Joined: Apr 2010
Posts: 13,496
Likes: 940
From: Boston-ish, MA
Bikes: 72 Peugeot UO-8, 82 Peugeot TH8, 87 Bianchi Brava, 76? Masi Grand Criterium, 74 Motobecane Champion Team, 86 & 77 Gazelle champion mondial, 81? Grandis, 82? Tommasini, 83 Peugeot PF10
In principle and assuming both can place the bar where you want, the positive stem could be lighter because it goes from the steerer tube directly to the bar clamp. A traditional negative stem goes up and backwards before saying "Oh, I need to be over there" and going forward to the bar. However the positive stem can't be lowered any further whereas the negative stem can be raised or lowered to its limits if you wish.
I'm going to be negative here. Go negative. The positive stem looks dorky. That's what really matters, izzn't?
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