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Old 05-18-12, 07:40 AM   #1
bobotech
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Is there anywhere to get brake caliper drop bolts?

I just really like the double pivot brakes that I currently own, nice Shimano RX100 which look identical to 105 brakes. But I need a drop bolt so they will reach my 700c rims.

I can't find any and I really don't want to resort to home made klunky looking fixes.
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Old 05-18-12, 09:20 AM   #2
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Cheaper/easier to just buy standard reach calipers. Modern ones are available from Shimano, Tektro, and others.
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Old 05-18-12, 09:30 AM   #3
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Got Bucks? http://harmonywaterrestoration.com/drop%20bolt_pg.html
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Old 05-18-12, 09:38 AM   #4
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If you are able to find a drop-bolt that works for your caliper, go for it! However, those were only popular with the old-style single-pivot calipers. I've found making these brackets work really well for modern dual-pivot brakes. Thanks Sheldon!


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Old 05-18-12, 09:44 AM   #5
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NB: those are for single pivot calipers, the groove is to carry the return spring.
a replica of the older part, when Campag single pivots were tops.

as OP was asking to retain their dual pivot brake , that piece[in#3]
does not help.

So, shopping for a longer reach caliper, in reality, will be tidier ..

Last edited by fietsbob; 05-18-12 at 09:48 AM.
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Old 05-18-12, 10:42 AM   #6
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Quote:
Originally Posted by dsbrantjr View Post
Quote:
Originally Posted by fietsbob View Post
NB: those are for single pivot calipers, the groove is to carry the return spring.
a replica of the older part, when Campag single pivots were tops.

as OP was asking to retain their dual pivot brake , that piece[in#3]
does not help.

So, shopping for a longer reach caliper, in reality, will be tidier ..
Wow, those drop bolts are beautiful but damn, 150 dollars for a pair? Really nice machining.

Now what makes those usable with only single pivot? I'm just wondering.

I'm going to be shopping for longer reach brakes now.
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Old 05-18-12, 10:59 AM   #7
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wow, shoulda stocked up on drop bolts back when you could get them for $10. Although they wouldn't work for a dual pivot brake
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Old 05-18-12, 11:34 AM   #8
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Ahh, I figured it out. Dual pivot brakes have the bolts going the other way because of the pivots. Obvious when you look at one up close.
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Old 05-19-12, 08:58 AM   #9
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Single pivot brakes..Symmetrical return spring goes thru that slot
to a stop on each brake arm, where it opens up the brakes.
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Old 05-19-12, 01:23 PM   #10
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I had the same issue and came up with this. There are no guarantees that it will work, especially on the front. I used it on the back brake for a while and it worked fine. It's made from a cable ferrule.
Attached Images
File Type: jpg new2.jpg (33.0 KB, 185 views)

Last edited by onespeedbiker; 05-19-12 at 01:32 PM.
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Old 05-20-12, 09:28 AM   #11
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Sorry, but looking at those homebrewed "solutions", I look at them and ask myself "Would I trust my life to that approach?"

In all of those cases except for an actual purpose-made drop bolt, the answer is "no".

Just buy new calipers and be done. Saving a few bucks won't matter when you're dead because you grabbed a handful of brake in an emergency and they failed. Even filing the bottom of the pad slot would be safer than any of those approaches.
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