Register

If this is your first visit, please click the Sign Up now button to begin the process of creating your account so you can begin posting on our forums! The Sign Up process will only take up about a minute of two of your time.

Page 1 of 3 123 LastLast
Results 1 to 25 of 56

Thread: X series Cat


  1. #1
    F1madness's Avatar
    Join Date
    Sep 2010
    Location
    Staffs, UNITED KINGDOM
    Posts
    819
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    X series Cat

    I originally designed this hull for twin outboards but have decided to build it and enter it for class A racing aswell the hull is 38" x 13 1/4"
    Iv just ordered an ASP 7.50cc nitro engine with genesis tuned pipe and manifold (which may need modding) i shall order the rest of the parts/hardware while i build the 1st hull,also need to build a radiobox but might mould 1 of these aswell for perfect fittment
    So far iv built the plug and moulded it so prepping now to lay the 1st hull up
    Im hoping to have the 1st done and built for the next race in september
    This is how it looks so far but with without the rear upright cowls


    The moulds



    Proposed setup
    Theres enough room to fit 2 x 24oz fuel tanks in the sponsons
    3/16 driveline with offset rudder
    ASP 7.5cc Nitro engine with tuned pipe (though i did consider 10cc 1st but thought to try it 1st with this setup)

    This is where i need some advice as iv never run nitro before
    What mixture/% nitro to run
    What size off props
    And do you tune the length of pipe like the gas engines
    I heard good reports on these engines and for the bucks there OK
    Any help would be greatfull
    Thanks F1
    RC Boating enthusiast and designer builder

  2. #2

    Join Date
    Nov 2008
    Location
    hamilton, ON, CANADA
    Posts
    1,369
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: X series Cat

    nice looking hull the ASP 7.5 may leave you wanting more

  3. #3

    Join Date
    Dec 2010
    Location
    melbourne, AUSTRALIA
    Posts
    745
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: X series Cat

    You wont need that much fuel Daz, I only run 8-12oz tanks in my 7.5 tunnels. You will love that smell of the nitro fuel in the air Daz!!

  4. #4
    F1madness's Avatar
    Join Date
    Sep 2010
    Location
    Staffs, UNITED KINGDOM
    Posts
    819
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: X series Cat

    Thanks bud
    im thinking of building 2 more of these for my boys to have agao at racing with so i can put 10cc nitro in 1 me to play around with

    ORIGINAL: rcguy1411

    nice looking hull the ASP 7.5 may leave you wanting more
    RC Boating enthusiast and designer builder

  5. #5
    F1madness's Avatar
    Join Date
    Sep 2010
    Location
    Staffs, UNITED KINGDOM
    Posts
    819
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: X series Cat

    Hey Dion
    I need them tanks as the heats are 15 or 20 min long sometimes longer upto 30mins
    i had a couple of nitro cars but im going back yrs ago LOL but running them in boats is gonna be different and the engines will be better than the 1 i used to run hopefully

    ORIGINAL: F1TUNNEL

    You wont need that much fuel Daz, I only run 8-12oz tanks in my 7.5 tunnels. You will love that smell of the nitro fuel in the air Daz!!
    RC Boating enthusiast and designer builder

  6. #6

    Join Date
    Dec 2010
    Location
    melbourne, AUSTRALIA
    Posts
    745
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: X series Cat

    Wow they are long heats, maybe you will need all of that fuel!! What sort of 10cc are you looking at?
    cheers,
    dion.

  7. #7
    F1madness's Avatar
    Join Date
    Sep 2010
    Location
    Staffs, UNITED KINGDOM
    Posts
    819
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: X series Cat

    ill probably stich with the ASP's reason being there the only 1s i can get all the spares for with in a day or 2 as weve got a stockist here not far from me
    iv looked at others but they sell just the engines and not much spares wise etc
    I have looked and the CMB but im not prepared to spend mega money on a nitro engine when some1 in the club running ASP 7.5 and staying with them no probs
    RC Boating enthusiast and designer builder

  8. #8
    Ron Olson's Avatar
    Join Date
    May 2002
    Location
    Kalamazoo, MI
    Posts
    18,061
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: X series Cat

    To answer a few nitro questions for you; I know that nitro is very expensive in the UK so check to see if the ASP's are made for low or high nitro as some manufacturers build their engines for both. I'd generally run around 45% but you may have to make do with less.
    We measure the pipes almost the same way as gas engines except that we use the center of the engine (glow plug) instead of the exhaust flange as a measuring point and on a 7.5cc usually about 10-1/2" (whatever that is in metric I don't know).
    Generally, the ASP's suffer from having small sport carbs from planes so they really hurt performance. Yes, CMB's are very expensive even on this side of The Big Pond. Check into Nova Rossi's as the price is lower yet will keep up with the CMB's.
    IMPBA 17238 S
    269 Racing Team

  9. #9
    F1madness's Avatar
    Join Date
    Sep 2010
    Location
    Staffs, UNITED KINGDOM
    Posts
    819
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: X series Cat

    Hi ron
    been doing some research and it seems 20% nitro is recomended
    Im not trying for any record speeds more consisitancy as iv decided once setup my 8yr boy will be racing it so should be fast enough for him while i build another 1 up with 10cc engine instead
    The problem im having is finding a supplier for marine nitro engines here in the UK with a good back up of spares the only 1 iv found is http://www.justengines.co.uk/index.html who retails the ASP engines at a reasonable price
    can you tune the nitro engines or buy bigger/better carbs ????

    RC Boating enthusiast and designer builder

  10. #10

    Join Date
    Apr 2007
    Location
    Cape Town, , SOUTH AFRICA
    Posts
    822
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: X series Cat

    Hi,

    When you say class-A in what series is this? And how light is the boat. We run the Go .28 motor in our Proboat thundercats and they are way over powered for the m-style course we run. I might have to see if I can buy a hull from you as a 38" hull sounds more like the size I need. What width is the tunnel part?

    Cobus

  11. #11
    F1madness's Avatar
    Join Date
    Sep 2010
    Location
    Staffs, UNITED KINGDOM
    Posts
    819
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: X series Cat

    HI Cobus long time no speak 
    Class A is with the BMPRS http://www.bmprs.co.uk/rules2012.html#boatspec
    Once moulded the 1st  ll know a weight of the hull and let you know 
    ill have to measure the tunnel width as iv not got it too hand and cant remember of the top off my head haha
    Hope your well bud
    Rgds F1
    RC Boating enthusiast and designer builder

  12. #12
    F1madness's Avatar
    Join Date
    Sep 2010
    Location
    Staffs, UNITED KINGDOM
    Posts
    819
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: X series Cat

    Hi guys slight change of plan Iv just ordered new 10cc ASP engine for this cat so will now be entered in the B class
    Iv got something a little bit more special for the A class new thread coming soon 
    RC Boating enthusiast and designer builder

  13. #13
    HendricX's Avatar
    Join Date
    Jan 2009
    Location
    Rotterdam - NL
    Posts
    686
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: X series Cat

    You had better asked me ... good as new CMB-Evo_20** for 120€ .

    And all the spares you need at Dave or Ian.

  14. #14
    F1madness's Avatar
    Join Date
    Sep 2010
    Location
    Staffs, UNITED KINGDOM
    Posts
    819
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: X series Cat

    will email you
    RC Boating enthusiast and designer builder

  15. #15
    F1madness's Avatar
    Join Date
    Sep 2010
    Location
    Staffs, UNITED KINGDOM
    Posts
    819
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: X series Cat

    Update 
    wetsanded the moulded halfs working through the grades from 320-1200g and lots of polishing to a shine
    All thats left to do now is a good clean down and start the coats of release wax ready for making the 1st moulded hull 

    RC Boating enthusiast and designer builder

  16. #16
    F1madness's Avatar
    Join Date
    Sep 2010
    Location
    Staffs, UNITED KINGDOM
    Posts
    819
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: X series Cat

    just starting the many coats of release wax,hoping to layup the 1st hull tomorrow to break the moulds in 
    Will post pics once done
    RC Boating enthusiast and designer builder

  17. #17

    Join Date
    Dec 2010
    Location
    melbourne, AUSTRALIA
    Posts
    745
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: X series Cat

    Look forward to the pics Daz. Cant wait to see how many different moulds you have in 12 months time!! I am sure the first one will turn out real nice like everything else!! Good luck tomorrow mate!!
    Cheers,
    Dion.

  18. #18
    F1madness's Avatar
    Join Date
    Sep 2010
    Location
    Staffs, UNITED KINGDOM
    Posts
    819
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: X series Cat

    LOL cheers bud
    ill have a few im starting back on the F1's this week aswell and got some some more ideas for this cat aswell so will start that soon once the 1st 1 done 
    Its all go LOL
    RC Boating enthusiast and designer builder

  19. #19
    F1madness's Avatar
    Join Date
    Sep 2010
    Location
    Staffs, UNITED KINGDOM
    Posts
    819
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: X series Cat

    1st attempt at moulding 1 of my designs
    Here we go bit the bullet and layed up the 1st topdeck and trimmed ready for experimental join
    couple of brisltes and bloody wind blew some small particles into the lay up but this 1 is just practise to see how it goes and also break the moulds in
    The lower is layed up just waiting for it to cure abit more before trimming the edges 
    Hopefully join the 2 halves either later today of tomorrow then leave in the moulds for a couple of days before seeing the 1st ever hull iv moulded
    RC Boating enthusiast and designer builder

  20. #20

    Join Date
    Nov 2008
    Location
    hamilton, ON, CANADA
    Posts
    1,369
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: X series Cat

    good luck on your first pull molds look nice

  21. #21
    F1madness's Avatar
    Join Date
    Sep 2010
    Location
    Staffs, UNITED KINGDOM
    Posts
    819
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: X series Cat

    Cheers bud 
    and here it is
    The 1st out the moulds
    abit premature but its a practise 1 and a thin layup to break the moulds in but as you see it its straight out the moulds so not come out too bad at all
    RC Boating enthusiast and designer builder

  22. #22
    F1madness's Avatar
    Join Date
    Sep 2010
    Location
    Staffs, UNITED KINGDOM
    Posts
    819
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: X series Cat

    Just been playing around it
    theres alot of ways this hull can be run
    I placed in 7.5cc nitro engine but could even fit a 10cc 
    24oz fuel tank fits in the sponsons nicely aswell 
    couple of it floating LOL

    Even inboard FE 
    Motor used is a leopard 4074,gives you some idea how much room there actually is
    single setup
    or twin setup

    and the twin OB off course either FE or Nitro that it was designed for no pic of them yet as only have 1 LOL
    RC Boating enthusiast and designer builder

  23. #23

    Join Date
    Apr 2007
    Location
    Cape Town, , SOUTH AFRICA
    Posts
    822
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: X series Cat

    Nice looking. What is the tunnel width? Looks narrow.

    Cobus

  24. #24
    F1madness's Avatar
    Join Date
    Sep 2010
    Location
    Staffs, UNITED KINGDOM
    Posts
    819
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: X series Cat

    Cheers Cobus
    Sorry bud forgot you asked about the tunnel width
    the width is 160mm or  just over 6 1/4 " 
    should be perfect for the length hull and the depth of the tunnel
    RC Boating enthusiast and designer builder

  25. #25

    Join Date
    Oct 2008
    Location
    bolton, UNITED KINGDOM
    Posts
    293
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: X series Cat

    Well Done Daz thats a great job , Keep up the good work


Page 1 of 3 123 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
All times are GMT -6. The time now is 12:06 PM.

SEO by vBSEO 3.6.1 ©2011, Crawlability, Inc.