I coulda sworn there was such a thing as a speedometer that worked solely mechanically, no mags, weights or springs or air current.just translated speed of turning shaft into needle position.was I high and is that impossible, or is it possible but no one uses it for practical reasons.I want to be able to adjust suspension on vehicle in relation to speed, but also do so purely hard-parts mechanically, with some force.
>>2891433Thats how both the 80s dumpbody 3500s i had worked, think it was how a lot of the old chevys did
>>2891433Also many motorcycles
>>2891439all seem magno, going back to 1900somehow I think it might be possible with something like thishttps://www.youtube.com/watch?v=mWJHI7UHuys
>>2891433Nikola Tesla invented one in The 20s.
>>2891437>Thats how both the 80s dumpbody 3500s i had worked, think it was how a lot of the old chevys didThere are magnets and springs in old speedometers. Although those are both mechanical things, so I dunno exactly what OP is smoking...
>>2891433Mopeds have thosehttps://www.treatland.tv/category-s/57.htm?searching=Y&sort=5&cat=57&show=50&page=1&search=%20Speedo
>>2891433>I coulda sworn there was such a thing as a speedometer that worked solely mechanically, no mags, weights or springs or air current.Not really. The two closest would be the centrifugal speedometer and the chronometric speedometer.Centrifugal were mostly used on train locomotives. They used a set of spinning weights like a speed governor. They were relatively simple, but required regular lubrication and maintenance and basically fell out of use as soon as alternatives were available, outside of some niche roles (combined speedometer/governor systems).Chronometrics were basically a complex clock with additional escapement mechanisms. They can be extremely accurate, but they have a bit of lag. They can be built to be extremely resistant to vibration as well, which is why they were used on motorcycles up until the 1970s. But they quickly went away once magnetic designs improved, as they were far more expensive.Modern style magnetic speedometers were invented/patented in the early 1900s (1902?). They aren't as accurate as a chronometric, but perfectly adequate for most applications. And they're much, much cheaper.>I want to be able to adjust suspension on vehicle in relation to speed, but also do so purely hard-parts mechanically, with some force.It could be done, but it is going to be vastly more complex and expensive than using an electronic sensor to drive the controllers.
