ESE's works engine tuner

[ken seeber]

Frits,
Ryger time again. Is there a nett outward (or inward) gas flow from the catch can filter, neglecting any possible venting back to the main inlet? Must admit it might be a bit hard to test with your bare hand when in 6th gear at 30k though.

[Flettner]

if i was the big bear, struggling with my economy, id be pretty cheesed off if someone came up with an idea for an engine that no longer needed as much oil as previously..... also anyone who felt that their empire as going to be brought down by a powerful two stroke engine invention , i may feel the need to protect myself and buy out such an invention to lose it.Personally, i would also be unlikley to accept a large vodka, while in london on a day out, from a smiling stranger, unless of course i had an antidote for polonium poisoning .........

You think the valve manufactures are worried? Honda sniffing around?

[Grumph]

Success in life is measured in constitution collaboration and contribution rather than cash assets.

Well my constitution is fucked, i seldom collaborate, most of my contributions are fittingly ignored....and i'm a poor pensioner. Trifecta ?

I remember there was another scavenging design Villiers used in the 1930's I am pretty sure it had a transfer between the exhausts had a flat crown.I can't find any decent drawings of how it worked Greg might know it was the one with the radial finned head.]

All I can find on that is the very early loop scavenge Villers motors used a symmetrical cylinder to try and avoid distortion. Two opposed exhaust ports and two opposed transfers. Hmm that sounds familiar....nothing new under the sun is there.

[Frits Overmars]

Frits, Ryger time again. Is there a nett outward (or inward) gas flow from the catch can filter, neglecting any possible venting back to the main inlet? Must admit it might be a bit hard to test with your bare hand when in 6th gear at 30k though.

I didn't do 30k in 6th gear Ken; not on the stretch of road you saw in the picture. There were protruding manhole covers in the middle, leaving a useful width of one kart width plus maybe 30 cm.
Re the catch can filter: I am not even at liberty to confirm that it is a catch can filter, but I will admit that it is a filter. Satisfied? Didn't think so. Nice try though .

[Grumph]

You think the valve manufactures are worried? Honda sniffing around?

I wish the Ryger crew the very best of luck cashing in on it...

This whole thing reminds me forcibly of the fuss around the Wankel. I well remember the first teasing press reports of a revolutionary new motor - and the long wait here in NZ for copies of the UK magazines with a full analysis of how it worked. Then the kitchen table sessions working out how to build a working prototype...

[Frits Overmars]

All I can find on that is the very early loop scavenge Villiers motors used a symmetrical cylinder to try and avoid distortion. Two opposed exhaust ports and two opposed transfers.

Here is the racing version, with two opposed carburetters as well. I used to refer to it as the see-through engine.

[husaberg]

All I can find on that is the very early loop scavenge Villers motors used a symmetrical cylinder to try and avoid distortion. Two opposed exhaust ports and two opposed transfers. Hmm that sounds familiar....nothing new under the sun is there.

They had a few version likely to get around the German patents maybe but there is a few variations but 7 ports in some and I am pretty sure one was between the ex rather than just a 2 side port turned 90 degrees.
So the frits picture is 4 transfers 2 exhaust and 2 inlets so I guess the std is 7 ports
funny enough I seen this New Villiers engine


Tomkinson’s new two-stroke engine is currently going through the patent application process, so it can’t be shown, but Tomkinson says that his two-stroke engine would cost up to 60 per cent less to manufacture than equivalent four-stroke engines. Not only is a two-stroke engine cheaper to produce than a four-stroke engine, but it produces 30-40 per cent more power.

Here is the racing version, with two opposed carburetters as well. I used to refer to it as the see-through engine.

Gee those rings are fat...........

[peewee]

aparently im the only one that is wondering what 30k rpm sounds like. unless the video was already posted and i missed it ?

[wobbly]

I would say it sounds like a big bang 500GP doing 13,000 - unbelievably amazing.

[husaberg]

.................................................. ...........

[F5 Dave]

I would say it sounds like a big bang 500GP doing 13,000 - unbelievably amazing.

yer making me all weepy. Mind you those NSR V twins sounded horny even if they were whapping big cylinders revving slowly. Must have been a great time hanging out in the pits to experience that on such a regular basis.

[ken seeber]

Well, we tried and tried, but couldn't get 70 hp, let alone 30k, so we put a 2nd engine on and it was a lot better. Based on that we are now going over to a 4 cylinder. Hope there's no man hole covers this time !!!!!.

[TZ350]

Here's one for you TZ, now we just need someone to translate the hieroglyphics

Athena EFI 2T article

Attachment 312531

I have seen the video of it (or one like it) running.

Its very interesting, I like the idea of vaporizing the fuel by squirting it against the hot cylinder head, cooling the head and possibly the piston crown too.

But with only one injector, it's difficult to see how they can properly cover the full range of fuel demand from very small to full squirt at peak torque with only one injector.

A high impedance fuel injector takes about 2ms to open and start flowing fuel properly, a peak and hold, about 1.5 or a little less.

At 14,000 rpm a complete revolution takes 4.3ms and the time between exhaust closing and TDC is about 1.1ms. The time between exhaust closing and the piston covering the injector is much less than 1ms so the injector has to get going before the exhaust closes, the injection cycle would probably have to start well before BDC.

Another issue would be the pressures, fuel injectors typically run around 3 bar or 43 psi so if the piston is compressing the air in the cylinder after the exhaust port has closed and the injector is trying to squirt more fuel in I am not sure if much more would actually get in after the cylinder pressure started to rise.

[husaberg]

Well, we tried and tried, but couldn't get 70 hp, let alone 30k, so we put a 2nd engine on and it was a lot better. Based on that we are now going over to a 4 cylinder. Hope there's no man hole covers this time !!!!!.

...........................................

[Frits Overmars]

Swist F5D RC Pylon Raver 200mph+? 38,000rpm

That video was short & sweet. Here's another one, a bit longer, from an F3D pylonracer: 6,5 cc, methanol, glow plug, only 33.000 rpm (it's an old video).
The guy with the white earmuffs in the video (me) radargunned it midcorner at 346 kmh (215 mph) http://www.youtube.com/watch?v=5aBCQGq5Al4