adding wheel speed sensors to early 911
 

Hi,

Does anyone have experience adding wheel speed sensors to an early 911 for enabling traction control on a modern ECU (e.g. Motec, Pectel)? What parts did you use? Any photos?

Thanks in advance...

-Steve

You could have a couple trigger wheels designed and water jet cut to fit on your cv joints. The photo below is just for ideas...I think I would go for no oblong mounting holes in the part, and just use a cv flange as a template.
So in theory, put one on each inner cv joint and that would give you a driven speed and the other would be ground speed. The trans side cover area has the best options for a sensor bracket with the other side being a bit more challenging.

The Motec Traction Control Multiplexer needs sensors on four corners.


http://forums.pelicanparts.com/uploa...1379136540.jpg

This is an idea that I've been contemplating for some time; I've looked here and there, but haven't found the right information.

I'm assuming a speed sensor of this type could also be used to add a 964 style hydraulic spoiler to my '87 targa.

Any ideas about that Scott?

This is what I did for speed input for my MXL dash, there is a magnet on the other keeper 180 deg opposite this one. The sensor is mounted on the diff cover on a 901. Granted this only gives two pulse/rev, so it might not provide the resolution for traction control.

http://forums.rennlist.com/rennforum...l-img_0005.jpg

It's a fairly complicated process. I bought a generic 60-2 wheel from clewitt, then added material to the missing teeth. My machinist/engine builder then located the teeth and cut it for the missing teeth. The axle flange was machined down to accept the wheel; we also had to turn down a piece of steel tubing(with a lip) to weld to the axle flange to accept the CV boot. He also machined a billet piece with a counter-sunk hole to receive the hall-effect sensor. Does it work? Don't know yet, preparing to start the car in the next couple of weeks. Hop over to the 930 section and check out the build.

SORRY, SEE PICS IN POST BELOW

http://forums.pelicanparts.com/911-930-turbo-super-charging-forum/701661-update-twin-turbo-930-efi-conversion.html

http://forums.pelicanparts.com/911-930-turbo-super-charging-forum/701661-update-twin-turbo-930-efi-conversion.html

http://forums.pelicanparts.com/911-930-turbo-super-charging-forum/741963-new-updated-pics-twin-turbo-efi-conversion.html

http://forums.pelicanparts.com/911-930-turbo-super-charging-forum/744074-final-assembly-pics-before-start-up-dyno-twin-turbo-efi-conversion.html

http://forums.pelicanparts.com/911-930-turbo-super-charging-forum/769689-few-updated-teaser-pics-930-twin-turbo-efi-conversion.html

Sorry forgot the

picshttp://forums.pelicanparts.com/uploa...1379201146.jpg

http://forums.pelicanparts.com/uploa...1379201173.jpg

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