# New Electric Car

5086 Views 23 Replies 6 Participants Last post by  EVEngineeer
How much hp do I need to get a top speed of 100 miles. The car will be a vw golf.

I will have a 14400 ah capacity battery.

Can someone please recommend a motor?

What range will I get at 55 to 60 miles an hour?

Also, can someone also give me a list of components I need for my conversion.

Thank you so much!
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I calculate that the batteries will weigh about 430 KG.

Is this too much?
I am sure it is 14400 ah.

The voltage for each battery is 3.2 V
There will be 72 batteries in total. Each one is 200 ah and weighs about 5.70kgs.

Also, is this motor good? Will it be enough for a VW golf?

AC 3Xx2-26.26
Dual Shaft
So is the motor good?

Or is the warp 9 or 11 better??

You can find my requirement in my original post.

Also, new question, is a BMS Necessary??
So the AC 3Xx2-26.26 Dual Shaft can get a golf to 100 miles an hour?

Also, at 55-60 miles an hour, how fast will this motor consume all 14400 ah?

What range will I approximately get (If I never stop and the terrain completely smooth.)?

72 X 200ah batteries is 14400 ah right?
But I only 144 volts for the motor.

72 batteries X 3.2 volts is 230.4 volts. That is too much!!

What do I do?
But more batteries give me a longer range!
72 x 3.2 = 230v

You can have 230v and 200Ah
Single string all cells in series
Or
two strings of 36 x 3.2 = 115v
115v and 400Ah
Two strings of 36 cells in parallel (2 x 200 = 400Ah)

Or you can use a DC motor - (Warp 9/11 or ex forklift) and a Soliton Controller that will use 230v and drop it to a lower voltage for the motor
I really want to use a ac motor.

If I use a controller to lower the voltage, am I wasting charge from the batteries????

I think your two string solution might work for me.
I would hold off on buying anything until you get a firm grasp on what you are going to build. I would suggest organizing a complete parts list for the entire build before buying anything as well. I was taught by an expert on here to draw an entire schematic of your car., and I thought he was nuts, but it forced me to see the big picture. It sounds like you could really benefit from a few hours of reading about other peoples builds on here, the wiki here, and evalbum. You will be glad you did. If you have questions, keep asking... I know from experience what it is like to be new to EVs, so I will answer everything that I can.
Is there somewhere that I can find a parts list??
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