CDI tach signal pickup for yamaha yz125 dirtbike.
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0).
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
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4cefedtiburon
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CDI tach signal pickup for yamaha yz125 dirtbike.
Im thinking of playing around with fuel injecting my 2001 yz 125 dirtbike. The bike uses a cdi ignition and I have a stator/windings (alternator) capable of about 4-5amps would this be capable of running a small fuel pump and the ms with all sensors? anyway to the real root of the question is it possible to pick up a tach signal from a CDI ignition? I currently have an ms on my car and was just wanting to see what else i could do. Any info would be great.
Email T4turbotiburon@aol.com
I am just getting ready to fire up something with an RM250 ignition fitted. The VR sensor works fine with the V3 input circuit, the one with the 2 adjustable resistors in it, it doesn't even seem bothered about polarity. I'm cranking it with a drill at the moment to verify everything works as it should. I guess your YZ will be the same. I have other bike ignitions (Japanese MX & road race) around and they are all pretty much the same - fixed VR and a pickup on the flywheel. The only thing to watch is the stator can be high voltage to fire the CDI directly (300v) so an ordinary regulator won't work. 4-5 amps may not be quite enough. I'm planning to run a battery + alternator and re-charge the battery between runs.
Guy.
Guy.