Tirpitz build

Discussion in 'Warship Builds' started by joe thomer, Nov 20, 2011.

  1. joe thomer

    joe thomer Active Member

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    Starting the build of the Tirpitz.
    hull cut out with 1/8 armor belt stringer.
    [​IMG]
     
  2. joe thomer

    joe thomer Active Member

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    adding strength and attach locations for BB protection.
    [​IMG]
    [​IMG]
     
  3. NickMyers

    NickMyers Admin RCWC Staff

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    Lookign good so far. I like the wood backing for the stringers and the little vertical pieces above them.

    What size motor are you throwing in this?
     
  4. joe thomer

    joe thomer Active Member

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    not sure what size it it, but it is big, came with the kit from strike models.
    think it is the same motor alex has in his bismark
     
  5. joe thomer

    joe thomer Active Member

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    installing drive shaft and motor
    [​IMG]

    ..[​IMG]
     
  6. thegeek

    thegeek Well-Known Member

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    The motor is a 6 volt Johnson hc970. They pull about 18 amps at 6 volts with a 2" or so prop.
     
  7. jch72

    jch72 Active Member

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    What drive voltage do you plan on running?

    Ron Hunt
     
  8. joe thomer

    joe thomer Active Member

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    ron,
    going to use a speed controler..viber marine about 40 amps. Think that would be large enough

    thegeek
    thx for the info above.
    what size amp speed controler would you sugest?
     
  9. rarena

    rarena Well-Known Member

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    40 amp might smoke.....
    I fried 3 of them
     
  10. jch72

    jch72 Active Member

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    Depends on the voltage you run, the lower the voltage the higher the amp draw. I'm running a 25 in my Nagato powering 2 motors on 13.2 volts. That pulls 10-15 amps. We have 2 Tirpitz locally and have been experimenting with drive for a while. I think we settled on 12 volts with 2 Titan marines geared down about 2 to 1 and a 1 7/8" 5 blade prop, Vicious P could probably tell you more since one of the Tirpitz is his. I think he lost a 40 amp recently but it might have been previously damaged and only partially functional. I don't recommend using the bec on the speed control for anything, if you fry the bec you lose the speed control, and they are a little under powered. Castle creations makes a decent 10 amp and 20 amp bec that seem to be pretty durable.

    Ron Hunt
     
  11. joe thomer

    joe thomer Active Member

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    ron,
    using 6 volt, lead acid sealed batterys, at least two, maybe more depending on how the layout in the boat works outl
    the batterys in parallel, so the voltage stays at 6 volts.
    not planning on gearying down right now, using 1/1 that came with the kit.
    just read up on the bec...Battery Eliminator Circuit....yes, sounds like it is better to get a speed controler with out bec. then you will not have any noise between the reciever and motor voltage and both are isolated. they did say the new sc ones, are much better now and most of this problem has been eliminated.
     
  12. joe thomer

    joe thomer Active Member

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    picks of drive shaft layout and ready for expoying in motor support and shaft support.

    [​IMG]
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  13. thegeek

    thegeek Well-Known Member

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    40 amp control should work fine. But the SLA batteries might have a hard time giving 18 amps for a whole hour (normal time for one battle).
     
  14. thegeek

    thegeek Well-Known Member

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    Also the motor mounts have to be bigger in foot print. Too small and they will torque and rip from the bottom.
     
  15. joe thomer

    joe thomer Active Member

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    motor mounts, yes I was wonder and thinking about that, due to the size of the engine. with this motor mount, a couple csk screw from the out side into the bottom of the motor mount should stregthing it more than enought. saw this idea from a build thread.
     
  16. joe thomer

    joe thomer Active Member

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    motor mount and shaft support expoyed in.

    [​IMG]
     
  17. daemond6

    daemond6 Member

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    Looking nice - bracing behind the stringers is a great idea - first build thread I've seen using that.

    Daemon
     
  18. McSpuds

    McSpuds Vendor

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    Yes I like the idea of putting wood back there...... Will be on my next build for sure. Good job!
     
  19. joe thomer

    joe thomer Active Member

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    drive shaft installed, used some glass for reinforcing
    [​IMG]
    the gelcoat chiped off during drilling, but fille it back in with expoy
    [​IMG]
     
  20. NickMyers

    NickMyers Admin RCWC Staff

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    Joe, are you planning on putting two pumps in this?