Bicycle Mechanics - Dura Ace 7900 Brake Caliper - Rear Pivot Bolt too small?

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JC 911
07-04-09, 07:13 PM
I am installing the rear 7900 brake calipers on my 2006 Lemond Tete de Course and I think the rear pivot bolt used to install the caliper onto the frame is too short. The front caliper went in perfectly but the rear one is not. According to Shimano's website, the rear caliper's bolt is 1.5" but there is no way that is going to be long enough. It is #4 in the attached diagram link.

http://techdocs.shimano.com/media/techdocs/content/cycle/EV/bikecomponents/BR/EV-BR-7900-2868_v1_m56577569830651588.pdf

Am I doing something wrong? Are there different lengths available and I need to order a longer pivot bolt?

operator
07-04-09, 08:07 PM
Look at the techdoc you linked. There are various recessed bolt lengths. It's not unusual for this to be true.
Ex Pres
07-04-09, 08:22 PM
Actually there is only one BOLT length listed for the rear caliper in the techdoc, but have you tried a longer nut? Your LBS should have many options in the parts box.

JC 911
07-04-09, 09:31 PM
Thanks for the advice - I'll stop by my LBS tomorrow and ask to see if I can get a longer bolt.
operator
07-04-09, 09:34 PM
Actually there is only one BOLT length listed for the rear caliper in the techdoc, but have you tried a longer nut? Your LBS should have many options in the parts box.

The only way thats true is if you're blind, sorry
Ex Pres
07-04-09, 10:00 PM
The only way thats true is if you're blind, sorry

No, the only way it's not true is if you don't know the difference between a nut and a bolt. The bolt is the male part, the nut is the female - but I'm sure you know nothing about that mix of human anatomy either.

And JC911, ask for a longer NUT
operator
07-05-09, 06:09 AM
No, the only way it's not true is if you don't know the difference between a nut and a bolt. The bolt is the male part, the nut is the female - but I'm sure you know nothing about that mix of human anatomy either.

And JC911, ask for a longer NUT

Brain fart on terminology. It's scary that I actually made a mistake. Well **** me.
HillRider
07-05-09, 07:09 AM
Brain fart on terminology. It's scary that I actually made a mistake. Well **** me.


That was totally and completely uncalled for. You made the error. Accept the correction with good grace.
operator
07-05-09, 07:28 AM
That was totally and completely uncalled for. You made the error. Accept the correction with good grace.

Ok - corrected
CCrew
07-05-09, 07:28 AM
That was totally and completely uncalled for. You made the error. Accept the correction with good grace.

Agreed...
Wordbiker
07-05-09, 07:43 AM
operator...you should take the bag off before posting...just sayin.
operator
07-05-09, 07:46 AM
operator...you should take the bag off before posting...just sayin.

Well now that hillrider has quoted it, the edit change doesn't propagate. GG vbulletin. ****ing