DIY Electric Car Forums banner
1 - 3 of 3 Posts

·
Registered
Joined
·
124 Posts
Discussion Starter · #1 ·
The Leaf seems to have a neat power steering system. It would be great to adopt this in my conversion if I can (which is a BMW 2002 form 1975 without any power steering).

From my understanding it seems all I need is:
  • Power from the original wiring harness
  • Original wiring control wires - not sure which controller these actually come from
  • Possibly steering orientation sensor - or this might only be needed for the braking controller
Does anyone have experience with this? or should I just give up and use the original manual system from the BMW.
 

·
Registered
Joined
·
124 Posts
Discussion Starter · #3 ·
I don't know anything about the Leaf's steering specifically, but modern steering power assist systems usually have a controller which gets steering angle and road speed inputs (as well as possibly driving mode selections) over CAN and use them to determine the amount of boost, which is then sent to the boost motor controller by CAN as well. If you're really lucky it runs at some default level of assistance without any communication, but I wouldn't count on it.

There are now power-assist units designed to be added to a steering column and intended for aftermarket use, not requiring any integration with OEM electronic controls. I have no idea how convenient they are to install, or their cost.

One issue with using the original rack with any kind of power assist is that the manual rack will likely be slower (more turns of the steering wheel required) than would be desirable with power assist.
Thanks for pointing out the expected "number of turns" or slower manual rack.

the system looks relatively simple - power & control wires. I am planning to keep the core wiring / controls so hopefully it is just a mechanical question (just like my other post on the brakes). I think I will keep the wiring etc to allow this steering to be reused and make a decision later.

ps. the car drives in this state.



120525
120526
 
1 - 3 of 3 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top