2
votes
1answer
162 views

Patched inner tube helped by pressure against tire?

When I patch a tube, does it need to be in a tire to "remain fixed"? I mean: I understand an empty fixed tube will remain fixed if I keep it folded in a box... But how about with air inside? does ...
3
votes
3answers
1k views

Does rear-shock placement affect suspension characteristics?

I know that suspension type(Horst-link, Four-bar etc.) affects how a full-suspension mountain bike handles, but you can often see these same types of suspension systems used with different shock ...
1
vote
3answers
384 views

touring bicycle with roadster frame

I am from India and am planning to get a new bicycle. In India the roadster bicycles are very common, hence are cheap and easy to get. Roadsters have 28.5'' diameter wheels. Is it possible to fit 700c ...
2
votes
3answers
2k views

Shimano MF Z012 replacement Freewheel?

I need to replace my Z012 freewheel due to wear on my 12 speed road bike. I can't seem to find a replacement that matches it. The large gear has 28 teeth and the small has 13. I bought a MF-TZ20 ...
7
votes
2answers
364 views

Who has right of way at a staggered crossroad

I live in Manchester, United Kingdom. I cycle to and from work everyday. On my route there is a staggered crossroad where I have to go straight on. Above is the traffic lighted junction I have to ...
2
votes
2answers
782 views

How to tell if a bike is good before purchasing?

Say there's no sales person in a bike shop and you are just looking for bikes. The criteria would be a good bike to ride to work on side-walks(paved or smooth) and the occasional off-road on the ...
13
votes
5answers
352 views

How can I ride a bike having severe spinal disease and pain?

I am 27 years old and bound to a power chair due to severe back pain and spinal disease. I have had multiple surgeries and will soon have more. I would like to be active but I know that is nearly ...
3
votes
4answers
532 views

Is riding shirtless safe?

During the summer, I like to go for rides on trails without a shirt. Is this safe? Also, related: is it rude to other people on the trail not to wear a shirt?
3
votes
2answers
111 views

Suspension Maintenance

How often do you need to have your fork and rear shock fully serviced? My guess is that this depends on how many miles you are riding, so lets say 150 miles/ year.
3
votes
4answers
332 views

Is a custom road frame worthwhile?

I've been riding a Marin San Anselmo hybrid for some 13 years and I'd guess I've done over 7000 miles on it almost exclusively on the road (and it's not my commuting bike). I'm gradually doing more ...
2
votes
1answer
234 views

Has Shimano produced Ultegra 600 Hub Set, 32 hole?

I found this item at an online shop, but can not find infomation about this product. Anyone knows this hub set? and any review infomation available there?
3
votes
4answers
879 views

Are frame changes needed to switch groupset from Shimano to Campagnolo?

I want change the groupset on my Scott Addict R2 from Shimano to Campagnolo. Is Campagnolo fully compatible or will I need to make frame changes?
2
votes
3answers
517 views

Tips on buying a beginner mountain bike

I hope this question isn't too subjective or open-ended, but I would like to know what I should look out for when buying a beginner mountain bike. My aim is to ride off-road and downhill tracks, but ...
1
vote
3answers
988 views

Is it safe to ride with bent fork?

My bicycle went from this when I bought it: To this when I crashed (note the front fork bent where it attaches to the stem; front wheel almost touches the down tube): Update: Just looked at the ...
1
vote
3answers
376 views

Buy a new cycle or assemble new parts?

My budget is $300 - $400. I live in India. My doubt is whether, its better buying a new bike or just assemble different good company spare parts (used or new). I am very new to cycling, so please ...
-1
votes
1answer
419 views

Fork MTB clearance problem

I have a felt Nine comp. It is a 29er with rockshox forks. The clearance is poor with a continental rubber queen tyre. Is there anything I can do to increase the clearance? (we're talking 1cm, which ...
2
votes
1answer
115 views

Steel chainrings for 3x9 speed setups

I have Shimano M542 with 3 chainrings (44-32-22) for 9 speed chain. Is it possible to fit it with chainrings made of steel for better durability? I do not mind extra weight. The dimensions are 110 ...
3
votes
6answers
334 views

Feet on the middle of the pedals

I am 1,85m tall, have shoes sized 58-59 (European) and have classic non sloped frame with seat tube 55cm. Problem is that my feet land with their middle on the pedals, not with the front part where ...
5
votes
2answers
4k views

Upgrade Shimano from 9- to 10- speed

I'm thinking of upgrading the 9-speed Tiagra rear mech on one of my (road) bikes to something, still Shimano, but 10-speed. The obvious replacements I'll need are cassette, right-shifter and chain. ...
4
votes
2answers
657 views

Can I buy handlebar tape in bulk

I have a couple of commuter bikes with bullhorn handlebars. When I replace the tape on them, I always have heaps left over, since the bars are much shorter overall than standard drop bars. There's ...
6
votes
0answers
594 views

Trading out folding bike seat post

I currently have an older Dahon Mariner with a Telescope seat post. The third wheel that functions as the "third leg" (when the bike is folded) has broken off. To compensate, could I switch out the ...
2
votes
6answers
7k views

Ideal pants for bicycle commuting the rain

I commute about 10 miles a day in Portland, OR. Needless to say rain is a big part of many of my rides. My current rain pants leave me almost as sweaty as if I had just ridden without the rain gear. ...
2
votes
1answer
547 views

I want an cool urban/track bike with 3speeds. Could you recommend me one?

Good afternoon, I would like to buy a cool urban bike based on track design: sort like a tuned fuji feather and so forth. I would like it to be light and instead of a single speed, have 3 speeds. I ...
3
votes
7answers
10k views

Why do my tires keep losing air, even after having the tubes replaced?

I had a problem a few weeks ago where my tires were flat and needed air every time I took my bike out of the garage. I brought it to the local bike shop, and they replaced my tubes. This made a ...
2
votes
2answers
828 views

How to break reinforced Shimano pin?

Sorry if my technical English is a bit imprecise. I just put on new Shimano CN-HG53 chain. I joined the ends not with regular pin, but with provided reinforced one (like one of those below). The ...
1
vote
1answer
185 views

How can I use a small Shimano BB on any frame?

I have a Shimano BB-ES25 bottom bracket and 45T crankset that was removed from a Giant-CRX City with an eccentric hub (it had Shimano Alfine internal hub gears). They have literally never been used, ...
1
vote
1answer
342 views

Anyone make a 31 or 31.1 mm seatpost?

Some time ago, I bought a used Giant full suspension MTB. The guy cut the original seatpost too short for me, so I needed a new one. The post was some weird size, either 31 or 31.1 mm. Closest I ...
1
vote
2answers
178 views

Bike fitting in the UK

As an keen but casual touring cyclist I'm interested in getting a little more competitive and also keeping myself comfortable over longer distances. So I'm considering getting professionally fitted, ...
-1
votes
1answer
200 views

Time trial improvement from new bike

I can average 21.7mph for a 20 mile time trial (00:55:15), on my 2001 Rockhopper with 1.25" fatboy slicks, no lock out on shock. My bike weighs 25.25 lbs. I'm planning on buying a Cervelo 2012 r3, ...
4
votes
3answers
167 views

Were these bearings defective?

A couple of days ago my girlfriend's bicycle broke. The rear wheel was stuck. Tonight I had finally some spare time to have a look. The bearings had failed, so much so that the wheel must have spun ...
3
votes
4answers
795 views

Breaking spokes on adult tricycle

My mother is 60+ years old and 200+ lbs. She never learned to ride a bicycle, so she rides a Schwinn Town & Country adult tricycle. She loves it and rides it everyday, 2-5 miles everyday. The ...
1
vote
1answer
2k views

New wheel for 700x23c tire

I need a new wheel for my bike. I do not know how to tell what the rim size is. My tire size is 700x23c. It is my back wheel. I tried to have it trued which started breaking the rim. Rim finally broke ...
2
votes
2answers
892 views

Any wheel on any fork / frame?

I have been braking for a bit too long with worn off brake pads on not so new rims so I basically killed them. I currently have the stock wheels of an FX Trek 7.2 bike. I will most probably change ...
2
votes
3answers
152 views

“wound” on the tire side

The other day I was stopped at a traffic light when I felt my bike moving slowly forward. Did not pay really attention, thought there was a slight slope, so hit the brake and voila. But it did not ...
1
vote
1answer
171 views

How bad is this damaged lug

I have noticed a little crack in one of the lugs of my gazelle steel frame. I hav not ridden it since, because I am worried it will break. Here are some pictures. The lug in question is the one ...
1
vote
1answer
348 views

What is the folded size of ORI AR18 or ORI CR87?

I'm assuming ORI AR18 and ORI CR87 use the same frame design and size. I couldn't find any specs on these bikes about its folded dimension. ...
2
votes
1answer
591 views

How do I re-attach a crank that has fallen off?

I have already read My crank fell off, how do I re-attach it?, but it did not answer my question. I was biking up a hill in first gear, and I felt my left crank was a bit loose. Never having had ...
1
vote
3answers
298 views

What is the diameter of the seat post on Citizen folding bikes?

I have searched and cannot find the diameter of the seat post. I would like to get their Miami or Gotham model, but I know I'll need a seat extension as a 6'2" rider. Dahon and others make longer ...
0
votes
1answer
505 views

Shimano Chainring Set

I have a Shimano Altus 8-speed on my hybrid/commuter bike. I have to put in a new cassette and a new chain as well and looking at the teeth of the largest chainring cog in the front, it looks like the ...
1
vote
1answer
342 views

What is the size when folded of the ORI M9 or Mezzo D9?

ORI M9 and Mezzo D9 seem to have the same frame design. Does anyone know the dimension of these bikes when folded?
0
votes
1answer
75 views

Can i use a thinner standard mtb chain (SRAM 971) or does the chain need to be specific (SRAM PC-1) for coaster brake single speed

Time for a replacement chain, and i have a sram 971 sitting around, don't want to spend the money on a new chain, if i can get away with using a mountain bike chain. Hopefully it won't pop off with ...
2
votes
2answers
3k views

How accurate are indoor trainer power meters?

I recently got a Tacx Flow trainer, this being the first time using a power meter. For about 10 years, however, I have been doing monthly "uphill time trials," whereby I put the time into that formula ...
2
votes
2answers
453 views

What is causing noise/vibration high power input on right hand (drive side) crank?

I am getting a repetitive grinding sound/slight vibration while fully mashing on my Kona-humu single speed. Description of Problem This grinding is more similar to what you would hear from an ...
1
vote
3answers
150 views

Effective use of heart rate monitor

I have a Garmin Edge 500 with hear rate monitor, which I use while riding. Now I have all this hear rate data which I don't know how to apply. Can anyone point out how I should use this data for ...
4
votes
1answer
136 views

Canadian Winter Cycling Apparel

I'm planning in braving the harsh Canadian winter for my daily work commutes via bike. I currently have this nylon jacket, I was wondering if this would be adequate protection? Possibly with an ...
6
votes
4answers
588 views

Comparing gear ratios on different bike types

How can I compare gear ratios on different wheel sizes? How can I compare gear ratios on MTB with tracking bikes with bigger wheels? How can I compare gear ratios with gear hubs?
1
vote
1answer
675 views

Is the Power Pilot the only speedometer / computer that will work on a LeMond Revolution Trainer?

After just purchasing a Lemond Revolution trainer, I noticed and realized as soon as I set it up that I would be loosing my rear wheel and its spoke attached speedometer magnet. Are there any ...
2
votes
4answers
1k views

What can I do to keep my knees warm?

It's getting chilly out there and my knees are starting to hurt from my short commute. I tried layered trousers (thick jeans + windstopper on top), but to no avail - my knees still get cold, while my ...
2
votes
2answers
2k views

Am I better off buying a new bike, or upgrading my old bike?

Half a year ago I started to use again my old Schwinn Woodlands MTB for commuting. I didn't want to spend a fortune on a new bike, I wasn't certain that I would like to bike commute daily. Bike has ...
3
votes
2answers
588 views

Why are hand-built wheels considered to be better than machine-built wheels?

Why are hand-built wheels considered to be better than machine-built wheels? I would think that a machine-built wheel would be better and cheaper, since machines generally do a more precise job than ...

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