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  1. TonyHallo

    Scale RCM 1/3 Scale Champ Build

    We had a very wet flying season last year, grass grew like heck. All the small plane flyers bitched, my response, you need a bigger plane. The spruce arrived today, began pinning the left side down. Ordered 6' long longeron stock to avoid splicing, looks like each side will take 3 pieces of 6'...
  2. TonyHallo

    Scale RCM 1/3 Scale Champ Build

    Both exhaust pipes are identical so the pipe for the left side was lengthen 7/8" to match the right side, 3 1/2" extensions were added to both. The pipes exit in the scale location and are vertically coped. I ordered a 26"x8" Falcon prop to dress the front. My wood is scheduled to deliver...
  3. TonyHallo

    Scale RCM 1/3 Scale Champ Build

    Thanks for the list, I saved it so I can find it when needed. Looked at an old thread, back in 2014 the WT-456 and WT-994 were installed. Not sure what was first, towards the end of thread some two years later one person stated his Roto 85 ran fine out of the box, I seen one in a Hanger 9...
  4. TonyHallo

    Scale 1/3 Scale Extra 330L Build.

    Did you increase the size of the ailerons? And what is reason for the sheeting behind the main spar?
  5. TonyHallo

    Scale 1/3 Scale Extra 330L Build.

    I like to make fiberglass sockets for carbon fiber tubes because the size varies so much, plus/minus .025". Are your sockets glued in?
  6. TonyHallo

    Scale 1/3 Scale Extra 330L Build.

    So there must be another socket in the box. The wing tube is quite a bit different from what I'm use to, I think I will but a carbon tube when I get ready to build it.
  7. TonyHallo

    Scale 1/3 Scale Extra 330L Build.

    My tube is 36" long as well, the socket material is shorter than the tube by several inches so there's no way I could make 18 1/4" sockets unless there is another socket in the kit. It is below a cardboard separator in the box and didn't want to take all the wood out to have a better look.
  8. TonyHallo

    Scale RCM 1/3 Scale Champ Build

    The carburetor is a Walbro WT962, Used on a DLE 20? Even smaller than i throught
  9. TonyHallo

    Scale RCM 1/3 Scale Champ Build

    My carburetor is pulse ported to the intake in the fiber insulator between the carburetor and manifold.
  10. TonyHallo

    Scale RCM 1/3 Scale Champ Build

    The venturi is rather small on the carburetor, looks like something from a 30 CC string line trimmer. I guess it has to handle 42 1/2 cc per revolution. When I look at the carburetor it is hard the image this engine will swing a 25"-27" propeller. we shall see. I'm guessing the small venturi...
  11. TonyHallo

    Scale RCM 1/3 Scale Champ Build

    The hinge brackets are milled from aluminum bar with 1/8" brass pin, the cotter pin is from a DuBro giant scale hinge. I was planning to use a 4-40 clevis on the original but elected to use a heavy duty ball link. I'm happy that I made this modification.
  12. TonyHallo

    Scale RCM 1/3 Scale Champ Build

    I was never crazy about the aileron hinges shown on the plans, a piece of 1/16 aluminum sheet running on a 4-40 screw, just seemed that these would develop slop in short order. About a week ago was reading a post on how to install C. B. Associates strap hinges and I remembered that I had won a...
  13. TonyHallo

    Scale 1/3 Scale Extra 330L Build.

    About 1 inch, just lay it between the core and sheeting, I would image that 1/8" would work as well.
  14. TonyHallo

    Scale 35% Krill Extra 330SC....CUSTOM-ARF!!!

    Very nice, what paint system do you plan to use?
  15. TonyHallo

    Scale 1/3 Scale Extra 330L Build.

    Here's is the stab from the same build in a my drop cloth vacuum bag weighted down to keep it straight, without weight you end up with banana.
  16. TonyHallo

    Scale 1/3 Scale Extra 330L Build.

    Gorilla poly glue. Not sure what you have in mind, I would cut the blocks weighted down from top cutting both the top and bottom with the top up weighted straight on the bench. Here's an example of a rudder I cut 15 years ago. . Glue to skins with on with the core in the shucks weighted in...
  17. TonyHallo

    Scale RCM 1/3 Scale Champ Build

    The inlet diameter of the ram is 1.25", there's about 1 1/2" from inlet of the ram to the back wall. The box area is 6.9 sq. inches, area of ram pipe is 1.23", the ram and the carb are about the same area so there is about 4 1/2 times free area to that of the pipe. I was erring on the side of...
  18. TonyHallo

    Scale RCM 1/3 Scale Champ Build

    The throttle and choke servos are mounted in a removable tray on the back of the box. Four servo screws hold the tray in place so that the servo can be placed if the need arises. Unbolt the throttle and choke ball links, remove four screws and slide the tray out.
  19. TonyHallo

    Scale RCM 1/3 Scale Champ Build

    Cut a hole in the firewall for the carburetor and velocity stack. The instruction manual warns against operating without the velocity stack as it will effect performance, my ram pipe information indicates the shape they selected will decrease performance by 1.2% to 5%. The shape is similar to...
  20. TonyHallo

    Scale 1/3 Scale Extra 330L Build.

    No, the foam you are using needs 1/16" balsa, 3/32" is going over open bays. Yes I have cut many foam core and foam rib wings over the past 35 years.
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