Difference between rs505 and rs805 calipers?

Discuss light weight issues concerning road bikes & parts.
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Ticlimax
Posts: 90
Joined: Thu Aug 04, 2016 2:44 pm

by Ticlimax

Is there, apart from the price, any difference between these two?
I was looking at buying the rs805 calipers, but they weigh the same, use the same hoses etc.

by Weenie


Ticlimax
Posts: 90
Joined: Thu Aug 04, 2016 2:44 pm

by Ticlimax

I am now even looking at rs405 brakes, as apart from the color, I can't find any differences either... Though I probably won't risk it because according to Shimano they aren't compatible with r785 shifters. (while according to shops, they are)

ooo
Posts: 538
Joined: Sat May 21, 2016 12:59 pm

by ooo

Pic links - BR-RS505 and BR-RS805 looks similar, I can't find differences. BR-RS405 looks similar, but it have different specs (non-ceramic piston)
Servo-wave levers ST-R785, ST-R685, ST-RS505 are compatible with BR-RS505, BR-RS805, BR-R785, BR-RS785, BR-R9170, BR-R8070
BR-RS405 officially compatible with non-servo-wave levers ST-RS405 - less strong caliper materials? (Servo output power - see last pic)
BR-RS405 uses same geometry as BR-RS505 (and BR-RS805), looks like the only difference is in body materials and pistons:
http://si.shimano.com/pdfs/ev/EV-BR-RS405-4020.pdf
http://si.shimano.com/pdfs/ev/EV-BR-RS805-3852A.pdf
Attachments
hydro-road-shimano.png
Shimano STI vs Disc Brake road calipers compatibility
rs405.gif
BR-RS505 vs BR-RS405
rs805.jpg
BR-RS505 vs BR-RS805
servo-wave.png
Shimano Servo Wave
'

Ticlimax
Posts: 90
Joined: Thu Aug 04, 2016 2:44 pm

by Ticlimax

This exactly the information I needed, thanks!

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