m3240z
Part of things
Posts: 128
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Feb 26, 2013 22:45:22 GMT
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so how do i make up some sort of speed signal sender for my 240 m3 project, problem i have is that the M3 gearbox has no speed sender unit from the factory its on the diff but i'm not using the m3 diff, i intend using a new speedo like autometer brand which is quite happy to have various signals to make it work, could i use an ABS sensor fitted to a drive shaft hub anyone done anything like this ?
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hypo
Kinda New
Posts: 8
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Hi,
I had a similar issue with a conversion and used a "Hall Sensor" that picked up a signal (magnetic I think?)from the rear of the front wheel hub. From there it went to an electronic speedo. Best thing about this is that you can "set" the speedo yourself so you know it is correct.
Hope this helps.
Baz
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Copey
Posted a lot
Posts: 2,845
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Feb 27, 2013 12:33:02 GMT
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Last Edit: Feb 27, 2013 12:33:22 GMT by Copey
1990 Ford Sierra Sapphire GLSi with 2.0 Zetec
1985 Ford Capri 3.0 (was a 2.0 Laser originally)
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ChasR
RR Helper
motivation
Posts: 10,199
Club RR Member Number: 170
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speedo signalChasR
@chasr
Club Retro Rides Member 170
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Feb 28, 2013 20:23:59 GMT
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I guess you needed a compatable speedo for that Copey? I took the pricey route on mine I admit. The PO tried making his own using 2917 chip and board with an optical trigger wheel put onto the prop (it was not durable enough, so that went), and then he went to a Ford speedo sensor on a toothed trigger wheel. This on my car completely threw the balance of the prop out, and from what I have heard on here the chips are not the longest lasting items either. That and making a straight trigger wheel probably would not have been a cheap exercise for me. Now I have a Smiths speedometer with a digital mileage readout in addition to an LED speedo sensor. I can adjust the speedo around to the wheel diameter. I did initially use Sat Nav units and then my phone but keeping a reliable speedo setup was not always an option (especially under tunnels where sometimes camera hide). I also go fed up of almost getting rear ended when the speedo readings went a bit iffy and 'guessing' the speed. Before anyone says I could have gone off the rev counter, remember that the Stag is an auto, so there would have been quite a discrepancy in the revs to speed readings  . |
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Last Edit: Feb 28, 2013 20:25:38 GMT by ChasR
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Copey
Posted a lot
Posts: 2,845
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Feb 28, 2013 20:30:33 GMT
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by the sounds of it they will work with most electronic speedos as long as it works in either 4000, 8000 or 16000 PPM i would think an aftermarket speedo would work in one of those, worth checkin before hand though |
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1990 Ford Sierra Sapphire GLSi with 2.0 Zetec
1985 Ford Capri 3.0 (was a 2.0 Laser originally)
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andyborris
Posted a lot
Freedom is just another word for nothing left to lose.
Posts: 2,170
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A very cheap, but not pretty option is a pushbike speedo. Get a cheap one, they'll read any size wheel.
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i'm using a vdo gauge and have found these on ebay that work with my gauge.
221189412987
cheap at a fiver each.
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