[NSRCA-discussion] Weight

James Oddino joddino at socal.rr.com
Wed Jun 3 20:39:17 AKDT 2009


Dave, have you got a bigger plane on the drawing board to take  
advantage of the full 5 Kg allowed or if you were about to design a  
new plane would it be any different (bigger) if the limit was 5 or 5.5?

Jim


On Jun 3, 2009, at 8:30 AM, Dave wrote:

> Bill,
>
> Starting from the position of a well designed plane (with proper wing
> loading), adding weight will not provide an advantage.  What the  
> weight
> limit rule does is limit the size the plane - larger planes will fly  
> better
> which does provide an advantage.
>
> The historical vs current perspective on this discussion point  
> (which is
> well covered in the archives) boils down to this -
> - in the mid 1990s, planes with 2M wingspans and fuse length were  
> common,
> and none are competitive today.
> - there is a difference between a skinny 2M plane of the past and a  
> large 2M
> plane of today...the larger plane flies better.
> - allow the weight of planes to increase, and you will see even  
> larger 2M
> planes (increased cost and complexity) that will obsolete the  
> current crop
> of planes.  This would not seem to be favored by anyone, and making  
> the
> event more expensive will further limit those that can afford the  
> event, and
> reduce numbers in the event.
>
> Regards,
>
> Dave
>
>
>
> -----Original Message-----
> From: nsrca-discussion-bounces at lists.nsrca.org
> [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of  
> Bill's Email
> Sent: Wednesday, June 03, 2009 11:06 AM
> To: General pattern discussion
> Subject: Re: [NSRCA-discussion] Weight
>
> I guess I should make a couple of things clear. First, I am not really
> trying to argue one way or the other, it was just something that  
> struck
> as interesting. I left out structural weight and such for the sake of
> simplicity.
>
> I have no personal ax to grind, I fly an electric that is absurdly  
> light
> so I am not trying to do anything there.
>
> I guess the real question is, what is the objective of the weight  
> limit
> rule in the first place? Is there an advantage in being heavier??
>
>
>
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