So the bottom line is, modified FD sensor plus dakota box and I should be able to use my TII trans with just about any electric speedometer.

I might play with some other sensors, but at least I know I can accomplish what I am looking to do.

Another thought I had, (similar to the dakota box that takes a cable drive) was remotely driving a clusters matching speed sensor with an adapter from the stock RX7 cable to the electric sensor.

This will probably be a winter project, I'll post back once I have actually done it!

 

what settings would you use this in the rtek? or other ECU it's an AC signal thats pulsed once per tooth, soo how many teeth are there? i've only hear vague details about this. but i've been keeping my eye open for an abs rx7 in the pull apart.

 

Using an FC hub w/tone ring and ABS sensor is actually what I plan on doing on my Cosmo to get a VSS signal to my MS3-Pro.

Does the E6K have a VSS input? The E6X does but it must be a square wave. As in, you can't feed a VR sensor into it directly without first conditioning it (use a circuit base don the LM1815 like older Megasquirt installs did for the CAS).

I'm not sure how many tooth their are but it is many teeth per revolution, so one would have to do some math on tire diameter as most ECUs want a setting of "x pulses per mile". Can the RTek even handle a VSS input? I've never used one so I wouldn't know.

There are many options here. An old trick was to drill a small hole in the driveshaft flange on the diff, expoxy in a rare earth magnet, and mount a hall sensor just above. One pulse per rotation of the pinion.

 

if you can find one they are like 9 teeth, they look really weird. hard to find, as everyone threw them away, and they are either NLA or crazy money new

 

I forgot the spindle is needed as well.

In Canada I think a LOT more FCs got ABS. Must drop by the wreckers one of these days before they are all crushed.

 

its weird, Mazda has a different part number for ABS/non ABS spindles (and rear uprights), but think the later ones probably have the casting and its just drilled vs un drilled.

EDIT: after looking at a few, the rears seem to all have the casting, but the fronts don't

the hubs were the same, and the ABS rings were sold separately. my friend had this idea like 5 years ago, and new rings from Mazda were crazy money, and used ones are rare in the US. although now that you mention its more common in Canada, it may be more common in Japan too, as the GT-limiteds and verts all had ABS (GTR and GTX do not), so used from Japan is probably a good option.

or you could make something, the FC rings are tim burton-esque, and way different from anything you'd see from any other car