Wello written ed,when you get the steam part sorted please post.I've got heaps of that saved along with othersand it's free don't forget

Ed, I haven't flown a two stroke glow engine for several years now. I fly fourstrokes and two stroke Diesels. Both work very well with 3 blade props.

The YS .91 should turn a 12x8-3blade Graupner in the mid nines, the 12.5x7 3b turns harder than the 12x8 and would turn in the mid 8s. I like the Graupners for their wider blades and cool looks. The Master Airscrew 3 bladeers work well too but don't look as cool and make a howling noise that is irritatiing to me. The MA 3 bladers are prebalanced.

There are only a couple of 2 strokes that I like; an Evolution .455 and .46NT. I have a Lee K&B .61 that I got from W8YE that I haven't run yet, but there are couple of kits here for it to eventually go on. I also got an older ST .61 from him. Both of those engines have only a couple of tanks fuel run thru them, so they are basically NIB.

Blondes or brunettes, huh?

I know what you mean about the sound, a long time ago I raced a Kawasaki 500 triple with chambers (the original superbike) and I miss that sound, although it would probably get me arrested and in jail if I still had it, 3 cylinders and all that smoke and noise, so much fun, I loved it.
michajon

I agree. In addition to two and four strokes I enjoy CO2 and rubber power. I'll bet steam would be a hoot if we could get it worked out.

jess

Hello michajon

I also have very fond memories of the Kawasaki Mach III. I never rode either the street version or the racing version. However, when I was 16 and each morning while I was waiting for the school bus, one of those would go flying past. "Flying" being the operative word. All that noise and drama, it was wonderful.

Bye, Ian

Me too ian.I had the original h1a,blue with the upside down left hand gear change(five up from the bottom)what a grenade re power delivery.The h1b was a bit more mellow after the totalled h1a and the 750 triple,first one was..

My dad had a street version, and the racing one with wheelie bar and expansion chambers.

I only rode on the street model, and it was unbelievable what it would do.

Their torque curve looked like a heart monitor spike.

Hello Old Fart:

I used to live in Perth. If my memory serves me correctly, one of the Kawasaki 750 two strokes helped change the road rules in that state. Or more correctly, two 18 year olds did when they tried to ride one of those bikes through the side of a bus on Thomas Street. The estimated speed at impact was 110 mph.

After that and because of similar tragedies around Australia, laws were introduced which stopped people buying those sort of bikes as their first bike.

After that somber note, in skillful hands, they were an amazing series of bikes. We shall not see their kind again.

Bye, Ian

Let me know if you are interested in swapping that Lee K&B .61 for something else, or selling it outright. I do happen to have a brand new ASP 1.08 two-stroke...(smile)


Ed Cregger

Yes ian all true,the triples all had that foreboding unique sound when throttled up under five grand,kind of like look out and come to God feeling.In 1969 the only thing that came close was maybe a triumph trident or rocket three re a cool sound and adrenalin factor.How lucky we were
ps forgot about the new honda four

A twostroke on a tuned pipe is best for high speed dive when you really push the airplane and punish the engine at WOT and it sounds as it gonna explode any time Small sized twostrokes on a muffler just makes annoying sound and usually are low on power Twostrokes are also durable and less expensive on a trainer for newbies doing bad landings every other flight. For everything else fourstrokes are preferable IMO.

In (I think) 1972 a friend bought one of the first Suzuki GT750s. Two stroke, water cooled triple- a wonder for the time. He asked if I wanted to ride it and I climbed on while the bike was still running. I then proceeded to choke the thing down in the middle of the busiest intersection in town in rush hour. That was when I realized I had no idea where the starter button was. I first found the horn button.

jess

Gents, we need to herd this thing back in the direction of the original topic. I love to talk bikes as much as anyone but we can't let this go completely astray. Thanks much, Dave

I like that Ed. Unbelievably great country we live in.

American cars all the way, I like to look at the blondes but married a brunette, Chevy rules, and to keep it on topic for Hobbsy two strokers are where it's at.

I'm happy with 2 stroke or 4 stroke, it all depends on the application.

Who would really want to refine a scratch build Platt warbird and then stick a 2 stroke on it to ruin the effect losing scale sound? I like my 4 strokes and never had a problem with any OS or Saito 4 stroke in the last 9 years I became active again in the hobby. Not one. They run like a swiss watch, smooth idle, and just sound very scale, with a lot more torque than any 2 stroke I've owned. Great in biplanes, warbirds, and slow moving heavy planes, 4 stroke is their home.

For speed, I like the 2 stroke. For cost, I like the 2 stroke when it's a $99 knock around Sunday flier.

I avoid the YS engines due to the 20/20 fuel they want for smooth idle and transition. They are very thirsty too. I would hate out of habit ruining the seals on one if I accidentally threw after run oil in a YS after flying.

Some cowls are tight and the 4 stroke muffler doesn't require as much cutting.
Some cowls are wide, and a 2 stroke fits inside best with a deflector sticking out of the bottom.

Some planes require a lot nose weight to balance, so a 4 stroke will add that 4 ounces for you without static dead lead.

I just go with the flow, whatever fits the application, it's all good. I just got into gas, so I have little opinion on that until I get more acquainted with them. It's really the only 1/4 scale reasonable option, clean up is a breeze, and again, it's all about the application.

Hey Jez, I'm a Ford, Harley, Saito and Fox guy. I have a couple of Enyas, one LASER and others but Fox and Saito out number the others many fold.

I will stick with u two strokes r the way to go. I have had an os and saito 4-strokes. im not saying one is better than the other but that they deliver power much differently. And u most always will have way more power with two strokes than 4s. Look at hardcore motocross racing. honda's crf450r races in the 250 class. thats 200ccs more displacement to even be competitive with a 2stroke. The guys engineering theses powerplants r some of the best in the world. They simply cant create a competitive 4stoke in even close displacement to a 2. The 2s r always lighter and more powerful than the 4s. I think the guy talking earlier about hardcore 3d is probably correct. I believe that 4 stokjes r a more refined smoother powerplant. If u get low and slow with a 4 u better be a good pilot. when i fly a 4stroker i feel like i have a little lag time in throttle response, meaning i have to be 1/2 step ahead of the plane all the time. With a 2 i feel instantaneous throttle response. Again i think im saying better piloting skill is required for a 4, not a bad thing just different</p>

I prefer the 2 strokes

Simplicity – flip and fly

Price

Lots of noise easy to track in the sky

The field I’m flying from has big areas with high vegetation full of poison ivy and hundreds of airplanes were lost there, its frustrating but it need to be taken into account that if you loose an airplane at least it wouldn’t be very expensive one.

The biggest engine I have is a 91 FX, bigger than this I want to go gas because price of fuel.

I always saw the instant response (torque) of 4 strokes over having to wait for 2 strokes to wind up RPMs. That has been what always happens for me.

Two strokes with small carbs and propped for less than 10,000 RPM seem to have the same response. Many gasser two stokes for example.

Yes so true but i;m with everybody who likes the sound of a crisp fourstroke going vertical,thats when i see elvis

G'day OF. I was out today test flying my Decathlon with its Laser 100. I think I have finally worked it out. It likes to have some rudder in turns and especially when landing. I am not all that good with the rudder so I mixed some in with the ailerons and the plane is a different beast. Actually, this is my 8th day in a row that I have been out flying. I have flown more than 10 planes with 12 different engines over the 8 days. 1 was electric, 1 was a two stroke glow, 1 was a two stroke diesel and all the rest were four strokes.

The sound of that Laser puttering past on about half power was amazing. Most of the noise was coming from the prop and the airframe. Lots of interesting whistles and wooshing sounds. It really did sound like a light aircraft engine. More of a growl than a bark. And it will idle really low forever. It just sits there ticking away. Then open the throttle and full noise is there in an instant.

Four strokes for me. It was two strokes once but not any more. Must be getting old.