|   Avid mechs and sumoclass... thoughts? | BigRed
Jul 12, 2002 10:32 PM | | I'm a 280 lb rider, nothing too extreme. I like the idea of disc brakes and now, they are more affordable than ever. Avid Mechs sound like the shiznit, but they make 3 sizes. 160 (165?) mm is stock. But my fork was stock and set up for a 160 lb rider. Will I run into trouble with the std size? Can I still do tricks? Will I shred a rotor? Anyone? |
| re: Avid mechs and sumoclass... thoughts? | Spar¡cus
Jul 13, 2002 7:13 AM | | I'm not sure I understand your question(s). What is your specific concern with your fork/disc brake? Compatability? Are you asking which rotor size would be best for you?
The same caliper is used on all the various rotors. The only difference is the adapter which positions the caliper in the appropriate position over the rotor. For maximum performance at your weight I'd suggest a 185mm or 203mm rotor up front. A 185mm (pref) or 160mm in the rear will do the job.
You can still do tricks. Will you shred a rotor? I've been riding discs for two and a half years and never hacked a rotor but then I don't do 360°s off picnic tables or anything like that. You're no more likely to shred a rotor than you are a rear derailleur. (That happens, too.)
Go for it! You won't believe the improvement in braking performance.
--Spary |
| re: Avid mechs and sumoclass... thoughts? | BigRed
Jul 13, 2002 11:29 AM | | Re: the fork mention...
I just meant that from what I've seen, anything that is made as a "Standard" is usually meant for lighter riders and I'd have to either upgrade or get a larger size.
I'm mainly doing light riding that would not get me going downhill very fast. That's not to say I wouldn't like to, but I live in Cleveland for Pete's sake! My worry with the 160mm is that if I have to stop quickly, the calipers are strong enough to reall grab the rotor. But is the rotor strong enough to handle my weight multiplied many times over (getting all physics related here) if I brake really hard? What if I want to do a rear wheel stand? Endo? Will the rotor be able to handle that? With a larger rotor, there is less torque for the same amount of power. THE ORIGINAL POINT OF THE THREAD: Will 160mm work for me?
Also, lets say I get the 160mm, but they suck for me. What if I want to upgrade to 185 or 206 later? Do I just need a new rotor and a mounting bracket? Are these easy to find? |
| I agree with ^^^that guy^^^ up there... | næstep
Jul 13, 2002 10:03 AM | | I'm 235 lbs. I rode Avid's front 165 rotor for two years, and it was almost perfect. I'd start to get some overheating and noise on steeper, l o n g downhills, but the other 96.5% of the time it was the perfect all-around brake.
I've since swapped the 165 for a 185 in the front, and my overheating problem is bye-bye. I'd suspect this size would be fine for you, but the 208 front / 185 rear combo wouldn't be too much of a stretch, either.
I'm not sure what you mean by "shred a rotor", but if you're worried that you'll wear through it quickly, the 203's are 2.0mm rotors, compared to 1.8mm for their smaller sizes. That should be a little more abuse-proof.
næstep |
| Followup question | NCN
Jul 13, 2002 12:21 PM | | Hey Nate, I've got the older version of Avids with the 165 rotor -- do you know what my options are (or will be?) for going to larger disks? I've seen a lot of discussion, but nothing definitive. I'd assume I need a new adaptor, but does Avid make (or will they make) different adaptors for the 01 and 02 models to take care of the 5mm offset? Thanks for any info.
NCN |
| [ring! ring!]
I'll get it, Nate! | Spar¡cus
Jul 13, 2002 1:38 PM | | The Avid branded aftermarket large rotor adapters come with a pair of 5mm convex CPS (AKA V-brake) washers. If you use the old 2001 caliper, you're good to go with your old/current CPS washer stack. If you use the new 2002 caliper, you take out the last 3mm convex washers from your old/current CPS stack and replace them with the new/provided 5mm ones.
I bought a couple of large rotors/adapters and this is how they came. I also talked with Lonnie from Avid before I got the new adapter and he described the situation to me. The Adapter comes with instructions detailing the washer swap.
--Spary |
| About that, I just talked to Avid last week... | næstep
Jul 13, 2002 1:48 PM | | Lonnie over there has been really helpful. There was a big void right after Dennis left, but that's been taken care of, thankfully.
Anyhow, Lonnie told me that they're only making the adapters for the '02 calipers. The company felt there wouldn't be enough demand from us original-flavor Manitou riders to justify yet another adapter. That's the bad news.
The good news is there's a contingency plan. They're going to grab a handful of brackets and shave 2mm or so off the face to make up for the offset.
The other good news is they "should be receiving production samples within the next week or so" from Tiwan. Originally I was told to expect the chunky machined versions, like the IS guys got. Instead, they'll be slimmed-down forged versions.
I'd definitely get an email in to them so they know you're interested. I've got to wonder, since Manitou needed no adapter previously, do they have any idea how many of us there are out here? Eh, probably...
næstep |
| Oops! Assumed you had Manitou. Just read Sparty's post... | næstep
Jul 13, 2002 1:58 PM | | Ok, what he said if you've got the IS mounts.
At Sea Otter, Avid showed up with two sets of adapters. They planned forged adapters for the '02 calipers (which would ship with the boxed sets or be available individually). For us original Avid users, they had machined adapters that looked very similar to those from Hayes.
The second spacer method sounds more economical, but I'm surprised Avid would do that just to accomodate us oldsters.
Previously, Lonnie thought that's how they might handle the Manitou adapters (extra spacers for '02 users).
næstep |
| Thanks guys -- I got it now (nm) | NCN
Jul 14, 2002 7:56 AM | | |
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