B: W & B question

[James Averett]

Bob,

I have the CD and it does not give the original factory information.  My
inclination is to believe that the factory provided the empty weight and arm.
>From that the moment was derived, since the moment is used primarily for
recalculating the arm.

What is really eye opening is the weight of the early radios/power supplies/etc!

Jim
 

-----Original Message-----
From: beech-owners-bounces at beechcraft.org
[mailto:beech-owners-bounces at beechcraft.org] On Behalf Of BobsV35B at aol.com
Sent: Saturday, October 20, 2007 6:04 PM
To: beech-owners at beechcraft.org
Subject: Re: B: W & B question

 
 
Good Evening Jim.  

When determining the CG, the givens are the weight and the moments. By  
dividing the moment by the weight you get the arm.
 
If there are a couple of columns of numbers on the 337 that you have  or on 
any equipment list that you can find, you may be able to verify the  accuracy 
of the addition or subtraction that was accomplished.
 
In any case, The CG is ALWAYs derived from the moment and weight. Not the  
other way around.
 
Have you tried ordering the FAA CD for your airplane? Back when that stuff  
was on microfiche, the original weight and balance was included. I do not 
recall  if it is on the new CD or not.
 
The other possibility would be for you to do an accurate weight and  balance. 
 
Since you have been on the list quite a while, you will recall that many of  
us feel that the vast majority of the weighings done by even good shops are  
fraught with errors. Get somebody like Kent, Paul or BB to do the dirty  deed!
 
Follow the directions given in chapter ten and weigh it with the tanks  
empty, not full!
 
When somebody suggests weighing it with fuel tanks full, I take it as  
evidence that they are NOT serious about doing the job correctly.
 
Happy  Skies,

Old Bob
AKA
Bob Siegfried
Ancient Aviator
Stearman  N3977A
Brookeridge Air Park LL22
Downers Grove, IL 60516
630  985-8503

 
In a message dated 10/20/2007 5:45:38 P.M. Central Daylight Time,  
flyinga at dishmail.net writes:

My  question is when the aircraft was delivered, was the weight and arm 
given,  or
would it have been the weight and moment?  I can? find any  documentation 
prior
to the first 337 (just out of the  factory).







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