the clean two-stroke thread

[husaberg]

Mr cool is the vice president.
i was looking up the bladon bros the other day there were the go to people for Aemacchi racing engine parts
they are dong mini turbines as range extenders

Bladon Jets

https://en.wikipedia.org/wiki/Bladon_Jets

https://www.bladonmt.com/

[lohring]

Below is a really clean two stroke. (may be actually a four stroke)

LOL

Lohring Miller

https://external-preview.redd.it/Tk7...=webp&281c22f6

[Vannik]

https://www.carthrottle.com/post/maz...r-some-reason/

[husaberg]

https://www.carthrottle.com/post/maz...r-some-reason/

Neels they seem to have added valves to it...

[ceci]

I'm excited that KTM has decided to drop the use of the carb on most 2-Strokes.

For 2023 only the small 2-Stroke models "85SX, 65SX and 50SX" will use a carburetor.

When the small 2-Stroke engines stop using the carburetor, it will be the revival of the 2-Stroke, since its use will be implemented beyond off-road (many countries have laws "power limits to 11KW or 15CV" that would benefit the small 2-Stroke).

The question is: KTM will be interested in negotiating with whoever may have the solution or, on the contrary, will wait to obtain it as it obtained the TPI.

[Haufen]

Seems like the Yamaha-Minarelli engine from the top of the page has achieved Euro-5 homologation in the meantime.

https://www.motorcyclesports.net/art...ro-5-compliant

from the article:

The bikes are set to hit the European market in the summer of 2023, however, while their main focus will be for the trails and off-road courses, there’s a chance that you could ride this bike from your home all the way to the trails. That’s right, the new 300cc two-stroke engine in the upcoming Fantic XE has managed to acquire Euro 5 homologation.

[Haufen]

It is assumed, that this engine fires every engine revolution

https://www.deltahawk.com/engines/#technology

[husaberg]

It is assumed, that this engine fires every engine revolution

https://www.deltahawk.com/engines/#technology

it was brought up in another thread a few years back someone on kb knows someone involved...

https://www.kiwibiker.co.nz/forums/s...post1131199545

https://deltahawk.com/

One of the lead designers is on this forum

[Vannik]

It is assumed, that this engine fires every engine revolution

https://www.deltahawk.com/engines/#technology

It was for the designer of this engine that I added the sequential turbo / super option in EngMod2T.

[husaberg]

It was for the designer of this engine that I added the sequential turbo / super option in EngMod2T.

You're not giving much away......

[Vannik]

You're not giving much away......

He is a member here, he can reveal more if he chooses, not my place to do so.

[husaberg]

He is a member here, he can reveal more if he chooses, not my place to do so.

Can you remember what either Mike Costin or Ken Duckworth proposed as the silly end of turbo charging rules it was some like using a engine for a air pump to start a jet turbine or similar i was trying to find iwhat he said but it seemed very similar to a rocket antilag.

[Vannik]

Can you remember what either Mike Costin or Ken Duckworth proposed as the silly end of turbo charging rules it was some like using a engine for a air pump to start a jet turbine or similar i was trying to find iwhat he said but it seemed very similar to a rocket antilag.

Sorry no I do not.

[Niels Abildgaard]

Some austrians get paid to devellop a twin two stroke range extender for electric cars.

https://www.fvt.at/ka/en/references/...er-engine.html

The Text states that only blower longitudinal scavenging will allow charge control good enough for three way catalyst.
For a multicylinder it is simpler to slush a lot of oil around in crankcase,but I dream single cylinder/inverted V2 ,sidevalved,crankcase scavenged,catalyst equiped ligth aircraft engines.
If someone know where Ken Seeber of Orbital can be contacted he can maybe explain if and why the austrians claim is true?

https://cdn2.imagearchive.com/homebu...0dfdbd84a2c003

Picture show that the volume of installation or mass is not the same for crancase and blower feed.

[ken seeber]

Neils, this is me Ken Seeber, more commonly known as Kensational.

It is over 22 years since I last worked at Orbital. As you are probably aware, the key feature of the technology is the use of a 2 fluid fuel injection system. A small compressor, around 1/20 th of the engine displacement is used to both propel and atomise the metered fuel into the cylinder. This atomisation is also adequate to allow the engine to run on heavy fuels such as Jet Fuel A, pretty much the same as kerosene. From what I understand, this is a logistical requirement, allowing the military to use the same fuel in all mobility applications, eg jeeps, tanks, planes boats, personnel carriers etc.

In Orbital’s case for UAV applications, the engine is of 50cc but I think they might also do more powerful and multi cylinder versions, but only guessing here. Being a developed DI system, this would offer a light weight powerplant with a relatively good fuel consumption. And possibly better emissions, but that would not be a factor with today’s wartime troubles.

https://orbitaluav.com/

Had a look at the details of the range extender engine. Not too sure on your level of interest in this. For me however, it looks complex, heavy, expensive and undeveloped. If I was looking at a range extender system, it’d be hard to go beyond something like a Chinese copy of something like a 6 hp Honda GX200. In Awestralia, one can buy one of these (commonly referred to a Chonda) retail for <$200 retail. Hard for me to say, given my passion for 2 strokes, in my case, ported and crankcase, or DCI inducted.