2 stroke vs 4 stroke questions

[av8rps]

One last comment on the subject of 2 stroke vs 4 stroke;

I've had four engine failures in aircraft since I started flying 30+ years ago. Two of them were with 2 strokes, and the other two were with certified 4 stroke aircraft engines. And three of the failures happened on takeoff () All but one of the failures was fuel related, which I believe is the biggest reason for any engine failure in an aircraft.

So don't get too mezmerized by 4 stroke reliability.

Here's what I remind people of when I hear people berating 2 strokes for their poor reliability while talking up how reliable 4 strokes are;

"Fly everything like it has a 2 stroke engine in it. Any engine can fail..."

I love my 912 engines, and have never had one fail me. But I still try to fly it as if it is going to quit any minute...

[Aviator]

. But I still try to fly it as if it is going to quit any minute...

Thats what they train to prepare us for!

[Dave F]

Im looking to buy a used KF 3 or 4 probably, Im just undecided between the 912 and the 2 strokes that they are powered with, Ive only flown planes with 4 strokes, and never rode in a KF yet (but want to if I can find a way).

Curious on your thoughts? the 4 stroke more reliable? Cheaper to run/maintain?

Thanks!

I don't think either one is more reliable. The operator/maintainer skillset does have a lot to do with it. I find the tinkerers are the one that have the most troubles. 912 ir a 582 does not matter.

I have thousands of 2 stroke hours and in over 30 year I have have one stop running. ( was a Rotax 185 single ignition on a Lazair in hte Very Early 80s Carbon in gap of plug- landed on one engine pulled plug- clenaed and off again)

You can find 2 sroke Kitfoxs up to Model Iv for 12 to 20k
same one with 912 from 23 to 30 k

Or you can pay double that again for a kit and build it.

Kitfox a great plane, safe and fun.

Check my movies 503, 582 912 and 912S Kitfoxes.

It is what you can afford it seems but build them light to perform.
I have seen 912 Kitfox IV @ 600 lbs and also some tanks at 900 lbs......
unreal !!