1
vote
1answer
117 views

diference between 170mm 172mm 175mm crank arm length on road bike [duplicate]

What is best for which use, advantage, or application, especially for climbing.
1
vote
1answer
219 views

Will an innertube for 700x35c-44c be ok for a bike that says it needs size 700x45c?

I need to replace my innertube and took a photo of the tyre mark to show the guy in the bike shop for the size. It says 700 x 45c. I bought the innertube he gave me based on this and only checked the ...
0
votes
0answers
61 views

Shimano Tiagra Rear Derailleur - Barrel Adjuster Won't Screw In

My rear derailleur barrel adjuster has unscrewed completely and now I can't get it back in. Is it likely that I've damaged something here, or is there some special technique to screw in barrel ...
2
votes
0answers
52 views

My BionX system won't work in assistance mode, and makes a weird noise

I've had to remove and reinstall my rear wheel because of a flat, and now the BionX system has stopped working correctly. When I turn it on, it works fine, and the regenerative breaking works fine. A ...
1
vote
3answers
119 views

Traveling road bikes that disassemble

I did a ride with a guy who had a bike like this http://www.sandsmachine.com/a_rod_r2.htm It was a regular road bike (Allow) that you could disassemble and fit in a case slightly larger than the ...
0
votes
2answers
87 views

White bike components

I would like to simplify the colors on my bike using white on components above the top-tube (saddle, seatpost, stem, cyclocross brake lever, LED lights, grips). I am having a hard time finding a ...
5
votes
3answers
216 views

How can you identify if a Shimano rear derailleur is medium or long cage?

I have a 2013 Shimano XT rear derailleur. It is part of a 2x10 drivetrain. How can I find out if it is a medium or a long cage one? The picture below shows the derailleur.
1
vote
3answers
119 views

Replacing bottom bracket on 98 trek 820

I'm trying to replace the bottom bracket assembly on my 98' trek 820. The current one grinds and needs replacement. The bracket that came in it is a shimano bb-ct92. I've looked online and can't ...
1
vote
2answers
126 views

Need help with putting together a mountain bike [closed]

I am thinking about building a new mountain bike but I'm not really sure what I need. I found a used Giant Anthem Advanced Carbon Mountain Bike Frame and I want to put disc brakes and Fox shocks on ...
2
votes
1answer
151 views

Homemade Tubeless Tires

As I was browsing Youtube for cycling related videos, this one on making your own tubeless setup caught my eye. The procedure is essentially as follows: Clean a standard rim (not for tubeless ...
1
vote
2answers
170 views

Advice for getting Campagnolo Zonda wheelset on a 2000 8 speed shimano rsx

So I have an old road bike and instead of coughing up cash for new one I've decided to just start upgrading parts now and slowly build a better custom bike, one piece at a time. My bike currently ...
6
votes
2answers
148 views

Need a method to wrap H-bars with handlebar tape

I've gotten good at wrapping drop bars, using conventional cork tape: You start at the end and work your way up, keeping the tension even and watching the overlap, and it works perfectly for me. But ...
0
votes
0answers
53 views

SRAM Red 22 crankset & 10 speed cassette

I have a 2010 SRAM Red 10 speed groupset on my bike, and I have just changed the front crankset to the latest SRAM Red 22 compact; I will also add a new KMC KMC X10SL chain. The Front derailleur no ...
3
votes
2answers
195 views

Why do my handlebars wobble left and right?

I got this bike secondhand, and so I don't know its history/what could have made it like that. And I mean they wobble while I'm holding them, not while I'm riding hands-free only. I've ridden a few ...
5
votes
1answer
164 views

Carbon fiber chip

See the white mid picture in the shape of a canine tooth. The sticker / veneer came off / separated. Is it something I should worry about? Is there something I can do? Niner Air Nine Carbon. I ...
4
votes
2answers
171 views

replaced tire, now wheel flexes side to side

I have an 85 Raleigh that until yesterday had never had its rear tire replaced over the life of the bicycle. Before I replaced it, the wheel seemed fairly stiff. I don't know if the old tire was so ...
0
votes
1answer
42 views

Changing one of the chainrings on SR Suntour NEX crank?

I have a SR Suntour NEX (42x34x24) crankset and got my system really bad recently. But as I've used the second (34) chainring most of all I would like to replace only this one. Is it okay? Does my ...
1
vote
2answers
94 views

Can I use a Shimano 105 10 speed BCD 130mm 52t chainring as a replacement in my 9 speed tiagra triple crankset?

I currently run Tiagra triple 9 speed crank, 50/39/30 The BCD on the 50 being 130mm. I'd like to replace the 50t with a 52t to make it 52/39/30. I'm looking at a Shimano 105 52t chainring but it says ...
4
votes
2answers
606 views

How can I keep spiders and other bugs off my bicycle?

I am an extreme arachnophobe, to the point that I've left dishes in the sink due to a dead spider the size of an M&M. My bike at work is right in the open, and because of the soft winter, there ...
0
votes
1answer
116 views

Massive and sudden increase in heart rate and vomiting after when cycling [closed]

The heart thing has happened a few times before, and the vomiting only once; but I haven't cycled in about a year and am getting back into it. I used to be a gymnast and did pretty extreme ...
1
vote
2answers
78 views

Adjusting disk brake positions

I recently got a new bike (below). It's rather latest technology for me. I got it assembled from a supermarket, but had to do almost all the adjustments myself. I don't know what I did wrong with ...
1
vote
1answer
52 views

Change Shimano FC-M431 Octalink crank arms to Shimano SLX

I won a good deal for a Shimano 2012 SLX FC-M660 set, excluding bottom bracket and crank bolt. Is there any chance I can upgrade my touring bikes FC-M431 Octalink somehow without changing the chain ...
0
votes
1answer
72 views

Choosing hubs and rims for training road wheels

I'm going to build a training road wheelset for my touring bike. I wonder what should be criteria for choosing hubs and rims and spokes. I'd prefer cheaper options as long as they are durable and not ...
3
votes
6answers
164 views

Quick Release on Fixed Gear Bike

I recently purchased a fixed gear bike, Kilo TT. I had some fenders lying around, SKS raceblade. I tried to install them on my bikebut noticed that the fenders attached to the skewers. My fixed gear ...
3
votes
3answers
115 views

Small Tear in Michelin Pro4 Tire, Does It Need To Be Replaced?

Got back from a bike ride and noticed a small tear on the sidewall of my tire. I'm wondering if I can just seal it with some Goo Gone or do I need to replace the tire. I do have spares lying around so ...
0
votes
0answers
22 views

How to switch from a double to triple crankset [duplicate]

What do I need to change out on a bike to move from a double to a triple crankset? In this particular situation the bike has STI shifters and a FSA Gossamer, 50/34 teeth crankset currently. But I ...
3
votes
1answer
172 views

Definition of a bunny hop

In this answer, Mσᶎ mentioned a bunny hop. I agreed, and wrote about How to Bunny Hop. But it soon became clear that different people have slightly different definitions of a bunny hop. For example, ...
7
votes
2answers
283 views

Do I need to patch my tubed-tire if I have a puncture?

I have about a 2 mm gash around the outside of my tire from a piece of brown glass. It gave me a slow leak and while I've patched the tube, do I need to do anything about the tire itself?
1
vote
0answers
47 views

How can I fix my rear derailleur's B-tension adjustment?

I've noticed that my rear derailleur (Ultegra 6700) will not return to where I've set the B-tension adjustment. Pulling it away from the hanger means it will just stick there, or maybe move back a ...
0
votes
0answers
28 views

How Big is my Wheel Circumference? [duplicate]

I'm very new to road biking and struggling to set up my cycle computer on my Triban 500 SE.. Manufacturing Info about bike here : ...
21
votes
7answers
2k views

Is there a way to hop up onto a parallel curb?

The scenario: you're riding in a curb-adjacent, paint-only bike lane. You happen to look over your shoulder (or in your mirror) and see a vehicle approaching from behind, either fully in the bike ...
3
votes
2answers
61 views

Replace asymmetrical BB with symmetrical cartridge and spacers?

My bike has a square taper 68mm width cup and cone bottom bracket that is wearing out. I was hoping to replace it with a sealed cartridge (shimano UN55 or similar) but then I found that the spindle ...
2
votes
1answer
86 views

Why is it important to keep bearing sets when greasing a campagnolo hub?

In almost all cases where hubs are regularly serviced, bearings don't need to be replaced. The general consensus though is to replace bearings after so many thousands of kms. Many posts on the web say ...
2
votes
3answers
120 views

Rear wheel rubs frame after tire change

I recently changed the rear tire and paid no attention to the original working state of the rear derailleur. After a miserable attempt at resembling, I lost what I now think was the Derailleur bolt ...
2
votes
0answers
46 views

Why does coaster brake hub growl when coasting but not when braking or pedaling?

I have an old two-seater recumbent trike with coaster brakes. One of the rear hubs rumbles terribly when the bike is coasting. When the brake is on, or when pedaling, it doesn't make a noise. I assume ...
11
votes
5answers
2k views

What are the downsides of a twisted wheel?

After a collision where somebody fell on me, my front wheel is twisted to the point that it slightly touches the brake once per revolution causing a soft screech. Logistically, I can't get to the shop ...
3
votes
1answer
113 views

Chain Splitter vs. Chain Tool vs. Chain Breaker

What is the difference between a Chain Splitter and a Chain Tool and a Chain Breaker? Are they the same thing?
0
votes
0answers
27 views

Can I upgrade V-brake to disk brake for Cannondale Quick Cx 5 [duplicate]

I have a Cannondale Quick Cx5 with V brake. I'm wondering whether I can upgrade to disk brake?
3
votes
2answers
691 views

Can disc brakes be considered safe for road group rides?

I know aero bars are considered unsafe for peloton, does this extend to disc brakes whose rotors can be hot and sharp? I'm not talking about races, just casual training rides: is it reasonably safe ...
1
vote
2answers
90 views

What is the maximum safe storage temperature for a bike?

I like to keep my bike in the car on days I drive to work, in case I need it to get to a meeting in another building. However, I'm concerned that it gets too hot some days. Is there a temperature at ...
2
votes
1answer
71 views

Rat a Tat noises coming from my bottom bracket area. Please help!

I recently got my single speed frame and forks powder coated and at the same time had a number of parts replaced - bottom bracket, chain ring, chain and freewheel cassette. Really please with ...
3
votes
1answer
219 views

What is this apparatus for?

I saw this post by Ji Cheng (Lanterne Rouge) on Twitter. My question is about the apparatus he posts a picture of. It contains (his?) shoes. Simple question, what is this machine exactly doing? Is it ...
0
votes
0answers
21 views

cantilever brakes have 1mm play in then is this normal? [duplicate]

My cantilever brakes have roughly 1mm movement in them and can be moved backwards and forwards very easily by hand. Is this because the shoulder bolt is too long or should the setup have some extra ...
1
vote
0answers
50 views

Pedals turn but front sprocket does not [duplicate]

My Mountain Bike ,about ten years old,Three (3) sprockets in front. It backpedals (whizzz) But when I go to pedal there is no engagement - Pedals turn but sprockets don't move..But sprockets move when ...
3
votes
1answer
84 views

Decoding internal gear specs

I am looking at a bike which describes the gears as: 3 speed internal geared hub, 42t front and 16t rear gearing. What does the latter spec (42t/16t) describe?
2
votes
3answers
167 views

Why are aero bars usually disallowed in gran fondos?

Why are aero bars usually disallowed in Gran Fondos (cyclosportive events)? I'm just curious. I would think it would be a useful piece of equipment when riding 100.
1
vote
2answers
44 views

Sticky / broken floor pump head?

I have a Nashbar floor pump with an automatic Presta/Schrader head. The valve holes are on one side of the head and the air is supposed to switch to the hole with the valve inserted. It used to work ...
1
vote
1answer
87 views

Chain Slipping?

I am not the most knowledgeable when it comes to bikes so please bear with me. I have a Claud Butler and after fixing a puncture I decided to ride it. As I was riding, I could hear a sort of rattling ...
2
votes
1answer
84 views

Is it a good idea to sand off the rotor when exchanging disc brake pads?

During operation, disc brake pads cut grooves into the rotor. When replacing the pads with new ones, would it be a good idea to smoothen the rotor with sandpaper(e.g. grit 200 then grit 800)? What is ...
0
votes
1answer
31 views

Quick-release seat slipping down [duplicate]

My bike's quick release seat has been slipping down recently. I noticed when my (pro) biker friend remarked how low down the seat on my bike was, and helpfully readjusted it for me. Biking became ...

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