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Discussion Starter #1 (Edited)
DC Plasma raced the Texas Mile today and ran a 134mph in the 1/2 mile and 155mph in the full mile. From a standing start. You can see the first uploaded video by Mike Dunn here.

http://www.youtube.com/watch?v=I6x-zCkYPL0&list=FL9pAXoc92fS7PtTrXudLJ1A&index=1&feature=plpp_video

Kind of neat from second 44 to 55 the jet engine sound of the run.

We ran at 210motor volts on the new helwig brushes.
Stock netgain motors otherwise. and a single zilla and half rated battery current at 1200 amps.


John Metric
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I was expecting an actual speeding ticket :p Last time I heard someone bragging about one was for 25 in a 15. I'm sure 155 would make headlines, but don't know if the coppers could catch up!

It's hard to imagine those speeds in an older car. My bug feels crazy fast at 70; over double that would be suicidal (though I hear they can take flight at ~160)

What's the top speed you've reached, or is the mile speed terminal velocity?
 

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Congratulations on the Awesome Run! :D

Was that dust kicking up off the tarmac the second half mile, or magic smoke leaking out of the motors?
 

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Discussion Starter #4
Was that dust kicking up off the tarmac the second half mile, or magic smoke leaking out of the motors?

I didn't smell any smoke, and I didn't even get the motors above 180V. I normally go to 200V in the 1/4 mile.

The dust was terrible. The event was crazy, there were more 1000Hp cars there than I have ever seen. There was tire rubber down the entire track, also dust, rocks, asphalts pieces, trash,

The best run was 257 MPH by a Camaro. The guy needed a parachute to stop in 1/2 mile.
 

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Discussion Starter #5

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Discussion Starter #6 (Edited)
This is the run chart from the 155mph run. See the overdrive shift in the middle. We ran at 1200max amps on the battery where the factory rating is 2500amps max.
 

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The event was crazy, there were more 1000Hp cars there than I have ever seen.
Welcome to my world, where the phenomenal is only average. Ed, the chief of T&S is a good friend of mine.

Glad to hear it was dust not cooking motors. I've run the half mile at Sandhills the last couple years, not sure the motors will withstand the abuse for the full mile.

Congratulations again for being the first EV to run the event!
 

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DAMM , you got there before me , DAMM !! Did you use a Gearvender Overdrive before I had a chance too ?
 

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Discussion Starter #10
DAMM , you got there before me , DAMM !! Did you use a Gearvender Overdrive before I had a chance too ?
Were you trying to get to The Texas Mile or to 150mph?

Yes, we use a gear vendors overdrive. Just one for now, thinking of a second "multi" unit for the run at 200mph.

Metric

www.youtube.com/dcplasmaracing
Check out or in car video of 155mph in an electric
check out all 50 videos....Please subscribe thanks.
 

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I wanted 150-180 mph , oh well just gotta aim higher . But I'm setting my car up to road race . But for the next year an a half , it will be a 34mph "Loook at me" show car til I save up the money .
 

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This is the run chart from the 155mph run. See the overdrive shift in the middle. We ran at 1200max amps on the battery where the factory rating is 2500amps max.
Hi John,
Could you email me the hex file for this run. I looked at the 1/4 mile file you sent earlier: the motor current and voltage work out, but I don't have a good handle on battery voltage yet. The internal resistance must depend strongly on battery temperature. I'll post graphs soon.
Gerhard.
 

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If you started slower , do you think you could have gone faster and needed to use less amps an volts ? Did the wires get very hot ? Hot wires slow down the power a little . I was gonna put the controller right up front behind the grill in the air to cool it . and put a fan on it too . I live in Nevada so I thought it should be there to cool it faster . But even if I use 2 gauge wire , it's still alot of wire for my dirict drive car (10 ft motor to switch , 12ft motor to controller/main power)
 

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Hi John,
Could you email me the hex file for this run. I looked at the 1/4 mile file you sent earlier: the motor current and voltage work out, but I don't have a good handle on battery voltage yet. The internal resistance must depend strongly on battery temperature. I'll post graphs soon.
Gerhard.
Do you monitor battery temperature? If so, can I see the numbers.
Work has me crazed, but this project persists.
Gerhard
 

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Discussion Starter #16
Do you monitor battery temperature? If so, can I see the numbers.
Work has me crazed, but this project persists.
Gerhard
I have three thermocouples, one deep inside each pack. and then there are the 90 board temps which sit right on top of the cells.
Unfortunately, none of these are recorded like the zilla data. I can only read them when I get back to the pits, three from the BRUSA software and the ninety from the Elithion Software.
Both of them are on CANBUS but I don't have a CANBUS display system.

Metric
 

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Discussion Starter #17
If you started slower , do you think you could have gone faster and needed to use less amps an volts ? Did the wires get very hot ? Hot wires slow down the power a little . I was gonna put the controller right up front behind the grill in the air to cool it . and put a fan on it too . I live in Nevada so I thought it should be there to cool it faster . But even if I use 2 gauge wire , it's still alot of wire for my dirict drive car (10 ft motor to switch , 12ft motor to controller/main power)
I don't think so. Even though the zilla was cutting back a little, it really only cuts back the maximum amps, which we weren't exceeding near the end, see the chart.
Our weak spot turned out to be the brushes and brush wires in the second motor. I think the hot air from the front motor was going out of the back of the first and into the brush holes of the second. This cooked the wires. It didn't fail on this run but the next run in Tucson, we "Cleared" the weakened ones.

Metric
 

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Congrats! Awesome! Trying to get the Helwig brushes for my Warp9. Anyone talk to Netgain today. Tried calling several times before the weekend.
 

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Discussion Starter #19
Congrats! Awesome! Trying to get the Helwig brushes for my Warp9. Anyone talk to Netgain today. Tried calling several times before the weekend.
They are out for the weekend and Monday. Poor George is in the Hospital having surgery for a kidney stone. Team Lonestar EV Racing is praying for a speedy recovery.
 
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