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Weight of paint affecting the C of G

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eddies

Joined: 20 Jun 2006
Posts: 40
Location: Australia

Posted: Tue Aug 01, 2006 3:15 pm Post subject: Weight of paint affecting the C of G

Hi Listers,  

   

Just an uninformed question on this issue;  

   

Given that most people are going to spray the entire aircraft, would this not spread the weight of the paint uniformly across the entire structure rather then just adding load to the tail plane ?  

   

I’d love to here people’s thoughts on this as I am contemplating the whole painting thing at the moment.  

   

Best Regards,  

Eddie  Seve  

   

Zodiac XL  

Working on the front fuselage

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gboothe(at)calply.com
Guest

Posted: Tue Aug 01, 2006 3:49 pm Post subject: Weight of paint affecting the C of G

Call me dull, but I think the un-asked question that Eddie (below) is asking is, “What difference does it make whether you paint or not?  Paint is part of the “empty weight”.”  

   

I haven’t followed this entire string about the weight of paint whether wet or dry.   

   

You finish your plane and weigh it.   

   

If you paint it after doing wt & balance, you then need to re-weigh it.   

   

It doesn’t matter if you coat your plane with ½” of lead, it’s still part of the “empty weight.”  

   

Though a thoughtful discussion of the weight of paint as it affects performance (gross weight) might be somewhat useful if you’re planning on racing at Reno, for our purposes it only comes into play at the initial weighing for wt & balance.  

   

Most of us will probably add more weight to our planes just by installing aileron trim, or an extra battery, or landing lights, or CD player, or 25ga skin vs. 16ga. …  

   

I say, “Paint away!” ….or not.  

   

Gary Boothe  

Cool, CA  

601 HDSTD, WW Conversion  

Tail done, working on wings....  

   

   

   

Hi Listers,  

   

Just an uninformed question on this issue;  

   

Given that most people are going to spray the entire aircraft, would this not spread the weight of the paint uniformly across the entire structure rather then just adding load to the tail plane ?  

   

I’d love to here people’s thoughts on this as I am contemplating the whole painting thing at the moment.  

   

Best Regards,  

Eddie Seve  

   

Zodiac XL  

Working on the front fuselage

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VideoFlyer(at)aol.com
Guest

Posted: Tue Aug 01, 2006 4:22 pm Post subject: Weight of paint affecting the C of G

<<<<<  I say, â€œPaint away!â€ â€¦.or not. >>>>>>>

  

  

 AMEN!!!!!

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David X

Joined: 10 Jan 2006
Posts: 154
Location: Princeton, NJ, USA

Posted: Tue Aug 01, 2006 7:55 pm Post subject: Re: Weight of paint affecting the C of G

I confess that I started this thread about paint ... and boy am I sorry I did. Some people just love to argue. 



Yes, it affects CG ... but PAINT IT!  :lol: 



 	  601zv(at)ritternet.com wrote: 	
		  Eddie: Seems to me that you might be missing the fact that0 the surface area behind the CG may be not only larger than in front, but that a0 lot of that area is farther from the CG. Probably someone has actually0 calculated this, but if it's been posted I missed it.

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