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source for vintage 26mm brake lever clamps?

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source for vintage 26mm brake lever clamps?

Old 05-15-15, 02:21 AM
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nishiki _fan
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source for vintage 26mm brake lever clamps?

Hi bikeforums.net family!

I acquired Dia-Compe regular vented brake levers (brake lever clamp 23.5mm).

I also sourced a nice vintage drop bar, but the clamp measurement is 26mm.

Has anyone ever widened 23.5mm dia-compe style brake lever clamps to fit a 26mm bar? I see there's a little kink in the clamp that could be widened a bit, but I don't know if that's safe haha.

If the above context is not recommended, does anyone know a source that sells 26mm dia-compe style brake lever clamps? I'm not having any luck on Ebay .

Thanks in advance!

peace
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Old 05-15-15, 02:33 AM
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While 26.0 mm is a common enough stem clamp diameter, I've never seen it as a brake clamp diameter.
Is it possible that you've gotten hold of a track bar that has the same diameter all through?
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Old 05-15-15, 03:58 AM
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Originally Posted by dabac View Post
While 26.0 mm is a common enough stem clamp diameter, I've never seen it as a brake clamp diameter.
Is it possible that you've gotten hold of a track bar that has the same diameter all through?
Well, the Nitto triathlon deep drop bar that I've acquired is 26mm on stem (as told by seller), so I'm assuming it's 26mm the whole length of the bar. Am I incorrect? If so, apologies, as I am new to this!

I've seen for sale on Ebay a pair of sunland (?) brake levers with 26mm brake lever clamps, but I want to use the vintage drilled dia-compe brake levers I have! Less wind resistance haha.

The bar I have is pictured below:

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Old 05-15-15, 04:13 AM
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Youre worrying over nothing. Look at the pic, the bar IS thicker at the clamp, and maybe 5 cm out to either side. Regular brake levers are very likely to fit just fine.
But I'm a bit concerned about the bottom part of the bars. On those examples I've seen the inward facing ends have been aligned axially.
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Old 05-15-15, 04:36 AM
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Originally Posted by dabac View Post
Youre worrying over nothing. Look at the pic, the bar IS thicker at the clamp, and maybe 5 cm out to either side. Regular brake levers are very likely to fit just fine.
But I'm a bit concerned about the bottom part of the bars. On those examples I've seen the inward facing ends have been aligned axially.
Thanks for the input! Yeah, I tend to get worked up over nothing. Hey, better safe then sorry right? haha

As for the bars, you must be talking about the Scott TTT deep drop bars, in which the bottom part is flat.

On the Nitto version, however, they're curved at the bottom, supposedly for better wrist placement.

There is a heat-treated version of these Nitto's on Ebay; picture is below:



They have indentations at the tops, probably to reduce flex under load. If I wasn't planning to wrap the bars all the way around, I would be all over this! They look very interesting!

peace
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Old 05-15-15, 05:16 AM
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Those grooves are actually for the brake cable housing to settle in to.
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Old 05-15-15, 05:28 AM
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To get those Dia Compe levers around the lower bends on that bar, you'll need to detach the clamp bands completely. They attach/tighten with a draw-bolt arrangement, so the clamp bands are actually bigger than 23.8 and should go on much easier that way. You may also want to replace the original plated screws with stainless steel while you have the levers apart.
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Old 05-15-15, 07:53 AM
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As a general rule for road bars, the stem clamp diameter can be specified as 25.4 mm, 25.8 mm, 26.0 mm, 31.7 mm, 31.8 mm or even 35.0 mm and they all take 23.8 mm brake lever or brifter clamps. The larger diameter is only in the center few inches.
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Old 05-15-15, 10:40 PM
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Originally Posted by LesterOfPuppets View Post
Those grooves are actually for the brake cable housing to settle in to.
Originally Posted by Cross Creek View Post
To get those Dia Compe levers around the lower bends on that bar, you'll need to detach the clamp bands completely. They attach/tighten with a draw-bolt arrangement, so the clamp bands are actually bigger than 23.8 and should go on much easier that way. You may also want to replace the original plated screws with stainless steel while you have the levers apart.
Originally Posted by HillRider View Post
As a general rule for road bars, the stem clamp diameter can be specified as 25.4 mm, 25.8 mm, 26.0 mm, 31.7 mm, 31.8 mm or even 35.0 mm and they all take 23.8 mm brake lever or brifter clamps. The larger diameter is only in the center few inches.
Thanks everyone for the informative replies!

peace
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Old 05-15-15, 10:56 PM
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Originally Posted by HillRider View Post
As a general rule for road bars, the stem clamp diameter can be specified as 25.4 mm, 25.8 mm, 26.0 mm, 31.7 mm, 31.8 mm or even 35.0 mm and they all take 23.8 mm brake lever or brifter clamps. The larger diameter is only in the center few inches.
Don't forget 26.4!
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