Don,
A few more details. I have 145 hours on the airplane. I had a
strong shimmy incident back in January and had my strut rebuilt
afterwards. I inspected the mount after the shimmy and either missed the
cracks or they have developed in the ~30 hours since. I'm not sure if the
cracking is due to the shimmy or not. The other ES with engine mount
cracks similar to mine hasn't had any shimmy problems.
Around January of '03 Lancair added additional bracing on the ES mounts
that seems to be holding up well. All of the cracking so far has been in
mounts prior to the additional bracing (that I know about). My plan is to
remove my mount and send it back to Lancair for stripping, inspection, welding
of the cracked areas, installation of the additional bracing and powder
coating. I'm also buying the new, redesigned strut.
The ES group on Yahoo is working to get everyone to do a thorough
inspection of the engine mount. We have one owner who installed a Lycoming
and has the original mount for the Continental. We are considering sending
it back to Lancair for the mods and then shipping it out to the "next guy" so he
can do the mount R&R without waiting for the work to be done. Then his
mount goes in for the "next guy". There may be several owners who want to
get the updated bracing even though they haven't had any signs of
cracking.
Mike