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!

Help! YS-120AC Cannot shut it down?

Discussion in 'Giant / Scale RC General Discussions' started by Snoopy1, Jul 9, 2019.

   
  1. Snoopy1

    Snoopy1 640cc Uber Pimp

    5,359
    7,593
    113
    Canada
    Have a few of these but never this problem it is YS 120AC. Runs great puts out all the power no hesitation, run perfect except cannot shut the motor down after a flight. I believe it has an air leak some were but cannot find it. Stripped it down check everything cannot find a thing wrong. Replace all the silicone tubing. Have ordered a gasket set and an O ring set from YS-engines USA. But do not believe it will solve the problem. Even when I put my finger over the intake it is bearable able to keep running but it does for about 20 seconds, and then dies.
    Does anyone have any suggestions.
     
  2. Alky6

    Alky6 150cc

    A bandaid and doesn't solve the issue causing the problem, but will allow you to shut the engine off.... how about a loop of wire that pulls and pinches the fuel line closed?
     
    Snoopy1 likes this.
  3. Snoopy1

    Snoopy1 640cc Uber Pimp

    5,359
    7,593
    113
    Canada
    As crazy as it may sound if I cannot solve this problem it is a solution
     
    thurmma and Alky6 like this.
  4. Snoopy1

    Snoopy1 640cc Uber Pimp

    5,359
    7,593
    113
    Canada
    Now that I am thinking about it again and the suggestion from @Alky6 did the pylon boys not have a fancy way of shutting down there engines because the if I am not mistaken they did not have a throttle on their engines.
     
  5. Alky6

    Alky6 150cc

    Not sure. But I have seen many a pattern plane with glow engine that has the looped wire around the fuel line that was servo operated to pinch the fuel line to shut down the engine. @49dimes or @dhal22 may have some pics or drawings of this simple mechanism.
     
    Snoopy1 likes this.

  6. dhal22

    dhal22 GSN Sponsor Tier 1

    Pinch it against the firewall. Servo in the fuse, wire through the firewall, around the fuel line and draw the wire back enough to pinch the line. Adjust your servo travel in your radio.
     
    Snoopy1, pawnshopmike and Alky6 like this.
  7. Snoopy1

    Snoopy1 640cc Uber Pimp

    5,359
    7,593
    113
    Canada
    Thanks for all the suggestions.
     

Share This Page