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Re: used Maxwell Caps, MMC, new pulse
Original poster: "BunnyKiller by way of Terry Fritz <twftesla-at-qwest-dot-net>" <bigfoo39-at-telocity-dot-com>
Tesla list wrote:
> Original poster: "Crow Leader by way of Terry Fritz
> you might want to check if oil is compatible in any way with the isopropryl
> biphenyl that is in maxwell caps.
> ----- Original Message -----
> From: "Tesla list" <mailto:tesla-at-pupman-dot-com><tesla-at-pupman-dot-com>
> To: <mailto:tesla-at-pupman-dot-com><tesla-at-pupman-dot-com>
> Sent: Tuesday, April 23, 2002 10:13 PM
> Subject: Re: used Maxwell Caps, MMC, new pulse
>> Original poster: "by way of Terry Fritz
>> Kevin, I bought a couple so I could get .015 mfd in series. so far so
>> good. I
>> dropped one, and it cracked (ouch) and smelly oil came out. It still
>> though I should acetone and epoxy the crack, and then refill it with
>> transformer oil, and put under a vaccuum to get bubbles out. There is a
>> screw which I assume was used to fill them in the first place. Bill Shepard
I had recieved a couple of Maxwells via UPS ( OOOOPS) and both of them were
cracked in the shipping process. There are normally 2 plastic screws on top of
the cap for filling/vent purposes be careful when unscrewing them they have a
tendency to break.
I had replaced the missing oil with Mineral oil and havent had any probles so
far ( after 75 + hours run time) .
As far as sealing the cracks.... Epoxy wont work .... If there is a crack and
no major parts missing, heat up an old table knife in a gas stove flame and
"reweld" the plastic by working the surrounding material back over the crack.
It is a slow process, but it worked for me.... BTW dont breathe the fumes
emmitted by the melting plastic... I believe the plastic is a type of acetyl
material ( has that formaldehyde smell to it when melted) .