Wheel Speed Sensor Location

Technical and Repair Discussions

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Joined: Thu Aug 01, 2013 8:14 am
PostPosted: Mon Aug 03, 2020 10:10 pm
I am installing, in my Gen2, a used Race Technology DASH2 that I recently picked up. It was installed on a different type of car. I am looking for suggestions on a simple, robust location for the wheel speed sensor. Any suggests would be appreciated.
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Joined: Wed Nov 30, 2011 12:21 am

Chassis:
595
PostPosted: Tue Aug 25, 2020 6:14 pm
I've used both proximity and magnetic. The proximity sensor was more difficult as the clearance needed to be fairly tight to get a reading. I also used steel springs pressed into holes I drilled in the backside of the hub (two), then a piece of angle aluminum mounted to the upright to mount the sensor close enough to pick up a signal from the two pins. This all works well if the hub bearing is tight, but the close tolerances were problematic with any wobble in the hub.

I later went with magnetic sensors mounted to the transmission with an angle bracket to align the sensor to read the rotation of the inner rear CV joint where I glued on some small neodymium magnets (think I went with three but one will work). The clearance is more tolerant so I could mount the sensor with enough gap to deal with any play. I found that just some RTV was generally sufficient to keep the magnets in place (though I also kept some extra magnets in case I had lost one or had to change inner CV.)
Bob Breton - SRF 51 - San Francisco Region

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Joined: Thu Aug 01, 2013 8:14 am
PostPosted: Mon Aug 31, 2020 5:19 pm
Thanks Bob. I have been trying to get it to work on the front, so that I do not have wheel spin issues, but the rear may be easier. Wheel spin is probably not a big deal with our cars.

Forum Hermit
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Location: Oregon
Chassis:
404
PostPosted: Tue Feb 23, 2021 1:14 pm
You may want to mark your rear rims and tires. Then watch to see if you are having the tire rotate on the rim.

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