A LHS has a converted Kioritz gas engine. The owner knows very little about it. It is very small, maybe 18 to 20cc. Anybody know anything about these. I search the web a little and found some Sears weedeaters used these. Just curious about finding a light, less expensive (than RCS 1.4) engine for the larger 60-90 sized planes (not asking for too much...) Thinking about the Sig Astro Hog or 4*120, maybe even the 76" Lazy Ace.

marcus

Kioritz gas engines are used by "ECHO" lawn products. I don't have any convertions but I own a trimmer and a blower, 21cc & 23cc. They are great starting and running engines.

I have several Koritz 2.4s and a koritz twin but have not ever seen a smaller conversion of their engines. Are you sure you want to add the weight of a gasser, its easyer to use a 4cy, and get pretty much the same power at that size. Ken....The "BALSA BANDIT"

Yea, I want to add the extra weight..I like small gas engines. They're clean, less expensive to operate , usually require no starter-the small ones or ones with spring starters. But for all those creature comforts you sacriface wing loading...making landings and aerobatics more difficult. I think the 4*120 and 76" Lazy Ace bipe could carry the extra weight OK.

I must admit that 4cy's are my next farorite, love that smell, sound and better power to weight! Life is a such trade off!

Marcus

Had one for a short time on a 1/4 Monocoupe. Was someone elses attempt at a gas conversion. The stock carb has a very small venturi which limits it's power. It started easy and ran well but would only turn a 14-8/15-6 prop. I needed more ump so I sold it

I had one, bought it new. Ran real nice. A few years back, I shipped about ten boxes of engines. It was the" great engine give-away". All people had to do was pay shipping. I think that is where my Sears Kiortz engine went....cannot remember for sure! John


PS I am from Hesperia Mich...not the place on the avistar...got to fix that!!!!

Kioritz engines are made by Echo, which is one of the top brands of yard equipment, right up there with Stihl. The old 16cc engine is cute but underpowered for it's weight. The 21 and 24cc engines look identical, and are great little engines. I have converted many of them for myself and customers and they really work super. Unless they have been changed already, the stock carb is small and the muffler restrictive. Fixing those two little problems results in respectable power. I have several of these flying in my fleet right now. They are also the engines used by FPE engines.

They make the 16cc as mentioned, a 21.2cc, a 23.6cc, and a 25cc. The 23.6cc is the best of them, and looks exactly like the 21.2cc so the only way to tell them apart is by measuring the bore and stroke. The 16cc has a much smaller cylinder, and the 25cc has a larger cylinder with the cylinder bolts going through the cooling fins.

It depends on the condition of the engine, and the quality of the conversion, but it could be a very good little engine you have found.

AV8TOR

Hi Captain. I think I am the one than got your Koiritz/Sears/Echo (converted to glow?) in your most appreciated give-away a few years ago. I have moved, and had to give away a few things myself, but I kept your engine and plan to use it. I am going to run it on gas/glow, or convert it to electronic ignition. Thanks again. Richard/spaceworm

The very first part of the quote above should read that ECHO engines are made by KIORITZ. As Kioritz is the parent company in Japan. Excellent engines as I have several examples of the 21.2cc & 23.6cc yard implements that I acquired as a result of aviator1977's like of this brand. They are my favorites. I also have a BME 50 model engine that is made from a Echo 520 chainsaw.

Yep. Thanks for the correction Jim.

AV8TOR

Homelite made a 16cc engine they used on their hedge trimmer. As good as the Homelite 25 and 30 were in the trimmers, the 16cc just didn't have it. Little power and throttle response but started and ran easily. The 16cc Homelite was just not a candidate for a model airplane engine.

I have 62" Lazy Ace bipe powered by an NGH26. Its way too much power. I would suggest a RCGF 17 for your 72"'

Too much power? What's that??

AV8TOR

Conninghams bipes were not designed to be flown with high power. Get too much power and they will climb out of sight. If you adjust them not to climb on high power they become a dog that will easily snap

But that's what that left stick on the throttle is for; it moves forwards and back. There's no such thing as too much power!

I've always liked those Lazy Ace Bipes of his. I liked the picture of the gal in the bikini posing with them even more! (Now I'm dating myself, huh?)

AV8TOR

Yes but now you have an extra heavy engine that must have a balance and will carbon up flying at 1/2 throttle.
How about a DLE 110 then you will have lots of extra power.
That 72" bipe was designed to use a 10 cc glow motor.

I've just been teasing. Look at the first part of my signature; I am somewhat "power crazy". One of my most fun airplanes is a Twist "40" with a Fox .78 on it, and another is my Giant Stik, intended for 30cc, with a 50cc twin on it.

However, if the mixture is set right, an engine shouldn't carbon up running at half throttle. I power all my airplanes to cruise around quite nicely on half throttle, and only use full throttle for certain aerobatic maneuvers. Never had a problem with carbon....

AV8TOR