Ride, Wrench, Swap, Race
Join Date: Jan 2010
Location: Northern California
Posts: 9,193
Bikes: Cheltenham-Pedersen racer, Boulder F/S Paris-Roubaix, Varsity racer, '52 Christophe, '62 Continental, '92 Merckx, '75 Limongi, '76 Presto, '72 Gitane SC, '71 Schwinn SS, etc.
Mentioned: 132 Post(s)
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If we can home in on a best name for the "crown race seating ring"(?) I have to say I got the "ring" part from Bad Lag's wording.
And yeah, with a cartridge bearing headset I have also often heard of it being called just a "crown race" in that context.
And we're still itching to see a photo of the broken parts, i.e. the nature of the fracture. It's possible to harden a lower grade or lower purity of steel that then would then have relatively low tensile strength and/or would have weak spots where a fracture could develop.