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Author Topic: disc brakes  (Read 1995 times)

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Offline stumpy

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disc brakes
« on: April 11, 2009, 09:00:52 AM »
Helping my buddy replace his v brakes with disc. he has the mounts, but I've never bought replacements before. How do I know what size (160mm, 185mm, 203mm) his bike will need?
 
Also, any recommendations on good mechanical disc and levers would be greatly appreciated!

Offline $irWattZZZZ

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Re: disc brakes
« Reply #1 on: April 11, 2009, 10:03:46 AM »
There are variables such as rider weight, terrain, etc:
for instance on my ubber lite XC bike I have a 160 front and 140 rear, on the the trail bike I have 160 front and rear. 160 rear should be good for just about all local applications and either 160 or 180/5 front should cover you. If you are doing long decents (mountains) or are currently in the weight sheding mode you may consider the next size larger rotor :)

Offline Triple T

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Re: disc brakes
« Reply #2 on: April 11, 2009, 10:13:51 AM »
I agree with Scott.  160 front and rear should cover everything around here.
 
As far as a brand for mechanicals, Avid BB7 should satisfy your needs.
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Offline stumpy

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Re: disc brakes
« Reply #3 on: April 11, 2009, 10:43:23 AM »
thanks for the info guys. any feedback on the Hayes Stroker Ryde hydros? jenson has them for $100 each. I think my buddy wants to go hydraulic.
 
one other question that may sound stupid: how do I know if the mounts on the bike are right for the brakes? The Hayes description says they fit forks with 74mm post mounts, or I need an adaptor if they are 51mm.

Offline $irWattZZZZ

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Re: disc brakes
« Reply #4 on: April 11, 2009, 12:23:34 PM »
Post mounts on the fork accept a 160mm rotor without an adapter, which is the way I would go. If you go larger you will need an adapter. The new Hayes brakes are very nice, very durable with great stopping power. If you can spend a little more, I would consider the stroker trails as they have the thumbwheel adjuster for lever throw :)

Offline catman

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Re: disc brakes
« Reply #5 on: April 12, 2009, 08:23:40 PM »
thanks for the info guys. any feedback on the Hayes Stroker Ryde hydros? jenson has them for $100 each. I think my buddy wants to go hydraulic.
 
one other question that may sound stupid: how do I know if the mounts on the bike are right for the brakes? The Hayes description says they fit forks with 74mm post mounts, or I need an adaptor if they are 51mm.

Not a stupid question at all as adapters can become a little difficult at times. You'll probably still need an adapter for the rear since I've only seen a few bikes now that have post mount in the back. I run 160mm rotors on my all mountain bike and never had an issue stopping in Florida or in the mountains for that matter. I have the mechanical BB7's 160mm rotors) on my single speed and they are very good for mechanicals but you better believe I'll be upgrading to hydro soon as there is a deal I can't pass up. Some people swear by BB7's and won't have anything else but for the price I'd go with lower end hydraulics instead if on a budget.
 
I have Hayes Nine on my Freeride bike with 8 inch rotors and they are ok but adjustment can become a total pain if one of the pistons gets lazy on you (pretty common with this model). You can pick up Hayes Nine pretty cheap these days though.
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