Unanswered Questions
56 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
0
answers
53
views
Changing gear usage of Rohloff gears
I have a R&M Homage with Rohloff e-14 gears. I find I really just use gears 7 - 14. Can sprockets be changed so I would mainly use gears 4 - 11??
- 21
2
votes
1
answer
159
views
pedals only move bike at highest gear
Recently my bike will only move if I’m in the highest gear. I can pedal at lower gears but it will not move my bike forward at any reasonable speed and when I get up to even a very low speed the ...
CommunityBot
- 1
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
183
views
Bicycle chain roller diameter size chart?
I'm digging for a while now, and can not find any helpful chart for chain roller diameters e.g. Shimano 8,9,10,11,12 speed. It differs of course depending on the manufacturer and the purpose. We know ...
- 153
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
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
207
views
Slight crackling sensation apparently due to the chain sticking to the cassette teeth
I've just assembled my bike, so it has hardly been ridden (less than 200km) and all the components are new.
Everything works perfectly, except an unpleasant very slight crackling sensation when I ...
- 21
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
477
views
Adjusting road bike to Wahoo Kickr: is this chain noise from cross-chaining, or do I need to index the gears?
I've got an 8-speed Mérida road bike (that is, 2x8, 2 front, 8 rear) that I'm fitting to a 2020 (v5) Kickr that I just bought new. I am learning about some bike mechanic stuff that despite many years ...
- 1,061
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
70
views
Crunching Gears
I had a crash a while back on my road bike and I checked my bike thoroughly and it seemed pretty good. I went on a ride today and the gears were constantly crunching, shifting between gears was fine ...
- 611
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
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
240
views
which motor is used to change gears in automatic gear shifting cycle now-a-days?
I am doing a project on automatic gear shifting. I need to choose which motor will be used to change the gear.
I have found a previous question on this topic. An answer mentioned:
If you used a ...
- 273
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
56
views
Pie plate cog on SRAM 2x
Okay guys, I'm trying to re-find fitness in my mid-40s.
My bike has a SRAM Apex (don't laugh, if it's good enough for Alberto Contador, it's good enough for me - and you!) 10-speed drivetrain with ...
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