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Questions tagged [rotor]

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0
votes
2answers
100 views

Loud “thunk” sound each time my shoes pass the 1 o'clock position with both shoes

Folks, I need a hand. Does anyone know of a bike mechanic that can diagnose problems via FaceTime or another audio/video app? I ride strictly indoors (I’m in Iraq) and there’s a knocking coming from ...
1
vote
1answer
36 views

Spacers and boost hubs, yes or no?

Is it possible or recommended to use spacers to fill the gap left by using 100mm front and 142mm rear hubs on boost frames and forks? Is it fair to think to add possible 2 x 3mm spacers rear ? 5 + 5 ...
4
votes
2answers
202 views

Are disc brake rotors interchangeable between brands?

I have Tektro HD-R310 brakes, with center lock rims, using the new and only center lock rotors from Tektro TR160-35 Well after 2 months of driving in winter, i already notice some rust on the rotors (...
1
vote
1answer
89 views

How to chose the correct hydraulic disc brake rotor size for touring bike?

I have ordered a Shimano Deore M6000 disc brake set. What rotor size should I chose for my touring bike? I am 85 kg and my bike is approximately 15-20 kg.
1
vote
3answers
176 views

How do I know what brake rotors to get for my bike?

In the next month or so I plan on getting the 2019 Trek Crockett 5 as a cyclocross/road bike. I will also be getting some nicer road wheels for the bike so I can swap out the wheels whenever needed. ...
14
votes
6answers
6k views

6-bolt vs centre-lock: pros and cons?

I am having a new set of wheels built, and am trying to decide on whether to go with 6-bolt or centre-lock rotor interface. What are the pros and cons of the two systems?
1
vote
4answers
155 views

Lever pulsates while braking

I installed a new front float rotor, the ones that you can get from AliExpress. I have Deore XT brakes. While using the front brake the lever moves back and forth while pulling it. I inspected ...
2
votes
1answer
138 views

Q-rings shifting chain not smoothly hitting the teeth

I bought my bike with Q-rings a while ago. Recently I switched to NoQ rings because I wanted to make a better comparison (hadnt ridden round rings in 2 years). This weekend i re-mounted the Q-rings ...
4
votes
1answer
161 views

How should disc brake rotor size scale with wheel size?

I was wondering whether 20" wheels can get away with smaller rotors than 28" wheels, and if there is a correlation, if it is linear. If it was linear, then 140mm discs on a 20" wheel would be ...
5
votes
1answer
347 views

What are the reasons for these two very different post mount adapter designs?

I'm looking to adapt my 160mm post mount front fork to accept a 180mm rotor. As I'm looking between adapters, I find them falling into two very distinct categories, and I'm wondering if there are any ...
2
votes
2answers
1k views

Shimano SM-RT900 Dura Ace Center Lock Rotor on Ultegra

Is it possible to fit the Dura Ace Rotor (SM-RT900) if you have the Ultegra R8020 hydro disc . ?
4
votes
1answer
101 views

Alternative way for truing disc brake rotor after a couple of truing procedures

2 days ago after the last ride my front rotor (Ashima AiRotor 203mm) twisted again in a small area on it (not hit in obstacle or overheated), I was almost ready to throw another half an hour from my ...
5
votes
2answers
880 views

Disc brake adapter too close to rotor

I've just bought a new (Planet X) Holdsworth Stelvio (http://www.planetx.co.uk/i/q/CBHOLSTELTIAG/holdsworth-stelvio-shimano-tiagra-4700-touring-adventure-bike) and am having a problem with the front ...
0
votes
2answers
409 views

Bike Hydraulic Brakes constantly pressing against the rotor [duplicate]

I hope you can help me with this issue. My bike has Avid juicy 7 brakes, and lately both the front and the rear brakes are pressing against the rotor, which makes it really hard to ride it (feels like ...
5
votes
2answers
6k views

Disc brake rotor compatibility and recommendation

I have Ultegra BR-RS805 flat mount hydraulic brakes on my gravel bike, and Shimano RT86 6-bolt Ice Tech 160mm rotors. There's a shim between the brakes and the frame to fit the 160mm rotors. When the ...
11
votes
4answers
2k views

Are rotor bolts designed to shear?

I was toying about with a disk brake for the first time and managed to shear two bolts clean off while reassembling. Curiously, both tore the head off, leaving the threadded shaft in the tapped hole ...
3
votes
1answer
170 views

How to store old hydraulic disc brakes?

Since I'm replacing my old Shimano M446 hydraulic disc brakes with new ones, I'm wondering is there a way to properly store disc brakes that are not in use (disassembled from bike frame)? At the ...
3
votes
1answer
133 views

Sociable quadracycle build. Disc brake rotor size?

I'm building a quadricycle. This sociable is planned to be around 120 lbs / 54.5 kg. The only "Guide" to proper rotor size versus weight is one I found from Magura. Average pilot/rider weight I figure ...
4
votes
2answers
7k views

How to upgrade disc brake size

My new bike has disc brakes, and the front brake leaves something to be desired. I want to upgrade to a 180mm front rotor. Do I need to change any components besides the disc itself and an adapter for ...
1
vote
2answers
831 views

Shimano R785 140mm options

I'm looking at replacing my wheels on my Cannondale Synapse, and I can get a pretty good deal on a set of Renolyds 6 bolt hub wheels, but Shimano does not make a 6 bolt 140mm set of rotors. What I'm ...
2
votes
1answer
273 views

Little rear rotor clearance

I have just test fit my wheel on a Litespeed T5gravel that I'm building and I see there is less than 1mm of clearance between the rear rotor and the chain stay. The rotor is currently a 160mm avid ...
1
vote
1answer
515 views

What size rotor does the Cannondale CAAD10 2015 have?

I have a Cannondale CAAD 10 disc frame and a pair of BB7s that are 160mm rotors. They do not fit because (I think) I need post mount spacers. What size rotor does the frame expect, and hence, what ...
3
votes
2answers
812 views

Upgrading to new hydraulic brakes - should I put same sized rotors on front and rear wheel?

I would like to upgrade brakes on my bike but I have a dilemma / question - currently, on my front wheel there is 180 mm rotor and on back wheel there is 160 mm rotor. Is there any reason why bike ...
4
votes
2answers
1k views

Switching brakes from mechanical to hydraulics. Disk rotor question

Can I use the disk rotor from the current mechanical brake when I switch to hydraulic?
5
votes
1answer
952 views

Using different style disc rotors with the same brake calipers

I currently have a set of TRP Hy/Rd brakes that came with 6-bolt style rotors. I am interested in purchasing a different wheelset that uses Shimano's centerlock style hubs. One wheelset would serve ...
2
votes
4answers
215 views

Can an imperfect hub make a disc rotor rub?

I had a 160mm disc rotor on a road bike that was rubbing a bit in one spot, not severely, but enough for me to notice. I've tried to true it a few times over the past couple months with little ...
3
votes
1answer
194 views

Brake hard on new cycle

I saw someone after buying a new bicycle (a hybrid), pulled the brake as hard as he could for few seconds and dragged the cycle along while braking like that, 1 brake per centimeter. Why did he do ...
3
votes
1answer
76 views

Pistons are aligned only without pads in

I've reset the pistons (after taking the pads out) of my XT hydraulic brakes, and made sure they do extract evenly when operating the lever. After putting the pads and the wheel back in (and adjusting ...
1
vote
2answers
511 views

Rotors bent very slightly but no rubbing. Is driving safe?

I just bought Rockrider 520 with Tektro Auriga Comp hydraulic disk brakes on it. I didn't ride it yet. Both brake rotors have a very slight bent and no rubbing. Just nearing both pads every round and ...
2
votes
1answer
95 views

How to increase range of disc brake pistons?

Recently swapped over my disc brake pads, but discovered that the pistons lightly scrape the rotor when not braking, and when I am braking it doesn't make much of a difference and it allows me to pull ...
0
votes
1answer
593 views

Not enough space to adjust the caliper

Today I have noticed that when I push the rear brake lever (hydraulic disc brakes) the rotor is a little bit bending , but it wasn't rubbing the caliper . I came to a conclusion that rotor is not ...
4
votes
3answers
4k views

changing disc brake pad material while keeping same rotors

I would like to know what effect changing the material of a set of disc brake pads would have on the rotors if you kept them the same. for example, If I have resin pads and have been using them for ...
2
votes
1answer
221 views

Are both sides of a Avid rotor the same?

i've got a Cotic Roadrat, and the disc mount on the fork is on the right hand side (as you're seated). However, the front rotor of the avid BB5s (road) i just bought can only be fit on the left fork ...
9
votes
2answers
20k views

Should rotors have no rub at all?

I just installed a new front disk brake and the rotor rubs a bit once per rotation. If I take the rotor off and place it on flat surface, it seems totally flat but once installed I can see/hear it ...
1
vote
2answers
744 views

Rubbing disc brake caliper

Finally I bought my new hydraulic disc brakes (Shimano M-446) and installed it on my bike . It was a little difficult to adjust the calipers , because the space between the pads is smaller than on my ...
9
votes
2answers
3k views

Bicycle disc brake rotors

It is time to change my bike's hydraulic disc brakes . Now I have a Hayes Stroker Ryde system , but I want to order a Shimano M395 instead . The question is that I don't know If I have to order the ...
7
votes
1answer
4k views

Can I use a Center Lock hub and disc brake rotor in place of an ISO hub?

I currently have a regular ISO disc brake hub and rotor on my front wheel. I'd like to replace it with a Shimano generator hub, but all Shimano hubs use Center Lock rotors instead of ISO. The Center ...
12
votes
2answers
13k views

When Should I replace the rotors on disk brakes?

I've probably done about 20k on the rotors I bought the bike with. They still work fine, but are visibly worn and slightly grooved from me not replacing the pads soon enough a few times. How do I ...
28
votes
3answers
40k views

Is there difference in quality for disc brake rotors?

I am on the hunt for new rotors for my mechanical disc brakes, as the old are too twisted now and the brakes can't be adjusted without the disc rubbing the pads. What is the difference between the ...