I have always disconnected + side of battery (on - ground car) when
working. I don't know though. To some of the racers: do any of the
class rules specify where the switch is (+,-)? I suppose that in practice
there isn't much of a difference which side of the battery the switch goes
on.
James Nazarian
'71 B roadster
'71 BGT rust free and burnt orange
'74 BGT going by-by soon
'63 Buick 215
On Wed, 9 Feb 2000, Max Heim wrote:
> Hmmmm... by that logic, you would always disconnect the "hot" battery
> cable when working on your engine. Tried that once (wasn't thinking
> clearly), and my wrench touched the rim of the battery well while I was
> loosening the nut. Needless to say, I won't do that again.
>
> As for your argument, either way cuts the circuit. The idea, however, is
> not to have the frame of the vehicle connected to the battery, as the
> frame is a much bigger "target" for generating shorts, compared to the
> starter/ignition leads (see example above).
>
> James Nazarian Jr had this to say:
>
> >I disagree. I would want it on the hot side to cut off power. Part of
> >spec for the placement of the switch in race cars is that it must be close
> >to the battery. This, I beleive, is to cut off power to the hot lead to
> >not only stop engine, but remove power from wiring so that there are no
> >shorts that could spark against the body as start a fire. I think.
> >
> >James Nazarian
> >'71 B roadster
> >'71 BGT rust free and burnt orange
> >'74 BGT going by-by soon
> >'63 Buick 215
> >
> >On Wed, 9 Feb 2000 Ajhsys@aol.com wrote:
> >
> >> In a message dated 2/9/00 3:21:33 PM Eastern Standard Time,
> >> doddk@mossmotors.com writes:
> >>
> >> << The battery cut off switch can be on either the hot, or ground lead.
> >> Since this is something that is getting stuck into the car, the ground
>side
> >> would be safer, as the exposed terminals will not be a shorting hazard. >>
> >>
> >> - - - - - - - - - - - - -
> >>
> >> That makes sense. All the switches I've seen have big exposed terminals
>on
> >> the top. I guess you could use the cable boots that are used on starters
> but
> >
> >> they never seem to fit very well.
> >>
> >> Thanks, Kelvin.
> >>
> >> Allen Hefner
> >> SCCA Philly Region Rally Steward
> >> '77 Midget
> >> '92 Mitsubishi Expo LRV Sport
> >>
> >
> >
>
>
> --
>
> ===============================
> Max Heim
> mvheim@studiolimage.com
> Studio L'Image/San Francisco
> 415 643 9309 : 415 643 9307 fax
> Studio L'Image/New York
> 212 242 3366 : 212 242 3399 fax
>
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