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Re: [T3] Transmission questions

On 20 Jul 99, at 13:01, Sonny8oy@aol.com wrote:

> In a message dated 7/20/99 8:39:52 AM Pacific Daylight Time, 
> oofacts@earthlink.net writes:
> > 4) Hey, how do we feel in general about that clothespin technique for vapor
> >  lock? Any suggested places on the fuel line to put these clothespins? Is
> >  this really a feasible method? Clothespin it and drive this way? Or only
> >  clothespin it when parked?
> wood is a poor conductor of heat, so wouldn't it be better to fabricate 
> something similar from metal?

The clothespin "solution" has made the rounds a lot, and this makes 
me hesitant to debunk it, but I really don't see how it can work. The 
problem is that the ambient temp around the fuel line is higher than 
the boiling point of the gas inside. Adding a heat sink can't help 
because it is still immersed in the same high temp.

The only way I can see that this might have some way of working is if 
there were also a bit of a fuel leak such that the clothespin could 
get dampened with gas. This would evaporate and cool the clothespin 
below ambient. In this case the wooden clothespin would make a better 
wick and a more effective cooler. 

This doesn't really sound like much of a solution to me, however.

Jim Adney, jadney@vwtype3.org
Madison, Wisconsin, USA

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