Bill...

They're calling you Dr. Doom... did you catch that?  Now why would that
be???

Mick Kalber
89 Syncro Westy "Daddeo"
Tropical Visions Video, Inc.
62 Halaulani Place
Hilo, Hawaii 96720
ph. 808-935-5557  fax 808-935-0066
hotlava@interpac.net
www.volcanoscapes.com

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@GERRY.VANAGON.COM]On Behalf
Of Bill Davidson
Sent: Tuesday, January 09, 2001 6:43 AM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Cairo Report, now K&N

> Think about depth filtration of the K&N or paper (as opposed to micron
> filtration with a thin membrane of some sort)  from the viewpoint of a
> small particle.  Imagine that the scale of a micron size particle
> traveling  through 1/8 inch of oil soaked fibers as a hurricane trying
> to blow a tennis ball through a 1/10 mile of a forest of stickum coated
> Aspens.  If the first tree hit doesn't get the ball, one down the line
> will as the speed of the ball drops. Oil wetted depth filters combine
> capacity, efficiency, and high air flow unlike any other.
>
> If it weren't for the oil, lots of particles would get through by
> bouncing off the fibers or clog the entire depth of the medium if it is
> too dense (i.e., dry paper), but with oil wetting they are grabbed and
> held so you can have a looser mesh that allows for better air flow AND
> excellent filtration.

Stuart,
I understand the theory... and I've read the same K&N advertising as you
apparently have... BUT I'll be skeptical until I see results from an
independent testing lab that shows K&N to filter out smaller particles than
a paper filter. The fact that this kind of data is not available at the K&N
web site makes me suspect that either the data is not available or it is
available and the results were not supportive of K&N's claims.

Bill