BTP Shifter Clamps

Discuss light weight issues concerning road bikes & parts.
b3nault
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Joined: Sun May 25, 2008 3:58 pm
Location: scottsdale, az
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by b3nault

Would like to see some pictures of these clamps "in action" on the bike.

Post them up please! :D

by Weenie


Leloby
Posts: 1318
Joined: Tue Mar 11, 2008 2:55 pm
Location: UK

by Leloby

Me too. Are they as crap as their front mech clamps?

mdeth1313
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Joined: Sat Apr 22, 2006 12:38 am
Location: Dutchess County, NY

by mdeth1313

I've had mine on for 1000-2000 miles now w/ no problems. I'd take a picture, but I'm not unraveling my handlebar tape. BTW this is w/ sram red shifters.

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Danton
Posts: 2327
Joined: Thu Mar 23, 2006 2:52 pm
Location: Aix-les-Bains

by Danton

No pictures as they are hidden.

I've had a useless BTP seatpost clamps. It broke at 50% of recommended torque, I posted it back and customer service was zero. So careful.

But the clamps are still working fine.

butted spoke
Posts: 354
Joined: Thu Jul 28, 2005 8:15 pm
Location: Wales, UK

by butted spoke

2 years, 7000 km, no trouble. Shaved 22g off my DA9 STI.

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Taz
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Joined: Thu Sep 15, 2005 10:19 am
Location: Greece

by Taz

I would never buy them.
The results of a failure would be catastrophic (unlike a FD clamp).
I know neither me nor the clock can tell a 22gr difference so I decide to play it safe with certain parts on the bike e.g. brakes

mdeth1313
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Location: Dutchess County, NY

by mdeth1313

Danton wrote:No pictures as they are hidden.

I've had a useless BTP seatpost clamps. It broke at 50% of recommended torque, I posted it back and customer service was zero. So careful.

But the clamps are still working fine.


I have a btp seatpost clamp as well- good thing I got it for next to nothing. The bolt broke (using a torque wrench) which was easliy replaceable, but the clamp does not hold well (even w/ tacx paste).

I can say the shifter clamps are working quite well (saved 20g on the weight of my red shifters) and I have one of their 13g bottle cages which has been in use over 2 years now w/ zero issues.

I had the front der. clamp on my old frame (new one is a braze on) and it worked, but was difficult to get set up.

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Juanmoretime
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Location: Urbana, Illinois

by Juanmoretime

Like everyone else said, they are under my bar tape. I've been on mine for over three years and about 20,000 miles and still going strong.
RESIDENT GRUMPY OLD MAN.


SPIRITS
Posts: 254
Joined: Mon Apr 28, 2008 2:04 pm
Location: Germany

by SPIRITS

My digi scale said 421g with my Da 7800 shifters.

With BTP installed, it's 397g - 24g saved, no issues whatsoever.

mdeth1313
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Posts: 2094
Joined: Sat Apr 22, 2006 12:38 am
Location: Dutchess County, NY

by mdeth1313

Taz wrote:I would never buy them.
The results of a failure would be catastrophic (unlike a FD clamp).
I know neither me nor the clock can tell a 22gr difference so I decide to play it safe with certain parts on the bike e.g. brakes


I guess we all have our risk tolerance.

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Gold Knight
Posts: 553
Joined: Mon Nov 07, 2005 4:27 pm
Location: Santa Barbara, CA

by Gold Knight

no problems w/mine and actually thinking of drilling them out!

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coloclimber
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Location: People's Republic of Boulder

by coloclimber

I had no problems for 2 years until my bike fell over recently and one of the clamps cracked. Now I only have one BTP clamp on. It s pretty cheap way to save weight and even if it cracks, you can still hold the lever to shift and brake -so I wouldnt really consider it dangerous.
-Deacon Doctor Colorado Slim

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XL_Carbon
Posts: 560
Joined: Fri Jan 06, 2006 8:16 pm
Location: Glendale, Ca USA

by XL_Carbon

b3nault wrote:Would like to see some pictures of these clamps "in action" on the bike.

Post them up please! :D


Ask and you shall receive... I have BTP carbon clamps installed on 3 bikes but I could only find one good picture of one bike.

1) Bianchi XL Carbon (pictured) with FSA Plasma stem/bar combo - no bar tape/exposed clamps, ~15000+ miles. I did break one clamp when I hit a pot hole at the ~4000 mile mark. Approx speed - 30 mph. Cracked the band part of clamp half way, shifter was still very much attached. Replaced with a new carbon clamp.

2) Specialized Tarmac with Zipp SLC2 bar - no bar tape/exposed clamps, about ~2800+ miles. No problems. Have had 2 crashes. In both, shifters sustained some impact with no adverse affect to clamps.

3) Cervelo SLC-SL with Zipp SL - taped bar, about ~250 miles. No problems.

So far in all 3 applications, very good service from clamps.

Advice: When on the hoods, make sure you ease up on the shifters (not applying much weight) while going over pot holes. In my mishap, no one called out the pot hole and some of my weight was leaned into the hoods. In this instance, carbon clamps can crack. Luckily only one cracked.
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Close up stembar.jpg

by Weenie


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XL_Carbon
Posts: 560
Joined: Fri Jan 06, 2006 8:16 pm
Location: Glendale, Ca USA

by XL_Carbon

Gold Knight wrote:no problems w/mine and actually thinking of drilling them out!


I totally over looked this post.

GK. Don't drill out the clamps unless you're willing to accept catastrophic failure. (Which, of course, I know you don't. Anyway, I think you said this in jest.)

But if any of you are remotely thinking about doing this, bad idea. :!:

Each clamp is as light as they're designed to be, no less. Doing so will surely make them even more susceptible to cranking.

But if you're crazy enough, don't let me stop you. :wink:

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