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[Closed] Quick question on road brakes, as I'm a bit confused......

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[#1552251]

....here goes - Whats the difference between a front and rear caliper on a road bike? I have the opportunity to get a bargain Ultegra brake but I can only get [b]rear[/b] brakes - will one fit on the front of my bike too? I have carbon forks on my Specialized Secteur (2010).

Cheers everyone!


 
Posted : 28/04/2010 9:06 am
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Longer bolt that goes through bridge ?


 
Posted : 28/04/2010 9:07 am
 JoB
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the rear has a [i]shorter[/i] mounting bolt, and some rear brakes are made mechanically less powerful than the front to prevent skidding


 
Posted : 28/04/2010 9:12 am
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"to prevent skidding"

they take all the fun out of life...


 
Posted : 28/04/2010 9:13 am
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the rear has a shorter mounting bolt,

Could I buy a new bolt to put it on the front?

and some rear brakes are made mechanically less powerful than the front to prevent skidding

That seems like a spectacularly dumb idea, but I can see it happening...


 
Posted : 28/04/2010 9:14 am
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That seems like a spectacularly dumb idea, but I can see it happening...

No campag always did it (well since dual pivot brakes were invented), shimano brought it in on the current* DA.

Single pivot brakes weigh less (1 combined pivot & bolt Vs 2 and a lot more aluminium), so why not shed 50g from the calliper?

It's a bit like mountianbikes, very few people run the same rotors front and back, XC racers run 160/140, trail bikes 180/160, dh bikes 200/180.

*pun intended


 
Posted : 28/04/2010 9:20 am
 JoB
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"[i]Could I buy a new bolt to put it on the front?[/i]"

i'm sure you could, but knowing how much Mr Shimano doesn't like people taking his components apart too much.....

"[i]That seems like a spectacularly dumb idea, but I can see it happening... [/i]"

maybe i should rephrase it by saying some people found the new dual-pivot rear brakes too powerful so they made them less efficient again


 
Posted : 28/04/2010 9:23 am
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I run 200mm on the back of my rig for max skiddage.


 
Posted : 28/04/2010 9:29 am
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The allen key fitting type nut (that fits into the counterbore hole in the back of the forks) that screws onto the stud/mounting bolt, can be bought separately in different lengths. Some companies (Sram) supply 3 or 4 lengths of nut with their brakes. Your LBS should have a selection.


 
Posted : 28/04/2010 9:33 am
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I run 200mm on the back of my rig for max skiddage.

U R awsum wikkid, nuf respek.


 
Posted : 28/04/2010 9:36 am