REFLECTOR: ALL FIRED UP

[Scott Derrick]

Usually you need about 1200 rpm to notice the change in cycling a prop, 
though its standard to do it at 1700 or something near that.

How do you know the gov is working?  pressure gauges?

mineral oil won't make any difference.

I'd sure get that RPM indicator fixed if I was testing an engine. Kinduv  a 
basic instrument... like oil pressure...

Scott


At 01:03 PM 8/19/2004, you wrote:
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>I'll help break the silence.  I have fired up my IO-540 about 5 times so 
>far.  It runs great and has a Lightspeed Electronic Ignition.
>
>However, when it comes to cycling the prop ... I never notice a change in 
>pitch!  (I have an MT 4-blade)
>
>I know the governor is working and I removed the plug from the shaft ...
>
>Someone said you really have to crank it up in RPM to get a change in 
>pitch or it'll be too slow to notice.
>
>Unfortunately, I did not have my tack hooked up for these initial 
>firings.  The tach is part of my EFIS system which has not yet been 
>calibrated.  So, I can't really say what RPM I was running.
>
>It sure felt like enough to get at least some indication!  Any ideas?
>
>I am using straight mineral oil on my new engine (if that makes a 
>difference).
>
>
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