H&M Intruder twin build

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  • srislash
    Not there yet
    • Mar 2011
    • 7651

    #31
    How is she coming bud?

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    • tlandauer
      Fast Electric Addict!
      • Apr 2011
      • 5660

      #32
      Originally posted by srislash View Post
      How is she coming bud?
      All work, no play!
      Thanks for asking, need to drill the tear drop holes for the pick up, but didn't want to screw up so waiting to have quality time.
      Too many boats, not enough time...

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      • srislash
        Not there yet
        • Mar 2011
        • 7651

        #33
        Originally posted by tlandauer View Post
        All work, no play!
        Thanks for asking, need to drill the tear drop holes for the pick up, but didn't want to screw up so waiting to have quality time.
        Oh, I hear you on that one. Nice thing about these is that they can wait and they don't take up the driveway up on blocks or anything(I used to play with cars/4x4's).

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        • tlandauer
          Fast Electric Addict!
          • Apr 2011
          • 5660

          #34
          Got a bit of time today ( yesterday )
          Shawn, I have to thank you for your help and especially with the idea of the water pick ups.
          I wanted individual cooling for the two ESCs but the TFL dual p/u rudder not only is too long and wide, but it is ugly, IMO anyway.
          My next move was going to install the ride pad p/u, but the hull is somewhat small and I did not want to make a square opening on the pads and then find out some nasty surprises later. At this point I asked Shawn what would be the logical step and he pointed to a couple of his builds and some other ideas from other people. Here was my "practice run" on two different sizes, 5/32 and 3/16. This is nothing new for you experienced guys, but was a new lesson for me !

          DSCN7341.jpg DSCN7344.jpg DSCN7350.jpgDSCN7358.jpg DSCN7357.jpg
          I settled for 5/32 because i can bend the brass tube by inserting a discarded .150 cable. I will step up to 3/16 once the p/u is inside the hull.
          Too many boats, not enough time...

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          • tlandauer
            Fast Electric Addict!
            • Apr 2011
            • 5660

            #35
            I epoxied some 3mm thick G-10 FG plate for support inside:DSCN7347.jpg , here is a mock up:DSCN7351.jpgDSCN7354.jpg
            Due to the low over hang and my unwillingness to cut up the hull, the standard servo in its mount would mean that I have to bend the rudder push/pull rods at an angle greater than 45* ( Been advised to keep these bends less than that to prevent deflection) in order for them to meet the servo arm/horns. DSCN7365.jpg , after some research, I will use Futaba's S9551 low profile servo, a bit expensive, but every bit helps.DSCN7367.jpg
            Too many boats, not enough time...

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            • tlandauer
              Fast Electric Addict!
              • Apr 2011
              • 5660

              #36
              Gathering some measurement and idea for a low profile mount. I will use the aluminum lateral from the TFL mount, i think...

              DSCN7366.jpg
              Too many boats, not enough time...

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              • srislash
                Not there yet
                • Mar 2011
                • 7651

                #37
                Looks good Tim. 5/32 will be plenty of cooling tube. I have trimmed those CF sides down on those servo mounts to get them squated down better. The sanding disc comes in handy there. There is also nothing wrong with making your own side pieces.

                Where did you get your G-10?

                Ps, I am glad to be of help my friend, thank you.

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                • Fluid
                  Fast and Furious
                  • Apr 2007
                  • 7990

                  #38
                  Tim, why not lay the servo down on its side to avoid the excessive pushrod bend. Just use two cheap servos, one on each rod. Looks like you have the room.


                  .
                  ERROR 403 - This is not the page you are looking for

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                  • tlandauer
                    Fast Electric Addict!
                    • Apr 2011
                    • 5660

                    #39
                    Originally posted by srislash View Post
                    Looks good Tim. 5/32 will be plenty of cooling tube. I have trimmed those CF sides down on those servo mounts to get them squated down better. The sanding disc comes in handy there. There is also nothing wrong with making your own side pieces.

                    Where did you get your G-10?

                    Ps, I am glad to be of help my friend, thank you.
                    Thanks! I think I got the FG G-10 here(it's been awhile, never have good memory): http://www.mcmaster.com/#grade-g-10-phenolic/=vg7cf6
                    I would need to cut half of the side plate and loose the bottom portion, either I cut two strips of CF or FG to beef it up or do a mount from the ground up. Got sometime to think it over.
                    Too many boats, not enough time...

                    Comment

                    • tlandauer
                      Fast Electric Addict!
                      • Apr 2011
                      • 5660

                      #40
                      Originally posted by Fluid View Post
                      Tim, why not lay the servo down on its side to avoid the excessive pushrod bend. Just use two cheap servos, one on each rod. Looks like you have the room.


                      .
                      Fluid, thanks for your input, my initial thought was to have a servo lay down on its side, and just have the other rod as a cosmetic idle arm. Using two servos would have been a great idea but honestly I wasn't smart enough to think about that in the first place....
                      Will see how it goes after I cut some plates, it does look like there is more room in the picture than there is in reality when I placed two servos there now.
                      Thanks for selling the hull to me, hope you don't mind my butchering up this hull...
                      Too many boats, not enough time...

                      Comment

                      • tlandauer
                        Fast Electric Addict!
                        • Apr 2011
                        • 5660

                        #41
                        Well, I forgot to mention that I had already ordered the servo before reading these posts this morning, so I went ahead and made a hybrid mount, retaining TFL's aluminum lateral support.DSCN7373.jpg
                        I tried cutting down the original, here is how they look:DSCN7368.jpg
                        It sits much lower in the hull:DSCN7374.jpg DSCN7375.jpg
                        Too many boats, not enough time...

                        Comment

                        • tlandauer
                          Fast Electric Addict!
                          • Apr 2011
                          • 5660

                          #42
                          How should I attach the "legs" on the mount?

                          I don't feel comfortable mounting the thin rail onto the floor, I thought of adding some extra material for the epoxy to grab. I didn't want to drill a roll of holes as I am wearing out my drill bits ( 2 sets already) on the CF plate.
                          I don't know which way will be better and more practical:

                          DSCN7370.jpg DSCN7371.jpg

                          Picture 1 is prettier, but not so crazy about the 90* attachment .
                          Picture 2 allows good attachment to the rails and still provides a bigger area on the bottom for epoxy.

                          Any suggestions are appreciated!
                          Too many boats, not enough time...

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                          • srislash
                            Not there yet
                            • Mar 2011
                            • 7651

                            #43
                            How about small pieces of cloth on the inside corners Tim. I have yet to bust any of my servo mounts out and I don't even do the cloth as mentioned. I have cut down the stock mounts or made my own with new little holes for epoxy flow thru.

                            PS: and you know I DO blow things over.

                            Comment

                            • tlandauer
                              Fast Electric Addict!
                              • Apr 2011
                              • 5660

                              #44
                              Originally posted by srislash View Post
                              How about small pieces of cloth on the inside corners Tim. I have yet to bust any of my servo mounts out and I don't even do the cloth as mentioned. I have cut down the stock mounts or made my own with new little holes for epoxy flow thru.

                              PS: and you know I DO blow things over.

                              Thanks!
                              I will have to wait for the servo to come and do a mock up, I cut the plates according to the spec found on the Futaba web site, and I did it pretty tight, don't know if there is any clearance inside the rails. Can always shim it up with washers.
                              I guess I think I am building a bridge all the time, good thing I am not building a plane...
                              Too many boats, not enough time...

                              Comment

                              • keithbradley
                                Fast Electric Addict!
                                • Jul 2010
                                • 3663

                                #45
                                Do you have a cutoff wheel Tim? Just sanding that servo mount should be fine, but if you're not comfortable with it and don't want to drill holes you could score a line down the side. Go up maybe 1/8" from the base and score a horizontal line with a cutoff wheel. It doesn't have to be very deep, just .010"-.020" would be enough to give your epoxy something extra to "bite" onto. When you glue it in just epoxy right over the top and slightly above your scored line.
                                www.keithbradleyboats.com

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