New answers tagged stem
The answer is trigonometry. Most bikes have a headset angle of about 74°, give or take a degree. Over the adjustment range you're looking at that degree doesn't make a difference. Here, tan(74 degrees) = height change / reach change = ~3.5. So to get a centimetre of reach change to need to lift the stem 3.5cm, putting the stem up reducing the reach. Or you ...
This is your stem. As you can see, it is the whole unit from the bars to the top of the fork, including the adjustable bit in the middle. Most dan't have this and I think this is where the confusion is coming from. To remove your bars for packing, it is usual to remove the 4 bolts on the face plate on the stem. That is the part immediately touching the ...
I solved by detaching the other side and spraying the inside with WD-40. Then, simply tightening the screw on the other side led to the previously stuck side being drawn inward. To detach my handlebar, I instead followed the suggestion in arnes comment.
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