Jon,
I won=92t say for sure on the Classic as the bolts I have for the XS ring m
ount (similar) appear to be US SAE grade 8 bolts or 10.9 Metric Hardness (+
830MPa or 120K PSI) which is hardened enough for the task without being to
o brittle. I would avoid anything lower grade. These bolts are loaded pr
imarily in shear so I worry more about the ring mount wear on the bolt if i
t is loose. This frame on the Classic and the later XS ring mount must be
shimmed tight. See Rotax for a shim kit if you must shim your mount for an
y reason.
Lockwood Aviation Rotax supplied Allens for the 914 ring mount appear to be
this grade also but there are no markings. Torque is 30NM-35NM depending
on the year manual you read and are black anodized and have the right hardn
ess...
Regards,
Bud Yerly
Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Window
s 10
________________________________
From: owner-europa-list-server@matronics.com <owner-europa-list-server@matr
onics.com> on behalf of italianjon <jon.catilli@gmail.com>
Sent: Monday, April 2, 2018 7:35:37 AM
Subject: Europa-List: Classic Engine Mount M10 Bolts
Hi All,
On the Classic, the M10 bolts that hold the engine to the engine mounting f
rame. The M10x55 and M10x130 in the Europa Classic Build Manual... Is there
anything special about them, are they standard 'off-the-shelf' DIN912's? 8
.8 or 10.9?
It's difficult for me to see the designation markings on mine, and I'd like
to have required parts before starting my job.
Best
Jon
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