Singlespeed & Fixed Gear - Overtightened Stem w/ Deda Pistas

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Learn_not2burn
04-11-06, 04:36 PM
I had a squeeking coming from my front end (turned out to be a spacer jumpin' around), so I took everything apart. When I removed my Deda Pista bars from my stem, I realized that the back side of the handlebars is slightly deformed from the stem. I don't run my stem paul bunyun/chuck norris/andre the giant tight, just enough to not allow my bars to swing down when I put all my weight on them. Any one else have this problem? I am concerned because they are aluminum bars and I don't want them breaking on me. I'll try to put up pictures tonight.

gregg
04-11-06, 04:42 PM
What kind of stem are you running? Matching Deda Pista stem or?
baxtefer
04-11-06, 04:53 PM
25.4 stem m/ 26.0 bars?

Learn_not2burn
04-11-06, 04:54 PM
Nah, I'm using a felt stem.
Is the face on the Deda stem wider?
na975
04-11-06, 04:55 PM
mix match= bad!
rvabiker
04-11-06, 04:55 PM
Isn't the Deda pist OS...like 31.8?
Learn_not2burn
04-11-06, 04:57 PM
yeah, it is, 31.7 from the business cycles webpage, as well as world class cycles, but I've seen 31.8 quoted elsewhere as well (Edit: Felt's website says its 31.8.)
MY felt stem is oversized, and by coincidence is the exaxt stem that they spec with the TK-2, with the deda pista bars.
Mr Monster Legs
04-11-06, 05:39 PM
A guy I ride with used a Deda stem and the steal Deda bars. When he swapped out his stem, the bars were dented in. I guess it happens. He is still riding the bars and they seem to be fine. I ride the aluminum Deda bars and have had no problems yet.
humancongereel
04-11-06, 05:41 PM
yeah, i have deda pistas with an itm millenium stem. no problems at all.
Spor
04-11-06, 05:41 PM
yeah, wtf is up w/ 31.7 vs. 31.8? I always assume that's a typo but are there really 2 different standards that differ by .1mm? That just seems like the worst possible idea.
gregg
04-11-06, 06:15 PM
I haven't noticed any issue with my deda pista stem and bars - site lists them at 31.7 each. Perhaps the Felt stem has a narrower diameter than whats listed?
baxtefer
04-11-06, 10:12 PM
yeah, wtf is up w/ 31.7 vs. 31.8? I always assume that's a typo but are there really 2 different standards that differ by .1mm? That just seems like the worst possible idea.

31.7 and 31.8 are the exact same thing with two different names
they're really 1.25"

1.25" = 31.75mm. so one manufacturer rounds up to 31.8, another rounds down.