Welcome To GiantScaleNews.com

GSN is the BEST in an RC online community. Less corporate BS and more down home fun. Better conversations with REAL RC'ers. Don't settle for the biggest when you can have the best!
  1. If you are new to GiantScaleNews.com, please register, introduce yourself, and make yourself at home.

    We're 1st in Giant Scale RC because we've got the best membership on the internet! Take a look around and don't forget to register to get all of the benefits of GSN membership!

    Welcome!

Scale RCM 1/3 Scale Champ Build

Discussion in 'Giant / Scale Scratch and Kit Build Threads' started by TonyHallo, Jan 5, 2019.

   
  1. TonyHallo

    TonyHallo 70cc twin V2

    Yes the springs will get hardened and tempered. Propane torch in a brick enclosure until the steel becomes non magnetic, then oil quench, tempered in the Whilpool oven.
     
    Snoopy1, 49dimes and Alky6 like this.
  2. TonyHallo

    TonyHallo 70cc twin V2

    Managed to get the three pieces back into one. There are 20 2-56 blind nuts and screws holding it together. Tried to put all of the screws in the same location as the full scale. There are more on the bottom than the top, I guess the top is the last piece to install? Still picking the thick CA off my fingers! Working with 2-56 is a real pain.

    IMG_2367.JPG
     
    Snoopy1, acerc, Bartman and 3 others like this.
  3. 49dimes

    49dimes Damn I'm hungry

    Tell me about it...Just mention 2-56 or 1.5 mm and my arthritis says "Nope" not doing this :(.
     
    stangflyer, Alky6 and TonyHallo like this.
  4. TonyHallo

    TonyHallo 70cc twin V2

    Cut out 1/4" plywood firewall and mounted the cowl to it. The lower half gets bolted on from the front of the plane, then the bowl section, finally the upper half gets bolted to the lower half and bowl, there are 4 4-40 screws that get tighten form the interior that fasten the upper half to the fire wall.. At least that's the plan. Look what the postman delivered today. I sent an email on Sunday 3/3/19 checking price and availability, here it is today. Got to work a few details out to mount the engine, the intake manifold and carb are right where the mounting lugs are, looks like an engine box and standoffs are in order. The overall engine length is longer than cowl so box will protrude into the interior, should be interesting. The width is perfect, 1/4" clearance on each side. Will modify the exhaust pipes to exit on the scale location. IMG_2370.JPG IMG_2372.JPG
     
    Alky6, stangflyer, 49dimes and 6 others like this.
  5. Snoopy1

    Snoopy1 640cc Uber Pimp

    4,510
    6,468
    113
    Canada
    2-56 is a pain to work with I will avoid it if I can just to difficult to work with.
     
    stangflyer likes this.
  6. Snoopy1

    Snoopy1 640cc Uber Pimp

    4,510
    6,468
    113
    Canada
    That engine just looks perfect. It is always nice to receive a four stroke like that cannot wait to hear it.
     
    Last edited: Mar 7, 2019
    Alky6, stangflyer, TonyHallo and 2 others like this.
  7. TonyHallo

    TonyHallo 70cc twin V2

    Got the engine mounted to the firewall. I really don't care for standoffs but with this engine you have no choice but to use them. I had originally planned to extend a box out then use shorter standoffs but decided that made no sense. Turned 4 custom length standoff's on the lathe. IMG_2373.JPG
     
  8. TonyHallo

    TonyHallo 70cc twin V2

    First the bottom section is installed. Three 4-40 screws on each side.
    IMG_2374.JPG
    Then the nose bowl. A bunch of 2-56 button heads.
    IMG_2375.JPG
    Finally the top goes on, more 2-56 button heads and four 4-40's from the back side. Still need to make a hole for the carburetor and velocity stack to poke through. Then make a box to seal the cabin area from the engine. Traveling to Lebanon PA for the Central PA Aeromodelers Swap Shop tomorrow. It's a little over 4 hour trip one way, but it is one of the biggest in the north east, 41,000 square feet, 602 spaces. I don't expect to accomplish much tomorrow, I'll get right home at Miller time. Last year I found a spare fuselage and cowl for my Byron Glasair build. Hopefully the Glasair will get painted once the weather breaks.

    IMG_2377.JPG
     
    Last edited: Mar 8, 2019
    Alky6, stangflyer, WMcNabb and 2 others like this.
  9. Snoopy1

    Snoopy1 640cc Uber Pimp

    4,510
    6,468
    113
    Canada
    I agree I dislike standoffs as much as much you do. Have ever given it any thought of making two diagonal braces to stop vibrational twists. I have sketched it out a few times but just do not have the tools to make the brakes properly.
     
    stangflyer likes this.
  10. Snoopy1

    Snoopy1 640cc Uber Pimp

    4,510
    6,468
    113
    Canada
    That is really easy fit plenty of space below the engine for a nice big box muffler.
     
    stangflyer likes this.
Loading...

Share This Page