"T i m" wrote in message
...
On Mon, 18 Jul 2005 15:38:11 +0100, "Doctor Drivel"
wrote:


"T i m" wrote in message
.. .
On Mon, 18 Jul 2005 13:44:50 +0100, John Rumm
wrote:

snip

My 'real EV' has a 400Ah 48V (~20KW) battery (8 x 6V) ;-)

'Cruising' at 30 mph it pulls 200A

It is by EV standards very inefficient.

woah, steps back .. a rational obersvation for a change

Absolutely, but (as I believe I have mentioned to you *several* times)
is over 35 years old (I've had it 20 years), was assembled from easily
available 'stock' (non optimised) components at the time and has the
aerodynamics of a shed.

I have never proported that it will do anything other than 30 mph and
with a useable range of 20 miles. I have never claimed it can be
charged in one min or had no (in a global sense) emmisions either. It
'really' doesn't have a gearbox (motor directly coupled to the prop /
diff) but if I was to up (double) the voltage I would need to fit a
single speed reduction gearbox (like an overdrive but in reverse) to
reduce the revs.

I did use it very regularly (commuting and fun) for 3 years when I
worked locally but when I worked in the city I used PT (but hated it).

It's called an "Enfield 8000" and in the 'Moke' form very rare. The
project was sponsored by the Electricity Council as a feasibility
study in the late 60's . When the study was closed most of the
vehicles were sold off (mine was never one of them).

The motor is fed via a bank of 8 x 6V 400AH batteries connected as 4 x
12V. A series of electromechanical double ended contactors switch the
motor in series / parallel and voltage 12, 24 then 48 volt steps.
These are triggered via microswitches on a cam on the accellerator
pedal. Fwd / Rev is acheived via a manual X-Over switch. All very
basic but 35 years later still working.

Charge to the traction and aux batteries is provided by an on-board,
under floor charger, bulk charge in around 6-8 hours. (depending on
temperature).

It has been layed up awating sufficient need / interest / funds
(battery) / to put it back on the road, along with the Messerschmitt
KR200.

Were you driving an EV 20 years ago or have you just jumped on the
bandwagon?

I have never had an EV, because they were totally impractical. Now they
not. I have a hybrid not an EV.

You need a modern motor and new modern Lith Ion/Lith Poly batteries.
Otherwise it is a curio taking up space.