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#1
August 22nd 06, 02:54 AM
posted to rec.bicycles.tech
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Difference between R600 and A550 LR Brakes?
What is actual difference between Shimano R600 ("Ultegra" grade) and Shimano
A-550 ("Tiagra/105" grade) long reach calipers? I can see the pads are different, but does anybody know of differences in metallurgy or design of bearings or bushings? mC 
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#2
August 22nd 06, 02:01 PM
posted to rec.bicycles.tech
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Difference between R600 and A550 LR Brakes?
MykalCrooks wrote: What is actual difference between Shimano R600 ("Ultegra" grade) and Shimano A-550 ("Tiagra/105" grade) long reach calipers? I can see the pads are different, but does anybody know of differences in metallurgy or design of bearings or bushings? mC pads and barrell adjusters...innards are the same-no bearings all bushing.
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#3
August 22nd 06, 02:48 PM
posted to rec.bicycles.tech
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Difference between R600 and A550 LR Brakes?
Qui si parla Campagnolo wrote:
pads and barrell adjusters...innards are the same-no bearings all bushing. The R600 has one ball bearing. -- MfG/Best regards helmut springer
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#4
August 22nd 06, 05:08 PM
posted to rec.bicycles.tech
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Difference between R600 and A550 LR Brakes?
Helmut Springer wrote:
The R600 has one ball bearing. That the Armstrong model? (Sorry.)
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#5
August 22nd 06, 05:10 PM
posted to rec.bicycles.tech
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Difference between R600 and A550 LR Brakes?
"Helmut Springer" wrote in message ... Qui si parla Campagnolo wrote: pads and barrell adjusters...innards are the same-no bearings all bushing. The R600 has one ball bearing. -- MfG/Best regards helmut springer Did find a ball bearing -- a bushing embedded with 12 tiny balls -- in the center pivot for the R600. Wondered if the less expensive brake has a similar bushing/bearing. The action of the R600 feels very smooth compared to plain-busing Tektro LR brake I have. Found exploded diagram of current 105 calipers and they appear to have this same kind of bearing that is found in current Ultegra. But can't tell from available information if the A550 Tiagra grade brake has same bearing system as the R600 -mC
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#6
August 22nd 06, 05:54 PM
posted to rec.bicycles.tech
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Difference between R600 and A550 LR Brakes?
MykalCrooks wrote:
But can't tell from available information if the A550 Tiagra grade brake has same bearing system as the R600 I have RX100 short reach brakes here, that is BR-A550, and they use only bushings. Still smooth. -- MfG/Best regards helmut springer
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#7
August 22nd 06, 05:55 PM
posted to rec.bicycles.tech
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Difference between R600 and A550 LR Brakes?
Bill Sornson wrote:
Helmut Springer wrote: The R600 has one ball bearing. That the Armstrong model? Nope, it's not doped. (Sorry.) Dito. -- MfG/Best regards helmut springer
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