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GSN GIVE-A-WAY Hangar 9 35% Extra 300X Assembly

Discussion in 'Giant / Scale ARF Build Threads' started by Jetpainter, Nov 9, 2016.

  1. Here are the instructions and setting I received. I'm not including a picture of the carb as you can't see any difference from the outside. I looked for a good while trying to find something new about it.

    This note was on the shipping paper/invoice (no charge for this work by DA):

    D2 Mod done to 12o carb

    "Please follow instructions on sticker and do not make any needle changes unless 100% necessary. Needles should not be moved more than 1/8 turn in any direction. If engine is sold down the road please pass on instructions."

    Sticker Label on bag:

    New needle settings
    HIGH 2-1/4
    LOW 1-5/8
    Let motor warm up
    before making any
    tuning adjustments

    Colton told me that a bit of time to make sure the engine was warm before taking off is really necessary. He suggested a run of 15 seconds at mid-throttle.
  2. Luchnia

    Luchnia 70cc twin V2

    Appreciate the offer. It seems odd that they would leave the needles set, or at least don't want them touched unless absolutely needed. I guess they are thinking someone might get them way off and have more issues than needed. I usually like my planes fine tuned, although I get lazy and just let it ride for the sake of flying, but really nothing like a fine tuned engine. I may just wait until you get that one going again and see what happens. BTW, how long did it take to get the carb mod turned around with DA?

    Glad you got the cans. I think that is what I am running, but I forgot to check the last time I had the 120 out.
  3. 49dimes

    49dimes Damn I'm hungry

    On both engines the L and H needles were about 1/4 L 1/8 H turned in from the start point settings (1.25L 1.5H for 26cc 1.5L+H for 50cc). During tuning on both engines I only made a very slight adjustment 1/16L turned in (both engines) and left the HS needle on the 26 alone but opened the HS needle a bit more on the 50cc. And that's my story and I'm sticking to it :laughing:
    Jetpainter likes this.
  4. 49dimes

    49dimes Damn I'm hungry

  5. Xpress

    Xpress GSN Sponsor Tier 1

    I honestly don't know why some guys will fire their engine up and then immediately run it wide open before any heat has been generated. This is the worst thing you can do for an engine, especially these 2 stroke air cooled engines. They need to have heat in them before turning the RPM's. I fire my engines up and let them run for about 15-20 seconds at idle before opening up the throttle. Then I run that engine up wide open for a handful of seconds to make sure it's well cleared out and good and hot before taking off.

    DA didn't send me any specific running instructions with either of my new 120's I got this year, maybe I need to message Colton :oblong:
    49dimes likes this.
  6. Terryscustom

    Terryscustom 640cc Uber Pimp

    Some dude on here starting an engine tuning thread way back, it's a good process and works if you follow it. As you said, ALWAYS tune a hot engine and set your low and high idle after a flight. http://giantscalenews.com/threads/basic-engine-tuning.2806/
  7. BalsaDust

    BalsaDust Moderator

    Funny thing is I have that post printed and laminated and it goes with me to the field. Very helpful.
    Terryscustom and Bluepilot2003 like this.
  8. Xpress

    Xpress GSN Sponsor Tier 1

    I asked Colton about the special tuning instructions and he said it's a special carb for those with can issues, does not pertain to most of us.
  9. Jetpainter

    Jetpainter 640cc Uber Pimp

    Hey I know that dude. I've stolen a lot of his ideas over the last few years. He's pretty sharp. ;)
    Terryscustom and Xpress like this.
  10. 49dimes

    49dimes Damn I'm hungry


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