Mailing List lml@lancaironline.net Message #64233
From: Abe Gaskins <abe@mgmindustries.com>
Sender: <marv@lancaironline.net>
Subject: Re: [LML] Re: stalls
Date: Mon, 28 Jan 2013 16:18:25 -0500
To: <lml@lancaironline.net>
I respectfully disagree.  I snapped hard with an instructor when attempting to only stall.   When I stalled the plane I think the electronic turn-and-bank, i.e., Chelton, was not calibrated.  No matter if the ball was centered--it wasn't.  

 If you are dead set in stalling a Legacy, I think the advise to do it with an instructor,  is good advise.  I would do it with an instructor that has done it on many different Legacy's: not just an instructor who has done it in a C-172.  


The difference might be subtleties in the build of each and every amateur built airplane.  For example, if one wing is set as a slightly different angle of attack, what does that do to the stall characteristics? What if the next Legacy built does not have an adequately calibrated turn-and-bank indicator?  What is some other builder induced manufacturing technique results in strange stall characteristic   

I don't guarantee anything when there are no manufacturing standards to which to build.    

(1200 hour pilot,  50+ hours acrobatics in a Yak 18T .  I humbly say that I am not a top gun and I have limitations.   I am a Mechanical Engineer which means I have a somewhat analytical  approach to things, but does not mean I know shit about airplane design,  nor do I have authority to overide any comments regarding stalling a Legacy, nor to I want to.   Just want to see safe flying.)

Abe Gaskins
MGM Industries
Direct line 615-265-2046
Cell 615-642-2310           Skype Name: abe.gaskins
"Choose a job you love, and you will never have to work a day in your life."--Confucius 
"I have never let my schooling interfere with my education"--Mark Twain 
"Travel is fatal to prejudice, bigotry, and narrow-mindedness"--Mark Twain


 


On Mon, Jan 28, 2013 at 2:25 PM, Taylor, David <dtaylor@crescentpark.com> wrote:

I am in the pro-stall camp with Bill Bradburry. 

 

The Legacy stalls just fine and DOES give some warning.  To recover you simply get the stick forward and put a little rudder in the direction of the wing drop which you do naturally anyway.  Again THE LEGACY IS COMPLETELY SAFE AND STALLS VERY PREDICTABLY.  I have practiced this many times.  It is a little scary the first few times.  Get an  instructor to walk you through it if needed.

 

Incidentally you are not really fully stalling the airplane – all you are doing is getting some air separation off one of the wings and it drops (the wing is a safe high performance design and air separates partially and progressively – VERY SAFELY!  (It does happen much faster than a 172 for example.)  Just get the stick forward and the wing starts flying again – in less than a second.  VERY SAFE AND PREDICTABLE!  (It is not going to snap into any spins I can guarantee you!)

 

David Taylor

Legacy Owner

 

From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of Bill Bradburry
Sent: 01-04-13-Fri 12:46
To: lml@lancaironline.net
Subject: [LML] Re: stalls

 

Bill,

 

Certainly I have stalled my Lancair.  With the ball centered, it breaks straight ahead.  When the nose goes thru the horizon, it has stalled and I recover.  As it approaches the stall, it gets mushy, there is little burble/buffet warning, but you can definitely tell it is coming because of the mushiness prior.

I needed to stall it so that I could set my AOA and ‘Bitchin Betty’ so I would get a stall warning which I think is needed but not required on experimental planes

 

There is no cause for me to talk to Jeff.  He thinks one thing, I think another.  He is welcome to his opinion and I plan to stick to mine.  I pray we all fly safe.  I see a lot of guys rolling their planes.  I have no intension of rolling mine.  In fact, I think they are nuts, but they are welcome to be nuts if they like.  Even more nuts are the guys that fly their planes into ice, which, I think, is where most of the Lancair deaths come from, not from stall training.  If you get a Lancair iced up, it doesn’t matter what you know about stalls or recovery because you are on a one way elevator.

 

My opinion is you should switch this discussion to ice and away from stalls.  There have been deaths due to stalls, the unfortunate guy at Oshkosh who got too slow on approach a couple of years ago comes to mind, but I think many more due to flight into icing..

 

Everybody fly safe. I am done with the subject.

 

Bill


From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of Bill Harrelson
Sent: Friday, January 04, 2013 1:51 AM
To: lml@lancaironline.net
Subject: [LML] Re: stalls

 

Bill,

 

Talk to Jeff. I would agree with your stall ideas in just about any airplanes other than Lancairs. They are different...very different from other airplane types and very different among samples of the same Lancair type. Neither of my Lancairs, the 320 or the IV, give any warning at all before a stall. No buffett, no burble...nothing. If you do a full stall in a IV plan for a break that will be hard and abrupt. Have you actually stalled your Lancair?

 

Please speak to Jeff privately. He has investigated far too many Lancair accidents to pass on his good advice.

 

Bill Harrelson

N5ZQ 320 2,150 hrs

N6ZQ  IV  75 hrs.

 

 

 

 

 

 

Sent: Thursday, January 03, 2013 6:03 PM

Subject: [LML] Re: stalls

 

Bill,

 

I respectfully disagree with just about everything you are saying here. Would you please contact me offline or give me you number so I can call you?

 

Jeff Edwards

324-308-6719 cell

 


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