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Crown Race Seat Diameter

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Old 01-11-19, 11:08 AM
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TiHabanero
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Crown Race Seat Diameter

Have any of you seen a 1" road fork with a 30mm crown race seat diameter? My understanding is 26.4mm and 27.0mm are the two standards for 1 inch forks.
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Old 01-11-19, 11:59 AM
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2nd guessing..

Cut it down if you cannot put a standard headset on it..


perhaps they left it oversize, so you can choose ISO or JIS headsets.. ..and cut the crown race to suit.
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Old 01-11-19, 12:14 PM
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I suppose one could make a 1" steerer's crown seat at 30mm. But why? Only reason I see is to be able to use a 1" steerer in a frame designed for a 1 1/8" system. But then you'd also have to address the upper stack mismatch too. Andy
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Old 01-11-19, 01:18 PM
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The reason for the question is I was looking at the specs on a 1" headset and it shows the cups fit a 30.1 head tube and the crown race fits 30. Doesn't make sense to me.
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Old 01-11-19, 03:00 PM
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Doesn't make sense to me, either. Can you post a link to the specs?
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Old 01-11-19, 03:35 PM
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Friend of mine asked me to look into this headset: https://www.jensonusa.com/Cane-Creek...dition-Headset

I told him to get it and order the correct crown race from me if it really is 30mm.
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Old 01-11-19, 04:20 PM
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If you look on the right side of the page at the box that states the color and size specs you'll see a reference to "EC30/26" as in the lower HT ID is 30 and the crown seat is 26 (actually 26.4). The "30mm is a typo in the text portion of the page. You could also go directly to the Cane Creek site and double check. Andy
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Old 01-11-19, 04:27 PM
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I looked at Jenson's web site and that headset crown race description in the summary table has to be a typo. The actual order line reads: Gold EC30/25.4/EC30/26, Straight. The press in cups are 30 mm for a 1" (25.4 mm) steerer and the crown race is 26.4.

Hmmm, Andy types faster than I do but we certainly agree.
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Old 01-11-19, 07:28 PM
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I called them and spoke to somebody and pointed out the 30mm spec. Not sure that person understood what I was talking about. Just wanted to be sure I was not mistaken on the two sizes for crown races. My friend, Tim, just has to have gold and the 110 Cane Creek. I told him he can get gold in Chris King, too, but he wanted this headset for some reason. My guess is because he has a Cane Creek headset already and the wheels he had from them were incredibly durable. Told him a Chris King from me won't cost that much more and really is way over the top well made.
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