Fuel Flow in rotax 914

Hi Marcelo,

This should be described in you Dynon installation manual, Note the standard setting for a red cube FT-60 is 68,000 pulses per gallon, noting you are using litres.

The photo looks like you have two FT-60s so is one in your return fuel line? 

To recalculate the K factor (pulses per gallon or litre) you use this simple formula:

Corrected K factor = ({Current reported consumption} X {Previous K factor}) / Actual fuel used

So in your case:

50,000 = ({25} x {76000} / 38 

I would try and get some more readings on actual consumption vs. amount reported by FT-60/Dynon before changing as 38 Litres of fuel is not really going to get it correct first go. Note the FT-60 has some specific mounting requirements and does not like vibration much so if that is an issue tuning the K factor will only get you so far, your image also show the wiring coning out the side and it’s recommended it points up.

Hi Byron, thank you for your instructions. 

I will recalculate, problaby change the wire, and after it come back here .

You help me a lot, thanks again,

Marcelo

Ft-60 install instructions also call for 4-6" of straight tubing INTO and OUT of the red cube. Your 90 degree fitting right at the cube is not good for accuracy.