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Old 07-10-2008, 11:30 PM   #140 (permalink)
MPaulHolmes
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Join Date: Feb 2008
Location: Maricopa, AZ (sort of. Actually outside of town)
Posts: 3,832

Michael's Electric Beetle - '71 Volkswagen Superbeetle 500000
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Battery Placement

We decided to make the car a 2 seater, with the former back seat the spot for the battery box. That way, we have a nice rectangular platform to attach the angle iron to. Also, that spot is designed to hold a good amount of weight, like 2 big adults, which would be the weight of 8 Costco 115ah batteries. Plus, the weight is in front of the rear wheel. PLUS, we're about 100 pounds lighter in the engine compartment right now because of the engine/motor swap. So, I did a little math (that's a lie, I'm just winging it) and I found out that the weight distribution will be perfect with all 8 batteries in the "back seat" which no longer exists. I set it on fire. That hay stuff burns really well. Why do they put thin little hay nuggets inside a beetle? Beetles are like horses. They both have lots of hay nuggets inside of their bodies.

Well, 17 compared to 23 "units of distance" is a pretty big difference I suppose...


Let's pretend that the voltage stays constant at 48v as it gets run down.

The energy in the big pack is: 48v*230a*hr*3600sec/hr =
39,744,000 Joules

Let's pretend that the car will use 300 watt*hr/mile (keeping speed down, on flat ground). I have no idea of the actual energy per mile.

Then it uses 1,080,000 Joules/mile, which would be 36.8 miles at 100% discharged! Wow! That's amazing! derrrrrr...

So, assuming 50%, you get 18.4 miles per charge. That's not horrible!

HOURS PASS (I forgot to submit this stupid note thingy that I am writing)

The battery box is just about finished. The size of the back seat is exactly the same size as the 8 batteries. Wow! Isn't that amazing. Unbelievable. Wow...
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