Sears Electromechanical Calculator

[@bowieinc]

Holding the solder hook as a helping hand! Genius! That alone was worth the watch!!

[@DannyBeans]

The Mountain Dew story isn't gross when you're expecting to hear that you peed on it.

[@DiThi]

I had the same thought.

[@DIY-valvular]

That diode make sense because the motor is DC type, with brushes and permanent magnets. The same you can see in hair dryers, a very (clever) japanese solution. Typically those motors are rated 30 to 50 dcV, that's why the resistor. RMS voltage of a half wave recrified is 1/2 V peak, so the resistor absorb the difference. The most electromech calcs used an induction motor with a flywheel, but those guys extrapolated the hair dryer's design to a calculator, clever. Another interesting solution is the printing mechanism itself, the type discs are fixed, and the paper pulling roll basculate, i.e. less moving parts.

[@oswaldjh]

The Jetsons style on the outside. Steam Punk innards. Double Retro.

[@tilmanluther1887]

It's how things were made back then.

[@thysonsacclaim]

"This is like a brand new tip, I've never used this." I know the feeling.

[@TheSupercrazyman11]

You know you've been watching a lot of Cathode Ray Dude when the algo puts this obscure little gem on the top of the home page!

[@RemoWilliams1227]

Ayup

[@TheoneStanband]

I got an analog function generator that uses that same power cord and have been looking for the right power cord for years now.

I think I've seen power cords like that on sewing machines.

[@Kylefassbinderful]

Lol it looks a device so old that it won't actually work unless you're smoking a cigarette inside watching the new LA Dodgers on the television.

[@Kalvinjj]

You warned us so much that the story was gonna be gross that I was convinced you just peed on the sponge instead of Mountain Dew

[@sadmac356]

Same

[@Bluscream]

Ohh lol, i actually didnt know youre supposed to wet the sponge >.< thanks ^^

[@Beast9894]

"(grunts)... boy howdy it takes a lot of force to reset those digits" lol

[@joearnold6881]

Lol. Baby gravis warning about the length of the 25 minute video 😂

[@Kylefassbinderful]

Ok now take apart an IBM selectric so we can see that Whiffletree in action

[@renbymon]

Holy crap that was so cool! :D

[@Jammermaker]

I have an old Nixie tube calculator that uses that same power connector

[@bentboybbz]

Its been 5 years and if someone does not take all those grunts remix it and send it to him to remind him of what we originally subscribed to his channel to see i may have to do it myself 😂

[@bentboybbz]

And "the second one looks a little harder, I guess I'll just grab it over hereeee" "with just a little tweeesssttt" 😂

[@lishd]

THIS IS SO FUCKING COOL.

[@alfulton5946]

Lgr is drooling

[@233kosta]

A single diode as a half-wave rectifier and the mother of all resistors behind it... that's got to be the dodgiest way I've seen to run a hobby motor! My advice would have been to solder a wire at the other end of that resistor and one after the motor (I think that one goes straight to the plug), then run it off a low.voltage, current limited DC bench power supply. If you can't read the markings on the motor, my first guess would be 6V/1A, and increasing in small increments from there. Unless otherwise stated I probably wouldn't let it draw more than 1A though.

[@pilotkid2011]

@cathode ray guy. Can you update the description so the table of contents will show up in the video? (Replace time: with time - )

[@NoStereo]

Felt physical pain when you totaled twice to clear the memory shortly before trying to figure out what the X does, when on screen the entire time you showed the keypad which has "X CLEAR" Clearly visible. 😭

[@CathodeRayDude]

That's a separate control up there.

[@NoStereo]

@@CathodeRayDude Well shoot, I stand corrected, sorry about that. I'm looking forward to your feature length video, keep up the fantastic work! I wonder if it has anything to do with using rolls since you only tested it by manually feeding in a scrap, some sort of eject? Or some way to clear a jam?

[@_film_flashback]

love your videos, want to meet you, into all this kind of stuff too...

[@leam1978]

how has the motor held up since?

[@CathodeRayDude]

i haven't run it any more yet bc i need to replace the ink ribbon and i can't find one.

[@DacodaNelson]

@@CathodeRayDude In theory, you can use India ink to re-ink a ribbon a few times, just paint the appropriate side fairly lightly and then wait for it to dry. Usually. No guarantees but it's worked for me. I've also heard of using stamp-pad ink but I don't have experience with that. There's also nothing wrong with finding a similar material at a craft store and cutting it to the same dimensions, then soaking it in India ink, though you can get jams that way.

[@DiThi]

Wouldn't a typewriter ink ribbon work?

[@jens256]

The thing is like a mousetrap...but accountants i guess

[@lishd]

watching it work without the case is giving me sexy feelings. & also feelings of terminator, which i suppose also qualifies as sexy feelings.

[@shawnm355]

ffs. why cant i click the times. i blame youtube, because there always breaking things

[@whatyoumakeofit6635]

Id like to see the kids working as mechanical engineers design something like this. I jis tdont onow if they could pull it off

[@JeffreyPiatt]

I could barely make out a Kenmore logo on it. But I do know that Sears probably still has the manual in PDF format on there website if you look for it and a parts order list .the sears archive site would probably send you the sales sheet by request.