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OK guys, I need some help. Bought a pushbike speedo to use as my rotortach.Mounted it on the dash.It works perfectly-until I start the motor. Then the display flashes and it resets itself to configuration mode. It`s sometimes ok if I mount it on the joystick, but the minute I move it close to the instruments it resets itself again. I have earthed both ends of the shielded cable, and one by one I have disconnected each instrument(tacho,egt,engine temp,voltmeter,hourmeter, and wiring relay)but no good so far. Any ideas????? It`s a Rotax 582.
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Try only earthing one end of the cable.Earthing both ends is a common trick for young players.This will sometimes create an earth loop that can affect things.telfFlying - The knack lies in learning how to throw yourself at the ground and miss. (Douglas Adams-The Hitch-Hiker's Guide to the Galaxy)
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In my little game as a security installer, we do a fair bit of LAAN work with shielded cable, We earth only one end, and most usually at the controller, so at the tacho is the most likely place.Ah, coincidentally, sounds like a flat battery in the tacho to me..Hope this helps,Nick.
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thanks, guys, I`ll cross my fingers and try to earth at only one end.......
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OK, have tried earthing at no end, one end, each end and both ends - no difference!! any other ideas??
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just been browsing and thought it was worth an answer
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If this hasn"t been resolved yet, write back in this thread because i"ve had the same problem and fixed it and i"ll explain.
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disco , i sold my machine without a rotor tac but wouldnt mind knowing how you solved the prob ?
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How many cables were there between the sheild, one or two?????
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It may just be a bad battery connection in the tacho, try spinning the blades up by hand without the motor running, then tap the tacho or instrument panel to see what happens..HTHNic.
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http://www.asra.org.au/smf/index.php?topic=1837.0Almar, I purchased a Sigma Bike Cyclometer ( and along with Nicks help) and have Stratomaster smart singles instruments running off a little 12 volt battery stored in the instrument pod with instruments. I used a 12 core computer cable for my main loom. It is shielded! I used two of the unused cables within to route the power up to the sensor. The other cables in the bundle are instrument dedicated etc.
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Ok,Mine always worked from the start.
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Thank god I am ignorant of all things to do with The magical science of electricity!!!Every time I have used a pushbike speedo(usually a cat eye brand), I make the wire longer by using some old telephone extention cable with the joints soldered and heat shrinked.As long as the magnety part and the clicky bit are somewhere close to where they should live.....nothing seems to worry the tacho, doesnt seem to be a problem running the cable with any of the other wires, pre rotator, radio,ignition blah blah blah.Mark.
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Markus Maximus..You might call it electrickery..
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Once you have tried all the options mentioned..................... and yes I may repeat some of them anyway
Check if the problem still occurs if take tach unit is taken off the machine again with the shield connected to the
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