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Thread: JetChopper30 mono deep v hull FRP GLOW OR ELECTRIC

  1. #31
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    Quote Originally Posted by leo_home View Post
    Hello Tony,

    Herve is in France. Paul is in Australia. They might not know about the NAMBA race classes. I don't know too.

    Happy rc boating,


    Leo
    I've ben communicating with Herve and Paul. Herve made me a beautiful motor mount, and I'm talking with Paul now. I'll have an e-mail for you later today.
    2008 NAMBA P-Mono & P-Offshore Nat'l 2-Lap Record Holder; '15 P-Cat, P-Ltd Cat 2-Lap
    2009/2010 NAMBA P-Sport Hydro Nat'l 2-Lap Record Holder, '13 SCSTA P-Ltd Cat High Points
    '11 NAMBA [P-Ltd] : Mono, Offshore, OPC, Sport Hydro; '06 LSO, '12,'13,'14 P Ltd Cat /Mono

  2. #32
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    hello Leo

    you are right, i don't know about NAMBA class
    but it's rewarding to share setup !!!!

    @tony : i receive mine today !!!!

  3. #33
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    Default Vid of the JetChopper30 test run

    Finally got some time to run in good water. UL-1 2030KV motor; FCR 140A speedy; 2 x 2S GenAce 5000MaH packs in series;
    M445. Nice run . Boat's looking good to run in P-Ltd Mono at the NAMBA Nat's coming up.

    http://www.youtube.com/watch?v=Zx_WyN1yrBU
    2008 NAMBA P-Mono & P-Offshore Nat'l 2-Lap Record Holder; '15 P-Cat, P-Ltd Cat 2-Lap
    2009/2010 NAMBA P-Sport Hydro Nat'l 2-Lap Record Holder, '13 SCSTA P-Ltd Cat High Points
    '11 NAMBA [P-Ltd] : Mono, Offshore, OPC, Sport Hydro; '06 LSO, '12,'13,'14 P Ltd Cat /Mono

  4. #34

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    Quote Originally Posted by properchopper View Post
    Finally got some time to run in good water. UL-1 2030KV motor; FCR 140A speedy; 2 x 2S GenAce 5000MaH packs in series;
    M445. Nice run . Boat's looking good to run in P-Ltd Mono at the NAMBA Nat's coming up.

    http://www.youtube.com/watch?v=Zx_WyN1yrBU
    very fun to drive it.

    I am not yet have a chance to build one for own use.

  5. #35

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    As boaters suggested. Need a stronger boat bottom. Tested with one with the rear 55% of the bottom and transom made with double fiber layers, equivalent to 600g/m^2. Weight increased by 90g. Feel that the bottom is now very strong. The hull weight is now 850g.

    Believe that can make the whole bottom and transom with double fiber layers and can maintain the same shipping cost. Estimated hull weight should be 880g.

  6. #36
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    I am sure people would pay the extra for shipping I know I would to have a stronger hull

  7. #37

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    Hello boaters,

    Since the bottom made with 600g/m^2 fiber. JetChopper30 hull specification changed to:
    Weight(new): 850g(1.87lbs)
    Bottom and transom shell thickness(new): 2mm
    Deck and hatch shell thickness: 1.4mm
    Length: 760mm(29.92inches)
    Width: 230mm(9.06inches)
    Height: 129.5mm(5.1inches)
    Deck to keel height: 100.6mm(3.96inches)
    Resin: polyester
    Fiber: MAT, 300g/m^2 for deck and hatch, 600g/m^2 for bottom and transom
    Surface material: gel coat

    The bottom and transom are now very strong. Yet, some sort of rails, connecting rods for the motor mount are still highly recommended.

    Happy rc boating,


    Leo

  8. #38
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    Those are good improvements; even so the original hull I received was plenty strong. It's generally acceptable to install a transom doubler to better seat the rear hardware so that's not a problem. Using 3/32" plywood for the motor bed is also the simple solution to insure rigidity; also a simple operation. Mine's just about ready to compete in the P-Ltd Mono class at the NAMBA Nationals in two weeks. Should be a promising entry
    2008 NAMBA P-Mono & P-Offshore Nat'l 2-Lap Record Holder; '15 P-Cat, P-Ltd Cat 2-Lap
    2009/2010 NAMBA P-Sport Hydro Nat'l 2-Lap Record Holder, '13 SCSTA P-Ltd Cat High Points
    '11 NAMBA [P-Ltd] : Mono, Offshore, OPC, Sport Hydro; '06 LSO, '12,'13,'14 P Ltd Cat /Mono

  9. #39
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    Cool... watching.
    Nortavlag Bulc

  10. #40

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    Hello All,

    JetChopper30 hull is now NAMBA FE P-LIMITED MONO STRAIGHTWAY RECORD HOLDING.

    NAMBA web site record: http://www.namba.com/content/records.asp?EventType=11

    Happy rc boating,


    Leo

  11. #41
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    Default JC30 rigged for P-Ltd Mono Video

    Here's a cellphone video of the hull rigged with an AQ 2030 / UL-1 60A esc

    http://www.youtube.com/watch?v=5O0uxDV0Ovg
    2008 NAMBA P-Mono & P-Offshore Nat'l 2-Lap Record Holder; '15 P-Cat, P-Ltd Cat 2-Lap
    2009/2010 NAMBA P-Sport Hydro Nat'l 2-Lap Record Holder, '13 SCSTA P-Ltd Cat High Points
    '11 NAMBA [P-Ltd] : Mono, Offshore, OPC, Sport Hydro; '06 LSO, '12,'13,'14 P Ltd Cat /Mono

  12. #42
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    How much is the JetChopper30 ?

  13. #43
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    Quote Originally Posted by justski View Post
    How much is the JetChopper30 ?
    Hasn't been established as yet. Promise that it'll be very affordable .

    Does great in monster chop too http://www.youtube.com/watch?v=qkiTfVT1LaE
    2008 NAMBA P-Mono & P-Offshore Nat'l 2-Lap Record Holder; '15 P-Cat, P-Ltd Cat 2-Lap
    2009/2010 NAMBA P-Sport Hydro Nat'l 2-Lap Record Holder, '13 SCSTA P-Ltd Cat High Points
    '11 NAMBA [P-Ltd] : Mono, Offshore, OPC, Sport Hydro; '06 LSO, '12,'13,'14 P Ltd Cat /Mono

  14. #44
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    Thanks can't wait to get one
    Quote Originally Posted by properchopper View Post
    Hasn't been established as yet. Promise that it'll be very affordable .

    Does great in monster chop too http://www.youtube.com/watch?v=qkiTfVT1LaE

  15. #45

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    We tested with different RUDDER SETUP. Found that this setup has pretty good stability to turn at full thottle:

    00002760.jpg

  16. #46
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    Mar 2013
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    Wa
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    looking to get one in red let me know if i can get one soon
    Its not the boat its the driver http://namba2016fenats.com/
    Whiplash,Sprint Cat, Pursuit, 83' Miss Rock modern hydro JAE21, Dragon M11 Tunnel, Mickey Beez Jet, CF JAE21

  17. #47

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    http://www.modelgasboats.com/resourc...tricks/tuning/

    Refer to Glenn Cupit's article on rudder set up, RUDDER "CASTER", A LITTLE CAR TALK, BACK TO BOATS. Articles talk about rudder length and rudder lift. With many testing, I got the following conclusion on JetChopper30 set up:

    Offset the rudder 55mm to the right. Pretty stable turn at full throttle. Rudder too close to the centre line has too much prop., keel lift, lower turn stability. In perfect situation, rudder lift just balance the prop., keel lift.

    Happy rc boating,


    Leo

    JC30_transom_V8.jpg

  18. #48

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    I am relocating. Can make one for you on early September.

    Rgds,


    Leo

  19. #49
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    Quote Originally Posted by leo_home View Post
    I am relocating. Can make one for you on early September.

    Rgds,


    Leo
    Hello Leo,

    Just sent you a message.
    Please, check your inbox.

  20. #50
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    want a red one?

  21. #51
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    Quote Originally Posted by Doby View Post
    want a red one?
    No, thank you.
    I just have a question Regarding the rudder lengh for this hull.... Thinking for a heat Racing.

  22. #52
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    are these still available

  23. #53
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    Quote Originally Posted by Doby View Post
    want a red one?
    ...................

  24. #54
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    Quote Originally Posted by rayzerdesigns View Post
    are these still available
    I'll check. But do give Doby a shout........
    2008 NAMBA P-Mono & P-Offshore Nat'l 2-Lap Record Holder; '15 P-Cat, P-Ltd Cat 2-Lap
    2009/2010 NAMBA P-Sport Hydro Nat'l 2-Lap Record Holder, '13 SCSTA P-Ltd Cat High Points
    '11 NAMBA [P-Ltd] : Mono, Offshore, OPC, Sport Hydro; '06 LSO, '12,'13,'14 P Ltd Cat /Mono

  25. #55

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    Hello all,

    It is available.

    I used to have some rudder setup very similar to Tony's. I found that too much rudder lift. Than started a very time consuming testing: RUDDER LIFT: offset distance, distance from transom, blade length/area. Last for more than half a year. Nearly finish. Will soon publish a general text, pretty good rudder setup, aimed for oval racing.

    Best regards,


    Leo

  26. #56
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    any updates on this hull?
    Brisbane,QLD, Aussie

  27. #57
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    Quote Originally Posted by leo_home View Post
    Hello all,

    It is available.

    I used to have some rudder setup very similar to Tony's. I found that too much rudder lift. Than started a very time consuming testing: RUDDER LIFT: offset distance, distance from transom, blade length/area. Last for more than half a year. Nearly finish. Will soon publish a general text, pretty good rudder setup, aimed for oval racing.

    Best regards,


    Leo
    Sounds interesting. Any more updates?
    Steven Vaccaro

    Where Racing on a Budget is a Reality!

  28. #58
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    RS
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    Hi! I sent an email to leo. Just like more details about shiping !

    but did not get an reply!

    his email remains this? btorcboat@gmail.com

    Thank you

  29. #59
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    send me an email and I can try to connect you with him.

    http://www.offshoreelectrics.com/contact.php
    Steven Vaccaro

    Where Racing on a Budget is a Reality!

  30. #60

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    Recently rigged a JetChopper30 electric. Offset motor and offset drive shaft. The balancing weight is related to the speed. Would have some new video and figures posted here one some weeks later.

    Leo

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