Hi everyone,
I suggest that a voltage high enough to give you a small shock is from the back
emf generated by the O/D solenoid.
Break any inductive circuit and you will get a high voltage generated,
thats why
good electrical design requires a diode across a coil to suppress this voltage
and prevent circuit damage.
Regards
John
At 00:48 02/06/00 -0700, David Moag wrote:
>Bill and Chip,
>
>I don't think it's just static electricity. A couple of times I've had the
>wires attaching to the O/D switch in the knob come a bit loose -- and you
>can DEFINITELY get a shock. It's certainly not harmful, but it does catch
>you buy surprise! Happens to my son, too. When I do a better job of
>re-tightening the connections and re-insulating the cap, the shocks go away.
>I think the current draw while another piece of metal is providing a ready
>path for the electricity to flow is a different thing then our relatively
>resistant bodies touching each battery terminal.
>
>Dave Moag
>62 TR3B
>77 Spitfire
>La Canada, CA
>
>
> >-----Original Message-----
> >From: owner-spitfires@autox.team.net
> >[mailto:owner-spitfires@autox.team.net]On Behalf Of Bill Miller
> >Sent: Thursday, June 01, 2000 7:26 PM
> >To: Chip Kigar; spitfires@autox.team.net
> >Subject: RE: Shocking shifting
> >
> >
> >
> >Don't look for a frayed OD wire.... You can't get shocked from 12VDC (go
> >touch the two battery terminals with your hands!)
> >
> >It is most likely a static electricity shock. Cars actually generate a lot
> >of static electricity! Remember the static strips people use to run,
> >dragging them on the ground from their bumpers?
> >
> >Or check if someone hooked a spark plug wire up to the shifter. (actually,
> >I've done something similar to a friends car several years ago,
> >but that's a
> >whole different story!)
> >
> >Static electricity or your coil is the only thing you can get shocked from
> >on your car.
> >
> >-Bill
> >
> >-----Original Message-----
> >From: owner-spitfires@autox.team.net
> >[mailto:owner-spitfires@autox.team.net]On Behalf Of Chip Kigar
> >Sent: Thursday, June 01, 2000 5:32 PM
> >To: spitfires@autox.team.net
> >Subject: Shocking shifting
> >
> >
> >
> >well, the PO mentioned this to me, but I didn't experience the thrill until
> >yesterday... has anyone gotten shockan electrical shock from the stick
> >shift? Any suggestions where I should look. It is an OD tranny. Perhaps
> >the short will be obvious when I pull the cover, but as it is
> >intermittent... I'd appreciate any shared shocking experiences..
> >
> >Chip
> >
> >Visit my DYI circle cutting jig page at:
> >http://www.sound.net/~ckigar/circle.htm
> >
> >
> >
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