EV speed testing

Zero to 30 testing of a home-built electric car.
Pulling away from a stop with an electric motor and NO CLUTCH. Comparing 3 gears.

Category:

Autos & Vehicles

Tags:

• electro-metro
• Geo
• Metro
• Home-built
• DIY
• Electric
• car

[indman101]

is 30 mph top speed?sounded like you pushed it to the limit.

[BenjaminNelson]

@indman101

No, I just sort of picked 30 mph almost at random.

On DC motor systems, VOLTAGE is the biggest single factor in top speed. This car on 72V (which is how it was running at the time) has a 45 mph top speed. (That's the speed limit right in front of my house anyways.)

With more batteries, you can go faster. I have had this car over 70 mph. I got a speeding ticket in it a while back.

[carambadebamba]

great project! It's giving me...ideas...heh

What's the speed limit on that road there? I suppose you don't take this car on major highways?

[BenjaminNelson]

The speed limit on that part of the road is 45 mph. It turns into 25 mph not far ahead.

I have had this car at over 70 mph while it was briefly running 144v.

[SOPM2007]

How is it possible to have better acceleration in 4th than in 3th gear??

[BenjaminNelson]

The higher gear means the motor has more resistance, so it has to pull more power from the batteries. The motor pulls more power for longer, thus better acceleration.

In second gear, you get plenty of power briefly, then the top speed quickly tops out.

[tvr390se]

try and start your 4-banger in 4th and get to 30 in 13s ;) I bet you stall it.

[draggonhedd]

horsepower is how fast youll hit the brick wall, torque is how far you take the wall with you.

[furmaster212]

holly shit I love how you started with only four batterys in the trunk, now you have soo manny when yer sitting ther it actually hums with soo much energy XD

[indman101]

wasnt the forklift a little faster?

[thamoja]

whats is the top-speed,

and whats the range?

[TheGoped23]

G-force? lmao

[wks1978]

They do but this only has a 48v forklift motor