0
votes
1answer
15 views

Upgrading a heavy duty bike

I have been using my bike for roundabout 10 years for daily commuting and occasional travelling. It is a "trekking cycle" with a straight handle bar. I use it mostly in the plane, i.e. on streets and ...
0
votes
0answers
25 views

What is the handlebar size for an old road bike?

I have a 1980 Fuji America 18 speed road bike that needs to have the handlebar replaced. How do I determine the handlebar size? It appears that 26mm is the common size for older road bikes - but I ...
0
votes
1answer
35 views

How to avoid getting swindled when buying used cranks?

I'm looking for a cheap, used set of cranks for a bike that was fished out of the garbage :) Because the cranks won't be on a bicycle when I go buy them, how can I tell if they're bent or not? I'm ...
0
votes
1answer
68 views

How much assembly is required when an LBS orders a bike?

I'm looking to order a Marin Lombard Elite from my LBS but I want to replace the FSA BB and crankset with Shimano or SRAM parts, and change to a 52/36. When my LBS orders it, does all of that come ...
0
votes
1answer
21 views

Can any MTB rear derailleur be mounted to a Scott type 1 MTB derailleur hanger?

Can any Shimano MTB rear derailleur be mounted to a type 1 (206375) Scott derailleur hanger. I have a type 1 derailleur hanger with a Shimano STX rear derailleur mounted and like to mount a Shimano ...
1
vote
0answers
25 views

Using PTFE spray on rear derailleur springs

Have noticed that the rear derailleur springs and pulleys are picking up lots of road gunk. I use a wax for the chain and as this breaks off I can see it getting stuck on the pulleys. So after ...
0
votes
1answer
22 views

Can't shift front gear, despite loosening, tightening, etc. What could be wrong?

Disclaimer: I'm clueless and am piecing together what little information I know from reading this site and from watching YouTube 'intro to repair' videos. I've been gifted a used mountain bike, my ...
1
vote
2answers
45 views

Lactate feeling

Something i noticed on my climbs is that i really struggle the first 4 5 km. I feel very uncomfortable and at some point its like my body gets used to the lactate. It's like a switch. I can ride ...
0
votes
1answer
48 views

Fixie chain stuck between cog and hub

I had my chain jump off on my fixed gear when I hit a pothole, and it's gotten completely wedged between the cog and the flange of the hub. I've removed the lockring but can't get a chain whip around ...
2
votes
6answers
143 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 ...
2
votes
1answer
32 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
32 views

Ultegra 6800 VS 6870 Di2 [on hold]

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
58 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 ...
2
votes
0answers
30 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
766 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
63 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? Update: 7.5cm less, is it ...
0
votes
1answer
29 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
50 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
35 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
68 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
37 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
72 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
1answer
42 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
29 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
31 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
35 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
94 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
71 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
47 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
603 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
31 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
62 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
48 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
83 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
70 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
123 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
84 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
44 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
42 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
64 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
88 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
40 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
15 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
325 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
80 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?

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