16 replies to this topic

[phil hill]

My understanding of the stack sensor is the same as you, that it will count a ferrous object passing in close proximity.  It's not a reed switch like in a cycle speedo, it is a proper hall-effect sensor.  If you can get the clearance correct and consistent to your wheel studs you should be ok.

 

I haven't used the pulse amplifier, the Salies sensor worked fine with my ST700.  As for calibration I did do some maths and try to calculate the circumference, then counted the revs of the speedo drive per revolution of the road wheel, and knowing the number of pulses from the sensor per rev this got me close, ish.............  Then I borrowed a GPS speedo and adjusted my settings until I got an accurate speed reading.  No doubt now there is an "app for that" if you have a smart phone, but a Sat-Nav would work just as well.

 

Phil. 

[DANTOO]

Thanks all for the replies, I like the idea of mounting the  ST670 on the rear back plate, does the sensor have to detect a magnet? i was under the impression that it simply detects moving ferrous components, so in my situation where i have used alloy rear hubs could i simply set it to detect the wheel studs?
 
I do like the idea of the gearbox mounted transducer, does using this mean that i would have to order the version of the dash display containing the ST492 pulse amplifier? My only concern is the calculations to calibrate the speedo, according to the manual the speedo is configured by entering wheel circumference and number of pulses per revolution, can anyone elaborate on how you set it up?

Yeah I'm looking at getting the drift iridium gauges but which use the gearbox also but it's the calibration part I'm worried about. I don't want to spend lots of money to find it won't calibrate 'enough'.