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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 12-06-05, 09:33 PM   #1
Sneaky Pete
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Is it dangerous to drill holes in handlebars?

Yo,

My LBS drilled a hole in my heat treated aluminum Nitto bullhorns in order to run the front brake cable through. I asked them about it and they assured me that there was no problem with doing this. However, I am paranoid about the bar snapping off where the hole was drilled and biffing in front a huge truck while traveling at a high rate of speed. Whadday'all think?
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Old 12-06-05, 09:36 PM   #2
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put down the pipe
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Old 12-06-05, 09:41 PM   #3
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i wouldn't worry about it. unless it's big enough to fit a rhinoceros through.

i could also be dead wrong, but that's what i think.
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Old 12-06-05, 09:44 PM   #4
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Im curious - where did they put the hole?
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Old 12-06-05, 09:47 PM   #5
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the hole was drilled about an inch away from the stem on the bottom side of the bar....
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Old 12-06-05, 09:51 PM   #6
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Quote:
Originally Posted by sers
put down the pipe
hey sers.... sukkabaggadix
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Old 12-06-05, 09:52 PM   #7
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Quote:
Originally Posted by Sneaky Pete
the hole was drilled about an inch away from the stem on the bottom side of the bar....
should be fine then, unless you're some kind of huge monster it shouldn't be a problem
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Old 12-06-05, 09:55 PM   #8
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/\ right, i'm too damn skinny, so i didn't even take that into account.
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Old 12-06-05, 10:10 PM   #9
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No worries. You're never gonna snap those handlebars. I promise.
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Old 12-06-05, 11:36 PM   #10
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Quote:
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hey sers.... sukkabaggadix
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Old 12-06-05, 11:38 PM   #11
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LOTS of handlebars have holes in them for cable routing. Personally I would choose a handlebar that already had all the holes I thought I needed for what I wanted to do with them. Did they ask first?
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Old 12-07-05, 12:10 AM   #12
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sounds safe to me, i'd check the condition few times a year for cracks/distress.
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Old 12-07-05, 12:13 AM   #13
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hey sers.... sukkabaggadix
http://www.eatabagofdicks.com
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Old 12-07-05, 04:02 AM   #14
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put your handle bars in a vice and try to bend them. Seriously
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Old 12-07-05, 04:20 AM   #15
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Not to scare you, but close to the stem and on the underside is the place I personally would last drill a bar... It's subject to up-down forces, so drilling the front would probably be safer. Also, I sort of think there's a leverage thing going on, so a bit further would have been batter. I guess they know better than me.

If you're paranoid, ask Nitto about it (do they have English email customer service?) If they say it seriously weakens the bar, voids warranty etc, you can take a copy of the email and ask the shop to replace the bar with an intact one, I guess.
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Old 12-07-05, 05:14 AM   #16
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Was there a problem with taping the housing along the bar? What kind of brake lever required trepaning?

An inch away from the stem is just weird. Predrilled bars are drilled there at all.
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Old 12-07-05, 08:50 AM   #17
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Look at all the holes in the handlebar that Merckx used for the hour record...

http://www.classicrendezvous.com/Ben...erckx_main.htm
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Old 12-07-05, 09:01 AM   #18
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Quote:
Originally Posted by 4nick8tor
Look at all the holes in the handlebar that Merckx used for the hour record...

http://www.classicrendezvous.com/Ben...erckx_main.htm
But he used those handlebars for about one hour and no longer. And he didn't climb any hills and probably didn't rocked the bike.

I wouldn't trust a handlebar with a hole close to the stem, especially not if it didn't come predrilled. That hole is a stress concentrator and since they probably just used a power drill, I guess the hole isn't even really smooth, with makes for some nice crack starts...

Then again, that's just my opinion.
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Old 12-07-05, 09:07 AM   #19
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One hour of Merckx under full power is about a year of street riding of anyone on this forum.
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Old 12-07-05, 09:21 AM   #20
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It's common practice. Don't worry about it.
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Old 12-07-05, 09:47 AM   #21
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i can imagine that you'd only have problems if the hole is more than 1/2 or so the diameter of the bar. there will still be enough metal, if the hole is only small enough for cabling, to keep it from bending/breaking unless you are herculean.
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Old 12-07-05, 09:51 AM   #22
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i'd be ****ing pissed the hell off if someone drilled a goddamn hole in my bars without asking me first.
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Old 12-07-05, 09:53 AM   #23
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Quote:
Originally Posted by 4nick8tor
Look at all the holes in the handlebar that Merckx used for the hour record...

http://www.classicrendezvous.com/Ben...erckx_main.htm
there are serious questions about whether he used those bars at all...
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Old 12-07-05, 10:09 AM   #24
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There are also serious questions about whether Lee Harvey Oswald acted alone.
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Old 12-07-05, 10:14 AM   #25
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A round hole should not be a stress concentrator and should be alright. It might be wise to perodicaly look for cracks, but isn't that always true?

Joe
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