[Prev][Next][Index][Thread]
Re: Capacitor Container Failure
One added note:
If the end caps ARE styrene (the thin transluscent ones) they may also
be attacked and weakenned by the mineral oil. Styrene starts out being
brittle, and its personality is definately NOT improved by bathing it in
mineral oil.
-- Bert --
Tesla List wrote:
>
> Original Poster: "jim lux" <jimlux-at-jpl.nasa.gov>
>
> -----Original Message-----
> From: Tesla List <tesla-at-pupman-dot-com>
> To: tesla-at-pupman-dot-com <tesla-at-pupman-dot-com>
> Date: Friday, March 19, 1999 10:23 AM
> Subject: Re: Capacitor Container Failure
>
> >Original Poster: Robert Volk <smrtmny2-at-earthlink-dot-net>
> >
> >Ross,
> >My rolled poly caps did same thing - on 2 out of 3. What I discovered
> >was that the end caps I used were bad. One of the caps was a heavy duty
> >cap from Home Depot - it had no problems. The 2 that failed were a
> >slightly translucent plastic ( not the solid, opaque type from Home
> >Depot). They were thinner than the heavy walled one as well. Every cap
> >made from this junk cracked on me after a few runs, top AND
> >bottom.UUUGGGHHH! I bought the JUNK END CAPS from Ace Hardware.... never
> >again.....
>
> The translucent ones are most likely styrene and sold for landscape and
> architectural drainage pipes buried in the ground. Hardly an environment
> where leaks are a problem, since the pipe often has holes every few inches
> anyway.
>
> I'd go with real PVC, designed to take some pressure. Even the DWV ABS
> stuff, although it is nice and flat on the end caps is actually a foamed
> core composite and not very strong, and not designed to much pressure
> (that's why you have vent (the V in DWV) stacks on your drains (the D in
> DWV) that carry the waste (the W..) from your sinks and toilets.