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Old 06-10-09, 03:49 AM   #1
aeiadart
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Disk Brake Fitment question

Hey guys and girls.

I recently picked up an 08 Redline Moncog SS and i am falling in love with it. I am kind of a safety nut and think that upgrading to a set of front and rear disk brakes would be a good first upgrade for the bike. My first question would be, How can i go about determining what set of Disk breaks will fit onto my bike. The upgraded version of my bike, the Monocog flight comes stock with AVID BB5 Disc Brakes. Because this is the same frame, does this mean i can just buy any set of bb5s and have my LBS install them, or are there precise measurements that enable or restrict the ability to fit a Disk brake set up. If any body can point me in the right direction on determining how to fit my bike with a pair of disk brakes id appreciate it. I would like to get them online and have my LBS install them.

I dont know if this will help or not but here are the specs for my bike.

Description:FEATURES: FRAME: Redline 29er, Chromoly MTB Frame, W/Disc Tabs, And Chain Tensioner
FORK: Redline, Chromoly, W/Disc Tabs
BRAKES: Tektro Alloy V-brake.
WHEELSET: Alex Alloy Dh-19 29" Rims, Redline Alloy Hubs.
CRANKSET: RPM Alloy Forged Crank
COLOR: Matte Green.


Thanks.

Last edited by aeiadart; 06-10-09 at 03:59 AM.
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Old 06-10-09, 04:10 AM   #2
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There are only two different types of mounting systems for disc brake calipers, IS mount, and post mount. IS mount are more common, and considering your bike could come with BB5's, it would be an IS mount.

I'm assuming you want to stick with cable brakes? BB7's will be your best bet.
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Old 06-10-09, 04:22 AM   #3
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thanks for the response.

would these work then?
what is the difference between 160mm and 185mm ect...?

thanks again.

http://cgi.ebay.com/09-AVID-BB7-Mech...lenotsupported
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Old 06-10-09, 04:29 AM   #4
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Bigger disk rotors are for more powerful braking and faster heat dissipation. They're really only necessary for all-mountain, freeride, or DH bikes IMO.
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Old 06-10-09, 06:14 AM   #5
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Originally Posted by aeiadart View Post
thanks for the response.
would these work then?
what is the difference between 160mm and 185mm ect...?
thanks again.
Yes, those will work fine.

As mentioned, 160mm, 185mm etc are rotor sizes. I run BB7's with a 185mm front rotor, and a 160mm rear rotor. They provide more than enough stopping power, with great modulation, and are easy as pie to install and set up.

Here's my setup...obviously the last pic is newer than the others; Last pic is from a few days ago when I got new tyres and headset, other photos are from when the BB7's were new.







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Old 06-10-09, 07:56 AM   #6
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BB7 are a fave because they are cheapish and easy to deal with and effective at what they do.

But, disc brakes really have nothing to do with safety in most conditions. They do not stop you any faster than properly set up v-brakes in most conditions.

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Old 06-10-09, 04:18 PM   #7
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BB7 are a fave because they are cheapish and easy to deal with and effective at what they do.
But, disc brakes really have nothing to do with safety in most conditions. They do not stop you any faster than properly set up v-brakes in most conditions.

jim
Eh, debatable. When riding in the wet, water on the pads and rims can effect the performance of v-brakes, but have minimal to no effect on disc brakes. That factor is ruling out traction and contact with the ground though.

Since riding a bike with discs, I have always preferred them over v-brakes. I just find it much smoother, better modulation, and easier to maintain.
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