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 Post subject: Piston-Powered Lancair Evolution?
PostPosted: 31 Mar 2016, 07:38 
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I saw this ad in the recent edition of Flying. BT's very own Doug Rozendaal wrote en excellent article on a piston-powered Evolution prototype back in 2010:

http://www.kitplanes.com/issues/27_9/fl ... 308-1.html

I thought this part of his article was both interesting and a bit scary:

"The climb through FL180 at the same 140 KIAS—but at 36 inches MP—had the fuel flow down to 25 gph and a CHT range of 345° to 469°.

Do these temps seem high to you? Well, Lycoming says that the IE2 engine can operate and survive with much higher CHTs than we are accustomed to or comfortable with. The protection provided by the elaborate sensors and precise engine control allows operations at temperatures that would destroy a manually regulated engine."

Why would "elaborate sensors" change the physics of heat and metallurgy?

This is also from 2010:
https://aerospaceblog.wordpress.com/201 ... evolution/

Note that the link at the bottom of the ad goes to a dead site.


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 Post subject: Re: Piston-Powered Lancair Evolution?
PostPosted: 31 Mar 2016, 11:16 
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best thing about the piston evolution is that they have an upgrade path for turbine swap down road for that airframe

having said that, i can't spend $1m on a plane with a piston engine


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 Post subject: Re: Piston-Powered Lancair Evolution?
PostPosted: 31 Mar 2016, 11:51 
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The KitPlanes article states that there are 5 flying at the time (2010) .

Obviously they're not flying wit the Lycoming IE2 .

That said, the specs are calling for 270K TAS @ FL250 - that is very close to the turbine but at 1/2 the fuel burn !

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Last edited on 31 Mar 2016, 14:59, edited 1 time in total.

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 Post subject: Re: Piston-Powered Lancair Evolution?
PostPosted: 31 Mar 2016, 12:49 
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Two years ago, Lancair told us that the only piston Evolution was the factory one which was instrumented as the test bed. They said that everyone wanted the turbine engine. They did quote the specs Michael posted (and the engine was at least $400,000 less).


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 Post subject: Re: Piston-Powered Lancair Evolution?
PostPosted: 31 Mar 2016, 16:24 
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Username Protected wrote:
Two years ago, Lancair told us that the only piston Evolution was the factory one which was instrumented as the test bed. They said that everyone wanted the turbine engine. They did quote the specs Michael posted (and the engine was at least $400,000 less).


You could always buy a first run -42 for the front of that plane for well under $150k outright.

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 Post subject: Re: Piston-Powered Lancair Evolution?
PostPosted: 31 Mar 2016, 16:27 
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Username Protected wrote:
Two years ago, Lancair told us that the only piston Evolution was the factory one which was instrumented as the test bed. They said that everyone wanted the turbine engine. They did quote the specs Michael posted (and the engine was at least $400,000 less).


You could always buy a first run -42 for the front of that plane for well under $150k outright.


where do you see that? i did some research and i could not find any such deals, usually, the cycles were the killer on the "core" engines available

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 Post subject: Re: Piston-Powered Lancair Evolution?
PostPosted: 31 Mar 2016, 16:30 
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Nearly all of the used engine traders have first run examples for that price. I've seen good second run ones for right at $100K with about half of their original cycles remaining. There isn't anyone in the world that could cycle out a PT6 in an experimental if they started with half life components.

There are two on Barnstormers right now that are higher time engines that should have many thousands of hours of life left in them for under $90k.

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 Post subject: Re: Piston-Powered Lancair Evolution?
PostPosted: 01 Apr 2016, 12:51 
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Username Protected wrote:
Two years ago, Lancair told us that the only piston Evolution was the factory one which was instrumented as the test bed.
They eventually got tired of waiting on Lycoming, converted that one to turbine and sold it. Now that Lycoming says the engine is ready they've done another piston Evo which will be at Sun n' Fun.


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 Post subject: Re: Piston-Powered Lancair Evolution?
PostPosted: 01 Apr 2016, 18:50 
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The engine was not sorted out when I flew it. If they have it figured out, it should be a great airplane....


The turbine is a fantastic airplane!

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 Post subject: Re: Piston-Powered Lancair Evolution?
PostPosted: 04 Apr 2016, 21:21 
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Username Protected wrote:
The KitPlanes article states that there are 5 flying at the time (2010) .

Obviously they're not flying with the Lycoming IE2 .

That said, the specs are calling for 270K TAS @ FL250 - that is very close to the turbine but at 1/2 the fuel burn !
Lancair are now quoting max speed of 240 kts at FL 250. Estimated cost is $875,000.
http://www.evolutionaircraft.com/aircra ... on-piston/


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 Post subject: Re: Piston-Powered Lancair Evolution?
PostPosted: 04 Apr 2016, 21:49 
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Overall specs are incredible but can you really run a piston motor at such high temps and get any meaningful life out of it? The range and speed are amazing!


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 Post subject: Re: Piston-Powered Lancair Evolution?
PostPosted: 04 Apr 2016, 21:51 
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I would also like to see Garmin G3X touch instead of the antiquated G900 platform.


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 Post subject: Re: Piston-Powered Lancair Evolution?
PostPosted: 05 Apr 2016, 15:31 
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Username Protected wrote:
I would also like to see Garmin G3X touch instead of the antiquated G900 platform.


suspect they have some sweetheart deal on the g900 or something, i've heard they push it hard, a lot of the newer planes are coming out with G3X touch only, such a better system (and 60lbs lighter too!)


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 Post subject: Re: Piston-Powered Lancair Evolution?
PostPosted: 05 Apr 2016, 18:37 
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Overall specs are incredible but can you really run a piston motor at such high temps and get any meaningful life out of it? The range and speed are amazing!


At that time their company line was that a pilot could not run it like that. But with the computer controlling the fuel and spark on every cylinder individually, on every revolution, the engine could survive at those temps......

But, again, it wasn't sorted out when I flew it.

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 Post subject: Re: Piston-Powered Lancair Evolution?
PostPosted: 05 Apr 2016, 22:12 
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We just got one at our field. I have not flown it yet but first hand accounts report that it's quite a machine. Almost 8 hours of fuel. I believe it's at Sun in fun now and will be at Oshkosh.

It made the local paper, you'll have to overlook some of the reporting.

http://www.gosanangelo.com/news/local/s ... 88521.html


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