A 70hr SS7 report form OZ.

[jrevens]

That was a great report, Ross! Your numbers sound very good to me. Thanks for the effort you take to keep this forum informed as you progress - it is appreciated very much!

[Dorsal]

Nice write up, very impressed with the cruise @ 3GPH! (about half the burn I get for the same speed).

[jiott]

Great numbers Ross!
That combo of 912is and Airmaster prop is impressive.

[WWhunter]

Maybe it's Imperial gallons. (that would be 3.6 US gallons/hr.)
Even at that, it would be some pretty good fuel burn!! Sounds like what I get at under 5000 rpm.

[rosslr]

I just used another conversion app. and got 3.9625807853722 USgals/hr. Sorry about that but we dont use US gallons nor MPH here so not familiar with the conversions - 15lt/hr is about what the rotax tables suggest - I think they suggest about 2-3lt better fuel consumption for the 912isSport than for the 912uls.

cheers

ross

[WWhunter]

That is still great fuel burn rate! Just under 4 US gallons per hour cruising at 120 mph! That is great, basically getting 30 mpg! How are you liking the FI 912?

I have seriously been thinking lately of getting rid of all the various projects I have, and spending the money on either the 912iS or waiting until the newer 915 (?) comes out. It will be at least several years until I can get to the point of needing an engine so I am in no hurry.

I just guesstimated the 3.6, since I am close to Canada and I have a few gas cans with both measurements on them. I couldn't remember if they are 0.8/0.9 imperial gallons for a 1 US. gallon can.

[Esser]

Just fuel inject your own 912 for way cheaper. http://www.sdsefi.com/aircraft.html

3.78 liters to the US gallon. 1 US Gallon is .83 Imperial (4 liters) When are you guys going to switch to metric like the rest of the world?

[rosslr]

Hi Keith - you ask how I am liking the 912is sport- yep, it is very cool engine - smooth and seems really well matched to the Kitfox. I mentioned that the only issue I have had with it is a couple of the electrical connectors that would develop intermittent contact. The solution wast to tie them off tightly to ensure the male and female pins were in constant contact- since doing that I have not had any issues. Just got the 50 hr oil report back from Blackstones and all good - slight elevated readings on a couple of metals that they put down to the new engine. John Mc Bean suggests running the engine @ 5200rpm. My Airmaster is programmed to govern at 5000rpm and it seems smooth and happy there. I have tried it at 5200 and I dont see much difference. Will keep experimenting with that. The Fuel system is a little different and Kitfox has manufactured a very nice fuel manifold that houses the fine filter, pressure sender and by pass valve and that makes the fuel system between the pumps and engine very neat

So at this stage, very happy with it.

Josh, thanks for the confirmation on the conversion from Lt to US gals - and as for your probing Q about when the US will go metric ....... I think Canada will appoint you as Ambassador with diplomatic skills like that!!!

cheers

r

[WWhunter]

Just fuel inject your own 912 for way cheaper. http://www.sdsefi.com/aircraft.html

3.78 liters to the US gallon. 1 US Gallon is .83 Imperial (4 liters) When are you guys going to switch to metric like the rest of the world?

Esser, are you using one of these systems? I had looked into them a while back but honestly forgot about it.

Maybe a pm would be better or another thread. I don't want to get off topic any further with Ross's thread. Sounds like he has built a very nice plane!