REFLECTOR: MT Prop failure mode.

[davedent at comcast.net]

Berand, I have run into this problem before.  With the MT props the low 
pitch stop needs to be adjusted sometimes and it can get out of position if 
the two jam nuts on the low pitch stop is not locked together correctly.  I 
have found three MT props not correct right out of the box.  Most don't come 
safetied, because it needs to be adjusted in most cases. Lock the two nuts 
together and safety them together to keep them that way.  Use .040 wire. 
They move every time you change pitch.

Once I found one where the safety wire for the two nuts was secured to one 
of the fwd plate hold down bolts, so doing made the nuts so they couldn't 
move with the shaft like they should during pitch change.  They must be able 
to move fwd and aft during pitch change.  This also caused the nuts while in 
the high pitch positions to move further forward and changed stop to a 
greater pitch and eventually couldn't get it to come up to even governor 
control speed.

Right now it looks like to me the stop is not adjusted correctly and you may 
have to add some more bite into the low pitch position.  To do this, just 
brake the two nuts apart and rotate the inner one towards the cover plate. I 
have found that if you have five threads showing after the jam nut is tight 
to the inner nut, it's just about right. It may take another flat on the 
inner nut to get it just right but you can't tell this till you are 
unloading it as you start you take off roll.  Then you may have to move it 
just a flat or two more for good take off performance. This comes into play 
when you do your first high speed taxi test.

If you are getting the 2700rpm then the governor is working great and it's a 
stop issue.  If the inner plug in the inside of the crank is not plugged you 
couldn't get your governor to work and maintain the 2700rpm.  This don't 
seem to be your problem. If you can change pitch at all then the governor is 
working.  Let me know how it turns out.
Dave