Mailing List flyrotary@lancaironline.net Message #33775
From: George Lendich <lendich@optusnet.com.au>
Subject: Fuel
Date: Fri, 29 Sep 2006 09:43:03 +1000
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Paul or ANYONE,
Could you tell me why the US gallon is different to the Imperial gallon - it has always bothered me. I've searched the conversions and found that the Imperial system has 20 oz to the pint and the US has 16 oz to the pint, and we all have 2 pints = 1 quart and 4 quarts gallon. It also seems there is a difference in the value of the ounce.
 
We both have 16 oz to the lb - I wonder if that had anything to do with some sort of EARLY rationalisation? 
 
I would really like to understand the reasoning behind this difference, there must be some sound reasoning behind wanting to change from what was THEN considered a universal 'Weights & Measures' system.
 
While your at it could someone tell me why Stone was dropped from the US weights system i.e. 14 lbs =1 Stone.
 
I just figure if I could just understand the reasoning behind these decisions and if they sound logical - I could better live with them, like I do with the difference in spelling. Not that I'm so great at spelling, in fact I used to get in all sorts of trouble by spelling things phonetically such as in the US system - but they belted that out of me, however I do understand the logic behind it. Now if I could just get a handle on  the weights issue!
George ( down under)
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