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Effective Gross Weight

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dgraham7(at)TWCNY.RR.COM
Guest

Posted: Sun Apr 04, 2010 9:09 am Post subject: Effective Gross Weight

When I bought my Zodiac 601 HDS from the builder,  he mentioned to me the concept of

 "effective gross weight". I think he mentioned that  it was 1050 pounds. We had a lot of

 other things to talk about so I did not get back to  the topic to ask more about it.

 I notice that on the Zenith website, that even  though the gross weignt for the HDS is

 listed at 1200 pounds, the figures for stall speed  and climb are listed using 1050 pounds.

 Does anyone know more about this  subject?

 Regards,

 Damien

    [quote][b]

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pchap(at)primus.ca
Guest

Posted: Sun Apr 04, 2010 6:09 pm Post subject: Effective Gross Weight

At 13:08 04-04-10, you wrote:



  	  Quote: 	
		  When I bought my Zodiac 601 HDS from the builder, he mentioned to me the concept of

 "effective gross weight". I think he mentioned that it was 1050 pounds. We had a lot of 	
[...]

  	  Quote: 	
		  Damien 	


 I can't recall for sure, but I think it went something like this: 



 Back in the day the orignal 601 was only designed for 1058 lbs, sometimes rounded off to 1050 lbs. I think the Canadian Advanced Ultralight class was then also only 1058 max (480kg) before later going up. As Zenair upped the strength of the HD to match the new 1200 limit, and later built the HDS for 1200 lbs as well, they just kept on using 1050 as an old standard for quoting performance. E.g., even in the well-known Popular Mechanics article of 1997, for the HDS they stated 1200 gross, but showed performance for "800 lbs (Solo)" and "1050 lbs (Dual)".  



 So for the HDS I don't think there's any reason to think of 1050 as any sort of physical limit. 



 

 Peter Chapman

 Toronto, ON           601 HDS  /  912  /  C-GZDC    [quote][b]

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dgraham7(at)TWCNY.RR.COM
Guest

Posted: Tue Apr 06, 2010 5:29 pm Post subject: Effective Gross Weight

Thanks Pete. That is just what I was looking  for.

 Regards,

 Damien

 DO NOT ARCHIVE

 [quote]   ---

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