johnDH's Recent Activity

  1. johnDH replied to the thread Engineers and other experts, please weigh in on this.

    The nicest theory for solar powered cars would be with a whole hydrogen infrastructure. Use industrial scale solar grids to create...

    Aug 5, 2021 at 5:00 PM
  2. johnDH replied to the thread Engineers and other experts, please weigh in on this.

    Gotta love a good crack-pot 'Perpetual Motion Machine' discussion! I haven't seen one of these since the rise of modern electric...

    Aug 4, 2021 at 10:39 PM
  3. johnDH replied to the thread What Do They Call ZZ Top in Canada?.

    Just so you know: Im english, live in Australia, relatives in Canada and i spent several years in the US. Yes in at least the UK and...

    Jul 31, 2021 at 6:33 PM
  4. johnDH replied to the thread What would cause the pickups in an old guitar to suddenly go out of phase.

    nothing could really flip the phase by itself. But a similar thin sound could be caused by a loose ground wire.

    Jul 30, 2021 at 8:18 PM