Disc Brakes
These are brake pads on two sides of a steel disc attached to the wheel.
Disc
Can attach with a centerlock (ridges w/ locknut) or 6+ bolt on
Andrew G from bikery uses dt swiss centerlock -> 6 bolt adapter
- this allows him to have both, because the centerlock needs a special tool to remove, it is better to use 6 bolt
My Canyon
Caliper
Shimano 105, BR-RS505
Brake Pads
DISC BRAKE PAD BP-L04C-MF METAL WITH FIN
- Sintered metal (powdered metal compacted & heated)
- Works better in wet conditions
- Squeals in wet
- Better heat transfer than resin
- retains more constant friction until 400-500C
Worn back pads 26-01-16
- L02A shimano resin SQD04
- Released 2017, superseded by L03A (+40% longevity) & L05A (+50% longevity)
- QBP, L05A, $15 https://www.qbp.com/qbponlinestorefront/p/BR2721
- Resin
- Better in dry conditions
- Wears faster than sintered metal
Alternative compatible brands
Jagwire, Taiwan
- Company started in 1950 for brake pad development
- Disc 34 indicates the pad is designed for modern Shimano flat-mount road/gravel calipers,
- Dura-Ace (BR-R9170)
- Ultegra (BR-R8070)
- 105 (BR-R7070)
- GRX
- RS505/RS405/RS305.
- It is the equivalent of the Shimano "L-Type" or "K-Type" pad (e.g., L03A, L05A, K03S, K05S)
Cooling fins
cooling fins blog article, why they don't work
There is not much research on performance of fins on brake pads. It is really just a marketing/aesthetic gimmic. One study shows 8% of heat reduction through breakpad geometry, where 92% released through caliper. ResearchGate
Break pads
Reddit thread on disc brake pad guides
