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Why Do These starter motors sound so cool
The Brutus BMW V12 is just amazing to hear start. So is the sight of the open valve train.
https://www.youtube.com/watch?v=9i6sPBxN1fM Same goes with this Russian Radial https://www.youtube.com/watch?v=RW-G7pF6gUQ&vl=en Am I the only one fascinated by their sound? Any reason in particular they sound this way? |
They are spinning up a flywheel as energy storage. Then engage the now spinning flywheel to spin the engine.
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There's a complete Anatov AN-2 at the National Warbird Museum in Geneseo, NY. It's one ugly duckling.
https://en.wikipedia.org/wiki/Antonov_An-2 |
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Word I read is that Charles Kettering (name famous today largely for the Sloan Kettering Cancer Clinic), who also invented the coil and breaker points ignition system, invented the starter after a friend of his was badly injured by kickback from a hand starter on a Cadillac. IIRC he eventually died from his injuries. Kettering was a monster inventor, large parts of the auto as we have long known it sprang from his brain. That is an interesting car in the OP, you know it's a monster when you have a guy ready with a fire extinguisher to nip the scorched earth thing in the bud. That starter motor appears to be a design that can run at high rpm for an extended period compared to the starter motors we normally use. *ETA* I had the story of the starter mostly right. Just read Kettering's wiki page, it's an interesting read: https://en.wikipedia.org/wiki/Charles_F._Kettering |
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I understand that starters in the newer cars that stop and start-up again at every stop for a traffic light have really been beefed up. I haven't seen one but suspect that starters may be a major cost that has to be considered in used cars of the future.
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Meh. I always liked that high-toned whine of Chrysler starters from the mid-Sixties through mid-Seventies. I could always tell if a Chrysler Corp. car was starting even if I didn't see it.
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I don't quite get the starter setup on the Brutus car. You can see the valve train moving from the beginning but at some point it sure seems like a clutch is loosed that engages the pistons, that is, the momentum of the flywheel, the whine slows considerably all at once. But it makes no sense that the valve train would be separate from that. |
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The hybrids mostly use the hybrid motor windings to start the car. The brutus has a compression release to get the mass of the crank and pistons up to speed first |
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I believe the most common implementation is to use an integrated starter-generator which spins all the time. Some have paired it with super efficient capacitors like Mazda I-eloop. Seems like a topic that would be pretty boring but the technology is really neat! Fwiw I had a stop start bmw for some time a couple years ago and HATED the feature. It was intrusive and would jolt you on restart. Have to imagine they have improved by now though. |
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Up in OlyWA, where I went to HS and where about half of my family still lives, they went whacky for traffic circles about 10 years ago. They're all over the place. I'm in favor. Much less stopping and starting and idling. Not everyone is thrilled and I gather that in several locations, at least one house needed to be seized and demolished to pull it off. One of my pet peeves in modern times is $h!tty stop lights. The good ones will have sensors that activate the left turn light if you move into that lane and no traffic is coming the other way. There really ought to be major inroads made into smart traffic lights. There's one about a mile from my shop - and this hard into silicon valley, a couple of miles from bleeping octopus Facebook - where you will have to wait - at night, very light traffic, for one to two minutes to get green. More and more if there are no headlights visible I'll run it. Plan to tell the cop that I'd been there for 5 minutes, surely it's broken, right? |
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CFK is famous to me because I was born in Kettering, Ohio at Kettering Medical Center. My ex wife's grandfather was a carpenter for CFK, building much of the observatory at his property, Moraine Farm. Boss Kett, as he was known, gave us Delco, which later became Delphi. An amazing mind... |
Just figuring out the coil-breaker points thing is noteworthy. Turning 12 volts into 18,000 volts for an instant over and over is pretty wild. We've gone past breaker points, but cars still have coils. Breaker points were critical for many decades for function of the auto.
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