Hi:

Does anyone off hand know the voltage and polarity of the pre war
Rover electrical systems?


Thanks

John Baker

In article
,
JHB wrote:
Hi:

Does anyone off hand know the voltage and polarity of the pre war
Rover electrical systems?

I *think* Rovers stayed with negative earth - even when others changed to
positive. The only pre-war one I had dealing with was 12 volts. But surely
this would be easy to ascertain by looking at a bulb etc if the battery is
missing?


Thanks

John Baker

--
*Stable Relationships Are For Horses.

Dave Plowman London SW
To e-mail, change noise into sound.

"JHB" wrote in message
...
Hi:

Does anyone off hand know the voltage and polarity of the pre
war
Rover electrical systems?

AFAIR, most if not all prewar cars had 12v negative earths.
VW beetles were the only exception I know of that had a 6v
system.
Mike.

"Mike G" wrote in message
...

"JHB" wrote in message
...
Hi:

Does anyone off hand know the voltage and polarity of the pre war
Rover electrical systems?

AFAIR, most if not all prewar cars had 12v negative earths.
VW beetles were the only exception I know of that had a 6v system.

Don't know many pre-war VW's. Quite a few small cars used 6v pre-war, but I
would expect something the size and quality of a Rover (even the 10hp) to
have been 12v and negative earth. In the absence of anything obvious to the
contrary it should be reasonable to proceed on that assumption. Unless we
are talking about an air-cooled flat twin 8hp of course.

Ron Robinson

"R N Robinson" wrote in
message ...

"Mike G" wrote in message
...

"JHB" wrote in message
...
Hi:

Does anyone off hand know the voltage and polarity of the pre war
Rover electrical systems?

AFAIR, most if not all prewar cars had 12v negative earths.
VW beetles were the only exception I know of that had a 6v system.

Don't know many pre-war VW's. Quite a few small cars used 6v pre-war, but
I would expect something the size and quality of a Rover (even the 10hp)
to have been 12v and negative earth. In the absence of anything obvious
to the contrary it should be reasonable to proceed on that assumption.
Unless we are talking about an air-cooled flat twin 8hp of course.

Ron Robinson

The 1930s Rovers are 12volt. Not sure about the earthing though. No idea
about the 8hp I'm afraid though I know someone who has one if we are
desperate to know.

It is most certainly not true to say that most pre war cars are 12volt. All
the Fords and I think Vauxhalls are 6 volt as well as the Morris 8.

Malcolm

"Malcolm" wrote in message
...

"R N Robinson"
wrote in message ...

"Mike G" wrote in message
...

"JHB" wrote in message
...
Hi:

Does anyone off hand know the voltage and polarity of the
pre war
Rover electrical systems?

AFAIR, most if not all prewar cars had 12v negative earths.
VW beetles were the only exception I know of that had a 6v
system.

Don't know many pre-war VW's. Quite a few small cars used 6v
pre-war, but I would expect something the size and quality of
a Rover (even the 10hp) to have been 12v and negative earth.
In the absence of anything obvious to the contrary it should
be reasonable to proceed on that assumption. Unless we are
talking about an air-cooled flat twin 8hp of course.

Ron Robinson

The 1930s Rovers are 12volt. Not sure about the earthing
though. No idea about the 8hp I'm afraid though I know someone
who has one if we are desperate to know.

It is most certainly not true to say that most pre war cars are
12volt. All the Fords and I think Vauxhalls are 6 volt as well
as the Morris 8.

Nope.
The Ford Y type I once owned, along with a Morris Series 1 and 2
and an E type were certainly 12v.
Mike.

In article ,
Mike G wrote:
The Ford Y type I once owned, along with a Morris Series 1 and 2
and an E type were certainly 12v.

Interesting - the sit up and beg post war Fords were 6 volt.

--
*Thank you. We're all refreshed and challenged by your unique point of view

Dave Plowman London SW
To e-mail, change noise into sound.

In article ,
Mike G wrote:

"JHB" wrote in message
...
Hi:

Does anyone off hand know the voltage and polarity of the pre
war
Rover electrical systems?

AFAIR, most if not all prewar cars had 12v negative earths.

I reckon positive earth was a post war thingie. Said to extend plug and
points life.

VW beetles were the only exception I know of that had a 6v
system.

Pre-war Beetles?

--
*Dancing is a perpendicular expression of a horizontal desire *

Dave Plowman London SW
To e-mail, change noise into sound.

"Dave Plowman (News)" wrote in message
...
In article ,
Mike G wrote:

"JHB" wrote in message
...
Hi:

Does anyone off hand know the voltage and polarity of the
pre
war
Rover electrical systems?

AFAIR, most if not all prewar cars had 12v negative earths.

I reckon positive earth was a post war thingie. Said to extend
plug and
points life.

VW beetles were the only exception I know of that had a 6v
system.

Pre-war Beetles?

Yes.
Pre war Beetles had a 6 volt system, which was retained in the
ones produced post war.
Mike.

JHB wrote:
Hi:

Does anyone off hand know the voltage and polarity of the pre war
Rover electrical systems?


Thanks

John Baker

I have just looked up Rover in my copy of "Modern Motor Cars" dated 1937.

Both the Rover 10 and the Rover 12 are shown as 12V Positive Earth.

Jim