Steering tube/stem height difference
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Steering tube/stem height difference
My aluminum steerer on the fork is cut and the spacers and stem leave the top of the steering tube 2 mm below the top of the stem as standard. What if I were to add another 5mm spacer to lift the stem and bar slightly but now the top of the steering tube would be about 7 mm below the top of the stem. At what point is safety a concern with less steering tube being held onto by a smaller amount of stem?
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The recommended amount is 2-3 mm. A gap of 7mm is more than recommended and may leave the top bolt of the steerer clamp above the top of the steerer tube. I wouldn't do it. How much it compromises safety, I don't know, but I'd never attempt to find out experimentally myself.