0
votes
1answer
12 views

Why bother changing a chain?

I have heard often that you should replace a worn chain, that a chain lasts somewhere between 800-1200 miles, and that if you don't replace the chain on time, you'll need to replace the cassette when ...
1
vote
0answers
12 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
0answers
9 views

Ultegra 6800 VS 6870 Di2

I'm currently using Ultegra 6800 and I'm happy. However, due to the cable slack or weather change, etc., I need to adjust the derailleurs. Mostly, it's a minor adjustment, but sill it's annoying. ...
3
votes
1answer
41 views

Is there an advantage to a chaincase where the chain rubs the bottom of the case?

I was about to buy this bike (a Gazelle Aroyo c7): http://www.gazelle-fietsen.be/assortiment/arroyo-c7 when I realized the chaincase is seemingly deliberately designed so that the chain constantly ...
1
vote
0answers
20 views

Why is my electric bike 'clanking' under load?

I have a Giant Esprit Twist Power electric bike, which apart from not having nearly enough words in its name also has a problem related to the crank. When I put a lot of load through the pedals there ...
6
votes
2answers
523 views

Why are chains sold in fixed lengths rather than by the meter?

Why can't we purchase chain by the meter, in any length, instead of in fixed lengths? Then the chain could be cut to the exact length required, unlike current situation of throwing away several links. ...
2
votes
2answers
43 views

Rear derailleur cable housing length

I've cut my first cable housing using this ParkTool page as a guide. The thing is, I think it's a bit too long. Can I safely shorten it or the length is good as it is now?
0
votes
1answer
24 views

Front wheel Fork is having scratches and Oil is getting leaked from it?

I thought that it might be a fault of Oil seal but Mechanic was telling that I have to replace both the fork If I replace only the Oil & Oil seal then again It will leak oil. Is it a dangerous ...
0
votes
1answer
37 views

What is the cause of earlier rear wheel lock-ups in the wet?

I have faith in Sheldon and Jobst's arguments about hydroplaning. I do not understand the action of a wheel locking up (entering a skid), other than the intuitive level of braking ~> locks up / ...
1
vote
1answer
32 views

Tyre size and Turbo Trainers

Are there any advantages in having a 700x25 tyre over a 700x23 when using a cycle trainer? If you are "training", resistance is surely not a huge deal breaker. I assume cycle trainer tyres last a ...
3
votes
2answers
61 views

Converting from square spline to external bearings, what do I need to know?

I need to replace the entire drivetrain on my circa 2000 MTB commuter. Quality groupsets all seem to use external bearings these days. Replacing my current cartridge bottom bracket for a modern ...
0
votes
0answers
26 views

Is BMC PRO MACHINE SLC01 2009 compatible with Ultegra Di2?

Currently I have Ultegra 6800, but I want to upgrade it with Ultegra Di2. My frame (BMC PRO MACHINE SLC01 2009) compatible with Di2?
2
votes
0answers
34 views

Does a Sturmey Archer 2 speed kick shift hub let you backpedal?

Does a Sturmey Archer 2 speed kick shift hub let you backpedal? A backpedal / coaster brake changes riding technique so much it drives me nuts; I am wondering if you can backpedal at least enough to ...
0
votes
2answers
67 views

Will electric heaters degrade bicycle tires?

Is it safe to store bicycle tires near electric heaters? I'm wondering if the heat will degrade the rubber somehow. More specifically, I'd like to store my bike near the electric baseboard heaters ...
0
votes
0answers
28 views

Which bottom bracket do I need to replace crank on a Trek FX 7.1?

I have a Trek FX 7.1 that I've rode for several years now and replaced parts as they've worn out. Now I'd like to upgrade the whole drive train with Tiagra 2x10 flat bar shifters, derailleurs, crank, ...
0
votes
0answers
28 views

How does the seatpost binder bolt work on a Vanmoof?

Vanmoof bicycles have the seatpost binder bolt/mechanism that is hidden inside the top tube. Does anyone know how it works? Does it have a way of preventing water from getting into the frame from ...
0
votes
0answers
29 views

How durable are the lights on a Vanmoof?

Can anyone report on how durable the philips lights built into the frame of a Vanmoof city bike are? I can't tell if being (partially) inside the top tube will protect them, or make them more ...
0
votes
1answer
31 views

What kind of brake pads for Dia Compe centre pull brakes

I have some Dia Compe center pull brakes shown below. I was wondering what the best type of brake pads are to use for these brakes. Looking around at pictures on the internet, many people use ...
1
vote
1answer
28 views

Can I convert my velocity 9-speed rear road hub to bolt-on?

I have an older velocity wheelset with their standard 9-speed road hubs. Can I convert these hubs (particularly the rear hub) to bolt on?
2
votes
1answer
91 views

Lots of chain slack… Time for a new chain? Bad derailluer?

I got home from a short ride up the street today where there was a lot of clicking and skipping of chain links and when I got home I realized my chain had a ton of slack. After looking around on the ...
0
votes
2answers
68 views

Face gets extremely red when biking in the cold ~5c, and then going indoors, due to temperature change maybe

Face gets extremely red when biking in the cold ~5c, and then going indoors, due to temperature change maybe. What can you wear when biking to prevent this problem, and could you link to a site? ...
0
votes
0answers
46 views

Preventing red eyes after biking

When biking, your eyes get red. Guessing due to dryness. Usually, people wear sunglasses or glasses to block out the wind. Wearing them didn't help. Still red. Maybe more red if you weren't wearing ...
8
votes
3answers
595 views

How are those plastic rings used?

The things on the lower right corner. I have a bunch and don't know what are they used for: What are those plastic thingies called? What are thy used for? How are they applied? How important are ...
0
votes
1answer
30 views

Upgrading From Shimano 8 Sp Alivio To Shimano 9 Sp Altus

I have an old giant warp D's 2 bike that's about 10 years old. I've maintained it and it still rides good and looks just as good. I wanted to upgrade from the old alivio 8 speed drivetrain to either a ...
0
votes
1answer
59 views

Mongoose stamped vs. unstamped

What's the difference between a Mongoose that has logo stamped on frame and a Mongoose with no stamp on it?
0
votes
0answers
47 views

Unknown bike frame stamp [on hold]

I have a bmx frame with the only identifiable stamp on it is the letter "m" on it besides the sn# on bottom of cranks. Can anyone help? Would post picture but not sure how.
1
vote
3answers
80 views

Broken Key/Lock

I have a Kryptonite U-lock and my key doesn't seem to be working, I'm not sure if the key is broken or the U-lock. How do I unlock my bike? Kryptonite isn't open and both the key and lock worked an ...
2
votes
0answers
69 views

9x4 spoke pattern

I am shopping around for a high end commuting bike. Several reputable manufacturers, including Batavus and Trek are using rims with 9x4 spoke hole pattern. Here are a couple examples: ...
0
votes
4answers
120 views

Air Pressure on wheels [on hold]

Does the perfect air pressure is related to the performance of bikes? If yes, what is the exact amount of pressure required on MTB, Hybrid, City Bikes and BMX?
2
votes
2answers
79 views

Adding front derailleur vs upgrading the rear one on a (ladies) bicycle

What I want to achieve is going from having some gears to having more gears. To be more specific I would like to get more gear ratio range in both low and high end. First of all I tried to look for ...
1
vote
1answer
43 views

Having the fork blades aligned

I got a classic steel road bike, gazelle tour de France, and one of the fork blades was bent in the frame direction, some two centimetres, after a crash. I read here that this can be realigned, I'd ...
0
votes
1answer
41 views

Can't shift to gear one or two

I had an issue where every time I put my bike in gear 3, it would just keep "skipping". By this I mean that it wouldn't stay in gear 3; the chain would go onto it, then fall onto gear 4, then go back ...
0
votes
1answer
62 views

Specialized Rock Hopper (1987) - Service

I was wondering if anyone might have a service manual of some description for a vintage Specialized Rock Hopper(1987 - Yellow)? I have googled this for hours and hours and have tried contacting ...
0
votes
1answer
29 views

Torque for front caliper bolt. [duplicate]

What's the recommended torque of the front caliper bolt for a carbon fork? The Fork is from a Felt F1. I don't want to damage the fork from over thightening.
0
votes
1answer
75 views

I don't know what it is [closed]

The body is white and there is a sign that has a HH on it and my grips say that it is a wethepeople . The rims are titanium blue , the handle bars are gray,and the forks are to
2
votes
1answer
85 views

What does this rod inside the my american classic seat post do?

I've got an american classic seatpost. I bought it used, and wasn't sure how to properly adjust it initially. I found the bolt on the bottom clamps the seat down. The bolt on the rear underside ...
0
votes
0answers
39 views

Replacement crankset for Shimano SG B 52/39?

I have a very basic Specialized Allez (XL frame) street bike (pictured in my avatar) with a cheap SG B52/39 chainring needing replacement (warped and wearing out after two years of daily use). But ...
0
votes
0answers
14 views

Cone size for Shimano Type D on Schwinn Cruiser

What size wrench do I need for the rear hub on my Schwinn cruiser? It is a Shimano Type D. Also, what grease is recommended that I might be able to by locally. Thanks to all.
2
votes
1answer
77 views

How to remove existing fluid before bleeding disk brake

I've found lots of tutorials on how to bleed the disk brakes. And in all of them there is nothing about removing existing fluid. I'm quite afraid that when I start to bleed brakes the existing fluid ...
7
votes
2answers
321 views

What is the purpose of this small block on the handlebar?

What is the purpose of this small block on a handlebar? This article on "bicycle archeology" (in Dutch) describes that they have almost completely disappeared, and are found only on very old ...
1
vote
2answers
74 views

Help for wind noise

Does anyone in the forum have experience with anything that can block the noise of wind that doesn't look like I have fur growing out of my ears?
0
votes
1answer
44 views

why does my knee feel numb when riding [closed]

My left knee just under and around the knee cap gets a numb cold feeling when peddling. There is some dull pain associated with it. Any idea what this could be?
0
votes
1answer
36 views

SRAM xx1 1 x 11 drive train very noisey

I have a 1 x 11 setup on my mtn bike. This is stock from the factory, it wasn't a conversion. When Im in the granny gear climbing, there is a lot of chain/derailer noise. It gets more noticeable ...
0
votes
0answers
41 views

Hearth rate during training on a skiing machine [closed]

I am 24 years old male. I weigh 83 kilos 175 cm. I usually ride my bike outside and never used a heart monitor. The other day i went to the gym and hit the skiing machine. I noticed that my heart rate ...
1
vote
3answers
160 views

Disadvantage of Hybrid Bikes on Mountains

Everybody know that Hybrid bike can be used for mountain cycling. But I want to know what are the disadvantages if we do so? And what are disadvantages of using mountain bikes in cities.
1
vote
2answers
114 views

3 flats in 650 miles (1030 km) on hybrid bike. Tire pressure wrong?

I have a Giant hybrid (with 700x32c 65 PSI tires), stock tires, that I mainly ride on nice roads to and from work ~3.5 km/2.2 miles each way. I weigh 230 lbs/104 kg up from 200 lbs when I bought the ...
3
votes
3answers
126 views

When truing a wheel, is it enough to only use a tension meter, and not a truing stand?

I presume that if you get all spoke tensions equal, and at the recommended tension for the spoke thickness, then the wheel will be true. My intention is to get a wheel reasonably true (laterally) by ...
3
votes
6answers
119 views

I sit real far back on my saddle

Asked this on diaspora, but was urged to come here, so, here's my question: I tend to slide BACK on my saddle really far, to the point where my sit bones are very near to the edge. If I try to scoot ...
1
vote
2answers
46 views

Can a 7 speed Derailleur work on a 8 speed cassette

Can a 7 speed Derailleur work on a 8 speed cassette I have a extra 8 speed shifters? and a wheel that has a 8 speed cassette.
0
votes
4answers
98 views

Clothing: when should we wear what, are there any guidelines/conventions?

I regularly cycle to work in London, at the moment the weather is between 5-9 degrees Celsius. I'm finding it difficult to decide what to wear in these conditions as I either get too much windchill ...

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