Jay Summet via EV wrote:
Ok, curiosity got to me and I decided to open up my failed Curtis 1231c.
The 8 screws on the bottom were only covered with two little rubber
plugs (no potting compound) which is different from what I'd read about
online. I removed them.
That means someone's been in there before.
I then used a razer to cut all around the "front panel" potting compound
with the motor/battery terminals and 3 throttle/ KSI plugs, and I can
pull the terminals and potting compound up about 1/4 inch, at which
point I hear/fel a "think" noise.
The potting compound is a rock-hard black solid. If you could cut it
with a razor blade, that also suggests someone was in there before, and
used something else to re-seal it. (For example, I use silicone rubber,
which is easy to cut).
After you remove the screws from the bottom, there are also plastic
bushings that need to be removed. These are basically a tube, with a
head like a washer.
If you don't remove them, they get broken when you forcibly pull the
"guts" out from the inside. They are hard to find, but relatively
inexpensive to replace.
I didn't want to remove the back potting compound panel (where the
Curtis nameplate and serial number are located) if I don't need to.
But I also don't want to just pull really hard and hurt something....
For people who have dissembled one of these before, do I need to detach
the back potting compound plate from the extrusion to slide things out,
or is it enough to pull everything out the "front" terminal side?
You don't have to remove the blank plate at the far end. Once you've
removed the 8 bottom screws and plastic bushings, just pull on the
terminals and the "guts" will slide out.
If the potting compound on the terminal end is still bonded to the case
in places, you may have to heat the case to soften it. Also, you can
slide a bolt through two of the terminals, and use a claw hammer or
crowbar to pry them up to get it started. (This is also how you break
free any plastic bushings that you can't get out).
--
Teaching children to program goes against the grain of modern education.
Just imagine the chaos if they learned to think logically, plan, create,
implement, test, and execute!
--
Lee Hart, 814 8th Ave N, Sartell MN 56377, www.sunrise-ev.com
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