This is from another list.
Ryan
6:50.21.04
http://groups.yahoo.com/group/Q-LIST/message/10392
From: HawkiDoug@a...
Date: Thu Jan 2, 2003 8:34 am
Subject: VW type 4 fix
For those who might be interested, here's what we have come up with as a
fix
to my prop hub coming off last fall. To recap briefly, the end of a type 4
crank has a smaller taper on the very end and a "sleeve" is fitted over
the
end and then machined for the Force One Prop hub. We are confident this
was
the weak link and the source of the failure. Steve Bennett of Great Plains
and I looked at several solutions and the one both Steve & I liked best
was
to have a new crank made the way we want it made. It will actually be
better
than the std. VW crank. Cost= $1000.00. The other solutions looked to be
about half this cost, so it was a no brainer for me to spend the extra
money.
I believe I will still have about $5500.00 invested in the engine.
Steve sent a letter to his type 4 customers offering this option at his
cost
on this initial run. If things go as planned (do they ever?), I should be
back in the air by early summer.
Now, I have a question to you VW experts. What do you think of using
Lycoming thread to seal the case halves with? See any problems doing this?
Doug "Hawkeye" Humble
Omaha NE
N25974
A Sign Above
==============================
If there are cranks failing I personally really want to know who and why.
Tweedy and I are both getting older and would like to continue to do so
without having experienced crank failure.
So, this post is a call for any one with direct knowledge to sing out.
Orma L. Robbins Southfield MI
19 Years flying KR-2 N110LR (Tweedy)
http://www.aviation-mechanics.com
