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Old 09-03-10, 11:25 AM   #1
sram
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Converting mech disks to hydros, and rotor sizes

Hi, I've got mech discs from and rear on my bike and thinking of upgrading them to hydraulic. What would I need (i.e levers, caliper, hose, fluid etc). What do you think of just converting the front for a while, and I think my shifter is attached to my lever, would I need a new one? And what about cost, should I try to get second hand parts? Also, what do I need to increase the size of the rotor (apart from the actual rotor, it's at 160mm, and I'm thinking of changing to 180mm as it's badly bent), do I just need a mount? Thanks, sram
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Old 09-03-10, 01:49 PM   #2
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If you've got brifters you will need a new lever and a new shifter. Luckily most hydraulic brakes are sold as lever + caliper + hose already cut, assembled and bled. You might need another mount/adapter to go with your bigger rotor.
2nd hand parts are always a bit of a gamble, if it's your first experience with hydraulics you might want to stick with new stuff as to avoid any issues with parts that aren't quite OK.
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Old 09-05-10, 03:00 AM   #3
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If you've got brifters you will need a new lever and a new shifter. Luckily most hydraulic brakes are sold as lever + caliper + hose already cut, assembled and bled. You might need another mount/adapter to go with your bigger rotor.
2nd hand parts are always a bit of a gamble, if it's your first experience with hydraulics you might want to stick with new stuff as to avoid any issues with parts that aren't quite OK.
Thanks a lot!
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Old 09-05-10, 04:23 AM   #4
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Uh, how do I tell if I need post or IS mounts? It's an older fox 36.
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Old 09-05-10, 05:03 AM   #5
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Uh, how do I tell if I need post or IS mounts? It's an older fox 36.
Post mount:


IS mount:
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Old 09-05-10, 07:20 AM   #6
sram
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IS it is, then. Thanks for all the help.
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Old 09-05-10, 07:24 AM   #7
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I note that those with IS mounts can use both types of caliper; the second pic shows a post-mount caliper mounted on a bracket.
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Old 09-05-10, 08:41 AM   #8
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Just a thought, Shimano and Magura use a light mineral oil for the fluid ,
all the others use a fluid that deteriorates the paint, if left in contact,
so wipe off drips Immediately.
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