EPAS for AE86

[rayhall]

I just fitted EPAS (Electric Power Assist Steering) to my car. It works very well. Here is some pictures...

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[Rice86]

i personally would never do this even if i was in the need of power steering, but good work i say

how does this compare to standard power steering

sorry what car is this on and what is the car used for? looks like a track hack car by the pictures

[Matt]

Looks good, keen to know the details as traditional power steering is a horse power thief...

[Gunner]

Would love to see a build thread from Ray. Would love to see what is powering this, especially considering the amount of 1000hp+ works of art come out of Ray Hall Turbocharging.

[rayhall]

i personally would never do this even if i was in the need of power steering, but good work i say

how does this compare to standard power steering

sorry what car is this on and what is the car used for? looks like a track hack car by the pictures

The AE86 is a rally car. EPAS has a lot of advantages over normal power steering. You do not need a power steering pump, oil lines and power steering rack. Also the EPAS only draws a maximum of 8 amps of power. Most steering moments draw less then 4 amps. This is why most new cars have EPAS now. Also if your are not tuning the wheel it draws nothing, unlike oil power steering.

The EPAS is dead silent, and very nice to steer.

The reason for fitting it other then the mentioned advantages is you can fit a quick rack and still have power steering. Something not possible with normal power steering.

Ray.

[rayhall]

Looks good, keen to know the details as traditional power steering is a horse power thief...

Yes uses ever little power, and far less complicated.

Ray.

[rayhall]

Would love to see a build thread from Ray.

I have pictures of the step by step process to fit the EPAS to the AE86 steering column. I will get them together and post them.

Ray.

[Matt]

Definately keen to do this for my track car(s)...

[slide86]

wow i love the engineering and "oh heres a problem, so im just going to make a solution for it now" mentality.

[rayhall]

Here are pictures showing most of the steps to fit the EPAS to the AE86 steering column.

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[Gunner]

Thanks for putting the pics up Ray, its great to see someone of your caliber on our forum. I hope we get to see more of your work. Even some of the boats haha.

[jakel]

I'm not a fan of electric power steering on these new cars i.e Toyota that use it but they have a weird system that has been known to fail and cause problems, like when we do a wheel alignment vsc and trc lights come on and have to recalibrate steering. But Toyota uses some thing so steering sensitivity on highway is reduced and then in car parks it turns the lower half of the steering shaft more so than the top that you are actually turning, but I doubt you would be using anything like this.

[rayhall]

I'm not a fan of electric power steering on these new cars i.e Toyota that use it but they have a weird system that has been known to fail and cause problems, like when we do a wheel alignment vsc and trc lights come on and have to recalibrate steering. But Toyota uses some thing so steering sensitivity on highway is reduced and then in car parks it turns the lower half of the steering shaft more so than the top that you are actually turning, but I doubt you would be using anything like this.

The EPAS is from a GM car. Not sure what model. There are no problems.

It comes with a potentiometer (knob) that lets you adjust the assistance. You can also order it will a ECU that adjusts the assistance with speed. This was quite expensive, so I made my own little controller and PC software to adjust the settings. I will be selling these to others. This is what the software looks like.

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[Matt]

Looking forward to it...

[jakel]

Ah ok, well there has just been a couple of cases in Australia that I have been told about at toyota training with the electric assist being two separate shafts not connected directly and there was one case of a rav 4 on the highway went to merge left and the car veered right, another was a yaris I think same deal went to turn right and ran up the gutter, but they do have a failsafe mode where it just locks the two shafts together, but unsure exactly how those two accidents occurred something to do with the yaw rate sensor.