• (disco)

    I don't know about DEC gear (the washing machine sized drives), but the manufacturer of the gear I was using in the 70's had the smarts to include a 3 phase sequence circuit that prevented a relay from engaging that would not power up the motor of the disk drive.

    As for reversing the phase sequence of a 3 phase motor to "slow it down", this technique is common referred to as "plugging". The hard part is to recognize that the motor has stopped before the shaft turns the wrong way.

    On the piston video: If you want to see the pistons run, maybe they removed one head from a V8 engine, and left the other side to power things. I wouldn't recommend this, considering that things could get sticky before long. Then there are things like Indy race cars have incredible piston travel speeds. About shifting gears the wrong way: I remember when I was observing autocrosses (timed laps) and one guy was downshifting to first gear, and accidentally got it in reverse. Bizarre to see the car starting to backup in the middle of the race. Moral: don't do that!

  • (disco) in reply to another_sam
    another_sam:
    One might be correct on that point, but one might not consider that the right foot is required on the rear brake to avoid inadvertently performing the maneuvre sooner than intended.
    Really? I have driven motorcycles for five years or so, but I have always put down my right foot (or both) and I have never inadvertently sped off the line. Maybe you have more mountains where you live. :trolleybus:
    Also, using the rear brake while accelerating is a common technique for smoothly modulating acceleration on a motorcycle, or to control wheelspin or wheelies.
    Never used that either, but I'll take your word for it.
  • (disco) in reply to flabdablet
    flabdablet:
    Cramped, you say?

    Indeed!

    https://static-secure.guim.co.uk/sys-images/Guardian/Pix/pictures/2008/10/09/londonbus10a.jpg

  • (disco) in reply to dkf

    Who does that fuckwit on the phone think he is, holding up all the traffic like that? Mow him down, I say! Mow him down!

  • (disco) in reply to another_sam
    another_sam:
    Motorcycle training has the rider put the left foot on the ground when stopping.
    Not over here it doesn't. You put the right foot down, leaving the left foot free to shift into gear.
  • (disco) in reply to flabdablet
    flabdablet:
    Cramped, you say? [image]

    West Texas ≠ London

  • (disco) in reply to RaceProUK
    RaceProUK:
    reverse is almost never synchromesh, though I think first generally is synchromesh.
    I used to own a Proton which did have synchromesh on reverse too; apparently I learned some bad habits because when I switched to a Kia it took me a few weeks to learn to stop the car from rolling before trying to engage reverse (e.g. as part of a 3-point turn).

    Both cars had a simple interlock that prevented you from engaging reverse if you were currently in 5th gear but the interlock didn't apply if you tried to change from, say, 3rd to reverse. (The diabolical screeching does tend to put you off though.)

  • (disco) in reply to urkerab
    urkerab:
    The diabolical screeching does tend to put you off though.
    urkerab:
    diabolical screeching

    i are disappoint that GIS failed me here. so instead have a picture made out of words:

    [insert creepy girl/ghost/monster going SKREEEEEEEEE!!!!!!!!!!1!!!!! here]

  • (disco) in reply to accalia
    accalia:
    West Texas ≠ London

    Central Australia ≠ West Texas

  • (disco) in reply to flabdablet
    flabdablet:
    Central Australia ≠ West Texas

    so, we're both exactly as correct?

    you confused west Texas for central London, an i confused Central australia for west Texas.

    seems fair to me.

  • (disco) in reply to accalia

    At least both of mine were central.

  • (disco) in reply to flabdablet
    flabdablet:
    At least both of mine were central.

    yes, if that makes you feel better.

    :-P

  • (disco) in reply to accalia

    Now if only I could remember where I parked.

    It was around here somewhere. http://www.mickbradley.com/images/sturthighway.jpeg

  • (disco) in reply to flabdablet
    flabdablet:
    Now if only I could remember where I parked.

    Detroit, but your car is probably not where you left it... do you happen to have lojack installed?

  • (disco) in reply to accalia

    Oh, Detroit looks like that too? Car industry is in worse shape than I thought.

  • (disco) in reply to flabdablet
    flabdablet:
    Oh, Detroit looks like that too?

    not yet.

    you parked in Detroit to have a shorter walk to London

  • (disco) in reply to accalia

    Tequila is such an ugly drink.

  • (disco) in reply to flabdablet
    flabdablet:
    Tequila is such an ugly drink.

    agreed. i won't touch the stuff myself.

  • (disco) in reply to accalia

    But... tequila! It makes you happy! :notes:

  • (disco) in reply to RaceProUK
    RaceProUK:
    But... tequila! It makes you happy! :notes:

    it also makes your clothes fall off

    https://www.youtube.com/watch?v=Nj2700em-JQ

  • (disco) in reply to accalia
    accalia:
    Detroit, but your car is probably not where you left it... do you happen to have lojack installed?

    In Detroit, lojack isn't guaranteed to help. They can have the car stripped before you even reallize it's gone.

  • (disco) in reply to antiquarian
    antiquarian:
    accalia:
    Detroit, but your car is probably not where you left it... do you happen to have lojack installed?

    In Detroit, lojack isn't guaranteed to help. They can have the car stripped before you even reallize it's gone.

    granted, but with lojack you can at least retrieve one part....

    granted that part is almost always just the lojack.... but there you go.

  • (disco) in reply to accalia
    accalia:
    parked in Detroit

    The Bad Ideas thread is :arrows:.

  • (disco) in reply to flabdablet
    flabdablet:
    Now if only I could remember where I parked.

    It was around here somewhere.

    Did you leave your phone in it? If so this may be handy: https://www.google.com/android/devicemanager

  • (disco) in reply to PleegWat

    huh....

    "helpful"

    [image]
  • (disco) in reply to accalia

    what, did we discourse google?

  • (disco) in reply to PleegWat
    PleegWat:
    what, did we discourse google?

    you tell me. that's what i got when i clicked your link.

    to be fair though F5 cleared things right up.

  • (disco) in reply to accalia

    Guess discourse discoursed google then. Obviously, it's been working for me...

  • (disco) in reply to dkf

    See that gap between the bus and the red van? Escape route. That's not even a tight one. :giggity:

  • (disco) in reply to nerd4sale
    nerd4sale:
    Not over here it doesn't.

    Where is "over here"?

    nerd4sale:
    You put the right foot down, leaving the left foot free to shift into gear.

    Left foot down is called the ready position. Google might help you find more.

    This was the first link I found:

    http://www.bmwmccvic.org.au/index2.php?option=com_content&do_pdf=1&id=17

    Stay Upright is an Australian motorcycle trainging company, probably the biggest in Australia. They're responsible for most of the compulsory training and license testing here.

  • (disco) in reply to ChrisH
    ChrisH:
    I have driven motorcycles for five years or so

    Have you been trained or are you just muddling along? I suspect the latter. Some training will really sharpen up your skills and make you a safer, smoother and faster (when you want to be) rider.

  • (disco) in reply to another_sam
    another_sam:
    Have you been trained or are you just muddling along?
    I have a driver's license, but that's it. So yes, it's the latter. I don't do heel-and-toe stuff in a car either. Also I gave motorcycles up when our first child came along.
  • (disco) in reply to ChrisH
    ChrisH:
    I don't do heel-and-toe stuff in a car either.
    And you don't need to unless you're pretending to be Colin McRae ;)
  • (disco) in reply to another_sam
    another_sam:
    See that gap between the bus and the red van? Escape route.

    It's true. I tried to not pick a picture with too much traffic.

  • (disco) in reply to RaceProUK
    RaceProUK:
    And you don't need to unless you're pretending to be Colin McRae ;)
    No, I don't need to because my gearbox does it for me ;)
  • (disco) in reply to ChrisH

    Paddleshift?

  • (disco) in reply to RaceProUK
    RaceProUK:
    Paddleshift?
    On the company car, yes. The other car is a manual, but with automatic rev matching during downshifts. Which is quite cool once you get used to it.
  • (disco) in reply to ChrisH
    ChrisH:
    2015 BMW 3-series
    Did you make sure you got one where the indicators work? :trolleybus:
  • tlhonmey (unregistered)

    And this is why, when you see them bringing in a single-phase generator, you just go get the proper quantity of battery chargers to attach to the DC side of your UPS. Getting the phase matched correctly for switching from UPS to mains is difficult enough with the well-regulated industrial power. Doing it with a single-phase generator that's had a three-phase converter wired into it is not even worth considering.

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