Electro-Metro Instrument panel

Here is the latest version of the instrument panel on my home-built, low-budget, electric car, the ELECTRO-METRO.

Category:

Autos & Vehicles

Tags:

• EV
• electric
• car
• BEV
• geo
• metro
• forkenswift
• volt
• meter
• ammeter

[SirTragain]

Nice job Ben, I see the AMP gauge jumped to 120 amps with no load; where is it at and at what speed when driving?

[BenjaminNelson]

If you quickly rev the motor, just the weight of the rotor will pull pretty high amps for just a moment.

The car usually pulls about 100 amps while cruising at 35 mph

I think I also only had 5 instead of the usual six batteries in there at the time.

I still want to make the instrumentation look a little better, but I need to figure out what else I might want in there first.

[SirTragain]

So then the math for the motor when pulling 100 amps from six 12 volt batteries wired in serious or 72 volts would be to use the formula Volts*Amps=Watts which is 7200 watts or 7.2 kW when maintaining 35 MPH and since 1kW-h=1 watt * 60 seconds = 60 * 60 minutes in an hour = 3600 watts then 7.2 watts divided by 3.6 watts = 2kW-hs of electricity if you were to continue driving for 35 miles at that rate of speed without any amp fluctuation or voltage drop.

[BenjaminNelson]

Yep - in theory.

In reality, I have very well used batteries, and can only go about 20 miles. But that's where hills, the Puekert Effect, etc come into play.

[147258GS]

Did i see a button on the dash of that thing that said BLOW ME?

[SirTragain]

How is the open source controller going?

[jmoyet]

cool

[peckiledorf]

fine job!!!!

[fordescort98]

Sweet :D