flyrotary@lancaironline.net Mailing List Archive

The real "jewel" has been the c/s prop. This allows me to cruise at around 10.6 gph at 4200-4500 rpm, 153 TAS. Until recently, I had been cruising at 5200 rpm, burning 14-15 gph. Speeds are about the same.

Mark

Hi; Mark,

Is your fuel burn pretty accurately calibrated? My gallons used readout is still about 5% high, so my burn would be likewise. I typically cruise my 20B at about 5400 - 5500 rpm, MAP aprox. 18” at 7500’ and get 9.3-9.5 gph when running 50-80F LOP. I expect the MAP readouts may differ a bit as I found I had to change the calibration on mine to get a correct reading.

TAS reported is calculated by the EM-2 and is in kts.

My EM2 reads out mph. I guess you changed the calibration factor. Also the TAS is about 5% higher than the GRT EFIS readout.

Best,