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Thread: 12" scratch built cat

  1. #1
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    Default 12" scratch built cat

    scaled shocker plans and a revive after 6 years,,,

    here is video should be in hi def

    watch out for the outboard sponson... and the pool walls

    I can provide plans if you are really interested in building one...

    Edit, this boat is the v1 model, while the rest of the thread is about V2. I widened the deck and flared the sides in an attempt to add stability... wow it worked beautifully!!
    Here is vid of V2: https://youtu.be/dHzuyOpLMvk
    Last edited by Jesse J; 07-15-2017 at 07:19 PM.
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  2. #2
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    Cool boat but looks like the video is sped up. Is it built out of wood?
    32" carbon rivercat single 4s 102mph, 27” mini Rivercat 92mph, kbb34 91mph, jessej micro cat(too fast) was

  3. #3
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    Wood boat, normal speed.
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  4. #4
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    Can you post some pics of it? Would you be willing to sell a hull built? I don't have the time to work on my own stuff at this point and some of the campgrounds we go to have small ponds that id like a small cat to run.
    32" carbon rivercat single 4s 102mph, 27” mini Rivercat 92mph, kbb34 91mph, jessej micro cat(too fast) was

  5. #5
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    could be, are you looking for a bare hull or a ARTR? these guys are pretty time consuming. I was thinking of modifying the plans and building me a second - I could build two in tandem and see if you would like. The current one is 12" by about 3.5" - I am thinking of widening it some to add stability in the turns but still keep her good lines. Not sure when I'll get to this project.
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  6. #6
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    Quote Originally Posted by Jesse J View Post
    could be, are you looking for a bare hull or a ARTR? these guys are pretty time consuming. I was thinking of modifying the plans and building me a second - I could build two in tandem and see if you would like. The current one is 12" by about 3.5" - I am thinking of widening it some to add stability in the turns but still keep her good lines. Not sure when I'll get to this project.

    Bare hull is plenty fine. I build all my boats. Just don't have time to construct a hull too. Wider would be fine with me.
    32" carbon rivercat single 4s 102mph, 27” mini Rivercat 92mph, kbb34 91mph, jessej micro cat(too fast) was

  7. #7
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    spent some time yesterday scaling down my 24" cat - not too hard, just take everything down 50%.
    1/16" ply bulkheads, 1/16" basswood for stringers (ends up straighter) and 1/32" skin with 1/64 outer layer.

    here are the twinsies ready for some skin. black is carbon fiber strand used to maintain strength during construction.
    length 12" width 5.5" tunnel depth 0.5"

    Plans are on two 11x17" pages in pdf form and wood readily available at hobby shop.

    I can send plans if anyone is interested in building one - laser cut would be a nice time saver....
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  8. #8
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    Looks good!
    32" carbon rivercat single 4s 102mph, 27” mini Rivercat 92mph, kbb34 91mph, jessej micro cat(too fast) was

  9. #9
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    These look great!

  10. #10
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    Hello Jesse,
    You always build cool boats with cool music to accompany it. Good job!
    Government Moto:
    "Why fix it? Blame someone else for breaking it."

  11. #11
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    Cool carbon fiber tissue


    got the bottoms skinned yesterday. laid in a feather weight of tissue and west systems epoxy to seal up and rigidify the interior. Next is the 2 part foam to make it bullet proof.

    microcats3.JPGmicrocats4.JPGmicrocats5.JPG
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  12. #12
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    Just so dang cool!

  13. #13
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    Sent your plans moments ago...

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    I received them. Thank you again! Now if they would only build themself.....

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    never fear, take your time and keep at it and before you know it, all done!
    A good jump start is to get them laser cut. All out of 1/16" ply. Then one 24 x 12" sheet of 1/32" ply for sheeting.
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    I think a guy at work has a laser cutter... may be quite the time saver.

  17. #17
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    Chris, I'll send you the plans in the morning in dxf format, which should work for the laser cutter.
    I tried to upload updates but ose server was on a smoke break.
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    Thanks again!

  19. #19
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    Cool fluffy kitty

    added some US composite 2part foam - 4lb lightest version.
    then shave it down to fit deck line
    these bad boys are tipping the scale at 100g (3.5 oz) at this point. still nice and light!
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    Last edited by Jesse J; 09-10-2015 at 08:31 AM. Reason: mo' info
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  20. #20
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    Good looking work!
    Z
    KBB34" Mono - Fast
    ToySport Triton- Not as fast

  21. #21
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    Cool productive weekend

    sanded flush the foam, made room for battery and got her belly skinned
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    Cool more progress

    nice bottom shot, battery slot for the twin and a sneaky passage for wires.
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  23. #23
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    Default one almost done

    the twin is got her top skinned, just ready for some sealant and a hatch
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    Thanks for the motivation, Travis. I should have yours done in the next week or so. need to get your hatch done.
    I can set yours up to take same hardware and servo as mine, i.e., reinforced transom and a place to mount the micro servo.
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  25. #25
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    Cool micro cat done!

    ready for the test. but first a few pics to fully document.
    Motor mount - CF design as you build.
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  26. #26
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    Hatch - trace the drawing on the band saw and sand to desired shape
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  27. #27
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    Hatch - make deck shape of curve, glue foam in place and paint with epoxy and fg fibers
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  28. #28
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    finished product:

    bare hull weight: 155 g / 5.5 oz
    ready for the pool: 410 g / 14.4 oz
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  29. #29
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    So cool!

  30. #30
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    Had a chance for a maiden voyage yesterday and was very pleased with how she ran. very stable, smooth and quite dry. working on movie today and will post later.
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