This might do it.
Home - Goof Off
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Home - Goof Off
Welcome to Goof Off
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You can get it at Walmart, Home Depot or Amazon.
Scott
On Wednesday, September 10, 2025 at 01:17:01 PM CDT, gene heskett
<ghesk...@shentel.net> wrote:
Greetings all;
About a decade ago I built a half moon shaped bracket, carved a notch in
the skirt of the gearshift knob, making a pair of switches that telly
what gear its in & report to linuxcnc so my tach displays were accurate
regardless of gear. I don't read the spindle directly, with shop made
encoder wheels it was noisy. So I made an extension for the top end of
the motor shaft and am driving a 1000 ppr #22 encoder from that. Had to
remove any noise filtering in the bob in order to get the bandwidth to
make it work at full motor speed, I also took advantage of a mux4 to
feed a small, about 1 rpm signal into the spindle input so with the
speed control now much faster, I could be running the spindle at full
speed, reach uo and change gears as the lack of either tally brought it
down to that 1 rpm about 100ms after the tally disappeared. So the gears
would silently mesh for the other speed, and when the other tally
closed, the motor was back up to the set speed i around that same 100
millisecs.
I'd originally put it all together with shoe goo. Fast fwd a decade and
suddenly low gear is about .05 rpms at the spindle, without any control.
fire up a halmeter & do not find a signal at the low gear pin. Took me
around 2 hours of chiseling thru old shoe goo, to get it apart again to
find that the shoe-goo had migrated, holding the switch mechanically in
the open position. Only took a decade. I'll likely put it back together
again after I replace the switch with more shoe goo. But before I do
that, I need to clean off the old.
So, does anyone know what might dissolve old shoe-goo?
Cheers, Gene Heskett, CET.
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author, 1940)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
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