Threaded Headset Question (again)
04-01-22 | 09:04 PM
#1
Thread Starter
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Joined: Jan 2014
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From: Utah
Bikes: '88 Trek 1200, '91 Trek 1400
Threaded Headset Question (again)
Sorry, one more headset question.
How much of a gap should be between the top of the lock nut and the top of the steerer? I can stack either 6mm or 8mm of spacers under mine, and the 6mm is just barely bottomed out, and 8mm leaves a 2mm gap.
Thanks.
How much of a gap should be between the top of the lock nut and the top of the steerer? I can stack either 6mm or 8mm of spacers under mine, and the 6mm is just barely bottomed out, and 8mm leaves a 2mm gap.
Thanks.
04-01-22 | 09:09 PM
#2
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From: New Zealand
Bikes: Gunnar, Concorde, Peugeot 753, Marin, Pete Tansley, Rocky Mtn, Worldrider, Francis Quinlan, Bob Jackson, Winora, Avanti, Klein, Quintana Roo, Shogun, Carlton, Emmelle, Specialized
As little as possible, while still allowing the lock nut to be tightened enough.
Last edited by Soody; 04-01-22 at 09:58 PM.
04-02-22 | 06:43 AM
#3
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From: Utah
Bikes: Paletti,Pinarello Monviso,Duell Vienna,Giordana XL Super,Lemond Maillot Juane.& custom,PDG Paramount,Fuji Opus III,Davidson Impulse,Pashley Guv'nor,Evans,Fishlips,Y-Foil,Softride, Tetra Pro, CAAD8 Optimo,
Seems like the 8mm should be the ticket then. Sometimes it's hard to tell when the locknut is bottoming out until the headset keeps coming loose on rides. Went through that on one of mine and finally just added another thin spacer to fix it. As long as most of the the treads are engaging I can't see how you should have any problem.
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Steel is real...and comfy.
04-02-22 | 08:27 AM
#5
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From: Appleton WI
Bikes: Several, mostly not name brands.
If the locknut bottoms out on the steer tube, you need a thicker spacer. There needs to be a gap of some sort between the locknut and the top of the steer tube to properly set bearing preload. As long as at least three threads on the locknut are engaged, you should be fine.
