[NSRCA-discussion] Fuel consumption, OS 140.

[Ed Miller]

In a 10.5lb EMC2 flying Masters, I seem to get a little more than ounce a minute consumption. I am using the ES 2C140S90 pipe and a APC/DL 3 blade 15.75x11 prop turning between 7600 and 7800 rpm on the ground depending on heat and humidity. The sequence takes between 8 and 9 minutes and I use between 9 and 10 ounces of fuel depending on how windy it is and how often I need to use full throttle. I would say your fuel consumption is a bit high but it may be due to the engine not being fully broken in yet. 
Ed M.
  ----- Original Message ----- 
  From: colin chariandy 
  To: NSRCA Mailing List 
  Sent: Monday, July 10, 2006 10:20 AM
  Subject: [NSRCA-discussion] Fuel consumption, OS 140.


  Just getting past the break-in period for an OS140 and find the fuel consumption a bit high...8-9 min on 16oz(in windy conditions). I'm using 15% Cool Power, 15x11x4 APC, Aeroslave pipe at about 28". The high end needle is 11/2 turns out.  My older 140 runs closer to 3/4 turns out and will give 11-12mins on the same set-up(except the pipe was 1" longer) with no noticeable difference in performance.

  Is this normal for the newer engines or will the "mileage" improve as I continue to run? 

  Does the pipe length significantly impact the fuel usage?

  Colin.


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