All Questions

3
votes
1answer
270 views

Is there a front derailer type that can be mounted on a frame without braze on or fitting on the seat tube, or clamping?

As the question says, is there a front derailer type that can be mounted without having a fitting or braze on on the seat tube, or without clamping to the seat tube (because it's a weird shape, or ...
0
votes
1answer
68 views

Replacement tyres for my daughter's used bike

I bought a used Orbis Jewel 20 Zoll for my daughter but I must change the tyres Honda 20x2.125 white but I cant find this exactly white tyres and in this dimensions. I found only black tyres .... she ...
0
votes
2answers
92 views

Sticking pedals problem [closed]

I have a Raleigh bicycle and am currently unable to rotate the pedals backwards while riding. The cassette gets stuck in the anti-clockwise direction. Could anyone tell me the solution?
0
votes
1answer
51 views

Where to find specific vintage rim/wheel?

I have a 1983 Lotus Unique that came with 27 x 1" Ukai rims. The front wheel went missing and I'd like to find an original replacement. Lots of 27 x 1 1/4" or 1 1/8" out there, but I haven't been able ...
1
vote
2answers
202 views

What size rim is OK?

I have a 700x35c rear rim, it's bent pretty bad, but only can find 700x38c rims, is that ok to use? Or should I keep hunting for the same size rim?
2
votes
2answers
252 views

Can I replace a Shimano FC-MT500 26/36 crankset with a Shimano Ultegra FC-R8000 36/46 set?

On my Kross Level 10.0 MTB (2x10) used mostly on dirt roads and pavement I find I never use 1-10 and seldom go below 15th but I need more top end speed. Wondering if the Ultegra would be a straight ...
-1
votes
1answer
135 views

I'd like to know what kind of bmx bike I have

I got this frame in an old pile of junk ,can you please let me know what kind it it t/y
3
votes
4answers
233 views

How to commute by (electric) bike in excessive heat

I am from India and this is beginning of summer. I rented an electric bicycle for daily commute during winter but now it is difficult to do during summer screeching heat. What should I do to continue ...
1
vote
1answer
57 views

Is ISIS compatible with BSA?

I want to get a Cyclone motor to install into my bike. My bike has a 120mm BSA bottom bracket, and the motor is available in Square Tape and ISIS varieties. Are these compatible?
0
votes
1answer
74 views

What bike should I get? For forests and city mainly [closed]

So right now I've got a hard tail but I'm not really happy with it. At the moment I'm only riding my bike in the city even though I am planning on riding it in the forest and parks as well. My ...
0
votes
2answers
107 views

Repair vs replace my Trek 1.5

Just brought my 2010 Trek 1.5 into my LBS to get a tune up. They quoted me 475 based on needing to replace both rims as well as the slightly bent handlebars. Which gave me pause in that maybe I should ...
2
votes
2answers
478 views

Gears on left are inverse to gears on right?

I have a target bike, so I already know some things may be off from real bikes. And I'm aware I should get a real bike if I wanna do just about anything. On the left side of my gears (the ones that "...
2
votes
1answer
58 views

swapping crankset and chainline compatibility

I'm looking into placing a power2max powermeter on my bike, which is full Ultegra equipped (R8000). Now, the chainline specs of the crankset from p2m are either 45mm or 46mm (depending on the brand of ...
2
votes
2answers
97 views

What could be causing excessive friction in a new rear hub?

I recently had my bike (Focus Mares CX) serviced by my LBS, during which they replaced my wheels with a set of new Campagnolo Khamsin wheels. In the month since I had that done I've found it markedly ...
2
votes
2answers
58 views

Is the Shimano UN55 bottom bracket in 68x122.5 and 68x127.5 sizes JIS square taper?

On one online sales site there's a drop-down widget showing various sizes of the Shimano UN55. "JIS spindle" appears as a bullet-point next to someone of the size choices but not all of them, hence ...
1
vote
0answers
41 views

V brake collects metal fragments [duplicate]

My V brake makes grinding sounds when pulled. I've checked, and it keeps collecting metal fragments, presumably from the rim. The pads are weeks old, the rim was replaced a year ago. What can cause ...
3
votes
1answer
81 views

Are road bike shifter hoods compatible across models?

I've been using Shimano Sora Shifters since about 2012 .. probably one generation before the current (https://bike.shimano.com/en-EU/product/component/sora-3500/ST-3500.html) The rubber covers are ...
3
votes
1answer
51 views

How do I reassemble this Quando rear hub?

Closely related to how to reassemble mountain bike rear wheel hub and bearings, but not quite identical and my noob brain cannot piece things back together. I disassembled the rear hub to clean it ...
6
votes
2answers
1k views

Can I convert a rim brake wheel to a disc brake wheel?

I recently bought some Roval SLX 24's from eBay. I made a pretty silly error and didn't check whether they were rim or disc brakes. I need them to be disc brakes. Should they be rim brakes, will ...
8
votes
4answers
281 views

Daily commute as HIIT training?

I'm cycling to work every day. It's 2x8km it takes around 30 mins (depends on weather, traffic and whether I want to push it or just cruise. I'm starting to see it as an opportunity to make it some ...
4
votes
2answers
59 views

Removing Derailleur Hanger from Devinci Spartan

So I'm in need of new derailleur hanger and bolt kit. My question is how to remove the hanger from my kinda frame (2018 Devinci Spartan). I'm used to just using a 5mm Allen key to unscrew two little ...
1
vote
1answer
63 views

Ebike battery - volts and wattage

Will a 36V 500W ebike with a 36V 17.5Ah battery go farther and faster than a 36V 250W ebike with a 36V 10Ah battery, or will I give up something by doubling that wattage?
2
votes
1answer
85 views

Brake weirdness on my new E-bike

I very recently purchased an E-bike for commuting to work and other area locales. I understand with any new bicycle there will be some break-in time and after a few rides I did notice the brakes were ...
4
votes
3answers
124 views

How to assess safety of carbon frame after crash?

I was recently hit by a car which pulled onto a roundabout. The driver hadn't seen me. The car hit me hard enough to actually snap the rim of my rear wheel. The bike has a carbon fibre frame and ...
0
votes
0answers
41 views

What can this bike do? [duplicate]

I have this bike for quite some time. I want to know if this bike is good for for xc, trails or trials. And also I want to know if this bike frame geometry is good for doing manuals, bunny hops Here ...
4
votes
1answer
85 views

Can I upgrade to newer groupsets despite my frame not supporting internal cable routing?

I was given a 5 year old bike with alloy frame with an old Sora groupset and I'm planning to upgrade to the newer Shimano 105 r7000 groupset. Apart from my Shimano R500 wheelset(which I know only ...
2
votes
1answer
79 views

Constantly engaged disc brakes, how hydraulic brakes retract?

I'm building a little velomobile and I'm thinking of creating a handbrake (park brake) feature where I'd engage the brakes when I leave it somewhere so it can not move (slope, get stolen or whatever). ...
0
votes
1answer
63 views

Swytch eBike conversion wheel axle diameter

I purchased the Swytch eBike conversion front wheel but I found that the axle was 11mm in diameter, which was too big for my hybrid bike and any other bike fork I've tried. Could you tell me if there ...
7
votes
5answers
2k views

Giant Toughroad SLR 2 for 200 miles in two days, will it make it?

I own a Giant Toughroad SLR 2 bike, it's an hybrid bike and I'm planning to register myself in a Seattle to Portland ride. It's a 2 day - 200 miles ride from Seattle to Portland. The question is ...
1
vote
0answers
63 views

Can't get in first gear on Shimano ten speed block

Just replaced drive chain on mtb ... new cassette (Shimano 10 sp ) new chain (Shimano 10sp) new rear mech (Shimano 10sp long) and new (Shimano 10sp). I've set bottom stop tensioned cable and adjusted ...
1
vote
0answers
31 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 ...
8
votes
0answers
111 views

Cut off tubeless plug head?

I use tubeless tires ranging from 30 to 40mm in width. When I puncture and the sealant doesn't cut it, I plug the hole with a Dynaplug. On longer rides, I carry a spare tube (or two) just in case. It ...
4
votes
5answers
2k views

Could the E-bike drivetrain wear down till needing replacement after 400 km?

The drivetrain (chain? gears?) of my E-bike started to make loud clicking sounds, with the impression that the chain is skipping over teeth. The gear switching itself still works well. I have tried ...
0
votes
1answer
47 views

What can cause narrow disc brake gap in TRP Spyre-C?

I have mechanical disc brakes (TRP Spyre-C), second year. Last year I removed and mounted wheels without problems. This year I am all surprised because I cannot adjust the rear brake. Front -- no ...
0
votes
1answer
46 views

Discs rubbing no matter what I do

So a couple of days ago I regreased my back wheel hub bearings, put it back together so there's no play, golden. But when I put it back in the bike one side is constantly rubbing. Tried loosening ...
1
vote
0answers
44 views

Is this Raleigh headset worn?

I was wondering am I correct in saying this this headset race is worn and needs to be replaced. It's off a BSA wayfarer bike. It has a 1 inch threaded steerer. I read on Sheldon's website you can ...
1
vote
1answer
47 views

What kind of fork end is this?

I am looking for a new city/urban bike and thought that a gear hub would be a nice addition (before this I was exclusively using derailleur gears). To get started I was reading the wiki page on fork ...
3
votes
4answers
711 views

New brakes for 90s road bike

I am riding 90s road bike with Shimano 105 dual-pivot brakes and brake levers, and 2x7 downtube shifters. Since braking becomes less and less reliable I want to replace both brakes and levers with ...
4
votes
2answers
122 views

How can I fix brake pads being too tight even after pushing the pistons back in?

I just got delivery of a road bike with SRAM Red disc brakes. It was delivered with little inserts in the brake pads to prevent accidental squeezing of the lever when the rotor was not in. When I put ...
1
vote
2answers
97 views

Rear derailleur mounting bolt or hanger thread stripped?

Having some issue with my SRAM X01 Eagle rear derailleur mounting to the frame idk it won't bolt in with my torque wrench it's very loose? When it comes to drivetrain stuff I'm not experienced enough ...
0
votes
1answer
59 views

How to remove stuck Shimano Hollow-Tech bottom bracket cups?

When I tried to remove the bottom bracket bearing cups using the BB tool it was very hard to move or it's just stuck. Tried WD40 then slowly tapping the tool using a mallet didn't work. To cut the ...
1
vote
4answers
109 views

Shifting from a Tiagra BB to an Ultegra or Dura Ace BB?

So after about 10,000 miles with my bike I bought in 2015 the bottom brackets have had enough. I need to switch them out, and considering they're quite cheap in retail and also does a lot of the heavy ...
0
votes
0answers
36 views

Measure capacity of Lithium by Coulomb counter method while charging [migrated]

I'm learning to design a module to measure capacity (percent left) of ebike Lithium battery. Lithium cell ' specifications are 48V-13Ah, it's built from cell pin 18650- 2600mAh. I choose the Coulomb ...
0
votes
2answers
87 views

Remove crankset when no bolts visible

I'm sure this is a very common question, but I need to remove the pedals and crank from a CCM mountain bike frame - however, the pedals have no obvious bolts - the pedal arms simply bend 90 degrees ...
1
vote
0answers
89 views

Seat clamp slid the seat down as I was riding, hurt my knees [closed]

So I was riding a community shared bicycle that many city's have that you can ride around for a small fee. While I was riding it, the seat clamp must have been loose and the seat was sliding down ...
3
votes
1answer
44 views

Okay to use new KMC master link on old KMC 11spd chain?

I took my 11spd KMC bike chain off a few days ago to give it a good cleaning and re-mounted it to the drivetrain using a master link and park tool master link pliers. I must have not set it correctly ...
1
vote
1answer
60 views

KMC chain disconnection issue

I'm trying to replace my rear derailleur on my cheap MTB. Chain is a KMC with a Z and NARROW on it. There's no master link so I bought a tool but i can't get it to push a pin out. Are the pins one ...
2
votes
1answer
96 views

What bottom bracket do I have

What type of bottom bracket do I have? I'm looking for a video on how to service my bottom bracket but I'm not sure what type I have. I have a Cannondale CAAD8 from 2011 with a Shimano 105 groupset. ...
3
votes
1answer
139 views

JIS and ISO square taper

I've read Sheldon Brown's page on JIS and ISO and have read exchanges in forums about the pros and cons of using ISO cranks on JIS bottom brackets. If my understanding is correct, these standards ...
5
votes
4answers
131 views

Multi-city bike rental in Europe (NL, BE)

I'm considering a bike trip in Europe, primarily the Netherlands, over a week or two. But I'd rather rent a bike (in fact, two) than bring mine all the way from Australia. Are there any options for '...

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