injector bosses

[Simon Bosworth]

Garfield wrote:
> 
> On Fri, 29 Aug 1997 21:50:15 GMT, garfield at pilgrimhouse.com (Garfield)
> wrote:
> 
> >but "high temp epoxy adhesives" especially the
> >aluminum-filled varieties, would be ideal.
> 
> OK, I posted a source for some high temp stuff in another post, but I
> thought I should clarify something that I noticed a couple of ya are
> assuming I meant. The fact that an epoxy is alum-filled doesn't of
> itself mean that the epoxy is high temp. There are lots of lower Tg
> epoxies that are alum-filled (which does help them to carry heat without
> as high a temp rise, if the epoxy is in the heat path). What I meant by
> the above, is that IF you start out with a high temp epoxy, that would
> work good in this application, and IF you could IN ADDITION find one
> that was alum-filled that would of course be even better. Clearer now?
> 
> The alum-filling just makes the epoxy more physically stable (kinda like
> a course matrix of alum bonded with vewy vewy thin layers of epoxy) AND
> more thermally conductive, so if you have a hot part (a head) and a cool
> part (an injector, hopefully cool) then the epoxy's thermal conductivity
> helps it to not get so hot as heat is conducting from the head to the
> injector.
> 
> Oh, you knew that's what I meant already? Well, then what did you read
> this for then, silly.  8)
> 
> Garfield

how about using one of the Aluminium (Aluminum) 'brazing' products that
are available?  These need a much lower heat than welding.

Cheers,
Simon

-- 
------------------------
Simon Bosworth	
simonb at primenet.com