Fuel burn at 75% Rotax 912 & 914

by marek kaniewski in 912 / 914 Technical Questions 10 years ago

Hi, much conflicting information about the fuel burn on the 912 & 914 engines.

Please could you share your experience if you own one of these engines.

thank you, marek

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Re: Fuel burn at 75% Rotax 912 & 914

by Kevin Stewart » 10 years ago

Kevin Stewart

5 184 0

Hi Marek,

My 2003 Evektor Eurostar is fitted with an 80hp 912UL and at 90mph (4800rpm) it burns about 13 litres per hour. This is probably about 75% power.

Kevin

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Re: Fuel burn at 75% Rotax 912 & 914

by Przemysław Wiśniewski » 10 years ago

Przemysław Wiśniewski

65 247 3

rotax 912UL (80hp) @ 4500RPM 11-12lph.

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Re: Fuel burn at 75% Rotax 912 & 914

by James Ott » 10 years ago

James Ott

22 336 405

912uls on a Kitfox series 7 at 5000 rpm 4.0 gph.

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Re: Fuel burn at 75% Rotax 912 & 914

by Kevin Machniak » 10 years ago

Kevin Machniak

6 167 40

I have consistent 4.8 us gal/hr at 5200 rpm over the last 4years of flying

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Re: Fuel burn at 75% Rotax 912 & 914

by itemprop='name' » 10 years ago

0 0 0

Just a bit of useless info , if it,s a carby petrol engine a rough industry gauge is for every 100 hp used, you use 27 litres per hour to feed it . So that means at full power a 100 hp 912 uls you would use 27 per hour . So at 75 percent power should be around 20 litres per hour, in theory on paper . Often hard to gauge a true 75 percent power in cruise as you have a prop on it not a dyno .

Cheers Daniel

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Fuel burn at 75% Rotax 912 & 914

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