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-   -   Tach indicator problems (https://vansairforce.net/community/showthread.php?t=22727)

A6PILOT 10-22-2007 10:20 AM
Tach indicator problems
 
I just switched from LASAR to Slick mags and the RPM indicator shows about 1/2 the actual RPM on the VM1000. The transducer is the correct one for Slick mags P/N 3010005. I have the transducer mounted in the lower vent hole of the Model number 4370 Slick (Non Impulse coupled left mag) Before I purchase another transducer, I wonder if anyone has run into a similar problem?

John Collier 10-22-2007 06:02 PM
VM1000 RPM Setup?
 
Quote:
Originally Posted by A6PILOT (Post 164225)
I just switched from LASAR to Slick mags and the RPM indicator shows about 1/2 the actual RPM on the VM1000.
I'm not familiar with the VM1000s setup...but on the Dynon you must set a pulses per revolution depending on your tachometer source - maybe you need to check this on the VM1000 since your tach source changed?

N402RH 10-22-2007 07:10 PM
The Slick mag has half the number of pulses as the Lasar, you need to change the setting in the VM1000.


Rob Hickman
N401RH RV-4

A6PILOT 10-22-2007 07:43 PM
I talked to a tech rep today and he explained how to change the jumper in the data processing unit to get the correct readout. Thanks for the responses - problem solved.


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