I got this in an #email: ‘Thank you for […] ??’
I was puzzled. It looks like a passive agressive demmand for […], but I already did […].
Then I remembered, at my old workplace, I sometimes received email like ‘Thanks in advance. J’ or ‘Great work! J’
Back then, it took me a while to figure out those people used #Outlook which used #Windings instead of #Unicode for #emoji. The codepoint for ‘J’ looks like 🙂 in Windings!
But ‘?’ renders as ✍️.
I am still puzzled. L
@RyanFrancis looks like you are right. It's not a pretty sight though. It's a #worm #gear with a large #pitch angle where the column #gear is #plastic and the #motor is directly linked:
https://youtu.be/z56A9ccI5sU?si=g2g4TE10Gr3h6zF-
That motor could fail locked and you would be sol. For example a broken #brush or #burnt up wire could end up in the winding area between #windings and #magnet cage locking your #steering column. It feels pretty safe though. It would be pretty unlikely to fail.
The actual 3-phase motor is #simple - that's one of the reasons they're used in industry, simple means less to go #wrong. And it appears to be well-made, so there are #quality #bearings and #windings and everything in it. But the motor itself isn't expensive. Rheem probably doesn't pay more than USD 100 for that part of it, and maybe less.
But the bolted-on #control #module #electronics, which make it so you can't easily replace the motor with another unit, are #terrible.
18/x
How does it #sense the #speed the motor is turning at? The motor only has 3 terminals, and those go to the points between the three motor #windings. There isn't another #signal coming out of the motor to tell the #controller how fast it's actually turning.
Except...
Apparently, while driving those three motor windings, it is #simultaneously sensing the back-#EMF that the windings (which are essentially #electromagnetic #coils) produce from those same terminals.
12/x
