Ask Scrod
09-12-12 | 11:08 AM
#5376
Thread Starter
Your cog is slipping.
Joined: May 2009
Posts: 26,053
Likes: 100
From: Beverly MA
Bikes: EAI Bareknuckle
Hi Scrod,
I was looking for a Dimension stem and noticed a few sellers stating they are not for use with a carbon steerer (or carbon handlebars). Dimension's website says they don't recommend it. Is this a case of Dimension and the sellers being overly cautious or is there a real reason why they shouldn't be used together? I haven't seen this warning on any other stem. Thanks!
I was looking for a Dimension stem and noticed a few sellers stating they are not for use with a carbon steerer (or carbon handlebars). Dimension's website says they don't recommend it. Is this a case of Dimension and the sellers being overly cautious or is there a real reason why they shouldn't be used together? I haven't seen this warning on any other stem. Thanks!
09-12-12 | 11:47 AM
#5377
09-12-12 | 08:31 PM
#5378
Senior Member
Joined: Feb 2011
Posts: 184
Likes: 0
Scrod....RiBMo question...
Currently running 28c...will I sacrifice that much on puncture resistence going with 25c?
28c feels a tad sluggish, so considering 25c.
Currently running 28c...will I sacrifice that much on puncture resistence going with 25c?
28c feels a tad sluggish, so considering 25c.
09-12-12 | 08:42 PM
#5379
Thread Starter
Your cog is slipping.
Joined: May 2009
Posts: 26,053
Likes: 100
From: Beverly MA
Bikes: EAI Bareknuckle
The 25 is just as puncture resistant.
Have you tried upping your psi? My 28c Rando is rated for 85psi but I typically keep about 110 in there and the ride is amazingly better.
Have you tried upping your psi? My 28c Rando is rated for 85psi but I typically keep about 110 in there and the ride is amazingly better.
09-12-12 | 08:43 PM
#5380
might be Phil Schwartz
Joined: Jul 2012
Posts: 350
Likes: 0
From: 5280
Bikes: thats none of your information BF
could be a dumb question or I could be a dumb person... whats the significance of that bella italia saddle you got for your windsor? I picked up a bike on craigslist that had one of those (not the "condor") on it, but I just put it in the garage because I had another saddle I liked better, anyways
09-12-12 | 08:49 PM
#5381
Thread Starter
Your cog is slipping.
Joined: May 2009
Posts: 26,053
Likes: 100
From: Beverly MA
Bikes: EAI Bareknuckle
I wanted something vintage, semi-period correct and Italian. The Selle Italia Condor is actually a pretty rare saddle. I hope my ass gets along with it.
09-12-12 | 08:51 PM
#5382
might be Phil Schwartz
Joined: Jul 2012
Posts: 350
Likes: 0
From: 5280
Bikes: thats none of your information BF
yeah I need to take a second look at the one I scrapped in my garage, might be a cool addition to a future build. thanks though
09-12-12 | 08:54 PM
#5383
Senior Member
Joined: Feb 2011
Posts: 184
Likes: 0
Right on...thanks.
Yeah, I keep it at 100psi and they roll pretty good.
Yeah, I keep it at 100psi and they roll pretty good.
09-12-12 | 08:56 PM
#5384
Senior Member
Joined: Jun 2008
Posts: 13,767
Likes: 3,937
From: Louisville, KY
Scrod, I thought you were a taller dude like myself (at least you're over 6' right)? Isn't the 56 cm Windsor a little small for a 6' dude? Looks like it'll be cool though.
__________________
Bikes: 1996 Eddy Merckx Titanium EX, 1989/90 Colnago Super(issimo?) Piu(?),1990 Concorde Aquila(hit by car while riding), others in build queue "when I get the time"
Bikes: 1996 Eddy Merckx Titanium EX, 1989/90 Colnago Super(issimo?) Piu(?),
09-12-12 | 08:56 PM
#5385
Thread Starter
Your cog is slipping.
Joined: May 2009
Posts: 26,053
Likes: 100
From: Beverly MA
Bikes: EAI Bareknuckle
I'm 5'10". The Windsor's got a 56cm top tube, which will be just right.
Last edited by Scrodzilla; 09-12-12 at 09:01 PM.
09-12-12 | 08:58 PM
#5386
Fixie Infamous
Joined: Dec 2011
Posts: 10,480
Likes: 28
You've recently been trying to loose a little weight.
I think your body weight is super skewed by your hair. How much do you think your hair weighs?
I think your body weight is super skewed by your hair. How much do you think your hair weighs?
09-12-12 | 08:59 PM
#5387
Cat Enthusiast
Joined: Aug 2011
Posts: 2,227
Likes: 0
From: Plymouth, MI
Bikes: All City Nature Boy
Did you receive it yet or are your PR pics from the auction?
09-12-12 | 09:02 PM
#5388
Thread Starter
Your cog is slipping.
Joined: May 2009
Posts: 26,053
Likes: 100
From: Beverly MA
Bikes: EAI Bareknuckle
It will be here tomorrow! I'm going to close the shop and spend all day snuggling with it on the couch.
09-12-12 | 09:04 PM
#5389
Cat Enthusiast
Joined: Aug 2011
Posts: 2,227
Likes: 0
From: Plymouth, MI
Bikes: All City Nature Boy
09-12-12 | 09:04 PM
#5390
Goes to 11.
Joined: Oct 2010
Posts: 2,548
Likes: 4
From: Wichita, KS, USA
Bikes: 2015 Soma Double Cross
I learned about carbon steerers and most clamping systems on stems and seatposts a while ago, I don't remember the context but I thought it was interesting.
Apparently symmetrical clamping systems like you find on many stems and seatpost collars can cause undue pressure on a localized point of the carbon tube, leading to premature catastrophic failure. Asymmetrical systems spread the load over a greater surface area, preventing fatigue of the carbon parts. That's likely why Dimension recommended not to use their stems on carbon steer tubes. Stems with sections cut out between pinch points can also cause a failure due to point load.
Here's one explanation of the phenomenon. Also, I am RIPPED right now, hope this came across coherently.
Apparently symmetrical clamping systems like you find on many stems and seatpost collars can cause undue pressure on a localized point of the carbon tube, leading to premature catastrophic failure. Asymmetrical systems spread the load over a greater surface area, preventing fatigue of the carbon parts. That's likely why Dimension recommended not to use their stems on carbon steer tubes. Stems with sections cut out between pinch points can also cause a failure due to point load.
Here's one explanation of the phenomenon. Also, I am RIPPED right now, hope this came across coherently.
09-12-12 | 09:06 PM
#5391
Thread Starter
Your cog is slipping.
Joined: May 2009
Posts: 26,053
Likes: 100
From: Beverly MA
Bikes: EAI Bareknuckle
Not sure what it all weighs but I have one dread in the back that has a circumference of nearly 8" at it's widest spot (about as big around as a beer can) and weighs nearly 200g.
Last edited by Scrodzilla; 09-12-12 at 09:11 PM.
09-12-12 | 09:08 PM
#5392
Kitten Legion Master
Joined: May 2010
Posts: 900
Likes: 1
Bikes: Fuji silhouette, Dawes SST-aL
Are Pake chainrings anygood?
09-12-12 | 09:08 PM
#5393
Fixie Infamous
Joined: Dec 2011
Posts: 10,480
Likes: 28
That's ****ing impressive. hahahahaha.
09-12-12 | 09:11 PM
#5394
Thread Starter
Your cog is slipping.
Joined: May 2009
Posts: 26,053
Likes: 100
From: Beverly MA
Bikes: EAI Bareknuckle
I just took an actual measurement and edited my post. 
09-12-12 | 09:11 PM
#5395
Thread Starter
Your cog is slipping.
Joined: May 2009
Posts: 26,053
Likes: 100
From: Beverly MA
Bikes: EAI Bareknuckle
09-12-12 | 09:15 PM
#5396
Senior Member
Joined: Apr 2012
Posts: 674
Likes: 0
From: Brooklyn,NY
ninja stars.
09-12-12 | 09:24 PM
#5398
Senior Member
Joined: Jun 2008
Posts: 13,767
Likes: 3,937
From: Louisville, KY
Ah I see, I was figuring if the seat tube CTT was 56 (which is what I figured the 56 meant) it'd have a 54 top tube. Guess that's why I don't do it for a living like you do.
__________________
Bikes: 1996 Eddy Merckx Titanium EX, 1989/90 Colnago Super(issimo?) Piu(?),1990 Concorde Aquila(hit by car while riding), others in build queue "when I get the time"
Bikes: 1996 Eddy Merckx Titanium EX, 1989/90 Colnago Super(issimo?) Piu(?),
09-12-12 | 09:30 PM
#5399
Thread Starter
Your cog is slipping.
Joined: May 2009
Posts: 26,053
Likes: 100
From: Beverly MA
Bikes: EAI Bareknuckle
It's actually got a 55cm seat tube/56cm top tube, which will be great for me.
09-12-12 | 09:30 PM
#5400
Still kicking.
Joined: Oct 2002
Posts: 19,659
Likes: 47
From: Annandale, New Jersey
Bikes: Bike Count: Rising.
How hard should I go tomorrow?
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Appreciate the old bikes more than the new.
Appreciate the old bikes more than the new.