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1. 06:44 AM - Crankcase fretting (barrynorman@comcast.net)
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| Subject: | Crankcase fretting |
I finally got the new crankcase and fasteners for the 912S yesterday. The new design
is very different. The fasteners are designed to be torqued and then stretched
in several of most of the critical areas. In addition, the clamping is
done by using bolts that go completely through the case instead of relying on
threads in the case. I believe this allows for much higher tension and less chance
of relaxation. They use thread sleeves at the end of those critical bolts
in 8 spots to attach the studs that retain the jugs. The other areas that used
to be threaded with helicoils are now big beefy steel inserts that appear to
be threaded in. This new case is machined different to use these new fasteners.
Looks like a much better design.
Barry
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