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!

DA120 running rich?

Discussion in 'Gas Engines' started by dhal22, Apr 18, 2019.

   
  1. dhal22

    dhal22 GSN Sponsor Tier 1

    While repairing the landing gear section of my Edge I had it upside down and noticed not bad but enough oil exhaust build up in the mufflers pipes to ask. How much residue is normal?
     
  2. Snoopy1

    Snoopy1 640cc Uber Pimp

    5,286
    7,486
    113
    Canada
    Hard to give you an answer. Usually at the end of the day flying I stick some paper towels up the exhaust to prevent it leaking in the car. But it does not take to many times and they are pretty well soaked and need to be changed.
     
    dhal22 likes this.
  3. Milby Dunn II

    Milby Dunn II New to GSN!

    Depends
    Make sure you're using a correct oil to gas ratio... if you are running rich and having trouble with the needles on the engine, you might want to adjust oil to gas ratio. More than likely, it sounds like normal oil discharge from the exhaust. I always have to wipe clean at least some oil after flying.
     
    dhal22 likes this.
  4. acerc

    acerc 640cc Uber Pimp

    2,590
    4,137
    113
    Florida
    If the needles are right and the engine is getting to the proper temperature there should not be any noticeable oil residue. I have not wiped an airframe down after final tune in many years, as a matter of fact the Red Eagle Pitts shown in the pic has not been wiped down for oil in five years.
     

    Attached Files:

    • 001.JPG
      001.JPG
      File size:
      456.4 KB
      Views:
      44
    dhal22, WMcNabb and pawnshopmike like this.
  5. dhal22

    dhal22 GSN Sponsor Tier 1

    I'm probably fine, haven't used mufflers in years so my normal residue is probably buried in canisters.
     
    acerc likes this.

  6. Xpress

    Xpress GSN Sponsor Tier 1

    Just make sure your tune is correct and you're using a good oil ratio with a good oil. I run Redline 32:1 (I have one engine that needs 32:1, otherwise it'd be at 40:1) through mine and I never really get a strong oil buildup even after a couple dozen flights.
     
  7. dhal22

    dhal22 GSN Sponsor Tier 1

    I use Stihl Ultra Synthetic at 50-1. My goto engine for years was my 3W-106, this 120 is a beast.
     
    acerc likes this.
  8. TonyHallo

    TonyHallo 70cc twin V2

    Sounds like an oil war is brewing!!!! To be honest I've used everything under the sun and never had a problem with any engine, my string line trimmer is 24 years old and just rebuild the carb two years ago, pump gas. It gets same fuel as the planes.
     
    dhal22 likes this.
  9. acerc

    acerc 640cc Uber Pimp

    2,590
    4,137
    113
    Florida
    I use the Stihl Ultra also because it is the most convenient to get where I am at, five minutes away. I use to run 50-1 but it was not quite enough for the four strokes so now I am at 40-1.
     
    dhal22 likes this.
  10. Snoopy1

    Snoopy1 640cc Uber Pimp

    5,286
    7,486
    113
    Canada
    I use to do 50 : 1 but dropped down to 40:1 but if you asked why or did I feel difference no not at all just that it was strongly recommended by DA but I had run 50:1 for many years with zero failures. Not going to get into what type of oil or why. Believe any reputable oil works.
     
Loading...

Share This Page