New Builder: DYMotorshop 750mm Mono - High Deep V "Jack"... watch me learn!

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  • autolex
    Member
    • Sep 2021
    • 85

    #31
    I decided not to overlay the inlay onto the deck brace, I just wrapped the back in CK tape and epoxied it.

    Ran the (hurried and ugly) inlay in and put most of the stern hardware (except for the rudder/servo mount combo)

    Capture.jpg

    I ran the plumbing (starting with octura through hull bolt style pickups, may put in some glass-in angled inlet ones at some point) and discharge lines.

    I placed the receiver where i wanted it (real high on the stern plate) and put my antenna mount in.

    Still need to put the rudder/servo in, cut the flex shaft and place the battery trays. Bow is full of foam now too.
    MHZ Mystic 84 (BUILD) | DYMotorshop 750mm Mono (BUILD) | BlackJack 24 of Theseus (54mph) | ProBoat JetJam (toy) (BUILD) | Noodle Recovery Scaffolding (6.6mph)

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    • lilbigmacky
      Junior Member
      • May 2020
      • 26

      #32
      I like your cowl setup, do you still have to use hatch tape with that foam seal?

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      • autolex
        Member
        • Sep 2021
        • 85

        #33
        Cowl stayed watertight and i'd trust the bolts far more in a crash than tape anyway. works for me. :)

        2021-11-28.jpg

        Took it out and ran it around on 4S with a 42mm prop, was blowing the prop out of the water (realized after i'd puttered around a bit that the strut had some serious downward angle, corrected once home)

        Made a minor tweak to the flex tube (put a slightly longer piece of teflon liner in it), leveled it out and want to go run it again: this thing just ate ALL the waves, it was very choppy today!
        MHZ Mystic 84 (BUILD) | DYMotorshop 750mm Mono (BUILD) | BlackJack 24 of Theseus (54mph) | ProBoat JetJam (toy) (BUILD) | Noodle Recovery Scaffolding (6.6mph)

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        • Dirk Jan
          Senior Member
          • Jul 2010
          • 167

          #34
          Looking good in the sunshine. How do you like that SSS motor?

          Verstuurd vanaf mijn SM-G970F met Tapatalk

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          • autolex
            Member
            • Sep 2021
            • 85

            #35
            Originally posted by Dirk Jan View Post
            Looking good in the sunshine. How do you like that SSS motor?

            Verstuurd vanaf mijn SM-G970F met Tapatalk
            motor seems quite capable, planning a 6S Graphene run tomorrow with a 45mm prop, should be warmer but probably still windy near me. I'll get some pictures :)
            MHZ Mystic 84 (BUILD) | DYMotorshop 750mm Mono (BUILD) | BlackJack 24 of Theseus (54mph) | ProBoat JetJam (toy) (BUILD) | Noodle Recovery Scaffolding (6.6mph)

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            • autolex
              Member
              • Sep 2021
              • 85

              #36
              Well I'm getting closer but i've got a few issues to solve:

              1. was initially blowing the prop out of the water (the strut, which is length and pitch adjustable, was negligently pointing quite "down") - since remedied

              Before strut angle fix: I was blowing the prop out of the water once on plane, severely limited speed obviously

              2021-11-28.jpg

              Fixed this by just making it level with the tail of the bottom, so 0 degrees.

              Then I ran into another issue today:

              2. I think my strut is too long: I am still blowing the prop out of the water as the motor winds up (45mph now)...

              Additionally: I can replicate the issue by flooring the throttle while cruising on plane (the prop acts like it's not "catching")

              2021-11-30 (3).jpg 2021-11-30.jpeg 2021-11-30 (1).jpg 2021-11-30 (2).jpg

              Since TFL made this strut length adjustable, I think that I need to start shortening the strut and drive a bit.

              Are there guidelines for strut length vs hull length or width?

              Additional Data:

              My CoG is right at 1/3 from the stern, balanced neatly around the motor/batteries.
              My trim tabs are set "level" (so 0 degrees) and are about 1/16" above the hull edge.
              My turn fins are set to only touch the water when cornering, they don't touch when going straight
              Last edited by autolex; 11-30-2021, 10:45 PM.
              MHZ Mystic 84 (BUILD) | DYMotorshop 750mm Mono (BUILD) | BlackJack 24 of Theseus (54mph) | ProBoat JetJam (toy) (BUILD) | Noodle Recovery Scaffolding (6.6mph)

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              • autolex
                Member
                • Sep 2021
                • 85

                #37
                Well I lopped about 1/2" off my flex shaft and shortened the strut equally, I'll throw it back in the lake tomorrow if I get time.
                MHZ Mystic 84 (BUILD) | DYMotorshop 750mm Mono (BUILD) | BlackJack 24 of Theseus (54mph) | ProBoat JetJam (toy) (BUILD) | Noodle Recovery Scaffolding (6.6mph)

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                • autolex
                  Member
                  • Sep 2021
                  • 85

                  #38
                  The winter in saint louis is finally making me hopeful again.

                  This week: I'll dust off my new big boy 6S2P Graphene packs (6000mah each : WAY heavier) and put them all in the rear setting and work forward till it blows the prop out again.

                  and I think i'd like to setup a 4S session for my new OSE CNC 46mm Cleaver Prop

                  I'm going to figure this out soon!

                  Can't wait to get the deep-v back in Simpson Park Lake!

                  I did have a small winter project: an "OEM'ish" Brushless Jet-Jam!
                  Last edited by autolex; 09-12-2024, 03:55 PM. Reason: Better Pictures
                  MHZ Mystic 84 (BUILD) | DYMotorshop 750mm Mono (BUILD) | BlackJack 24 of Theseus (54mph) | ProBoat JetJam (toy) (BUILD) | Noodle Recovery Scaffolding (6.6mph)

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                  • autolex
                    Member
                    • Sep 2021
                    • 85

                    #39
                    Reviewing this thread today: i'll be putting some time in this spring into reworking and reinforcing the deck support, going to grind and probably re-overlay everything.

                    I've got a 40mm mount in mind that should be able to support my existing uprights and may go to a 4092 or longer.

                    The boat needs some love!
                    Last edited by autolex; 02-05-2024, 10:15 AM.
                    MHZ Mystic 84 (BUILD) | DYMotorshop 750mm Mono (BUILD) | BlackJack 24 of Theseus (54mph) | ProBoat JetJam (toy) (BUILD) | Noodle Recovery Scaffolding (6.6mph)

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                    • autolex
                      Member
                      • Sep 2021
                      • 85

                      #40
                      Cooling fixes have been on the schedule for a bit. I know monos need these RIGHT AT the centerline to work correctly.

                      Back to a regular old 43mm cnc blade this week with big heavy rear weighted 6S (x2) batteries this week to just start working on setup.

                      Got the boat off the shelf this week and want to grind and reinforce several small areas and probably chop the rudder a little bit, maybe paint with the new project someday!
                      Last edited by autolex; 09-19-2024, 02:16 PM.
                      MHZ Mystic 84 (BUILD) | DYMotorshop 750mm Mono (BUILD) | BlackJack 24 of Theseus (54mph) | ProBoat JetJam (toy) (BUILD) | Noodle Recovery Scaffolding (6.6mph)

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                      • fweasel
                        master of some
                        • Jul 2016
                        • 4335

                        #41
                        clean work.
                        Vac-U-Tug Jr (13mph)

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                        • autolex
                          Member
                          • Sep 2021
                          • 85

                          #42
                          Nuked my GPS on a blackjack-of-theseus kill run this week but the yellow 29er got some lake time. I really like this thing. It does what I want it to and truly runs like a mono should.
                          (2 x 3S Yowoo 100C 5000mah packs here in series. I have some ovonic 100C 6000mah 3S packs that I may move over to this hull)

                          MHZ Mystic 84 (BUILD) | DYMotorshop 750mm Mono (BUILD) | BlackJack 24 of Theseus (54mph) | ProBoat JetJam (toy) (BUILD) | Noodle Recovery Scaffolding (6.6mph)

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