinger adjustable from your transmitter???
    Tremendous job, wish I could see in person.
    You gonna race at nats?
    "Look good doin' it"
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  21. #21
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    Quote Originally Posted by fweasel View Post
    Slick looking build. Love that adjustable stinger. What size motor and kV did you end up with?
    Its a 5650 1000KV I picked up here. Gonna try an X450.

    Quote Originally Posted by TRUCKPULL View Post
    That jack-plate is a work of art.
    Larry
    Fairly simple really. I had it machined from my sketch by Jeremy Moore.

    Quote Originally Posted by Jesse J View Post
    Woah woah woah wait a cotton pickin minute... is that stinger adjustable from your transmitter???
    Tremendous job, wish I could see in person.
    You gonna race at nats?
    Nice piece for $45 had to try one: https://www.offshoreelectrics.com/pr...rod=tfl-503b90
    Will try a regional race someday!

  22. #22
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    Very nice!
    Steven Vaccaro

    Where Racing on a Budget is a Reality!

  23. #23
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    This boat is running great! Surprised it does 73mph for a full charge without heat issues on the little TP5650. It likes the X455 best, and drive trim is mixed with throttle to trim down slightly at top speed.

  24. #24
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    That's just awesome. Nice job.

  25. #25
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    Sick looking boat. Love what you did with the stinger.
    Cheetah, Super Rio, (Mod) Starship (Mod and sold),

  26. #26
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    Thanks!! Love this boat so happy to have one.

  27. #27
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  28. #28
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    Runs awesome. I forgot how cool that sting turned out.
    Vac-U-Tug Jr (13mph)

  29. #29
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    Solid run. .I remember commenting on this boat too! So runs great and looks awesome, what more could you ask for.> > > >so how much do you want for it? LOL

  30. #30
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    This is Batman' s boat !

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