6
votes
3answers
233 views

Why are derailleur jockey wheels commonly made of nylon?

Almost all derailleurs seem to come from the factory with nylon jockey wheels . What is the rationale for the use of nylon (rather than alloy or aluminum)? Is it merely weight savings (which would ...
0
votes
4answers
121 views

Derailleur/Gears Locks Up/ Freezes Up/Stalls

Hey guys I have a specialized mtb with the old oval chainrings and lately it's been locking up. When I start pedalling "hard" or faster the crank stops turning and then jumps forward a bit and ...
1
vote
1answer
47 views

DIY Bamboo bike? [duplicate]

I am wondering whether or not I can build my own bike. I was thinking of buying some steel lugs or maybe carbon ones or whatever off the internet, and a steerer tube too, and was hoping I could ...
0
votes
0answers
37 views

Bosch Nyon range estimates are unreliable

I have a Bosch Nyon computer and after charging the battery I very often get a range (in eco) of +/- 230, 220 km which is adjusted downwards by 1/3 after 1 km. When I don't have this high range after ...
0
votes
1answer
86 views

Shifter clicks in but chain stays on the largest cog, when riding

I am able to change (click through) the shifter but the chain stays on the largest cog and does not move (This happens only when riding) but the gears shift as usual when the bike is stationary and I ...
4
votes
1answer
48 views

what are good training program for offroad racing?

I am just getting into racing, and like offroad more. I'm also a runner so I'm used to training programs. I wondered are there any of these for bike racing, and specifically offroad?
4
votes
2answers
233 views

Can I 'toe in' these cantilever brake pads?

I'm riding a new bike (new to me) and I am unfamiliar riding with some of the components, specifically the cantilever cross brakes. On my road bike, I toe in the brake pads to help with noise, feel, ...
3
votes
2answers
148 views

Why is this ring used near the Crankset?

I couldn't comprehend, why this ring is needed. Please refer the pictures. Its a road bike (I am not sure if it matters or not, so felt like mentioning it). In my Bicycle, this ring usually comes ...
3
votes
5answers
121 views

Are there permanently mounted bike computers?

Over the years I've owned multiple bike computers (whose things that tell your speed/distance). Each time the head either falls off while I'm riding or I remove it, but lose it somewhere. I want my ...
11
votes
5answers
2k views

Protecting bike attachments such as lights against theft

I was wondering what one could do to keep his bike attachments from being stolen. On Monday two lights were stolen off of my bike. I only had them for a day. It was the kind that has a rubber "strap" ...
2
votes
1answer
75 views

Can I fit larger rotors on a Surly Karate Monkey fork?

I have a Surly Karate Monkey fork that has 160mm rotors. I'd like to upgrade to Clarks M2 brakes with 180mm rotors. How can I tell if those calipers/rotors will fit my fork?
1
vote
1answer
77 views

why does my front suspension have no spring or air valve

I am riding a old rally mtb the fork is a xc100 , I can find no mention of these online, and it has never a spring nor a air chamber to make the suspension work. it is recently began to stop working ...
2
votes
1answer
71 views

What is this cogset body?

I have some backlash (free movement) in my body of cogset, so I try to dissemble my cogset to discover this weird body: I'm trying to find a new one but I don't know how to call it. Any idea how ...
2
votes
1answer
86 views

Is it 'safe' to use a 700 x 47c tyre on a rim with inner width of 15mm?

Looking to upgrade my tyres on an old roadie mash up to something chunkier so I can handle some off road sections on a ride coming up, currently it has a 27 x 1 1/4 front tyre and a 27 x 1 3/8 rear ...
2
votes
2answers
207 views

How to assemble bike chain with no Master link?

I just bought a KMC chain on Amazon, and to my surprise, it didn't come with any kind of master link or connecting pin. I thought this was standard. So, did I just forget to order the part, or can you ...
11
votes
5answers
3k views

Legs are very weak

So, I've been riding at different levels of difficulty for years now, from a 33lb, one gear bmx to a 21 speed, 44lb mountain bike, and now to a 22lb, 21 speed road bike. Each bike had its own ...
3
votes
4answers
779 views

Bicycle's inner-tube got puncture right next to the valve, How to patch it there?

There is a very small cut 1-2 millimeter or less long in the inner-tube, right next to where it's the bottom of the Schrader valve. The cut is only 1-2 millimeters far away from the valve's bottom. ...
7
votes
2answers
2k views

Why am I getting no power when I pedal?

EDIT. Based on comments I'm adding these facts which I should have originally stated. The chain was definitely on the sprockets and moving. I could change gears no problem while I had no power. END ...
0
votes
1answer
148 views

Is there a specific cyclocross wheel?

If you want some versatility regarding a bike (I have a Fuji sportif) what sort of wheels should I be looking into? I know there is some technicalities regarding road vs cx riding but if the bike can ...
4
votes
3answers
171 views

Could I use a 30 tooth chainring with my current crankset?

a few months back I installed a 34 tooth narrow-wide chainring in my Santa Cruz Bronson. I decided to install the 34 tooth chainring, basically, because I couldn't fit any other smaller chainring ...
2
votes
1answer
50 views

Separating the gear hanger from the derailleur

I am trying to exchange my rear derailleur. Now I have the problem of detaching it from the hanger, as you can see in the attached image, I was able to detach the gear hanger from the frame, but I ...
2
votes
1answer
101 views

Do calorie estimates for rides include Basal Metabloic Rate?

It looks like I burn 100 Calories per hour on average. Do activity trackers report the extra burn due to the activity, or the total including the base. To put it in other terms, if it says 800 kcal ...
2
votes
1answer
146 views

I messed up my bike

My bike is messed up. It is the type of bike where you can not pedal backwards, like the old bikes that would brake when you pedal backwards not forwards.. However, it has 3 gears. I was riding it and ...
1
vote
1answer
86 views

MTB Tyre Safe for Wet Roads

I ride %50 on road, %50 XC. When the roads are wet/rainy the bike dances with me. Thus, i want to change the tyres. What I want is safe (in especially wet/rainy conditions) drive both on-road and ...
0
votes
2answers
128 views

Future of Tire technology

Why do tire producing companies still produce tubulars? Isn`t Tubeless the technology of the future?
4
votes
3answers
420 views

Does a brand-new bike bought online need a service before riding it?

I bought a brand-new road bike from a website. The bike was preassembled and delivered in a big box. The only things I had do were: - remove the styrofoam wrappings - screw on the pedals - ...
1
vote
1answer
86 views

Storing bicycle in a shed for the winter [duplicate]

I am living in Canada and it is the sad time of the year where I have to stop riding and store my bicycle for the winter. This summer I acquired a full carbon bike and I want to make sure it stays ...
1
vote
1answer
53 views

Replace a 2.0“ tyre with a 2.1” studded one?

I'm looking at replacing the tires on my GT Aggressor commuter bike with studded tires for the winter. Based on the current tire sidewalls (the rims themselves don't actually have the width or ...
10
votes
5answers
1k views

Did I choose the wrong size bike?

I don't know much about bicycles, and I have relatively little experience with them. I bike for fun, or to get around the city, not for sport. Recently I bought a BTWIN Rockrider 340 mountain bike, ...
2
votes
3answers
170 views

Do you know of tubes that are fully flat-proof?

I am looking into whether there are inner tubes that are fully flat proof. Do you know how much they would affect performance and comfort?
1
vote
1answer
56 views

New Shimano TX55 Not Shifting

I am having a problem with my rear derailleur. I installed as per instructions, adjusting the H and L limits to what I believe is proper. The problem I am having is that when I am in 7th gear, ...
5
votes
2answers
107 views

Typical Torque Values For Bicycles

I'm thinking of getting a torque wrench (or something similar) for working on bikes. The ones I have for cars are pretty ungainly and I think I'd be at the low end of the range where they aren't too ...
2
votes
2answers
448 views

Are CO2 cartridges feasable for use on fat bike tires?

Are CO2 or other portable cartridge style devices feasible for use on fat bikes with tires 26x4.5" or greater? I know there are large 20g or 40g cylinders available? If so, what sizes of cartridges ...
2
votes
1answer
45 views

Bar diameter for Genesis Croix de fer 20 (2015)

I would like to switch my stem for angle adjustable one and I am having trouble identifying the clamp size for the Gensis, Croix de Fer 20 (2015). I do not see the stem/bar clamp spec listed. There ...
3
votes
1answer
67 views

Are HV/HP switchable pumps as capable as a specific HP or HV pump?

There are generally two big specialties for pumps. High Pressure (HP) or High Volume (HV). I ride Fat bikes, mountain bikes and road bikes, so I'm confused about buying a new pump to carry while on ...
5
votes
2answers
137 views

Is my pump faulty or my tyre?

I have recently bought a Specialized women's road bike and for the last couple of weeks was borrowing my boyfriend's hand pump with no real issues. Last night I finally purchased my own (Topeak ...
5
votes
5answers
352 views

How to cut a brake/derailleur cable?

I need to cut a cable, cleanly enough that it can be inserted in its housing. What kind of cutting tool do I need for this? I probably won't be using it more than once every few years, so cheaper ...
2
votes
2answers
52 views

How to replace derailleur cable housing?

My derailleur cable housing (sheath) has exploded: I bought a new sheath of the exact same length: PROBLEM: Now I realize that unlike brake cables that are like []------, derailleur cables seem ...
2
votes
4answers
146 views

I want to ride a bike, but its dangerous for me to have weight on my arms

I ride about 6 miles a day to work and back. I would like to ride more, but because of a bum shoulder I am increasingly getting into dangerous situations and I want to give up riding. I have a Giant ...
3
votes
1answer
118 views

Fettling issues - slow shifting rear gears while riding

I've recently had an issue with my gearing, struggling to shift down onto the last few cogs on the cassette. I've got a Shimano Ultegra 6800 groupset, but when I shift whilst riding, I get a ...
4
votes
2answers
251 views

Tire Repair / Maintenance

This question, What's the cause of the tyre cut, got me wondering if there is anything that can, or should, be done to repair small cuts in the tread of a tire. As I was looking at the damage to the ...
4
votes
1answer
285 views

What's the cause of this tyre cut?

I am using Schwalbe lugano 700*25C for commuting, it's a almost brand new tyre with less than 500km. Recently I am starting to find some cuts around 1cm on my the tyre thread. Does anyone know what's ...
4
votes
4answers
93 views

Front tire/disc brake question

Is it normal my disc rubbing with no tightened QR and to stop when I tighten it? Or it should not rubbing both times...?(Because now when I tighten the QR the disc starts rubbing in one of the pads. ...
3
votes
2answers
199 views

Should I be able to peel off a glued tire patch?

One of the things that I've noticed with the low-cost tube patch kit that I bought is that I'm able to catch an edge of the glued patch with my knife or fingernail and peel the patch off the tube like ...
3
votes
3answers
99 views

How to properly remove bearings from through-axle track hub

I am trying to learn the right way to remove bearings from a track hub. The bearings are cartridge bearings pressed into the hub. The axle has a ridge that prevents it from being removed while both ...
1
vote
0answers
89 views

I'm looking for a 700c disc fork. Integrated headset and fender eyelets [closed]

I want to upgrade my winter bike to a disc front. I cannot find a 700c integrated headset fork with disc mounts and fender eyelets. It needs to handle 35cm tires (so, yeah, a 29er fork will probably ...
-1
votes
1answer
71 views

automatic gear shifting (slack chain) when reverse pedalling

I'm quite new to bikes. Thanks to youtube I fixed some of the shifting issues I had in the front derailer and now I can shift to all the gear combinations. But I found a something strange when I'm ...
9
votes
3answers
334 views

What was the rationale for reverse brake levers?

The Porteur style of bicycle popular by newspaper delivery men in France in the 1940s-1960s had reverse brake levers, seen here in this diagram from an article from Bicycle Quarterly (the photo jpeg ...
2
votes
4answers
201 views

My bike brakes are lethal, help!

I've got an old Raleigh Winner (1980s 10 speed racer) which is perfect in almost every single way for what I need it for (I got given it free, it's very speedy and also looks cool). However, the ...
1
vote
1answer
81 views

What is the difference between a sidewalk and a mixed use path?

First off, I am normally the type to take a lane on my normal bike. However, I commute by train, and can only take a small folding bike with me. And on that thing, I am pretty slow (that also helps ...

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