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italianjon
Joined: 05 Aug 2015
Posts: 68
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 Posted: Mon Apr 02, 2018 3:35 am Post subject: Classic Engine Mount M10 Bolts |
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Hi All,
On the Classic, the M10 bolts that hold the engine to the engine mounting frame. 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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budyerly(at)msn.com
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| Posted: Mon Apr 02, 2018 6:00 am Post subject: Classic Engine Mount M10 Bolts |
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Jon,
I won’t say for sure on the Classic as the bolts I have for the XS ring mount (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 too brittle. I would avoid anything lower grade. These bolts are loaded primarily in shear so I worry more about the ring mount wear on the bolt if it 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 any 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 hardness...
Regards,
Bud Yerly
Sent from Mail for Windows 10
From: owner-europa-list-server(at)matronics.com <owner-europa-list-server(at)matronics.com> on behalf of italianjon <jon.catilli(at)gmail.com>
Sent: Monday, April 2, 2018 7:35:37 AM
To: europa-list(at)matronics.com
Subject: Classic Engine Mount M10 Bolts
--> Europa-List message posted by: "italianjon" <jon.catilli(at)gmail.com>
Hi All,
On the Classic, the M10 bolts that hold the engine to the engine mounting frame. 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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italianjon
Joined: 05 Aug 2015
Posts: 68
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| Posted: Mon Apr 02, 2018 6:10 am Post subject: Re: Classic Engine Mount M10 Bolts |
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Hi Bud,
Thanks for the reply. I have a suspect oil leak from the starter, and the engine frame is in the way of the removal.
It's a simple, undo, swing the engine forward a little bit, swap the starter and re-fit. No re-shimming should be needed, as I'm not changing anything in the setup.
It shouldn't take too long, to do. I just want the right bolts. I'll order some 10.9's
Best
Jon
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budyerly(at)msn.com
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| Posted: Mon Apr 02, 2018 6:22 am Post subject: Classic Engine Mount M10 Bolts |
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It shouldn’t, but be prepared. I’ve found a Classic that when the engine frame was unbolted, it sprung out a ¼ of an inch. Plus, oil leaks can be a bugger.
Bud
Sent from Mail for Windows 10
From: owner-europa-list-server(at)matronics.com <owner-europa-list-server(at)matronics.com> on behalf of italianjon <jon.catilli(at)gmail.com>
Sent: Monday, April 2, 2018 10:10:19 AM
To: europa-list(at)matronics.com
Subject: Re: Classic Engine Mount M10 Bolts
--> Europa-List message posted by: "italianjon" <jon.catilli(at)gmail.com>
Hi Bud,
Thanks for the reply. I have a suspect oil leak from the starter, and the engine frame is in the way of the removal.
It's a simple, undo, swing the engine forward a little bit, swap the starter and re-fit. No re-shimming should be needed, as I'm not changing anything in the setup.
It shouldn't take too long, to do. I just want the right bolts. I'll order some 10.9's
Best
Jon
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italianjon
Joined: 05 Aug 2015
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