Kbb 34" mono build

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  • kfxguy
    Fast Electric Addict!
    • Oct 2013
    • 8750

    #211
    Originally posted by srislash View Post
    Very interesting Travis. Kind of a quicker/shorter run on that last one. Are you going to try a touch smaller prop again to see what it does or just a fresh set of batteries?

    You know I am paying attention and learning from your logs for my LMT twin setup.
    Thanks
    Actually it's hard to tell because that's 18 minutes condensed together on one page but the last run was my longest as I was able to hang on to it longer. I made quite a bit of runs, some were right back to back and they are jumbled together on that page. I only had my son video three of the runs. I wasn't worried with it because I was just trying to get it lined out. I did up a m447 tonight (which may end up on the Daytona) but I'll be able to try something with a little less pitch and see how it likes it.
    32" carbon rivercat single 4s 102mph, 27” mini Rivercat 92mph, kbb34 91mph, jessej micro cat(too fast) was

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    • srislash
      Not there yet
      • Mar 2011
      • 7651

      #212
      Ahh, my bad. I blew up the logs pic and thought it was measured in secs not mins there. I have had good luck pitching down, my DF 35 just could not get stable with a X/M6 series on it. All kinds of rudeness, not all the time but if anything went off kilter off it went(or down it went). Same with the Pursuit. The M5's arte fine though.

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      • Make-a-Wake
        FE Rules!
        • Nov 2009
        • 5554

        #213
        Hey Travis............just thought of something. On my 39" Mono (6s2p 1717) I tried a bunch of props to squeeze out the best speed...............and overall running/handling, went thru x445/x447/x450/x645......................and the best one was................drum roll................an x548! Yep, the little known 548 was the best, perfect combo of pitch and diameter.
        NEED PARALLEL CONNECTORS?? QUALITY 5.5MM, 8MM, 8 AND 10 AWG, GET THEM HERE: http://forums.offshoreelectrics.com/...est!&highlight=

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        • kfxguy
          Fast Electric Addict!
          • Oct 2013
          • 8750

          #214
          Went run again. Was prepared, had three sets of batteries this time. Flipped it and bent the rudder on about the third pass. O well. Got the Daytona out at an attempt to hit 80 and that didn't hapoen either. Water wasn't flowing out the outlet. Must have got some dirt stuck in it. I tried driving around in circles for a bit and no dice. Didn't want to chance it so I packed it up too. Sometimes I just wanna pack it all up and sell it all except one or two boats and be done with it. Ugh. So now I gotta get another rudder. Ain't no straightening this one. Blah.
          32" carbon rivercat single 4s 102mph, 27” mini Rivercat 92mph, kbb34 91mph, jessej micro cat(too fast) was

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          • kfxguy
            Fast Electric Addict!
            • Oct 2013
            • 8750

            #215
            Btw, on 6s with the smaller prop it only went 64mph. Put the m447 I did last night on and it went 65. Wonder if longer trim tabs will help with the chine walk? That's why it flipped. I tried to stay in it and it flipped and hit hard. Landed right side up tho.
            32" carbon rivercat single 4s 102mph, 27” mini Rivercat 92mph, kbb34 91mph, jessej micro cat(too fast) was

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            • flraptor07
              Fast Electric Addict!
              • Aug 2013
              • 2451

              #216
              Originally posted by kfxguy View Post
              Btw, on 6s with the smaller prop it only went 64mph. Put the m447 I did last night on and it went 65. Wonder if longer trim tabs will help with the chine walk? That's why it flipped. I tried to stay in it and it flipped and hit hard. Landed right side up tho.
              That's 10mph under your fastest and it only just started to chine walk then, wonder why it's chine walking at 65 now.

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              • kfxguy
                Fast Electric Addict!
                • Oct 2013
                • 8750

                #217
                Originally posted by flraptor07 View Post
                That's 10mph under your fastest and it only just started to chine walk then, wonder why it's chine walking at 65 now.
                I dunno. I didn't change anything. Guess I gotta figure that out. I'm very agitated right about now. I've got some cheap, short trim tabs on it. Might help if I get some longer ones. I dunno.

                32" carbon rivercat single 4s 102mph, 27” mini Rivercat 92mph, kbb34 91mph, jessej micro cat(too fast) was

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                • Luck as a Constant
                  Make Total Destroy
                  • Mar 2014
                  • 1952

                  #218
                  Patience Travis. Patience


                  Sent from my iPhone using Tapatalk
                  There's a hole at the center of earth where the rest of the world sinks but i stand still...

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                  • Luck as a Constant
                    Make Total Destroy
                    • Mar 2014
                    • 1952

                    #219
                    I've actually found that turn find help stop chine walk.
                    It seems that at speed, if they're just above the water, when the rocking starts, the fin will touch and kinda push it back.
                    Jmtc
                    Kinda like training wheels


                    Sent from my iPhone using Tapatalk
                    There's a hole at the center of earth where the rest of the world sinks but i stand still...

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                    • kfxguy
                      Fast Electric Addict!
                      • Oct 2013
                      • 8750

                      #220
                      Originally posted by Luck as a Constant View Post
                      I've actually found that turn find help stop chine walk.
                      It seems that at speed, if they're just above the water, when the rocking starts, the fin will touch and kinda push it back.
                      Jmtc
                      Kinda like training wheels


                      Sent from my iPhone using Tapatalk
                      I'll put them on....
                      32" carbon rivercat single 4s 102mph, 27” mini Rivercat 92mph, kbb34 91mph, jessej micro cat(too fast) was

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                      • flraptor07
                        Fast Electric Addict!
                        • Aug 2013
                        • 2451

                        #221
                        Travis, how long was that rudder?

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                        • kfxguy
                          Fast Electric Addict!
                          • Oct 2013
                          • 8750

                          #222
                          O crap. I just remembered I did do something. I rounded the bottom of the rudder this morning. Hmmm. Just a very little tho. Hard to think that would make it chine walk earlier. I won't touch the other rudder. If someone has a rudder like this they would sell....



                          32" carbon rivercat single 4s 102mph, 27” mini Rivercat 92mph, kbb34 91mph, jessej micro cat(too fast) was

                          Comment

                          • kfxguy
                            Fast Electric Addict!
                            • Oct 2013
                            • 8750

                            #223
                            Originally posted by flraptor07 View Post
                            Travis, how long was that rudder?
                            4" according to the description
                            32" carbon rivercat single 4s 102mph, 27” mini Rivercat 92mph, kbb34 91mph, jessej micro cat(too fast) was

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                            • Spartanator
                              Fast Electric Addict!
                              • Oct 2013
                              • 1060

                              #224
                              Ouch on the rudder. I am not sure what Keith has rated the hull for (power or speed wise) so I cannot say your pushing the limits of it but it's hard to get hulls this "small" tuned in. I have never ran "single" drive boats (the real ones) so I don't know much about it chine walk. I bet you if you bring that strut up a tad it will help, you may lose speed but at least it doesn't chine walk. I am going to get some long tabs for mine (30mmx50mm). I will be getting these: http://www.offshoreelectrics.com/pro...prod=ose-83020

                              When we did poker runs the smaller (36' and below) boats with longer tabs always seemed to handle better. If your getting irritated with it just shelf it for a while, there was a point where I left OffShore running for a while (a month) but I missed hearing the motors and 100+ on a hot day.


                              Originally posted by flraptor07 View Post
                              Travis, how long was that rudder?
                              What length rudder would you use if you were doing the same build as Travis? I am curious as I have one of these hulls on the way. Should be here Monday....
                              Last edited by Spartanator; 04-04-2015, 09:27 PM.
                              Why are you bothering me? I want to see your boat!
                              32" CF Rivercat--- built by "kfxguy" (SOLD)

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                              • flraptor07
                                Fast Electric Addict!
                                • Aug 2013
                                • 2451

                                #225
                                Originally posted by kfxguy View Post
                                4" according to the description
                                I think I'd take about half the distance to the pickup off, make it about 3 1/2"

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