Date:         Sat, 3 Apr 2010 10:16:21 -0700
Reply-To:     Alistair Bell <albell@SHAW.CA>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Alistair Bell <albell@SHAW.CA>
Subject:      Re: VC fluid - take a chance on this
Comments: To: Loren Busch <starwagen@GMAIL.COM>
In-Reply-To:  <w2i86476e251004030948v8a82283fh98595f83f97efee1@mail.gmail.com>
Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed

we don't know as we don't know the specs for the original vc fluid.

there are a few different forms of siloxanes/dimethecones etc

I *think* the vc fluid is a polydimethylsiloxane, but what molecular
weight (ie what polymer size)?

The fun part is that the us supplier has some stuff cheap, and if you
had the time and inclination you could play around with clapped out
vc, do some bench tests etc.

Maybe even make a model vc for the science fair :0

alistair



On 3-Apr-10, at 9:48 AM, Loren Busch wrote:

On Sat, Apr 3, 2010 at 9:35 AM, Alistair Bell <albell@shaw.ca> wrote:

> dont need to be a chem major, just need to get the specifications
> of the
> original siloxane and compare to what you can buy off the shelf.
> Problem is, original specs are not published, or perhaps Derek Drew
> knows.
>

I'm totally ignorant on this subject.  But a quick Internet search
seems to
show that the two terms used, siloxane and dimethicone, are similar but
different versions of a silicon oil.  So that got me wondering if
what the
German source is selling is actually the right product or 'snake oil'.