37" TFL Genesis single motor SAW build

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  • fweasel
    master of some
    • Jul 2016
    • 4285

    #46
    2018-08-12 09.09.10.jpg
    The boat ran great, very stable, and much better than expected for a first run. I need to limit the rudder travel even more than I currently have dialed in, and add some expo as well. No need for spin outs at the end of a run while the motor is freewheeling. There's a small cooling leak inside, ended up with a little water in the hull. Probably an ESC water barb, I didn't put zip ties on those. The hatch sealed great, no tape necessary. Flipped after I hit a wake from a pretty large V-bottom someone else was running nearby and my boat was upside down for a good 4 minutes before I got it back. No more water inside vs the first run with the cooling leak.

    Made a few passes on an 1814 prop, then switched to a 1716. The 1716 really unsettled the hull while getting on the throttle. Made the last few passes on a 1915 and it ran much better in terms of take off stability and straight line tracking. Overall things were a little warm, so my next step is to move the batteries back and get the COG closer to 30%. The strut is currently set level and about 1mm above even with the ride pads. I need to get a fiberglass hatch so that I can use GPS while tuning. Overall speed looks like high 70's, low 80's, but I wasn't able to determine any noticeable differences between props aside from ride characteristics without actual measurement. The shootout is next week. Hopefully my buddy doesn't crash the boat onto shore or under a dock. I'd definitely shed a tear for all the effort I put into it.
    Last edited by fweasel; 08-12-2018, 06:27 PM.
    Vac-U-Tug Jr (13mph)

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    • srislash
      Not there yet
      • Mar 2011
      • 7673

      #47
      I think you’d be correct in moving CG back with the dihedral hulls. My Daytona ran pretty well and is at 30%, my HPR is at 35-37% and does the drunken turtle thang.

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      • fweasel
        master of some
        • Jul 2016
        • 4285

        #48
        Originally posted by srislash
        I think you’d be correct in moving CG back with the dihedral hulls. My Daytona ran pretty well and is at 30%, my HPR is at 35-37% and does the drunken turtle thang.
        I'll give it a shot next Saturday.
        Vac-U-Tug Jr (13mph)

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        • Prodrvr
          Senior Member
          • Jul 2015
          • 701

          #49
          Originally posted by fweasel
          Installed the hatch bolts and neoprene water seal tonight. I love projects that don't require epoxy to cure.

          [ATTACH=CONFIG]158325[/ATTACH] [ATTACH=CONFIG]158324[/ATTACH]
          What thickness is that seal? Thx!

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          • fweasel
            master of some
            • Jul 2016
            • 4285

            #50
            Originally posted by Prodrvr
            What thickness is that seal? Thx!
            1/8" Thick x 1/4" Wide x 10'ft Foam Tape, got it on Amazon
            Vac-U-Tug Jr (13mph)

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            • Prodrvr
              Senior Member
              • Jul 2015
              • 701

              #51
              Originally posted by fweasel
              1/8" Thick x 1/4" Wide x 10'ft Foam Tape, got it on Amazon
              Thx boss

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              • Mike W
                Senior Member
                • May 2018
                • 348

                #52
                Originally posted by fweasel
                1/8" Thick x 1/4" Wide x 10'ft Foam Tape, got it on Amazon
                It was a bit difficult to find: https://www.amazon.com/dp/B07BRV9JPX/ref=biss_dp_t_asn
                Otto RC Marine

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                • Prodrvr
                  Senior Member
                  • Jul 2015
                  • 701

                  #53
                  I wound up buying it from ebay. Thanks guys. Now I have like 4 different sizes of this stuff sitting here now lol, but still waiting on the new hull to show up and I want to have the correct size of this stuff ready.

                  Comment

                  • fweasel
                    master of some
                    • Jul 2016
                    • 4285

                    #54
                    The boat ran like a champ during its first real day of running at the Mini Shootout. First handful of passes were in the mid 80's and once my buddy got comfortable with the boat, we pulled off three 90mph passes and won our electric class. Not too shabby for a single motor setup. There were a few impressive crashes and the only casualty was a slight bend in the steering linkage that we fixed with a trim adjustment until we got it back to the dock. I got a few atta boys from some experienced builders, which was almost more rewarding than the speed. I hope to find some time this week to see what kind of data I can pull off the ESC. I've never used the MGM software before. Might entertain a few 8S runs later this summer to see if I can break into the triple digits.

                    2018-08-17 12.27.41.jpg2018-08-18 10.17.52.jpg2018-08-19 10.23.28.jpg
                    Vac-U-Tug Jr (13mph)

                    Comment

                    • Prodrvr
                      Senior Member
                      • Jul 2015
                      • 701

                      #55
                      Very nice!

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                      • Prodrvr
                        Senior Member
                        • Jul 2015
                        • 701

                        #56
                        Very nice!

                        Comment

                        • srislash
                          Not there yet
                          • Mar 2011
                          • 7673

                          #57
                          Woot woot

                          Comment

                          • fweasel
                            master of some
                            • Jul 2016
                            • 4285

                            #58
                            Hello triple digit club! Good day at the lake. Haven't touched a boat since the mini shootout and I've been itching to get the Genesis out on 8S. I'ce only run it thus far on 6S. So, last night I greased up the flex last night, moved the battery straps (CoG) forward, and charged 2 sets of packs. Started out with a few 6S passes. Boat was stable but ran a little wetter with the weight pushed forward. Not as fast as the runs at the shootout. Let things cool off and strapped in a pair of 4S packs, made 3 passes before I cracked the drive dog and lost drive, but thankfully didn't loose any parts. The boat ran awesome. GPS display showed a peak of 102mph and the logger software showed 103mph. My friends son took video, might have a you tube video later. I can't believe the boat I built for a buddy to run with us at the shootout is now my fastest build. Almost wish it wasn't such a tank. I do believe this hull has more speed in it, but I'm at the limit with this motor voltage wise. Good problems to have.

                            2018-09-16 09.37.26.jpg 2018-09-16 09.37.13.jpg 2018-09-16 09.39.15.jpg 2018-09-16 12.12.56.jpg
                            Vac-U-Tug Jr (13mph)

                            Comment

                            • Prodrvr
                              Senior Member
                              • Jul 2015
                              • 701

                              #59
                              Nice!!

                              Comment

                              • srislash
                                Not there yet
                                • Mar 2011
                                • 7673

                                #60
                                Originally posted by fweasel
                                Hello triple digit club! Good day at the lake. Haven't touched a boat since the mini shootout and I've been itching to get the Genesis out on 8S. I'ce only run it thus far on 6S. So, last night I greased up the flex last night, moved the battery straps (CoG) forward, and charged 2 sets of packs. Started out with a few 6S passes. Boat was stable but ran a little wetter with the weight pushed forward. Not as fast as the runs at the shootout. Let things cool off and strapped in a pair of 4S packs, made 3 passes before I cracked the drive dog and lost drive, but thankfully didn't loose any parts. The boat ran awesome. GPS display showed a peak of 102mph and the logger software showed 103mph. My friends son took video, might have a you tube video later. I can't believe the boat I built for a buddy to run with us at the shootout is now my fastest build. Almost wish it wasn't such a tank. I do believe this hull has more speed in it, but I'm at the limit with this motor voltage wise. Good problems to have.

                                [ATTACH=CONFIG]161467[/ATTACH] [ATTACH=CONFIG]161468[/ATTACH] [ATTACH=CONFIG]161469[/ATTACH] [ATTACH=CONFIG]161470[/ATTACH]
                                Well done Ryan. You’ve come a long way this year. Betcha it feels good to hand to your pal.

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