Author Topic: change from pos - 6v to neg - 12 v  (Read 764 times)

Offline limeyrob

  • Resident Legend
  • *****
  • Join Date: Nov 2023
  • Posts: 899
  • Karma: 4
Re: change from pos - 6v to neg - 12 v
« Reply #15 on: 30.07. 2024 21:33 »
Yes! I've not done that in the past and had a cable corrode right through in a damp environment.  Dry seems to be OK but if its regularly wet the corrosion can be really rapid.
Slough 59 GF/SR

Online chaterlea25

  • Wise & Enlightened
  • *
  • Join Date: Jun 2009
  • Posts: 4116
  • Karma: 54
Re: change from pos - 6v to neg - 12 v
« Reply #16 on: 31.07. 2024 14:01 »
Hi Sean,
When fitting an electronic regulator it is worthwhile running earth wires from headlamp & tail light and dynamo to the same earth point as regulator and battery

John
1961 Super Rocket
1963 RGS (ongoing)

Offline sean

  • Valued Contributor
  • ****
  • Join Date: Oct 2012
  • Posts: 387
  • Karma: 6
Re: change from pos - 6v to neg - 12 v
« Reply #17 on: 31.07. 2024 14:30 »
Hi Sean,
When fitting an electronic regulator it is worthwhile running earth wires from headlamp & tail light and dynamo to the same earth point as regulator and battery

John

why ? because of the polarity change ?

Offline limeyrob

  • Resident Legend
  • *****
  • Join Date: Nov 2023
  • Posts: 899
  • Karma: 4
Re: change from pos - 6v to neg - 12 v
« Reply #18 on: 31.07. 2024 16:42 »
I did this when I fitted my DVR.  The old mechanical regulator is not very sensitive (and not very accurate either) and seems to cope if the connection is a bit intermittent. But the solid state ones are a bit faster to react so it pays to have good connections.  I fitted LED bulbs at the same time and these can behave really oddly if they get a bad earth.
Slough 59 GF/SR

Online chaterlea25

  • Wise & Enlightened
  • *
  • Join Date: Jun 2009
  • Posts: 4116
  • Karma: 54
Re: change from pos - 6v to neg - 12 v
« Reply #19 on: 01.08. 2024 10:47 »
Hi Sean,
What Rob said plus electronic regulators will fail if they get voltage "spikes" due to bad connections

John
1961 Super Rocket
1963 RGS (ongoing)

Offline sean

  • Valued Contributor
  • ****
  • Join Date: Oct 2012
  • Posts: 387
  • Karma: 6
Re: change from pos - 6v to neg - 12 v
« Reply #20 on: 01.08. 2024 15:01 »
Hi Sean,
What Rob said plus electronic regulators will fail if they get voltage "spikes" due to bad connections

John

Ok
Thanks for the info , will do
Sean