In my humble opinion don't do it . You will find that there is a serious
history of crank failure on the 3300 when using prop. extensions I've seen
photo's of a broken crank and in fact had them until my computer crashed.
You are entering into a serious harmonics problem. MT propellers wouldn't
even sanction the use of the existing Jabiru prop flange, they made me one
free but I had to make my own method of reeming out the end of the threads
in the crank, having special shank cap screws made to fit the holes to
transfer drive without depending on the threads for torque and friction
transfer.
Harmonics is a black art and you can get stress multiplication and focus of
those stresses further along the crank between journals.
Regards
Bob Harrison .
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From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of Jeffrey J Paris
Sent: 26 August 2009 13:14
europa-list@matronics.com
Subject: [?? Probable Spam] Europa-List: Looking for a Prop Extension Flange
for a 3300
Dear Purveyors of all this Jabiru:
I am in search of a Prop extension flange for a Jab3300, does anyone have
one for sale?
Cheers,
Jeff Paris #A012 Europa Classic 1900+ hours in to the build ...it's getting
close!
Flying Zenith Zodiac-CH601xl 260 HOURS OF PURE FUN!
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