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new to the roadie world. couple of ?'s(6 posts)

new to the roadie world. couple of ?'sxl_cheese
Sep 23, 2003 10:52 AM
I've been an avid mtn biker/racer for 6 or so years. I'm about a mid-pack expert and decided I should hit the road to obtain better fitness. I recently purchased a caad 5 frame/fork and just ordered parts for it. I must comment here that performance has killer deals on 03 dura ace.

All I lack in the build up is hbar, seatpost, and stem (I'm saving the stem for last).

1. I did a search about hbar sizing and it seems like it's more preference than shoulder size? Am I correct? Is there a big different between say a 42 and 44?

2. Will a std mtn bike stem work with a bar that has a 26.0 clamp size?

thanks!
re: new to the roadie world. couple of ?'sSteve_0
Sep 23, 2003 11:08 AM
1. it's mostly preference. Having too small a bar theoretically constricts the chest and therefore limits lung capacity. Too wide theoretically reduces aerodynamics. In actuallity, we're talking less than 1/2 inch displacement for each arm. I say personal preference.

2. Most MTB bars are 25.4, though you ~can~ force a 26.0 into a single-bolt stem (not an open face) with enough will; you'll be sacrificing integrity though.
Couple answers...biknben
Sep 23, 2003 11:09 AM
The size (width) of the bar is usually determined by the width of your shoulders. Some riders prefer wider or narrower bars. What you decide to go with is totally up to you. If you are of avg. size I'd recommend the middle size.

MTB stems and road stem are not interchangable. I believe MTB clamp size is 25.4mm while road stems are 26.0 or 31.7.
However...SenorPedro
Sep 23, 2003 2:53 PM
...the .6mm circumference difference does not make a huge impact on the diameter of the bar. If you run a 2 or 4 bolt stem, you will have a better ability to make any deflection of the setup even across the clamp. I have a 25.4 Ritchey WCS 4-bolt that I have run with a 26.0 stem for about 2000+ miles with no problems whatsoever.

There are also 25.4 road bars still available in a variety of widths from Nitto and other older manufacturers. (The old standard was 25.4 for road bars)
However...MShaw
Sep 24, 2003 12:03 PM
I've been running a 26.4 Cinelli in my Ritchey Pro stem for about 18 months now with no ill effects.

The difference between 25.4 and 26.0 isn't THAT big...

Re: bars. You want a pair of bars about as wide as your shoulders. You can either hold out a bar to see if your arms are straight, or have your shoulders measured.

Mike
To make an MTB stem work better...C-40
Sep 23, 2003 2:59 PM
with a road bar, file a chamfer about 1-1.5mm wide along the edges of the face plate and stem to eliminate the pinch point. Your bars will not know the difference after this minor modification.