Unanswered Questions
54 questions with no upvoted or accepted answers
6
votes
0
answers
109
views
What is forward drag on a coaster brake
I have a single-gear coaster brake bicycle that needed fixing. I would have to pedal real hard to get it to go and backpedal a block in advance for bike to stop. Very spongy brakes. Well I took brake ...
- 13.9k
2
votes
0
answers
46
views
Why have my rim brakes started making a scraping noise?
I bought a bike about 7 months ago, and I've noticed over the last few weeks that it's started making an unpleasant scraping noise when I brake. Does anyone know what might be causing this and how to ...
- 121
2
votes
1
answer
74
views
Sram/Avid brake hose compatiblity
I have Sram Rival AXS which I want to transfer from one bike to another. Unfortunately the new bike is bigger (M -> XL) so new brake hose is required. SRAM recommends SRAM Brake Hose Kit - Double ...
CommunityBot
- 1
2
votes
0
answers
95
views
Cable housing end cap for BR-M375
I replaced the no name brake calipers on an entry-level ebike for Shimano BR-M375. The cable housing for the rear caliper was a bit too long, so I cut off a few centimeters. Then, I put a new 5 mm end ...
- 4,159
2
votes
0
answers
284
views
after multiple brake bleed, lever's max stiffness is still close to bar
so after a few bleeds i've done on these Shimano saints, because of new levers replacement, i've found that the rear brake lever, although on max stiffness, goes way further to the bar then the other ...
- 185
2
votes
0
answers
249
views
Service DMR V8 pedals - V2 and V2.1
I have been using DMR V8 pedals on my bikes for just a couple of months. They started to spin slowly and make noise really quick so I'm trying to service them.
I'm not sure that I got it right with ...
- 1,037
2
votes
0
answers
177
views
SRAM Hydraulic brake stuck (with a changed bite point) after landing/impact
I experienced a weird problem on my SRAM level t 2 piston brakes.
I like hopping my bike around, e.g. bunny hopping onto curbs. Sometimes, if the impact is hard, the brake lever would have reduced ...
- 121
2
votes
0
answers
232
views
Which ball bearings to put in Union K10491 pedals?
I am trying to put a neglected bicycle back on the road. It has a pedals marked with W. GermanyK10491. Google search revealed that they are Union K10491 pedals. I have found good pictures on ebay. My ...
- 128k
2
votes
0
answers
161
views
What kind of frame and brakes are these?
I just bought a bike and I can't figure out what kind of frame and brakes it has.
I found that the derailleurs were made by DNB Japan somewhere around 1960 and that the handlebar is french (Guidonn ...
- 128k
2
votes
0
answers
3k
views
Shimano Nexus 3 coaster brake screeching sound
When I brake hard/er with my Shimano Nexus 3 coaster brake it makes a loud screeching sound. Like really loud, everybody on the street would hear it and turn around. Since I know it's all internal all ...
- 352
2
votes
0
answers
706
views
Internal Roller Brake Problem
I have Shimano Inter M Roller Brakes on my bike. I felt the rear brakes were a bit light after riding 800 or so KM (total mileage on my bike so far) so I thought maybe theres a bit of cable stretch ...
- 115
2
votes
1
answer
174
views
Front Mountain Bike Cable Disk Brake Is Too Snappy on First Pull
When I grab my front disk brake for the first time on a ride after my bike has sat for a while it will buck me forward. Once it bucks me it works great. I have tried cleaning it with disc brake ...
1
vote
0
answers
77
views
Pedal Stroke Analysis on a BikeErg
Hello I'm in the market for an indoor bike and am considering the BikeErg. I'd like to know if there is a way I can do pedal stroke analysis like that offered by the Wattbike (https://support.wattbike....
- 121
1
vote
0
answers
91
views
Silver greasy coating on disk brakes
Today I came in to the bike mechanic to align my disk brake calipers and they came out with the disk brakes covered in a silver lubricant (they said that this was especially for disk brakes)
They ...
- 11
1
vote
0
answers
178
views
Fixie bike crank/pedals give in when back pedalling
Recently was given a fixie, but with braking issues.
Whenever I back pedal (as in lock up and stop pedalling completely), the crank/pedal seems to give in and not stop the rear wheel from moving ...
- 1
1
vote
0
answers
467
views
Magura mt5- non stop micro bubbles coming out while bleeding
I have a problem bleeding my Magura MT5 brakes.
I used two 50-ml syringes and the EZ MTB bleed kit. I pushed fluid from the syringe attached to the caliper to the top (at the lever) and back again.
I ...
- 11
1
vote
0
answers
108
views
when bike kept inside, brake/ lever goes extremely stiff
so, I've been through a lot of fiddling with my brake levers, giving them a small clean out and bleed, but I've noticed now that when i keep my bike inside (on heated floor) the brake levers go stiff, ...
- 185
1
vote
0
answers
117
views
Disk brake issues
I’m new to disc brakes and noticed my braking power decreasing. Took the pads off and they look like this. Do these lines indicate anything? What is a used disc brake pad supposed to look like? What’s ...
- 11
1
vote
0
answers
133
views
Campy cranks and pedals compatibility
I have a campy Super Record crank set from around the 1970’s stamped with 9/16x20F and campy pedals stamped with 9/16x20, but am met with lots of resistance when I try to install them.
The cranks came ...
- 131
1
vote
0
answers
80
views
Tektro rear brake does not stay closed
Two weeks ago I had an issue about my brakes QR not working and asked about on this site Road rim bike brakes don't open when using the release
I got some help - and I am very thankful for that - ...
1
vote
0
answers
1k
views
Tricycle wheels won't turn when pedaling
I have a tricycle that I just changed the tubes on all wheels. Went to ride it and the pedals will just turn but not engage the chain or wheels.
Chain is on correctly, wheels are on the same side as ...
1
vote
0
answers
82
views
Are Magura HS33e levers compatible with HS22 brakes?
I plan to convert a bike with Magura HS22 hydraulic brakes to electric. Thus I would like to replace the brake lever by one having the controller output to stop the motor while braking.
From my ...
- 128k
1
vote
0
answers
84
views
Differences and effects of brake lever offset
I've seen some flat bar brake levers where the the pivoting plane of the lever blade is offset and not in line with the center of the handlebar's cross section.
What's the purpose for such design? ...
- 1,305
1
vote
0
answers
115
views
Brake on a pre-drilled track fork
I want to put a front brake on a Cinelli Parallax (track/fixed gear bike). It’s got a predrilled fork, but still a cap on it (as far as I know the cap is made of some kind of wax). What’s the cleanest ...
- 1,945
1
vote
0
answers
158
views
Bike makes noise while 2 out of 3 gears
I assembled a new bike. It rides smooth in first gear but makes a particular noise in 2nd and 3rd gear. It doesn't seem to be from the wheel because it's not there if I turn the wheels in air, but it ...
- 12.9k
1
vote
0
answers
64
views
Re-greasing Raleigh rea268
I have some pedals very similar to the one in the image.
It appears both sides have these seemingly non removable pins.
The round bit with the logo doesn't appear to be a dust cap. I already tried ...
- 75.8k
1
vote
0
answers
138
views
Hydraulic disc brakes operating by themselves
When cycling up steep inclines on my mtb sometimes the rear disc brake comes on without me being anywhere near the brake lever. I can tell it's doing it as it's gradual and pedalling becomes difficult....
- 17k
1
vote
0
answers
372
views
Hayes Sole Disk Brakes, adjusters stiff/seized?
Second hand bike, my first time encountering Hayes Sole brake calipers. My brakes front and back have gone a bit weak so I wanted to tighten them up a bit. Each side of caliper has an allen key ...
- 215
1
vote
0
answers
223
views
Can I combine two pm break mount adapter?
I think about upgrade my shimano rear brake disc from 180 to 203 mm. The mount system is a pm 160 direct, meaning I currently already have a pm 180mm adapter.
Weirdly, I couldn't find an adapter for ...
- 395
1
vote
0
answers
89
views
How much clearance do I need for cross levers?
I'd like to put cross (interrupter) brake levers on my drop-bar tourer, but I also like to use a bar bag. There is about 55 mm of space between my bars and the bar bag, measured horizontally. Will ...
- 499
1
vote
1
answer
186
views
Why are my quill pedal cages "wobbling"?
The plates and connectors on my old quill pedals "move around" in relation to the pedal axle itself: In the photo below, I'm pushing the pedals to opposite sides to show how the pedal cage "distorts". ...
CommunityBot
- 1
0
votes
0
answers
97
views
How do you put a usable brake on a bike trailer?
How are you able to brake when on a bike trailer? I am making a bike trailer and need some tips on how to make it.
- 128k
0
votes
0
answers
56
views
My tricycle wont pedal and the chains are on it just wont engage
While pedalng,I heard something snap on my tricycle and when I went to continue pedaling the pedals just spun,so I checked the chains and they were in place but wouldn't engage and turn the pedals and ...
0
votes
1
answer
382
views
Tektro HD-M275 rear brake making grinding noises while braking
I got Tektro HD-M275 hydraulic disc brakes with 180mm rotors, front brake is working perfectly with no issues. Under light braking rear brake works normally without any noises or vibrations, but as ...
CommunityBot
- 1
0
votes
1
answer
565
views
SRAM force axs brake judder/shake/vibrate
I have problem with my SRAM force axs brakes, I bought new disc brake rotors and as well brake pads, cleaned it all changed it, but yet when I brake it just totally judders or vibrates it just doesn’t ...
CommunityBot
- 1
0
votes
0
answers
103
views
Schwinn AC Performance Plus with Carbon Blue Pedal Exchange
I want to switch out the pedals on my Schwinn AC Performance Plus with Carbon Blue for the Venzo 3-in-1 pedals (I only use SPDs & don’t like the sneaker cages). On the Venzos, the part that ...
0
votes
0
answers
250
views
Type of brakes that will work with beach cruiser with no brake hole in wheel
My daughter has a 24" beach cruiser and doesn't like pedalling backwards to stop. She really wants hand brakes. There is a hole in the frame above the tire (where a rear light might be installed) ...
0
votes
0
answers
79
views
0
votes
0
answers
109
views
can't stop pedaling or chain drops down
Managed to unstick derailer. But can't stop pedaling or chain drops down.So when trying to stop bike. have to take feet off pedal to not catch chain
0
votes
0
answers
87
views
Initial resistance / detent feeling in hydraulic brake
My brake has a up-front amount of pressure it needs before it will then engage. It feels like I'm actuating a clicky button and not a continuously moving brake. What could be causing this?
- 101
0
votes
0
answers
179
views
My shimano ultegra quick release is not working because the ball bearing inside got lost, can someone help me to identify the size of it?
Can someone help me because my ultegra caliper quick release system is not working because the ball bearing inside got lost (see picture below)
- 5,202
0
votes
0
answers
568
views
How can I determine what postmount I need for my fork / rotor for front and back
I am planning to purchase Shimano Saint BL-M820 + BR-M820 hydraulic disc brake set for my Specialized Stumpjumper Comp and I have no idea what post-mount to buy since I changed my fork and I am pretty ...
- 75.8k
0
votes
0
answers
42
views
I require advice on a recurring problem with my brakes
I've had a bike with hydraulic brakes for about six months now, and have a problem with the brake just losing power. I think it's fluid being lost.
This is a question I asked earlier
Something wrong ...
- 128k
0
votes
0
answers
183
views
Is it possible to use cantilever brake pads with caliper brakes?
Pretty much what the title says. I have an unused set of threaded post brake pads designed for V-/cantilever brake mechanisms (DIN EN 14766 if you're curious). Can I safely use these in a more modern ...
- 89
0
votes
0
answers
76
views
Brakes QHD-6 Tork - how to fit new pads
I have a Claud Butler MTB which is fitted with QHD-6 Tork hydraulic brakes.
Whilst these have worked really well for a number of years, recently the rear brakes stuck on whilst I was out.
I have now ...
- 75.8k
0
votes
0
answers
568
views
What force (in newtons) are disc brake mounts built to handle?
I'm testing a dropout design and wondering what the standard force is considered for disc brake mounts. Simulation of mine suggests a safety factor of 15 with 2000 newtons applied to the ISO brake tab/...
CommunityBot
- 1
0
votes
0
answers
817
views
Clarks Exo hydraulic brakes can't get fluid in
my son has a Carrera Kraken which is fitted with clarks exo hydraulic brakes.
he mistakenly cracked off the bleed nipple last week causing the front brake to be pretty much non operational.
I ordered ...
- 75.8k
0
votes
0
answers
2k
views
Shimano SPD pedal - visible seal ring
I recently got a pair of XTR M9120 pedals. Today I noticed an elastic ring visible on the axel, and bits of grease on it too. The ring can be seen on the service manual
This has happened on both ...
- 367
0
votes
0
answers
486
views
How do you optimize the recruitment of our glutes when using a more upright bike?
How do you optimize the recruitment of our glutes when using a more upright bike?
According to an answer for a previous question, rolling the hips forward slightly makes the glutes easier to recruit ...
- 1,043
0
votes
0
answers
1k
views
What sort of SPD pedals should I use for cyclocross?
So I do cyclocross and have recently got some SPD cleats, the problem is my pedals are eggbeaters which isn't great.
I was thinking in investing in some half and half pedals (like enter these) or ...
CommunityBot
- 1