Wait that isn't an F20c - S2KI Honda S2000 Forums



Wait that isn't an F20c

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Old 08-27-2012, 05:32 PM   #1
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Default Wait that isn't an F20c











awww yaaaa
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Old 08-27-2012, 05:46 PM   #2
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It keeps going and going doesn't it?
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Old 08-27-2012, 05:54 PM   #3
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pretty cool build! looks like the batteries are going in the rear. curious what the overall weigh distribution will be in the end? can you maintain the original 50/50 balance? and will you end up heavier or lighter than the original?
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Old 08-27-2012, 05:57 PM   #4
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mad! don't even know what i'm looking at
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Old 08-27-2012, 06:13 PM   #5
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Quote:
Originally Posted by 2000ths View Post
pretty cool build! looks like the batteries are going in the rear. curious what the overall weigh distribution will be in the end? can you maintain the original 50/50 balance? and will you end up heavier or lighter than the original?
Yup, batteries will be located in two rear compartments.

The balance will (hopefully) be somewhat uniform. However, I have strategically placed a majority of the weight directly over the rear axle. I will work on the balance once I finish it.





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Old 08-27-2012, 06:30 PM   #6
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what type of batteries are going to be used? further more, what did you do with the f20? care to sell it?
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Old 08-27-2012, 06:42 PM   #7
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love this, what kind of power will you get out of it
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Old 08-27-2012, 06:43 PM   #8
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This is way too cool. I love the vision. Good job!
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Old 08-27-2012, 06:44 PM   #9
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s2000 with torque?

interesting!
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Old 08-27-2012, 07:06 PM   #10
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Quote:
Originally Posted by praisedprod View Post
love this, what kind of power will you get out of it
Man I just typed a huge response to this and then I pressed backspace, and Chrome seeked back in history and all my work was gone

Anyway, round 2

Power is determined by voltage and amperage in the electric world.

The battery pack will consist of 416 cells with 4 cells in parallel and 104 in series. Each cell has a nominal potential difference of 3.3v.

Therefore, the voltage of the traction pack = 104 * 3.3

V Pack= 343.2v

Current is determined by both the batteries as well as the controllers. The batteries are 20ah A123 systems pouch cells that I bought from china . 4 parallel = 80ah units.

Each cell has a discharge multiplier of 20-30c, therefore each battery module (8 modules) should put out 1600-2400A.

However, my controller has a limit of 2000A, so this is the system bottleneck. It can put out 2000A as long as you can keep it cool (liquid cooling).

P = I * V
P = 2000 * 343.2
P= 686400 w ----> 686.4 Kw

1 Kw = 1.341 hp

686.4 * 1.341 = 920 hp

Assume an 85% drive train efficiency

920 * .85 = 782 hp

On top of that, the motors can put out 1500 ft-lbs of torque at 0 rpm

So overall, the car has a potential of 700ish hp. I am assuming I will end up getting anywhere from 550-650 at the wheels.

It should be fun



Once its done Ive got something to race it against / compare to.
Ironically, the car that it shall race was also the vehicle that transported the S2000's motors

Can you guess what it is ? :--)





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