I got another problem. For some strange reason I think my tach is off.
Any of you EE types have any suggestions for making a cheap tach
that will work with mags? Preferably digital.

I am not an EE type (whatever that is) but:
How did you determine that it was off? and by how much?
Yvon

EE = electrical engineer.

Well it won't go over about 2200 RPM.
Never the less the airplane takes off and climbs out smartly.  The

performance is excellent and the engine is much smoother than my old O-470
because it has four dynamic balancers on the crankshaft instead of only two.

Now it could be that my prop governor fine pitch setting is off.  Or it could

be there is something wrong in the intake system as I don't seem to be getting
full manifold pressure either. I am still in the trouble shooting stage after
I installed the new engine in the C182. Perhaps the throttle cable is
bottoming out before the throttle is wide open. Could be the same problem with
the prop governor cable.

Paul Lamar

Check Tower Hobbies for visual (photocell) tachs at
http://www.towerhobbies.com/

They had some for $23.00.  Might be a cheap place to start for troubleshooting
on the ground.  Then again you might canabolize the $23 unit and remote mount
the photocell. should be an accurate cheap place to start.

Scott Moore
N-316RJ (Reserved)
juno@dog.com

      This is a Multi-Blade (2,3,4-blade) Digital IntelliTach Tachometer.
**Additional Technical Information Will Be Added As It Becomes Available.**

Some Important Differences Added to the IntelliTach over the standard Tach are:
          Improved optics and improved sensor.
          A digital microprocessor that safeguards accuracy and provides
              several nice functions like:
            It can be set to automatically read the type of prop you use most,
              whether it is a 2-, 3- or 4-blade style.
            It "remembers" the last three readings, so you don't have to.
            It shuts itself off after 5 minutes to save power.
More      LCD display flips up to a comfortable reading angle.
FEATURES: 0 - 32,000 rpm operating range readout is highly visible in
            large 1/2" (13mm), 5-digit LCD display.
          Measures rpm for peak engine performance up to 12" (305mm) from the
            propeller, and still gets readings accurate to the nearest 10 rpm.
          One-button operation to select among 2-, 3-, and 4-bladed props
            with prop selection indicator on left side of the display.
          Powered by one standard 9 volt alkaline battery (not included).

INCLUDES: One Digital IntelliTach Tachometer

REQUIRES: One 9 volt alkaline battery.

SPECS: ?  Length: 4-7/8" (125mm)   Width: 2-7/8" (73mm)  Thickness: 7/8" (22mm)

COMMENTS: Because of its sensitivity, this does not know whether it is
            looking at a propeller or an incandescent or florescent
            light, which typically strobes at 60 cycles per second or
            3600 cycles per minute.  When set for 2-blades it will
            read 360 or 3600, 3-blades: 270 or 2700 and 4-blades: 180
            or 1800.  This is a quick way to test the calibration.
            In direct sunlight this will read zero when turned on.

Too cool. You can't beat the price. $27.95
Thanks Scott.

Paul Lamar
 
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