Originally Posted by
grolby
Huh, I've always heard the opposite - that you should have a small spacer above the stem so that torquing the bolts doesn't crush the end of the steerer, which is the weakest area. Either way, I wouldn't worry about it unless you have more than 2 cm or so of spacers stacked above the stem, or more than a couple mm of the stem stick up above the top of the steerer.
A small, i.e. 5mm spacer is one thing, and commonly recommended. A stack of spacers above is another.
http://cdn.specialized.com/OA_MEDIA/...n_Guide_r2.pdf
According to Cdale:
"DO NOT EXCEED THE MA XIMUM STA CK HEIGHT OR LO CATE SPACERS ON TO P OF THE STEM. MAXIMUM
STACK HEIGHT is a distance spacers may be stacked between the top of the head tube and the bottom of
the stem. Exceeding this distance with spacers or locating spacers on top of the handlebar stem can place
significant stress on the steerer tube. It could break.
For technical information and specifications, see http://www.cannondale.com/tech_center"
http://media.cannondale.com/media/Ma...ual_124451.pdf
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Last edited by merlinextraligh; 06-24-13 at 12:26 PM.