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  #1  
Old 09-07-2018, 04:28 PM
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rongawer rongawer is offline
 
Join Date: Dec 2007
Location: Brentwood, CA
Posts: 324
Default AC Aero Engines

Hey folks, have you seen these? Pretty sexy looking.
http://www.ac-aero.com/jet-a/

Compression ignition V4 that weighs 137kg dry weight and makes ~350 hp, and a train engine's worth of torque (>650 ft-lbs at the prop). Looks like fun.

I've been communicating with them and thinking about this for my RV10.
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- RV10, N1530G (reserved). Empennage in progress.
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  #2  
Old 09-07-2018, 04:43 PM
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Erimo Erimo is offline
 
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Location: Marcoussis, France
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Default

About reliability ?
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RV 14A - #140252 - close to flight.
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  #3  
Old 09-07-2018, 06:00 PM
OkieDave OkieDave is offline
 
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Location: Oklahoma
Posts: 97
Default

What engine speed do you need to make that much power? That looks kinda like a gearbox up front.
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  #4  
Old 09-07-2018, 08:33 PM
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majuro15 majuro15 is offline
 
Join Date: Feb 2013
Location: Charlotte, NC
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Default

Ron, I sent you a PM. Give me a call.

Tim
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RV-10 Fuselage under construction
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  #5  
Old 09-08-2018, 06:24 AM
F1R F1R is offline
 
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Location: ____
Posts: 604
Default ANY PIREPS on the AX 50 cylinders?

Does anybody other than Kevin Eldridge have experience with the AX 50 cylinders on Lycomings yet?
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  #6  
Old 09-08-2018, 08:03 AM
rocketman1988 rocketman1988 is online now
 
Join Date: Jun 2010
Location: Sunman, IN
Posts: 1,022
Default Cylinders

I was going to use these on my -10 but, at the time, they were made of Unobtainium...
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Aerospace Engineer '88

RV-10
Structure - 90% Done
Cabin Top - Aaarrghhh...
Doors - Done
On Gear
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ShowPlanes Cowl with Skybolts Fitted - Beautiful

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  #7  
Old 09-08-2018, 11:17 AM
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airguy airguy is offline
 
Join Date: Oct 2006
Location: Garden City, Tx
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Default

Compression ignition? Certainly looks like a pair of spark plugs on each cylinder...
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N16GN flying! http://websites.expercraft.com/airguy/
Built an off-plan 9A with too much fuel and too much HP. Should drop dead any minute now.
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  #8  
Old 09-08-2018, 11:27 AM
rocketman1988 rocketman1988 is online now
 
Join Date: Jun 2010
Location: Sunman, IN
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Default Um...

It looks to be a "combined cycle" engine. Reading the literature, it seems to be a two stroke engine that burns jet A. I didn't see anything that said it was a compression ignition engine...though I may have missed it...
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Bob
Aerospace Engineer '88

RV-10
Structure - 90% Done
Cabin Top - Aaarrghhh...
Doors - Done
On Gear
290 HP Barrett Hung
ShowPlanes Cowl with Skybolts Fitted - Beautiful

Dues Paid 2017,...Thanks DR+
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  #9  
Old 09-09-2018, 09:23 AM
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rongawer rongawer is offline
 
Join Date: Dec 2007
Location: Brentwood, CA
Posts: 324
Default

It's a It is a stepped diesel which uses a spark plug for ignition and has dual plugs for redundancy. I understand they have prototypes in operation, but nothing in production yet. The design is actually over 100 years old, but his use of an integral gearbox and cooling jackets are innovative. I hope he makes it to production. It would be a very torquey engine, efficient in a lightweight package.
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Ron Gawer

- RV10, N1530G (reserved). Empennage in progress.
- RV12, N975G, Flying
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  #10  
Old 09-09-2018, 09:54 AM
rocketman1988 rocketman1988 is online now
 
Join Date: Jun 2010
Location: Sunman, IN
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Default Interesting

Interesting concept...been around for a long time. I hope he makes it work...
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Bob
Aerospace Engineer '88

RV-10
Structure - 90% Done
Cabin Top - Aaarrghhh...
Doors - Done
On Gear
290 HP Barrett Hung
ShowPlanes Cowl with Skybolts Fitted - Beautiful

Dues Paid 2017,...Thanks DR+
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