REFLECTOR: Weight & Balance

[John Dibble]

Through careful testing I determined that I could go a bit behind the 
recommended aft cg limit and still have the canard stall.

John

On 3/23/2014 3:55 PM, nmflyer1 at aol.com wrote:
> What would be really nice is if there was something in print that 
> stated what the real CG envelope is for the 173 FGE. Like I said, I 
> could find no W&B info at all in the on line builder's manuals. All my 
> manuals have examples/figures from the Standard. I think they are 
> different. I do trust that Larry got the correct info from Scott, and 
> would like to have it.
> I did notice that Larry's numbers and mine are really not very far 
> off, Except: His shows an arm of the sump as 135" (which is in the 
> book as an example of the standard. I noticed he subtracted it out of 
> his empty CG numbers.)
> I weighed mine empty, then with just the sump tank full. It is 5 
> Gallons with a CG of 126.19. It is in the stock location. Pretty big 
> difference there.
> One other wrench for my set-up is that My Pitot Tube sticks straight 
> out of the nose. so the tip of the nose is no longer there. I kind of 
> wagged on where it used to be, but I could be off by a bit. If this is 
> so, my numbers get even closer to Larry's except for the sump. This 
> would "buy" me back about 1/2" of CG to the good side.
> I already have 2 Batteries in the nose, but they are pretty 
> lightweight. No room for another, but I am pretty sure I can get some 
> more weight up there if I need to. How much does beer weigh?
> Wim is right on the fuel load effect on CG. I did a detailed fill & 
> weigh process on mine and the basic arm of the fuel was within an inch 
> the whole way, but that arm averaged about 123". This is important if 
> the 173 numbers were really revised from 120.75" to 123.
> Would be nice to know what I am aiming for:0
> Thanks for the input all!  This is getting so close!
> Kurt
>



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