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05-24-2012, 10:32 AM
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Join Date: Oct 2005
Posts: 1,516
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Lycodile evolution
Evolution takes time.
I must agree with the Lycodile analogy.
For the few shortcomings of the highly evolved Lycoming
no other, imitation or alternative has come even close to today's Lycoming.
It has even adapted well to a new diet of ethanol mogas.
Even according to an old post by rv6ejguy, the alternative engine does not like leaded gas and needed a top end overhaul at less than 400 hours.
Just wanted to bring this exciting thread back on its track.
__________________
Ernst Freitag
RV-8 finished (sold)
RV-10 Flyer 600 plus hours
Running on E10 mogas
Don't believe everything you know.
Last edited by N427EF : 05-25-2012 at 01:50 PM.
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05-25-2012, 08:58 AM
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Join Date: Feb 2006
Location: Sherwood, Oregon
Posts: 236
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Buggsy2,
Quote:
Reading this thread for this first time this got my attention. I wonder what the author is trying to say. Newton figured out that Force = Mass * Acceleration, so the statement
Quote:
Quote:
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if you double?the rate of acceleration, you quadruple the force
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is not true.
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Yup, F = MA.
And, A = dV/dT
"Rate of acceleration" is somewhat imprecise, but what the author likely meant, considering he was discussing inertial strain in an engine, is that tensile strain increases as the square of RPM. When RPM is doubled, dV is doubled, and dT is halved.
Engine books the world over note this squared relationship between RPM and tensile strain. It's been tested with strain gauges. 
__________________
Dog is my co-pilot.
Ted Johns
RV9 emp & wings
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05-27-2012, 03:50 PM
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Join Date: May 2012
Location: Germany
Posts: 6
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Quote:
Originally Posted by Captain Avgas
Well Herman, the Dodo was actually a bird that was so overweight that it couldn't get off the ground which is what ultimately led to its extinction.
So in that regard it would appear that all of the obese GA aero-diesel engines that have appeared and then promptly become extinct in recent decades have more in common with the Dodo than the excellent power to weight ratio Lycoming which is still very much alive and thriving.
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Errr,
the Dodo was a bird that could only evolve in such a fatal way because it had a MONOPOLY
Wich ist what Lycosaurus and the likes enjoyed thus far. When said monopoly ended.....
So far the monopoly is still being enforced through massive papwerork costs.
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05-27-2012, 05:59 PM
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Join Date: Apr 2005
Location: KSLC
Posts: 4,021
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Quote:
Originally Posted by Hermanthegerman
Errr,
the Dodo was a bird that could only evolve in such a fatal way because it had a MONOPOLY
Wich ist what Lycosaurus and the likes enjoyed thus far. When said monopoly ended.....
So far the monopoly is still being enforced through massive papwerork costs.
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I wouldn't want an automated "mixture" control, if it was given to me. I've always flown from higher altitude airports, in which using the mixture knob is a way of life. I prefer making the adjustments that I want, versus a machine doing it from someone elses programmed..... thoughts.
L.Adamson
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05-27-2012, 06:44 PM
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Join Date: Oct 2005
Location: Melbourne, Australia
Posts: 1,868
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Quote:
Originally Posted by Hermanthegerman
Errr,
the Dodo was a bird that could only evolve in such a fatal way because it had a MONOPOLY
Wich ist what Lycosaurus and the likes enjoyed thus far. When said monopoly ended.....
So far the monopoly is still being enforced through massive papwerork costs.
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I have observed that an opinion on VansAirforce tends to carry more weight when the author puts his name to his post.
__________________
You’re only as good as your last landing 
Bob Barrow
RV7A
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05-27-2012, 06:59 PM
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Join Date: Aug 2011
Location: AZ
Posts: 186
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Quote:
Originally Posted by Captain Avgas
I have observed that an opinion on VansAirforce tends to carry more weight when the author puts his name to his post.
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I could be wrong but I think it might be Herman. And I think he might be German. 
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05-27-2012, 10:21 PM
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Join Date: May 2008
Location: Brisbane Qld. Aust.
Posts: 2,271
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Quote:
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I have observed that an opinion on VansAirforce tends to carry more weight when the author puts his name to his post.
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Try Playing the BALL and not the MAN when reading any forum.
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05-28-2012, 07:47 AM
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Join Date: Oct 2005
Location: Melbourne, Australia
Posts: 1,868
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Quote:
Originally Posted by RV10inOz
Try Playing the BALL and not the MAN when reading any forum.
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I'm a great believer in the theory that if everyone put their name to forum posts we would in fact have a lot more civility and a lot less rash statements.
__________________
You’re only as good as your last landing 
Bob Barrow
RV7A
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05-28-2012, 10:03 AM
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Join Date: Jan 2005
Posts: 112
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It would even be better if everybody who posted on this forum also contributed $25 to Doug's Vans Airforce, don't you agree Captain?
Barry Ward RV6a F PRVM
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05-28-2012, 06:33 PM
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Join Date: Oct 2005
Location: Melbourne, Australia
Posts: 1,868
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Quote:
Originally Posted by Barry
It would even be better if everybody who posted on this forum also contributed $25 to Doug's Vans Airforce, don't you agree Captain?
Barry Ward RV6a F PRVM
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I agree 100%, but $50 would be even better. A list of those who have contributed so far this year can be found here. http://www.vansairforce.net/2012_Donators.pdf
It's a bit off subject but a quick check of those who have contributed in 2012 indicates that only roughly 100 members a month are making a contribution (1200 for the year at that rate). That's a disgracefully low number considering that there are over 15,000 registered members. I don't think that Doug Reeves will be joining the Forbes 400 list anytime soon.
__________________
You’re only as good as your last landing 
Bob Barrow
RV7A
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