The Duke Engine (VERY COOL)

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ken572
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Joined: Sun Mar 14, 2010 8:11 pm
Location: Mesa, Arizona. 85201-1517

The Duke Engine (VERY COOL)

Post by ken572 » Thu Sep 04, 2014 1:21 pm

One must remember.
The best learning experiences come
from working with the older Masters.
Ken.

JackF
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Location: Caldwell, Idaho

Re: The Duke Engine (VERY COOL)

Post by JackF » Fri Sep 05, 2014 11:27 am

Vellly interesting. :lol: Where do you find these things?

Jack.

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ken572
Posts: 2600
Joined: Sun Mar 14, 2010 8:11 pm
Location: Mesa, Arizona. 85201-1517

Re: The Duke Engine (VERY COOL)

Post by ken572 » Fri Sep 05, 2014 2:43 pm

JackF wrote:Vellly interesting. :lol: Where do you find these things?

Jack.
Hello :!: Jack :D

I guess I just enjoy letting my retired mind wander

on the internet, and every now and then I find some

really cool STUFF to share.. 8) :lol: :lol:

Ken. :)
One must remember.
The best learning experiences come
from working with the older Masters.
Ken.

magic9r
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Joined: Thu Mar 23, 2006 6:30 pm
Location: Sheffield, England

Re: The Duke Engine (VERY COOL)

Post by magic9r » Fri Jan 02, 2015 6:06 pm

Their power output rather than being impressive is a bit '80s when 100BHP/Litre became something of a standard for a mid to high performance engine.
I'm always impressed that people are impressed when manufacturers tell them something is impressive ;-)

Gregc
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Joined: Tue Mar 21, 2017 10:44 pm

Re: The Duke Engine (VERY COOL)

Post by Gregc » Wed Mar 22, 2017 4:00 pm

Actually I think this one is even cooler

http://liquidpiston.com/

Magicniner
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Joined: Thu May 30, 2013 4:40 am

Re: The Duke Engine (VERY COOL)

Post by Magicniner » Fri Mar 24, 2017 12:45 pm

Gregc wrote:Actually I think this one is even cooler

http://liquidpiston.com/

The drive train with 2 chains at 21 seconds shown being assembled is not the one shown running at 37 seconds, why would they do that and not explain it unless there was something funny going on?
No mention of emissions - that's because rotary engines have always been very powerful for their size/weight but have filthy emissions, this can be resolved by feeding the dirt back into the engine but that kills the power/efficiency ;-)
Maybe they should get together with Moeller Sky Car and Coates Rotary Valve Engines and build a Greater Than Unity Efficiency Machine, the same investors would probably like that too :D

Herb Kephart
Posts: 3
Joined: Fri Apr 07, 2017 4:05 am

Re: The Duke Engine (VERY COOL)

Post by Herb Kephart » Tue Dec 19, 2017 8:15 pm

The downfall of most of these rotary engines is lubrication between the valve plate, and whatever rotates against it. Enough lube to prevent seizure and you get excess oil consumption, if not, seizure eventually occurs. Back on the 60's, I made some prototype parts for the inventor of a variable compression barrel type engine- inventor Gerald Haddon. The only barrel type engine that showed any promise was one that used Ford valves (and pistons, if I remember) and was liquid cooled. It passed FAA tests and was approved for helicopter usage, with the main shaft vertical, but didn't show enough advantages to attract any Heli manufactures.

Herb Kephart

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