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19 votes
2 answers
4k views

Why are disk brakes not completely round on the outside?

Why are disk brakes not 100% round? Why is the outside edge "rough"? Here's a pic of what I'm describing:
user29388's user avatar
  • 191
1 vote
2 answers
1k views

Upgrade to disc brakes

I just got an older bike - a Schwinn Paramount Series 7 PGD OS bike. It has 26" wheels. What is required to convert to disc brakes? Any suggestions on which kit is best to get? Are there any ...
Jbog's user avatar
  • 11
6 votes
1 answer
3k views

Mixed pair of sintered and organic brake pads for disk brakes

I am researching for a new road bike for myself, trying to identify the must-haves from the nice-to-have features. Disk/Disc brakes are on the must-have list, but the descriptions of brake pads are ...
Criggie's user avatar
  • 128k
97 votes
16 answers
30k views

Why are disc brakes rare on road bikes? (circa 2010) [closed]

Window shopping for road bikes, I can't see many that have disc brakes. What are the reasons for this?
user155695's user avatar
  • 2,913