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Old 10-29-2013, 04:44 AM   #1 (permalink)
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EV Automatic Gearbox Controller Project

Thought I'd start a thread on a new project I have just begun. Plan is to develop an open source arduino based controller for automatics. The ZF 5HP24 is my first victim as I need it for a new conversion project but also plan on looking at the 5HP18 and the CAN bus controlled 6HP26.

First installment is a general intro and look at the flexplate coupler design :


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Now, Cole, when you shift the gear and that little needle on the ammeter goes into the red and reads 2000 Amps, that's bad.
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Old 11-03-2013, 12:45 PM   #2 (permalink)
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Part 2 : Looking at the range switch and working out basic software to control the valves.

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Now, Cole, when you shift the gear and that little needle on the ammeter goes into the red and reads 2000 Amps, that's bad.
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Old 11-03-2013, 03:56 PM   #3 (permalink)
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Old 11-07-2013, 03:42 PM   #4 (permalink)
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Part 3 : A quick look at the adapter plate :

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Now, Cole, when you shift the gear and that little needle on the ammeter goes into the red and reads 2000 Amps, that's bad.
www.evbmw.com
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Old 11-07-2013, 07:33 PM   #5 (permalink)
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very cool, do you forsee doing away with the torque converter before it is all sorted out?

The efficiency curve is my main reason for asking...

Last edited by P-hack; 11-08-2013 at 05:58 AM..
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Old 11-08-2013, 03:56 PM   #6 (permalink)
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First look at the controller hardware
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Now, Cole, when you shift the gear and that little needle on the ammeter goes into the red and reads 2000 Amps, that's bad.
www.evbmw.com
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Old 11-13-2013, 05:01 PM   #7 (permalink)
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More work on the adapter plate. Now finished and ready to be mated to the gearbox. Just hope the damn thing fits ....

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Now, Cole, when you shift the gear and that little needle on the ammeter goes into the red and reads 2000 Amps, that's bad.
www.evbmw.com
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Old 11-18-2013, 02:41 PM   #8 (permalink)
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We have spin !!

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Now, Cole, when you shift the gear and that little needle on the ammeter goes into the red and reads 2000 Amps, that's bad.
www.evbmw.com
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Old 11-18-2013, 07:12 PM   #9 (permalink)
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wow! that trans is massive next to the motor. Do you already have some idea what the electrical pins do for controlling it?
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Old 11-18-2013, 07:26 PM   #10 (permalink)
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Why not just use direct drive and eliminate losses?

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