Classic Mustangs (Tech)Technical discussions about the Mustangs of yester-year.
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Outstanding! It looks like you've got a great project going there. You're starting off with a car that's in a LOT better condition than mine was. That should make the conversion much easier and straight-forward. I was always trying to balance the restoration part of the project with the electric conversion part - put a lot of strain on my time and pocketbook.
It looks like you're putting together a DC system, correct? How many cells are you planning on using?
The battery pack final design is still a bit up in the air. The leading design (most expensive of course) is to use 384 Kokam cells that are special order and used in military applications. It would be 4P 96S configuration with 3600amps and 355 volts. The cells are 3.7v and 30Ah with a 30C 10 second rating. That's the 3600a 10 second discard needed for maximum track performance and yet with a 42kWh pack I will get the needed street range. The specs we are committed to are: 750-1000hp, 1800 lb-ft Torque, 0-60 in 3 seconds or less, hopefully in the low 2 second range, running the 1/4 mile in the mid to low 10s and a minimum of 125 mile street cruise range. I have been positioning the car as a Electric Super Muscle Car because those performance numbers will put it in that class. My partner, John Wayland, has set world records with his White Zombie and is confident we can deliever everything. The problem is price. Just the cells for that battery pack are $65K and I had budgeted 30-35K when planning the business.
I am looking at some other cells including another Koham that is a 75Ah with 15C 10 second discharge. If I only use a 2P, 96S pack, I would get 2200amps for track use and actually pick up the kWh to 53. I would be adding an extra 250 lb. I worry that the 0-60 and track times can't be met with that pack, but testing will help. The extra street range might be worth it to some buyers. Those cells would be $45K. One hope is for some new cells we are testing that might give me 3200amps and 355v with 45Kwh range in the 35K range, but they out of China and unknown to us.
I will be running the car at the San Antonio Raceway Aug. 3 and 5 using a friend's drag pack that we help me dial in the right minimum numbers.
Gotta go eat. I will be posting more pics in a little while.
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Now we tackle finding and installing a rear end to handle all that power, running down a strip and driving on the highway.
I selected a floating 3 link with watts from Street or Track. Shawn has been awesome to work with and the products have been top notch so far. The rear comes with 13" Wilwood brakes and we selected a Strange ford 9" HD Aluminum center section. The tallest ring and pinion I could get from Strange was a 3.0, but I found a 2.47 that was used for while in town cars. I may get a custom shop to make a 2.0 if possible. When you have 1800 lb-ft or torque at RPM 1, you don't need or want something low a 411. I need top speed gearing.
We got a chance to use a battery pack for one night that comes out of Big Daddy Don Gralits Swamp Rat 37 electric rail dragster. He is 81 and tying reset his 1972 world record first ever 200 MPH run on gas, using all electric. He is currently up to 184.
Anyway the battery pack is the most powerful automotive pack ever built with over 1.5 megwatts of energy.
Here 2 of the four modules that make up the whole pack.
The total weight of the pack is 500lb and the little red **** lever you see in the trunk is the oh **** handle that disconnects the battery pack from every is pulled. Like a parachute handle. In this case it's connected it to the shift lever in the floor of the car since we didn't have a transmission anymore.
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