single pivot brake action
10-23-12 | 02:43 PM
#1
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Joined: Apr 2010
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From: New York City
single pivot brake action
I bought some shimano 600 6400 series brakes and I noticed when I apply the front brake the brakes flex forward a little as they grab the wheel.Is this normal?Fixable?Or a sign the brake is shot?
10-23-12 | 03:04 PM
#2
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Joined: Apr 2009
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From: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
There's play and there's flex. Play can be adjusted out via the front cone and locknut. Try to get it to as close to zero as possible while still allowing free movement of the arms. (remove rubber plug to access hex hey head). BTW if this is the internal spring version made for them by Dia Compe (no spring behind the arms) Do not take it apart, It's very difficult to reassemble afterward.
Some flex in the arms themselves is normal for any caliper brake, and the longer the reach, the more you'll have.
Some flex in the arms themselves is normal for any caliper brake, and the longer the reach, the more you'll have.
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FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
10-23-12 | 05:13 PM
#3
Thread Starter
Senior Member
Joined: Apr 2010
Posts: 817
Likes: 7
From: New York City
There's play and there's flex. Play can be adjusted out via the front cone and locknut. Try to get it to as close to zero as possible while still allowing free movement of the arms. (remove rubber plug to access hex hey head). BTW if this is the internal spring version made for them by Dia Compe (no spring behind the arms) Do not take it apart, It's very difficult to reassemble afterward.
Some flex in the arms themselves is normal for any caliper brake, and the longer the reach, the more you'll have.
Some flex in the arms themselves is normal for any caliper brake, and the longer the reach, the more you'll have.
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