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Old 12-11-21, 10:10 AM
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Originally Posted by Rdmonster69 View Post
I have done builds before but they have been mashups with used parts etc and I never seriously asked these questions before.

1. I am installing a new Dura Ace crankset into a Chris King BB. How do I determine if I need the spacers included with the fit kit. The inner chainring is no closer to the chain stay than my other bikes. If I was assembling today I would probably just go for it and see if it worked OK and ad spacers if needed. If someone can tell me how to determine this beforehand that would be great. I am using a DA 11-30 cassette.
Assuming a 68mm bottom shell width and a 73mm bottom bracket , you should probably start with two 2.5mm spacers on the right and one on the left. If the bottom bracket is a road bottom bracket that is 68mm wide, you probably donít need any spacers.

2. I have a Chris King No Threadset headset that I pressed in. It is flush with the steering tube and solid in all respects. I have a 1 inch fork with a shim, stem and carbon spacers. When fit together (but not tightened)there is very slight movement when rocking the fork. My thought is some pressure on the stem to provide slight tension/downward pressure then in the assembly should eliminate this then tighten the stem. Am I on the right track or is there a definite technique. I have used this technique before with success on a different bike but with a different headset.
Yup. Thatís the way you adjust the bearing preload. Donít make it tight enough to bind the headset but also donít make it loose enough to allow for movement

3. Should the steerer tube be flush with the spacers or slightly recessed when installing and tightening the star nut? I can't remember for the life of me how I did it the last time.
Slightly recessed. It needs to be about 3mm (bit more than a US nickel) so that the cap doesnít sit on top of the steer tube.
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