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jackbauer 10-29-2013 04:44 AM

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 :

jackbauer 11-03-2013 12:45 PM

Part 2 : Looking at the range switch and working out basic software to control the valves.

t vago 11-03-2013 03:56 PM


jackbauer 11-07-2013 03:42 PM

Part 3 : A quick look at the adapter plate :

P-hack 11-07-2013 07:33 PM

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...

jackbauer 11-08-2013 03:56 PM

1 Attachment(s)
First look at the controller hardware

jackbauer 11-13-2013 05:01 PM

More work on the adapter plate. Now finished and ready to be mated to the gearbox. Just hope the damn thing fits ....

jackbauer 11-18-2013 02:41 PM

We have spin !!

P-hack 11-18-2013 07:12 PM

wow! that trans is massive next to the motor. Do you already have some idea what the electrical pins do for controlling it?

ConnClark 11-18-2013 07:26 PM

Why not just use direct drive and eliminate losses?

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