disc brake spring wedged between pads and rotor
-
- Posts: 2631
- Joined: Tue Oct 20, 2009 10:36 pm
disc brake spring wedged between pads and rotor
Postby eeksll » Wed Aug 14, 2013 9:57 pm
I am pretty sure it happened due to a single incident cause there was no squeak then there was constant rubbing. Nothing really noticable though, I dont think I was even braking, think I was going uphill, commuting on shared path. Probably didn't help I jammed the brakes on hard a few times to try and get rid of the squeak.
- Duck!
- Expert
- Posts: 9858
- Joined: Tue May 21, 2013 8:21 pm
- Location: On The Tools
Re: disc brake spring wedged between pads and rotor
Postby Duck! » Wed Aug 14, 2013 10:06 pm
- A_P
- Posts: 435
- Joined: Tue Nov 09, 2010 12:07 pm
- Location: Gold Coast
Re: disc brake spring wedged between pads and rotor
Postby A_P » Wed Aug 14, 2013 10:16 pm
how worn are/were the pads.
I have avids, not seen this before
-
- Posts: 2406
- Joined: Sun Oct 12, 2008 7:15 pm
Re: disc brake spring wedged between pads and rotor
Postby }SkOrPn--7 » Wed Aug 14, 2013 10:57 pm
Ricky
-
- Posts: 2631
- Joined: Tue Oct 20, 2009 10:36 pm
Re: disc brake spring wedged between pads and rotor
Postby eeksll » Wed Aug 14, 2013 11:08 pm
There is 1 pad where the top section is worn off, I had originally assumed that was caused by this incident, but now thinking about it, maybe not? There definitely is not a gradual wear, its a step down and not a distinct step down. It looks like that bit was ripped off. Maybe it just got so thin, the top just crumbled away?
I tried to take a photo of it but my camera skills cant seem to get that bit in focus. I need a macro mode or something like that.
A_P, the top half being worn off, is that why you think they are running low? I just put new ones on, fairly sure its not running THAT low.
-
- Posts: 2631
- Joined: Tue Oct 20, 2009 10:36 pm
Re: disc brake spring wedged between pads and rotor
Postby eeksll » Wed Aug 14, 2013 11:12 pm
Ill keep that in mind, but given the path I commute on and the non-neccessity to actually brake, plus the speed at which i commute, i really really dont think thats likely.}SkOrPn--7 wrote:Your pads got over heated over a few times which caused the spring to soften and move getting caught. Next time alternate between front and rear to give pads enough time too cool down before they have to work again.
Ricky
thinking about it now, and looking at the new springand pads, i guess with that design, as the pads get low, it would be pretty easy for the rotor to catch the spring. especially since the bottom arm of the spring sits up a little.
- queequeg
- Posts: 6479
- Joined: Thu Dec 17, 2009 10:09 am
Re: disc brake spring wedged between pads and rotor
Postby queequeg » Thu Aug 15, 2013 6:26 am
- bychosis
- Posts: 7250
- Joined: Sat Jan 14, 2012 1:10 pm
- Location: Lake Macquarie
Re: disc brake spring wedged between pads and rotor
Postby bychosis » Thu Aug 15, 2013 7:12 am
+1 Me too, with avid juicy brakes. Turned around, walked back up the hill and drove to work that day. Been alittle more cautiosu since then watching pad wear.queequeg wrote:I have had the same thing happen, and as stated above, it is worn pads. You are supposed to replace the pads well before they get that far, as essentially the spring clip has contacted the disc rotor and torn off. You are almost to the grinding metal phase by then!
- FuzzyDropbear
- Posts: 330
- Joined: Wed Aug 15, 2012 7:55 pm
- Location: Ballarat, VIC
Re: disc brake spring wedged between pads and rotor
Postby FuzzyDropbear » Thu Aug 15, 2013 9:55 am
They do look a little low, however, when I installed my BB7s on the 200mm rotor they looked to be in a similar position to what's shown in the pic, I had to space the caliper out further to get it to where I wanted it. Now it runs nicely around the rotor with the pad in full contact with the outside ring. The Avids are the only ones I've seen to have had this sort of positioning (not that I've seen all the disc brake setups out there).A_P wrote:Is it just me, or does it look like the pads have been running a little low on the rotor?
how worn are/were the pads.
I have avids, not seen this before
- A_P
- Posts: 435
- Joined: Tue Nov 09, 2010 12:07 pm
- Location: Gold Coast
- FuzzyDropbear
- Posts: 330
- Joined: Wed Aug 15, 2012 7:55 pm
- Location: Ballarat, VIC
Re: disc brake spring wedged between pads and rotor
Postby FuzzyDropbear » Thu Aug 15, 2013 1:04 pm
Hmm, I'm assuming they're avids? That's where I have mine set but still had to put some shims in to get there, even with the correct adapter. Strange.
-
- Posts: 283
- Joined: Sun Feb 22, 2009 1:36 am
Re: disc brake spring wedged between pads and rotor
Postby cobba » Thu Aug 15, 2013 1:23 pm
A CPS washer stack is about 4mm thick.
Post a photo of the disc brake caliper mounted on the adapter.
.
-
- Posts: 2631
- Joined: Tue Oct 20, 2009 10:36 pm
Re: disc brake spring wedged between pads and rotor
Postby eeksll » Thu Aug 15, 2013 9:01 pm
thanks for pointed that out. When I get home Ill take some pics and post them up see what you guys think. Can't ever have enough braking power .
- Dragster1
- Posts: 1540
- Joined: Mon Jul 08, 2013 9:46 pm
- Location: Eluding motorist
Re: disc brake spring wedged between pads and rotor
Postby Dragster1 » Thu Aug 15, 2013 9:49 pm
-
- Posts: 2631
- Joined: Tue Oct 20, 2009 10:36 pm
- boyracer
- Posts: 793
- Joined: Wed Sep 10, 2008 9:29 pm
Re: disc brake spring wedged between pads and rotor
Postby boyracer » Fri Aug 16, 2013 12:41 am
If you pop the red cover off, you'll see a threaded pin ( that incidently is the same size as a schrader valve core tool). hold piston in with fingers, wind it back onto this adjuster, re fit pad, then wheel and you're off riding again.
If your brakes are coming loose when you 'jam 'em on hard' as one respondant said you're doing it wrong.....see your friendly LBS and please stay well away from where i ride.
- FuzzyDropbear
- Posts: 330
- Joined: Wed Aug 15, 2012 7:55 pm
- Location: Ballarat, VIC
Re: disc brake spring wedged between pads and rotor
Postby FuzzyDropbear » Fri Aug 16, 2013 1:16 pm
- Mulger bill
- Super Mod
- Posts: 29060
- Joined: Sun Sep 24, 2006 2:41 pm
- Location: Sunbury Vic
Re: disc brake spring wedged between pads and rotor
Postby Mulger bill » Fri Aug 16, 2013 7:00 pm
Eeksl, maybe you set up your 7s different to mine (road) but IMO having the torque arm that low at rest must give you pretty slow response. I'd send you the details of the method I found online that works a treat for me, if I could find it (laptop maybe, hmmm )
Shaun
London Boy 29/12/2011
-
- Posts: 2631
- Joined: Tue Oct 20, 2009 10:36 pm
Re: disc brake spring wedged between pads and rotor
Postby eeksll » Sun Aug 18, 2013 12:08 pm
Also it looks like the MTB which is running avid juicy also have the same issue, the front seems ok but it could probably be raised a touch, but it is evident on the rear.
Not that I have noticed, but it is the only cable operated disc brake i have ever used, so thats all I know. I have set it up so that any touch on the lever starts moving the brake arm, after installing the new pad, I think i can tighten it up a smidge, there is a very very slight bit of slack.Mulger bill wrote:Eeksl, maybe you set up your 7s different to mine (road) but IMO having the torque arm that low at rest must give you pretty slow response.
- queequeg
- Posts: 6479
- Joined: Thu Dec 17, 2009 10:09 am
Re: disc brake spring wedged between pads and rotor
Postby queequeg » Sun Aug 18, 2013 12:15 pm
The BB7 brakes are not adjusted with cable tension. Pull the cable through as tight as you can get it and tighten the bolt. The pad clearance is then adjusted on each side with the inboard and outboard dials. When fitting the calipers, you should centre the rotor slightly offset (as per the instructions).eeksll wrote:Ill go get my self some washes today. Had a look at my bb7 box and it looks like i get 2 washers, but according to the instructions they sit behind the bolt head so no help in raising height there. This is a pic of some of the spare parts that came with the bb7's, what is the little rubber o-ring for? I had a bit of a google but couldn't find any real info on those.
Also it looks like the MTB which is running avid juicy also have the same issue, the front seems ok but it could probably be raised a touch, but it is evident on the rear.
Not that I have noticed, but it is the only cable operated disc brake i have ever used, so thats all I know. I have set it up so that any touch on the lever starts moving the brake arm, after installing the new pad, I think i can tighten it up a smidge, there is a very very slight bit of slack.Mulger bill wrote:Eeksl, maybe you set up your 7s different to mine (road) but IMO having the torque arm that low at rest must give you pretty slow response.
As the pads wear, you just adjust the dials as required. You should never need to worry about cable tension.
- Duck!
- Expert
- Posts: 9858
- Joined: Tue May 21, 2013 8:21 pm
- Location: On The Tools
Re: disc brake spring wedged between pads and rotor
Postby Duck! » Sun Aug 18, 2013 12:19 pm
Assembly sequence: Bolt -> flat washer -> cupped washer -> domed washer -> brake caliper -> domed washer -> cupped washer -> adaptor (if you're stepping up from mount for 140mm rotor to 160mm rotor, or 160mm mount & 180mm rotor) -> o-ring.
That's providing you need to use the post-mount extension adaptor that's pictured. You don't need the o-rings for an IS - post-mount adaptor, such as in the earlier pics.
-
- Posts: 2631
- Joined: Tue Oct 20, 2009 10:36 pm
Re: disc brake spring wedged between pads and rotor
Postby eeksll » Thu Aug 22, 2013 12:20 am
2 washers had the bottom of the pad just below inner circle of the rotor, 3 went to high. Also concerned with 3 washers, the amount of screw in the post was getting short.
one other thing i found with the bb7 is they have a tension adjust screw and i noticed its basically all the way in. Is this normal?
- General Australian Cycling Topics
- Info / announcements
- Buying a bike / parts
- General Cycling Discussion
- The Bike Shed
- Cycling Health
- Cycling Safety and Advocacy
- Women's Cycling
- Bike & Gear Reviews
- Cycling Trade
- Stolen Bikes
- Bicycle FAQs
- Serious Biking
- Audax / Randonneuring
- Retro biking
- Commuting
- MTB
- Recumbents
- Fixed Gear/ Single Speed
- Track
- Electric Bicycles
- Cyclocross and Gravel Grinding
- Dragsters / Lowriders / Cruisers
- Children's Bikes
- Cargo Bikes and Utility Cycling
- Road Racing
- Road Biking
- Training
- Time Trial
- Triathlon
- International and National Tours and Events
- Cycle Touring
- Touring Australia
- Touring Overseas
- Touring Bikes and Equipment
- Australia
- Western Australia
- New South Wales
- Queensland
- South Australia
- Victoria
- ACT
- Tasmania
- Northern Territory
- Country & Regional
- The Market Place
- Member to Member Bike and Gear Sales
- Want to Buy, Group Buy, Swap
- My Bikes or Gear Elsewhere
- Cycling Brands
- Cannondale
- Garmin
- Giant
- Shimano
- Trek
Who is online
Users browsing this forum: No registered users
- All times are UTC+11:00
- Top
- Delete cookies
About the Australian Cycling Forums
The Australian Cycling Forums is a welcoming community where you can ask questions and talk about the type of bikes and cycling topics you like.
Bicycles Network Australia
Forum Information
Connect with BNA
This website uses affiliate links to retail platforms including ebay, amazon, proviz and ribble.