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Would be interesting to see it in a pipistrel panthera. That would be the ultimate efficiency airplane.

Love the engine and its design, but if price is about 100K is incredible out of price from what was stated as a goal price by deltahawk... which whas about half that price.

TBO? When are you going to let a third party verify the efficiency of the engine?

That was nine months ago. You’re probably in the DHK180 now, so how do you like it?

Seems to me that is you combined an electric motor on the engine shaft that would assist compression stroke and produce more power and increase rpm

Would this engine fit on a 1956 Cessna 172 ❓ Would one need a redrive on it ❓

Has the guy even installed the engine yet😮

Very complicated…turbo and super charged. That’s crazy

I'm anxious for actual info to released. Why a V4? Why inverted? It's a 2 stroke diesel with a turbo..... but why does there also appear to be a rotary lobe blower underneath? How is this engine going to be better than the traditional horizontally opposed 4 strokes? There are way less parts with a 2 stroke and no need for ignition with diesel.... but they burn dirty and loud. Come on, spill some actual info for us.

I would like to know how the oiling system works. How the Scavenging works. If the engine is inverted with the cylinders down wouldn't oil collect in the cylinders if not used for a while? Like a radial engine? Would you have drain the cylinders before starting? I would rather mount it up right.

WTF ?

This is incredible, so glad this project is moving forward. Godspeed!

Test a DHK235 on Ravin 500 . Would love to know the specs, specially the ferry range . 3000Nm a dream come true. 🙌

Are you actually going to start selling engines soon Delta?

Ill never need this because I have a 1999 Rav4 that does 0 > to 60 in under 30 mins.

i want it in my truck

4 cylinders, 2 stroke pressure scavenged engine. Firing order 1-2-3-4. Direct Injection 4 independent pump lines.

What about other homebuilts that require less horsepower?

‘Loving the weight reduction effort.

Is it a two stroke?

How much horsepower does your engine generate?

Good to see some real, tangible innovation in the aero engine space - one of the few examples of progress that doesn't seem to be vapourware. Looking forward to seeing where this goes

Whats the update on say Cessna 172s and 182s getting operational with your DeltaHawks?

How about an OP/OC Double Acting 2stroke engines and maybe even add Sleeve Valves

This project is a result of the active use of imagination.General Aviation has just been brought back to life.

Honestly helps my 3 crank -crank damper argument w engine.

My friends were so sick of me talking about this engine for the last 15 years. I thought the Delta Hawk team were on the right track. Direct drive, mechanical fuel system, turbo charged, supercharged, no valve train, no ignition system, clean looking installation low frontal area, (liquid cooled) so no shock cooling, and most importantly no fadec. I have always subscribed to the philosophy that once an engine is running as long as it has fuel and air and the throttle is held open it should continue to run! Ne electrical power required. This is a game changer for aviation. As a Canadian aviator I look forward to a cabin heater core, rather than a heat muff, safer with more heat available. I'm hoping there is an immersion type block heater, engine preheat for winter operations. Congratulations Delta Hawk !!!!!

CLEAR! There, I did it for you.

You would need to sell a lot of engines to pay off 20 years of development costs.

When can we expect a 172 or 182 privately-owned and operational "out in the wild" with a Deltahawk?

If it takes Jet A it is NOT a diesel. Jet A is AVIATION KEROSENE.

I wonder if this can be made in a Jumo diesel engine configuration to increase efficiency even more? 🤔

Diesel rox!

actually, their early prototype DID have 200hp and an even higher torque rating- one of these was placed in an experimental aircraft. it had one piece cylinders / heads. very powerful engine.

to those of you worried about the weight- the DHK180 delivers 363 Ft. Lbs. of torque @ 2600 rpm's. the io360 produces an ESTIMATED 389 ft. Lbs. - I say estimated because both lycoming & continental flat REFUSES to publish those numbers. guessing them from a formula will NOT yield accurate results in real world performance. HOW do I know this? simple experience and common sense. you cannot compare the performance of an engine with a 26 to 1 compression ratio and a squared stroke to bore- with an engine that has a 7 to 1 compression ratio, A 4.25 bore & a 3.5" stroke. they are two different animals with 2 completely different performance curves. ANYONE who's ever ridden in a chevy 1 ton with a 454 v8 will tell you that it's a great engine- if you want to go cruising. but hook 13k Lbs. of trailer behind it? a dodge cummins with less rated HP & way less engine cubes will walk all over it. plug THAT into your stupid equation. the difference? DIESEL. high compression, high RATED torque. gas engines perform well where high hp, rapid acceleration and a broad power band (again- hp) are good- like racing. what do big rigs use? DIESELS. why? because diesels LOVE to be strained- LOADED- and then operate at a set speed, ALL DAY LONG- aka- 80k lbs at 55mph.. ALL DAY LONG. INTERNESTING. what do planes need? 2600 rpm's... without slowing down, even under high load... ALL DAY LONG. the DHK180 was bred, born and BUILT for that. DIESEL. the lycontisaurus lawn mower engines? DISMALLY INADEQUATE for it. air cooled? FAIL. low compression? FAIL. horrible efficiency? FAIL. I am REALLY going enjoy watching this engine rise to the top. KUDOS to dennis & wife for their wonderful work in bringing GA into the 21st century.

gemini diesel looked promising... then quite mysteriously... it was bought- and SHELVED. hmmm... now let's see- who would want to keep a LESS reliable eninge, that uses A LOT more fuel... thriving & on top? all I can say to dennis? KUDOS. for not taking what I am ABSOLUTELY POSITIVE would've been a HUGE bribe (the ignorant would say 'buy out offer') and also plenty of threats... and still stood his ground. you & elon musk now have something in common- you both kicked the big oil monster in the teeth & lived to tell about it. we thank you sir- for you efforts & your contribution- and we look forward to your future engines.

Beautiful engine. Fabulous performance. Dearly need that 235 Hp variant to make up for the weight, though….

These are VERY interesting engines. I waiting to see how the turbo 235 performs this class of airframes, primarily say a Glasair Sportsman 2+2? Then the various six cylinder versions when they get get released. Fascinating developments.

I thought ol’ Zoomie was banned from the SnF grounds for acting like a lunatic. Is he on meds now?

now get them in every plane :))

put them in everythinggggg

nice engines,,, now get them in everything :)))

One day, I would love to replace the 225hp, E225-8 Continental in my 1950 Bonanza, with a 235hp DeltaHawk.

RV14 Jet A About time, can’t wait for the release

What about the Velocity V-Twin for DeltaHawk as there is already one running

This is awesome! Glad to see the future is now!!!👏🏼👏🏼👏🏼🇺🇸🇺🇸🇺🇸

If the engine is as good as is said, you'd think the company is likely takeover candidate.

fine job :))

Made in USA…and jet fuel! About a hundred pounds too heavy for the Cozy MkIV without a ton of re-engineering of the Cozy’s structures and aerodynamics, so I’m out. But, congratulations!

Now make it v12 😎