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Projects Canadair Ct114 Tutor Build

Discussion in 'Airplanes' started by wasfixedwing, Jul 5, 2019.

< Weird flying machine. | Flying Off Snow/ice With Skis >
  1. wasfixedwing

    wasfixedwing Member

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    Thanks D.O.G.
    Regards Stinky

    Don
     
  2. wasfixedwing

    wasfixedwing Member

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    I didn't think I would have anything to pass on until paint. But there is still a lot of little things going on. I've been working on getting a better cockpit fit. Working towards a fit that looks like a proper seam, rather than a crack. Same thing with the nose gear doors. I decided to completely redo them. The gap was way to big when they were closed and the nose gear strut was contacting the right side gear door control horn. I want the nose wheel on the center line. This meant the retract assy had to be installed to the right of center. It was, but, a 1/16" to far right. Not fun. As the nose gear support had to be redrawn and reinstalled 1/16" to the left. The door assy will now be made from .080" styrene. Next problem. How do you glue nylon to styrene? Internet search. Surehold SH-302 Plastic Surgery super glue. It is made to glue many dissimilar materials, including nylon. I should have it next week. Next modification. I weighed the plane. In theory it is ready for flight. All up weight except for paint, 6.93lb. Double the proposed weight from when the project started. I checked with my painter and he says we will add 6oz more with paint. All up weight now is 7lb 6oz. Time to repower. The 70mm fan will only put out 3lb 12oz under ideal conditions. I have found a 80mm 12 blade unit that puts out 3.5kg (7lb 11oz) of thrust. I've also found you tube video of thrust tests showing this. The fan unit should be here at the end of the month. Later I'll post pictures of the changes. BTW I have a 70mm fan unit and ESC for sale.

    Don
     
  3. Mazin

    Mazin New Member

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    Absolutely fantastic build thread!!! I've been wanting to do more foam and after seeing this I'm gathering the parts for a couple hotwire cutters. Again great job!
     
  4. wasfixedwing

    wasfixedwing Member

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    Hi Mazin. Thanks for the shout out. Just a suggestion on your cutters. Make sure to use a spring on the tension side. I made the mistake of not using one. The spring helps to maintain tension when the wire heats up and stretches. Constant tension helps with smooth cuts.

    Don
     
  5. Mazin

    Mazin New Member

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    NICE!! I will absolutely take your advice thank you!
     
  6. wasfixedwing

    wasfixedwing Member

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    Mazin. If you have any questions, I will help if I can. Here are some glues that worked and I found foam safe on pink ridged foam board.

    1. BSI 30 minute epoxy. Areas of high strength.
    2. Dollar store 5 minute epoxy. Works just as good as Home Depot $9.95
    3. Lepage contact cement. Foam safe, 40 minutes before putting pieces together
    4. Canopy glue. Foam safe, 3 hour cure.
    5. Zap CA. Foam safe, but you must use Zap kicker only or it,s not foam safe.
    6. 302 Plastic Surgery. It is a CA. It bonds many materials. The only I found that will bond nylon. I had to bond some control horns (nylon) to styrene plastic.
    7. Not shown. 3M 77 spray adhesive is foam safe and quick to work with. Also, a hot wire cutter cuts it as easy
    as it cuts the foam. Epoxy is impossible to cut unless you turn the cutter temp up to where the foam just melts.

    There are other adhesives. These are what are available in my area and worked for me.
    Good luck and have fun with your build.


    IMG_1222.JPG
     
  7. Mazin

    Mazin New Member

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    Thats awesome man thank you!! I will do what can to help out as well, i have a few tricks up my sleeve. Not a master builder but i can get by and even show a little creativity every now and then.
    I'm a big fan of the foam safe CA, of course i always used normal activator with it. Just crazy cost. I've been searching the zon and other sites finding the best deals i can its jist a little slow going right now. Thanks for the heads up on the epoxy because im actually having to restock all my adhesives due to years of just being left idol.....btw thats a pia because i hate buying that stuff lol.
    Again great work and thanks!!!
     
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