tomtomterrific
Veteran Member
- Joined
- Jun 6, 2010
- Messages
- 33
This topic came up on my "overheating" post.* (Which was all resolved with the impeller replacement).
I picked up an inexpensive photo tach to*calibrate my teleflex/morse tachs.* I located the calibration adjustment screw(s) on the back of the gauges...problem is they were already "dialed down" as much as possible.
I chose to dial them "up" so that they would read exactly 2X what the actual engine RPM is.*
While I could easily live with this, I wonder if anyone knows how to reduce the signal the tachs get from the alternator?
Best as I can figure, the tachs were reading about 60% high (cruising at 7 knots @ "2500 RPM).* Engine now idles at 550-600 RPM.
Any thoughts?
Thanks!
Tom
I picked up an inexpensive photo tach to*calibrate my teleflex/morse tachs.* I located the calibration adjustment screw(s) on the back of the gauges...problem is they were already "dialed down" as much as possible.
I chose to dial them "up" so that they would read exactly 2X what the actual engine RPM is.*
While I could easily live with this, I wonder if anyone knows how to reduce the signal the tachs get from the alternator?
Best as I can figure, the tachs were reading about 60% high (cruising at 7 knots @ "2500 RPM).* Engine now idles at 550-600 RPM.
Any thoughts?
Thanks!
Tom