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80 vs. 84 degree stems(4 posts)

80 vs. 84 degree stems5ive
Apr 13, 2001 2:29 PM
I'm considering raising the stem from my current 80 degree ITM Millennium to 84 degree Ritchey WCS. But I'm not sure if I will notice the difference (I want to). If there's not much of difference, I would have to goto 90 degree stems. If anyone out there have used both, could you please post your impressions on how different they felt? Thanx in advance.
do the mathDaveG
Apr 13, 2001 5:04 PM
Its no mystery. Stem rise = Sin(stem angle)*stem length. You'll need to adust stem angle based on head tube angle. Example with an 84 deg 12 cm stem and 73 deg head tube:
rise = sin(84-73)*12= 2.3cm
80/84/90 StemsXeke
Apr 14, 2001 4:27 AM
All other parameters remaining the same (Spacer height, head angle, etc), replacing an 80/120 mm stem with an 84/120 mm stem will raise the bar 7.5 mm (a little over 1/4"). Replacing the 80/120 mm stem with a 90/120 mm raises the bar 20.8 mm (about 13/16").
80/84/90 Stems5ive
Apr 14, 2001 1:04 PM
Thank you so much for the info. It was vey helpful!