Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 06-14-12, 05:18 PM   #1
Floriante
Junior Member
Thread Starter
 
Join Date: Apr 2009
Bikes:
Posts: 17
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Is this a sucessful cutting of my carbon handlebar?

I have just cut my carbon handlebar (4cm from each side). Everything looks very fine but the problem is one side is cut about 1-2 mm longer than the other side.

Is this going to present a problem or is it ok? I mean is it going to make me lean more to the other side etc


Attached Images
File Type: jpg Untitled.jpg (3.5 KB, 62 views)
Floriante is offline   Reply With Quote
Old 06-14-12, 05:23 PM   #2
HillRider 
Senior Member
 
Join Date: Aug 2005
Location: Pittsburgh, PA
Bikes: '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
Posts: 28,854
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 66 Post(s)
A assume you can still place your hands symetrically on the bars so, no, your aren't doomed to turn one way all the time.
HillRider is offline   Reply With Quote
Old 06-14-12, 05:53 PM   #3
FBinNY 
Senior Member
 
Join Date: Apr 2009
Location: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
Posts: 29,688
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 232 Post(s)
As they say, "measure twice, cut once", but it's OK as is. Don't make the mistake of the guy who kept trimming the legs of his dining table so it wouldn' rock, and ended up with a coffee table.

Assuming you don't palm the ends, it doesn't matter if the part beyond your grip is a bit longer or shorter. Of course one of your riding buddies might show up with a ruler and start calling you a shoemaker (Italian slang for crappy mechanic). BTW- tank a minute to put a clear sealant (even nail polish is OK) on the face of the cut.
__________________
FB
Chain-L site

An ounce of diagnosis is worth a pound of cure.

“Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin

“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN

WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FBinNY is offline   Reply With Quote
Old 06-14-12, 05:59 PM   #4
Floriante
Junior Member
Thread Starter
 
Join Date: Apr 2009
Bikes:
Posts: 17
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by FBinNY View Post
As they say, "measure twice, cut once", but it's OK as is. Don't make the mistake of the guy who kept trimming the legs of his dining table so it wouldn' rock, and ended up with a coffee table.

Assuming you don't palm the ends, it doesn't matter if the part beyond your grip is a bit longer or shorter. Of course one of your riding buddies might show up with a ruler and start calling you a shoemaker (Italian slang for crappy mechanic). BTW- tank a minute to put a clear sealant (even nail polish is OK) on the face of the cut.
i measured it twice but didnt work as it should be i guess.

By the way, i used park tool carbon specific blade. do i still have to put the sealant? i already installed ritchey wcs bar plugs :S
Floriante is offline   Reply With Quote
Old 06-14-12, 06:09 PM   #5
HillRider 
Senior Member
 
Join Date: Aug 2005
Location: Pittsburgh, PA
Bikes: '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
Posts: 28,854
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 66 Post(s)
Quote:
Originally Posted by Floriante View Post
i measured it twice but didnt work as it should be i guess.

By the way, i used park tool carbon specific blade. do i still have to put the sealant? i already installed ritchey wcs bar plugs :S
Carbon specific blade? I didn't know they made one until you mentioned it. It seems to be just a good quality very fine tooth hacksaw blade and should have done a good, smoth job if you didn't force the saw. I've always used a high quality 32 tpi blade for cutting carbon steerers, etc. and never had a problem. FBinNY's suggestion to seal the cut ends is to assure there are no loose fibers or raw edges. I've never done it but it certainly can't hurt.
HillRider is offline   Reply With Quote
Old 06-14-12, 06:23 PM   #6
FBinNY 
Senior Member
 
Join Date: Apr 2009
Location: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
Posts: 29,688
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 232 Post(s)
Quote:
Originally Posted by HillRider View Post
Carbon specific blade? I didn't know they made one until you mentioned it. It seems to be just a good quality very fine tooth hacksaw blade and should have done a good, smoth job if you didn't force the saw. I've always used a high quality 32 tpi blade for cutting carbon steerers, etc. and never had a problem. FBinNY's suggestion to seal the cut ends is to assure there are no loose fibers or raw edges. I've never done it but it certainly can't hurt.
Park has done a decent job capitalizing on dealers being to lazy to go to the hardware store down the street. They've added their name (and a decent markup) to a bunch of generic tools.

Actually the reason I seal CF cuts is because there are always micro channels or gaps where the matrix doesn't perfectly seal against the fiber. That allows water to enter and attack the structure over time. It used to be more of a problem in the early days of CF, I don't know if the methodology has improved, so sealing the ends might be a case of belt and suspenders, but I still do it.
__________________
FB
Chain-L site

An ounce of diagnosis is worth a pound of cure.

“Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin

“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN

WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FBinNY is offline   Reply With Quote
Old 06-15-12, 03:14 PM   #7
joejeweler
Banned.
 
Join Date: Jun 2012
Bikes:
Posts: 360
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I don't know,.....looks like you're going to have to "balance" the weight somewhere to account for the now HEAVY long sided handlebar on a fine tuned machine!


Personally, just to avoid any good natured fun poking by your riding buddies, (and for your own satisfaction) i might just sand down the long end with 120 grit, stick on sandpaper on a flat backing (piece of wood) ....followed by BOTH ends getting 400 grit followed by 800 grit sandpaper. I might finish with a slight rounding of the sharp outer/inner edges with a piece of the finer grits stuck to my finger.

Will end up smoother than a baby's behind! You mentioned having the ends covered already,....so all this presupposes you can get them off safely.....


Last edited by joejeweler; 06-15-12 at 03:27 PM.
joejeweler is offline   Reply With Quote
Old 06-15-12, 03:27 PM   #8
himespau 
Senior Member
 
himespau's Avatar
 
Join Date: Jun 2008
Location: Louisville, KY
Bikes:
Posts: 9,477
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 51 Post(s)
Well given that for most people one leg is like an eighth to a quarter of an inch longer than the other anyway, if you were lucky and have the correct side of the bars longer, it'll all balance itself out nicely.
himespau is offline   Reply With Quote
Old 06-15-12, 04:26 PM   #9
JTGraphics
Senior Member
 
JTGraphics's Avatar
 
Join Date: Dec 2006
Location: So Cal
Bikes:
Posts: 2,673
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Personally no if it were mine I'd be mad at myself if I did that LOL
But you should be OK ride! unless it bugs you then fix it but I won't tell anyone whats under your grips
__________________
It may not be fancy but it gets me were I need to go.
http://www.jtgraphics.net/cyclist_bicycles.htm
JTGraphics is offline   Reply With Quote
Old 06-15-12, 06:33 PM   #10
3alarmer
Can'tre Member
 
3alarmer's Avatar
 
Join Date: Nov 2010
Location: The Big Tomato
Bikes: old ones
Posts: 13,910
Mentioned: 14 Post(s)
Tagged: 0 Thread(s)
Quoted: 660 Post(s)
3alarmer is offline   Reply With Quote
Old 06-16-12, 06:58 AM   #11
gmt13
Half way there
 
gmt13's Avatar
 
Join Date: May 2011
Location: Durham, NC
Bikes: 69 Hercules, 73 Raleigh Sports, 74 Raliegh Competition, 78 Nishiki Professional, 79 Nishiki International, 83 Colnago Super, 83 Viner Junior
Posts: 1,107
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
A few mm? You won't even notice that visually after a week or so of riding. Resist the urge to re-trim. One time I cut a bar 3 times and it was still too short.

-G
gmt13 is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 02:16 AM.