Tractor repair in the dark. Iseki was making some screeching noise when revving up, which I assumed was the alternator belt, not unusual when it gets cold and just needing more tension.

So I popped the hood only to find it wasn't the belt. Then I noticed when the screeching happens, the tachometer needle would go crazy.

Luckily I'm old and remember stuff from before digital everything. Found the one "cable" going from the dash that was not a cable, but a flexible shaft in a tube, driven by a gear on the injector pump.

Undid it and pulled out a flexible shaft that hadn't seen any lubricant in 40 years. Cleaned it a bit, hosed it down in silicone oil and back it went, now happy and no longer screeching.

#Tractor #Repair #Homestead #DIY #Iseki #Tachometer

Sollte dieser Verdacht auf einen organisierten #Tachometer Betrug stimmen, wäre das ein unglaublicher Skandal. Zahlreiche Bereiche wie Versicherungen, Kostenerstattung, Steuern wären betroffen.

Reuters berichtet:

#Tesla sieht sich mit einer Sammelklage konfrontiert, in der behauptet wird, dass das Unternehmen die Kilometerzähler seiner Elektrofahrzeuge beschleunigt, so dass sie schneller aus der Garantie fallen und Elon Musk nicht für Reparaturen aufkommen muss.

https://www.reuters.com/business/autos-transportation/tesla-speeds-up-odometers-avoid-warranty-repairs-us-lawsuit-claims-2025-04-17/

DSP and control theory tooters, how do you smooth a tach signal?

I'm measuring a sequence of tachometer pulses, and I want to turn that into a smoothed current speed number. Everything I know about DSP uses a fixed sampling interval, but these aren't fixed -- the interval is the signal.

This has to be a well known problem with well known solutions...

Thank you.

#DSP #ControlTheory #Tachometer

Bigfoot Turns Classic Sewing Machine into a Leather-Eating Monster

#classichacks #halleffect #leather #photointerrupter #pid #pwm #sewing #tachometer #universalmotor #hackaday

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hackaday.com/2023/11/18/bigfoo…

Drill Press Runs Faster On a Treadmill Motor

Are you tired of the same old video style from your favorite content creators? We can't say that we were, exactly. But nevertheless, we appreciate this creative departure from [Eric Strebel]'s regular fare as he soups up his drill press with an old treadmill motor and a few extra features.

First off, that commentator in the video is right -- 2.6 horsepower is a crazy amount for a drill press. Fortunately, [Eric] also added a variable speed controller and a digital tachometer to keep things in check. As an added bonus, he no longer has to get under the hood and mess with the belts.

We like what [Eric] brings to the drill press motor mod, which is already well-documented on YouTube. We love the re-use of an office chair bracket as a new motor mount. It's probably our favorite bit aside from the 2-color forward/reverse switch plate idea: print it in whatever letter color you want with proud lettering, paint the whole thing black, and sand off the letters so the color shows. Check it out after the break.

There are many ways to make your own drill press, and one of the easiest is to mount a hand drill.

Did you miss the Industrial Design Hack Chat with [Eric]? It's okay, you can read the transcript over on IO.

#toolhacks #drillpress #officechair #recycling #tachometer #treadmillmotor