smaller disk drives necessitate breeding of army of miniature bunnymen


12 Responses:

  1. fantasygoat says:

    Bastard! I just captured and resized that with the plans to post it myself!

    Sweet I've been relying on it too heavily lately.

  2. nichiyume says:

    still making keys the old way?

  3. fantasygoat says:

    From Boing Boing:

    "The picture is of a fixed-head disk, very similar to a Borroughs unit I had the pleasure of disassembling (in 1975) after a catastrophic head crash (I got authorization from Gordon Bell himself to do it). It took me 3 days to whittle it down to nuts and bolts, and the platter weighed 18 pounds. The hub upon which the platter was mounted was phosphor bronze, and weighed an additional 17 pounds. So imagine the inertia of 35 pounds spinning at 3600 RPM. It had electric brakes, because if you just switched off the power, it would spin for a loooong time. There is an (apocryphal) story of movers just hitting the circuit breaker (not the off switch that engaged the brakes), and after waiting the requisite 5 minutes for spindown, loaded the drive into a truck. All the moves and hallways were right angles, of course. Since brakes had not been engaged, it was still spinning at 2000 RPM or so by the time it was loaded. When the truck turned a corner, the drive precessed right out through the side of the truck. It held a few megabytes at most, if I recall correctly (a similar unit was used as a swap disk on the PDP-10, so it would have held 256K or so)."

    • bitwise says:

      Wouldn't a massive gyro, upon being loaded in a truck, simply try to twist in place as the truck turned a corner?

      I find it hard to believe somebody loads sensitive equipment with several hundred pounds of mass into a truck and doesn't tie it down firmly enough to resist the forces from the spinning mass. I mean, are the forces generated by trying to rotate the thing really that much greater that just, say, slamming on the brakes?

      Presumably there's someone here who remembers mechanical engineering dynamics better than me.

      • 33mhz says:

        ...There is an (apocryphal) story of movers just hitting the circuit breaker (not the off switch that engaged the brakes)...

  4. dygel says:

    Oompa Loompa Doomity Doo!

  5. xunker says:

    Exhibit AExhibit BImitation is the sincerest form of.. whatever.

  6. recrea33 says:

    i just sprayed tea all over my monitor.

    hi ho, i guess it needed a clean anyway.