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1. 08:50 PM - two propeller mounting questions (Troy Scott)
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| Subject: | two propeller mounting questions |
--> Glasair-List message posted by: "Troy Scott" <tscott1217@bellsouth.net>
Folks,
I'm almost ready to hang my 68 inch Hartzell prop (des. # F7068-2) on my
IO360B1E. I've removed the plastic cap from the forward end of the hollow
crankshaft of my pickled engine. I see, about five inches aft of the
forward face of the starter ring, a small tube about 5/16 inch in diameter
running perpendicular to the hollow crankshaft. It has an opening in one
side, presumably for the passage of oil. Also in the hollow crankshaft,
about an inch aft of the small tube, is what looks like a plug. Is this as
it should be for my constant speed propeller to function properly? I ask
because not long ago I read somewhere that a builder had "wasted a year"
trying to find why his prop didn't cycle properly. He finally discovered
that a plug hadn't been removed....
Now for another problem: I've been trying to install the spinner backing
plate on my hub. My instructions were probably written before the 68 inch
prop existed. It looks to me like I need to trim some material away from
the flat part of the back plate. There is no mention of this in my
instructions, but they do mention trimming the flange for propeller blade
clearance. On page G-206, revision S2-C, 5/15/97, I'm told to install 3/8
inch spacers between the hub and the back plate. When I try to install the
back plate, the plate bumps into the prop hub. It appears that I need to
remove some material from the back plate to allow the back plate to move
forward and touch the 3/8 inch spacers. If the 3/8 inch dimension for the
spacers is correct, apparently I need to remove enough material from the
plate to allow it to move forward .345 inch. Does this sound right? Does
this match your experience?
Regards,
Troy Scott
Glasair Super IISRG, N360TS
tscott1217@bellsouth.net
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