[TheForge] Re: fire piston

[robert hensarling]

It just seems to me that grass, etc, wouldn't provide the sudden explosion 
that's seen with a diesel, but then again, these guys weren't trying out for 
the Indy, they wanted to cook that prong and roo!
----- Original Message ----- 
From: <xlch58 at swbell.net>
To: "Sponsored by ABANA" <theforge at mailman.qth.net>
Sent: Thursday, June 08, 2006 12:15 PM
Subject: Re: [TheForge] Re: fire piston


> Actually I think it depends on the fact that the grass or tinder DOESN'T 
> compressmaking the clearance volume for the air even less.   Fortuneately, 
> early man was more empirical and dried shavings aren't inhibited by the 
> operators incomplete or incorrect theories.
>
> Charles
>
> Demon Buddha wrote:
>
>> nah...  if you compress air at 70*F to 1/15th its volume, the temp rises 
>> to 1050*.  That should be enough to ignite tinder.  I know it sounds odd, 
>> but the ideal gas law doesn't lie.
>>
>> Freddie Warner wrote:
>>
>>> You're right, Robert, the more I think of it the more I believe there 
>>> has to be some kind of vapor in the cylinder. You have to be able to 
>>> compress whatever ignites and fine wood shavings or dried grass won't do 
>>> that. I bet they add something like some sort of vegitable oil or 
>>> something that vaporizes.
>>>
>>>
>
>
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