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601 copies or vice versa

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rdewees(at)mindspring.com
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Posted: Sun Nov 05, 2006 9:21 am Post subject: 601 copies or vice versa

 	  Quote: 	
		  

 Brad-- in the short run I tend to agree with you but aren't you glad that customers of the Robbins Bebe Jodel did't say the same thing?  There wouldn't be a viable Zenith Aircraft Corp.  Chris was less established and experienced than the designers of the Jodel.  Sometimes newer IS better. BTW the Jodel D9 has a stall speed about 15 mph lower than the metalized CH series.  I think aircraft history is full of similar designs. Some make it to the marketplace and most don't.

   

Ron DeWees
	


 	  Quote: 	
		   Time: 07:47:10 AM PST US

 From: Rosalie DeMeo <rosestar(at)sonic.net>

 Subject: Re: Re: 601 copies or vice versa?



 



 Why mess with a copy when you can buy the real deal?  Safety and 

 experience are my primary concern.  I would rather by from Chris Heintz' 

 company than any copycat.  If the copycat would shortcut design and 

 research steps, what else has he shortcutted? 



 Brad

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grs-pms(at)comcast.net
Guest

Posted: Sun Nov 05, 2006 3:09 pm Post subject: 601 copies or vice versa

Just to throw a little actual history into this discussion:



The Bebe Jodel (Jodel D-9) was designed by a couple of Frenchmen, Joly and

Delamontez, just after WW2.  It was a single place all-wood, low wing, open

cockpit taildragger.  The original power plant was a 25hp VW engine left

behind by the Germans.  Hundreds were homebuilt and some were produced by

small factories.  Plans are still available.  Avions Pierre Robin built a

series of derivatives of the Jodel D-11, which was a wooden 2-place

side-by-side cabin airplane.  Both the D-9 and D-11 had a flat center

section with sharply tapered upturned wingtips and an all-movable vertical

tail.



Pierre Robin switched to all-metal construction with the HR100, a two-place

side-by-side low wing cabin airplane which did not look like a Jodel.  It is

my understanding that the "H" in the designation stood for Heintz, since

Chris was the designer.  When Chris moved to Canada he designed the O-200

powered CH200 and it's derivatives, the CH250 and 300 as homebuilt

airplanes.  These airplanes had a strong external resemblance to the HR100.



The CH 601 series has only a general resemblance to the earlier CH200 series

and many features of the internal structure are different.  The one design

feature that relates the CH series to the early Jodels is the all movable

vertical tail.  (Some of the later Robin-built Jodel derivatives had a fixed

vertical fin.)



The point here is that the CH601XL is a long way from the little Bebe Jodel,

and comparisons between the two don't mean much.



George



Do not archive



---

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rosestar(at)sonic.net
Guest

Posted: Mon Nov 06, 2006 7:40 am Post subject: 601 copies or vice versa

I agree.  But I think the difference is a scientific and kowledgeable 

approach to improving designs for a certain purpose.  I use the term 

copycats because some just aren't thorough or educated enough to improve 

the design.  For instance, street rodders can make a muscle car go 

faster, but fail to work in safety elements in the process.   With 

airplane design, I think the risks are too great.  When I chose the 

Zodiac, I did my due diligence to find out the designer's background.  I 

am following the plans.  Science will always seek to improve current 

knowledge.  It's the process that I trust, or distrust.



Brad

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