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Dave,
The RMI Tach circuit has a glitch filter which will prevent RPM readings above about 4500.
On mine I changed a resistor value to allow readings up to 7500 RPM.
It is a simple change.
I don't have the schematic here at home so I cannot tell you how to fix it until I go to work and review what I did.
I will send you the fix tomorrow.
Jim Maher
-----Original Message-----
From: DaveLeonard [SMTP:daveleonard@cox.net]
Sent: Sunday, May 23, 2004 2:15 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Two problems solved, 2 more pop up...
Snip
New Problem: RMI tach no good. According to my RMI engine monitor I have
about 4300 RPM at 24 MAP. At 29 MAP I still only have about 4500 RPM and at
35 MAP I am still at 4500 RPM static. I dont buy it because it sure sounds
different (faster). So I have to install an accessory Tachometer....
Snip
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