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06-01-20, 04:17 PM

#15

Emilio700

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Update after a few thousand miles of mostly offroad use. Had the nuts that hold the isospeed trunion in place come loose. Misdiagnosed as a loose headset so I rode on it for a while that way. Doh. Thankfully, the nuts (#22 in schematic) have a conical versus shank seat design. So the bosses in the frame weren't ovalized. A bit of tiny carbon fragments but I escaped a major frame repair. The nuts have an integral eccentric washer that keeps them from spinning as you turn the center bolt (#21) to torque down. The nuts were blue loctited from the factory. Cleaned and red loctited, then probably over torqued a wee bit. No play, all good now. The bolts on my Boone with front isospeed never came loose with maybe 3x the miles and a bunch of cross races. Maybe a different fastener design on the '18 Boone, dunno

So if you have a 2020 Domane and ride it off road, might not be a bad idea to preemptively pull those fasteners and red loctite them to factory torque spec.

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