REFLECTOR: Annual inspection/Compression Testing.

[Douglas Holub]

If the piston were 132 mm in diameter (5.2 inches), and the air pressure was 
0.124 psmm (80 psi) the force on the piston would still be 1698 pounds.

----- Original Message ----- 
From: "Dave Philipsen" <velocity at davebiz.com>
To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
Sent: Wednesday, September 10, 2008 9:19 PM
Subject: Re: REFLECTOR: Annual inspection/Compression Testing.


> There is nothing in your formula that quantifies the area over which the
> 1698 lbs. is spread.  Using your formula, I could say that the piston is
> 132mm in diameter in which case:
>
> 13,701.4 sq mm @ 80psi=1,096,112 lbs. force
>
>
> HYTEC45 at aol.com wrote:
>> In a message dated 9/10/2008 11:51:59 AM Pacific Daylight Time,
>> davedent at comcast.net writes:
>>
>>     Remember you are putting 80psi against sometimes a surface of 5.2"
>>     and that's a lot of area to stop.
>>
>> 21.23 sq inch.  @ 80psi=1698lbs force.
>> TEC
>>
>>
>>
>
> -- 
> Dave Philipsen
> Velocity STD-FG
> N83DP
>
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