Tacho Probs -- Welcome to the (UK) Pulsar Aircraft Owners forum.

[ Show ]

Support VoyForums

[ Shrink ]

VoyForums Announcement: Programming and providing support for this service has been a labor of love since 1997. We are one of the few services online who values our users' privacy, and have never sold your information. We have even fought hard to defend your privacy in legal cases; however, we've done it with almost no financial support -- paying out of pocket to continue providing the service. Due to the issues imposed on us by advertisers, we also stopped hosting most ads on the forums many years ago. We hope you appreciate our efforts.

Show your support by donating any amount. (Note: We are still technically a for-profit company, so your contribution is not tax-deductible.) PayPal Acct: Feedback:

Donate to VoyForums (PayPal):

[ Login ] [ Contact Forum Admin ] [ Main index ] [ Post a new message ] [ Search | Check update time | Archives: 1 ]

Subject: Tacho Probs

Author:
Alan Gill

[ Next Thread | Previous Thread | Next Message | Previous Message ]

Date Posted: Sun, Mar 10 2013, 11:58:23 GMT
In reply to: Bob P 's message, "Misbehaving rev counter." on Thu, Mar 07 2013, 10:52:37 GMT

Hi Bob.

First, I would check that ALL your earth connections are good. That is, the Brown wire at your STATOR, The White wire from your STATOR, and regulator earth.

The STATOR has two coils that feed voltage to the two transducers. Each STATOR coil has two feed wires, one being Green and the other White (Gn&Wh), and each (two off) Gn&Wh in a sheald that connects to the 2 transducers.
These transducers are what provides your HT to the sparking plugs.

Your tacho readings are taken from a tapping on ONE of the STATOR coils, and the cable colour is GRAY. Now disconnect both Gn&Wh from BOTH transducers. Also, disconnect the GRAY wire at your STATOR. Now with an mulimeter check the OHMS reading between the STATOR White and gray. It should read 1025 OHMS.

Readings between the STATOR Gn/Wh wires should be between 230 - 330 OHMS

... 1K OHM resistor is needed in the tacho system ...
If your tacho has a BLUE label on the back, then the 1K OHM resistor is with-in.

If your tacho has a RED label on the back, then the 1K OHM resistor should be inline to your GRAY cable. IF NOT, then your STATOR has this 1K OHM resistor ON THE STATOR itself (the latter applies up to engine serial number 3957334.

Regards ...> Alan

[ Next Thread | Previous Thread | Next Message | Previous Message ]

Replies:

Subject	Author	Date
Misbehaving rev counter	Bob P	Tue, Mar 12 2013, 11:45:12 GMT