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pchap(at)primus.ca
Guest

Posted: Sat Feb 06, 2010 5:22 pm Post subject: Recommended Letter-writing campaign, follow-up

As for the 601XL maneuvering speed issue:



Yes some pilots may not be so aware of it.

But if that were a significant part of the breakup issue, as with 

other things, one would think other planes might have problems too.



Any slow landing but slightly slippery plane -- like many of the 

European LSA designs -- might have the maneuvering speed issue.



If max G is 4, the any plane able to fly more than twice its stall 

speed (flaps up) will be able to fly past maneuvering speed.

(2.1 times for a 4.5 g airplane).

(All this is at gross, with the maneuvering speed reducing if under gross.)



Just pointing out a sometimes forgotten aspect of maneuvering speed.



One also does wonder to what degree the stick forces really are any 

lighter than for other light planes. And whether the XL tends to 

operate closer to the aft end of the CG envelope than other aircraft, 

increasing how common it is to have light stick forces. But that's 

just musing from someone who doesn't know the aircraft well.



It's all part of the idea that the XL does have some caveats for 

flying it where an unaware pilot could break it, yet one wonders why 

it hasn't happened to other light planes that might have similar 

characteristics.



Peter Chapman

Toronto, ON           601 HDS  /  912  /  C-GZDC

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daveaustin2(at)primus.ca
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Posted: Sat Feb 06, 2010 7:48 pm Post subject: Recommended Letter-writing campaign, follow-up

Has enyone correlated the installed engines in the 601 HD and HDS versus the 

engines in the XL?  I get the feeling that XLs generally are higher powered.

Could that be a factor in the crashes?

Dave Austin

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larry(at)macsmachine.com
Guest

Posted: Sun Feb 07, 2010 7:08 am Post subject: Recommended Letter-writing campaign, follow-up

Dave,

Most of the XL engines are Rotax, Corvair and 0-200s, which is not 

different from the ones used in HD series.

They fly a bit faster with the thin wing, but that's about it.



Larry McFarland 601HDS at www.macsmachine.com



Dave Austin wrote:

 	  Quote: 	
		   



 Has enyone correlated the installed engines in the 601 HD and HDS 

 versus the engines in the XL?  I get the feeling that XLs generally 

 are higher powered.

 Could that be a factor in the crashes?

 Dave Austin

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s.clive.richards(at)homec
Guest

Posted: Sun Feb 21, 2010 5:04 am Post subject: Recommended Letter-writing campaign, follow-up

Testing  e mail  I tried to send earlier Mat has now unblocked me

Clive

do not archive

---

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