Cessna Anticipates AvGas Demise

Matt Whiting wrote:

I don't plan to buy one so I have no need to do the math. If you want
to prove a point, you do the math.

*I* don't want to prove anything. It was you who claimed that the life
span of the Thielert was too short to be competitive.

Larry Dighera wrote:

So, are you saying that the FADEC will command a reduction in engine
power to reduce heating as the high-temp limit is approached?

I'm not absolutely sure on this, but I don't think so. I think it just
has an extremely efficient cooling system (overkill, so to speak) which
is regulated by FADEC, i.e. reduced to keep the engine temperature high
enough.

Of course I believe that if one really tries, one *will* find a way to
kill the engine. E.g. the POH forbids a sustained power setting of more
than 75%. Or, as others have pointed out, remove the coolant before
flight. Or if nothing else helps, take a sledge hammer.

In article ,
Matt Whiting wrote:

Roy Smith wrote:
Matt Whiting wrote:

It's fully FADEC controlled, so no overheating possible.
Automobile engines have been digitally controlled for two decades and
they still can overheat.

Yes, but they don't overheat because somebody set the wrong combination of
three different knobs.

What part of "so no overheating possible" didn't you understand? That
statement is simply factually incorrect.

Matt

Taken literally, the statement, "no overheating possible" is indeed
incorrect. But, FADEC still gives you a protection against most of the bad
things people do to engines through poor technique.

Stefan wrote:
Matt Whiting schrieb:

Drain the coolant and go flying. Tell me how long the FADEC prevents
the engine from overheating.

Yawn. Dry the oil and go flying.

So, you finally admit that the FADEC can't prevent overheating.

Matt

Roy Smith wrote:
In article ,
Matt Whiting wrote:

Roy Smith wrote:
Matt Whiting wrote:

It's fully FADEC controlled, so no overheating possible.
Automobile engines have been digitally controlled for two decades and
they still can overheat.
Yes, but they don't overheat because somebody set the wrong combination of
three different knobs.
What part of "so no overheating possible" didn't you understand? That
statement is simply factually incorrect.

Matt

Taken literally, the statement, "no overheating possible" is indeed
incorrect. But, FADEC still gives you a protection against most of the bad
things people do to engines through poor technique.

No question about it. That wasn't the statement made, however.

Matt

Stefan wrote:
Matt Whiting wrote:

I don't plan to buy one so I have no need to do the math. If you want
to prove a point, you do the math.

*I* don't want to prove anything. It was you who claimed that the life
span of the Thielert was too short to be competitive.

No, I never claimed that.

Matt

Matt Whiting wrote:

*I* don't want to prove anything. It was you who claimed that the life
span of the Thielert was too short to be competitive.

No, I never claimed that.

Matt

You wrote:

Yes, this may be the case, however the TBR has to get closer to 4,000
hours than to 2,400. Most auto and truck diesels will last at least
twice as long as similar size gas engines, so with Lycs and Contis
lasting 2,000 hours fairly routinely, the Thielert needs to at least
double that ... unless the replacement cost is equivalent to an
overhaul of a Lyc or Conti.

Matt

Of curse I did completely misunderstand you. No, please don't explain.
It gets boring.

Matt Whiting wrote:

Drain the coolant and go flying. Tell me how long the FADEC prevents
the engine from overheating.

Yawn. Dry the oil and go flying.

So, you finally admit that the FADEC can't prevent overheating.

FADEC can't prevent to become a moron, either.

"Matt Whiting" t wrote


I didn't see any details on their web site, but if they use a hydraulic
coupling then that should isolate the prop during a strike assuming proper
design of the hydraulic drive. There is likely though some loss of
efficiency as I don't know of any hydraulic drives that are 100%
efficient.

I read that a clutch protects the engine from prop strikes, and a harmonic
dampener isolates torsional harmonics. I take that to mean an isolation
rubber dampener, as is common in industrial motors and transmissions.
--
Jim in NC

"Morgans" wrote in news:lX9Oi.32$Mx6.29
@newsfe05.lga:


"Bertie the Bunyip" wrote

You try letting the coolant out?

That would definitely make it easier!

Only you would think of doing that. ;-))

Well, the manufacture hopefully would, but being German they would probably
say "this cannot happen"

Bertie