2
votes
1answer
6 views

Tourney RD upgrade

I have a Shimano Tourney rear derailleur that has an extension claw (hanger). I would like to replace it with a Deore M591. Do I need to install an adapter to make up the length of the claw? ...
0
votes
1answer
33 views
39
votes
6answers
5k views

How to prevent drafting?

I am engaging in a friendly race with a co-worker. He has told me he plans on drafting behind me most of the race to save energy. I want to make it hard for him(without doing anything mean ...
2
votes
4answers
231 views

Is cycling with crystal sunglasses dangerous?

I'm a commuter cyclist. I have a pair of Persol sunglasses with leaded crystal lenses. Do y'all think this is dangerous in case of an accident? I have terrible thoughts of wrecking and glass shards ...
0
votes
1answer
36 views

Looking into getting into trail riding, need opinions on some bikes

My budget is very low, about up to $300. I have found couple of options on Amazon (listed below). I do not live near mountains, but would like a mountain bike that is versatile and is very good on ...
0
votes
1answer
13 views

What is my bottom bracket spindle length?

I have this ubiquitous cheap Wal-Mart bike (http://www.walmart.com/ip/26-Roadmaster-Granite-Peak-Men-s-Bike-Black-Green/45089317z), which has a square taper bottom bracket. I'm trying to buy a new ...
1
vote
1answer
194 views

max weight that the shimano Rs400 can carry ?

I am intending to buy the shimano RS400 pair of wheels to replace my 20 spokes wheels. I intend to use them for touring and commuting when an expected heavy luggage. Was wondering the maximum weight ...
18
votes
10answers
7k views

need cycling eyewear, but fogging is a big problem

I'm commuting in temperatures ranging from -10 to -25C without windchill factored in. I have a typical pair of interchangeable lens wrap around cycling glasses. I find that they, without fail, ...
12
votes
6answers
995 views

My wife has Cerebral Palsy (CP) so can’t balance on a normal bike, what are the options so she can go cycling with me?

My wife has Cerebral Palsy (CP) so can’t balance on a normal bike, what are the options so she can go cycling with me? We don't own a van, the size of any "bike" is important as it will have to fit ...
0
votes
2answers
29 views

Identify missing fender part

Let's play "identify the missing part"! While riding, something which holds the fender to the frame between the chainstays and just behind the bottom bracket fell off: Please help me make my bike ...
4
votes
3answers
137 views

Increasing stamina while in the office

I started to bike again after 3 or more months of hiatus. I'm currently using a XXS Merida Scultura 300 (I previously used a Trinx R300 needed to upgrade because of the wrong geometry). Thing is I ...
1
vote
1answer
68 views

Can any crankset be used?

I have a road bike (2013 Schwinn Tourist) with a sealed bottom bracket (107mm spacing) with a square taper and triple chainwheel (48, 38, 28) assembly that is one of the inexpensive riveted types. I ...
0
votes
1answer
38 views

Replacing Shimano RS21 rims

I have damaged the rim of my rear Shimano RS21 wheel (unexpectedly hit a sharp kerb) which affects braking quite severely so I was wondering if it is possible to replace just the rim and not the whole ...
0
votes
0answers
18 views

Punctures on outer part on inner tube at valve on both front and rear tyres after 75miles . Signs of abrasion at puncture site.

Just recently changed the wheels on my BMC team machine Slr02 for Campy Zondas also increased the tyre width to 25mm from 23 mm using Michelin Pro 4 endurance . I used Continental inner tubes at ...
1
vote
1answer
31 views

What is the length of the Hope XC internal spacer from freehub to bearing?

I think I have a worn spacer as it has ragged edges. Does anyone have the length of this spacer when new?
1
vote
1answer
64 views

Minimum tire width to avoid snake bite

I have a road bike with 22mm tires. They are super fast, but I get them punctured a lot. I have decided to switch to wider tires to avoid snake bites, and I was wondering what would be the minimum ...
13
votes
5answers
2k views

Are there any recumbent tricycles that can be transported with a normal car?

My wife would like a 3 wheeled recumbent, but I can’t see how we can transport one with a normal car. I can put my bike on a rack or the roof, but all the recumbent I have seen are too large to ...
8
votes
2answers
19k views

How do I translate this tire description into English?

On my tire is printed the following: 25-622 (28 x 1.00 - 700x25c) 6.8-8.0 Bar, 85-115 psi I think I know what some of this means but am not sure. BTW, this came standard on my 2012 Cannondale ...
9
votes
2answers
254 views

How can a recumbent tadpole trike brake three wheels with only two levers?

So this is probably a terrible idea, but I was looking at recumbent tadpoles recently and it just clicked. I would have two brake levers but three wheels. I would need to have to... 1.) Calibrate the ...
8
votes
3answers
25k views

Better solution for uncomfortably low bars: a stem riser, or taller stem?

I've got my (threaded) stem at the maximum height, but I'd be more comfortable if the bars were higher relative to the seat. It would be uncomfortable to lower the seat any further. I was intrigued ...
10
votes
4answers
47k views

Can I put 700c tires on rims made for 27 x 1.25"?

It's getting hard to find any selection for my old Avanti 12 speed. it currently uses 27 x 1.25 inch tires. Can I put 700c tires without needing to buy new rims?
1
vote
0answers
13 views

Kryptonite Flex frame bracket slides around a lot

I had my Krytonite mini for a few years now, and I remember installing the Flex-frame bracket on a bike frame which I left outside when I got it. I had a go at removing it recently and put it on my ...
0
votes
0answers
8 views

Bearing cap for Rotor BB30 to 24mm

I have a BB30 to 24mm adapter from Rotor. When installing the axle pushed out the bearing cap and I broke it trying to get it back in. What size replacement would I need? I'm not sure of the sizing ...
-1
votes
0answers
19 views

What brand/model is bike with serial #; PL*D****

I'm interested in buying a bike with serial number; PL4D 8499. Can you tell me what it is?
0
votes
0answers
27 views

got a sears robuck three wheeler need axel

Got a broken bolt that holds rim on axel broke inside need to find axel or tip on how to fix it it is a decent bike trying to up grade it a little rims are still decent and needs oiled up a bit but ...
8
votes
4answers
179 views

Minimalist setup for a “travelling bike mechanic”?

I have very little living/working space of my own and so, in order to keep my personal bike in working order, I need to be able to transport "bike mechanic stuff" (e.g. tools, screws, cables, inner ...
6
votes
1answer
82 views

Traffic lights: double red

I have seen several times bike traffic lights like these: This one is from Vienna, Austria. One can also find them in Bordeaux, France and in Paris if I remember well. What purpose do these serve ...
1
vote
1answer
40 views

Can I install a front derailleur for my bike?

I just bought a Micargi RD-7 with 7 speed Shimano Tourney rear derailleur. Now, I want to upgrade my crankset from single chainring to three chainrings for better hill climbing. Is it possible to do ...
1
vote
3answers
105 views

Can I ride a triple front chainring with no front deraileruer

I've managed to strip the threads on my front deraileruer mechanism. Its off the bike now - can I ride it as-is until I locate a new front mechanism? The chain does stay on the front chainring where ...
0
votes
0answers
23 views

My cycle's gears don't change properly

At the rear wheel gear, the gear does not change from the 7th gear to the 6th gear when i change the gear in the handlebar once. But the next time i do it it changes. So, if the manual in the ...
1
vote
1answer
42 views

How to replace a bottle dynamo with batteries

I have a bike using a bottle dynamo. It works ok but I just use the light when it's absolutely needed because the dynamo really slows down the bike. I would like to make the bike run with batteries, ...
5
votes
3answers
145 views

new rear wheel: buy parts separately, or get from cheap bike?

I need a new rear wheel for my mountain bike, and I'm wondering which of two options will be the least bad option: buy this $80 bike from walmart and use the rear wheel from that buy the cheapest ...
0
votes
0answers
14 views

Advice on next Hardtail MTB purchase please! [on hold]

I'm looking at the Specialised Jynx Comp 650b or the Trek Gary Fischer Mamba female Mountain Bikes. I'm purchasing second hand and both are in great condition and well maintained. Any advice as to ...
3
votes
1answer
18 views

2 speed shifter for three chainring set

I just bought a A070 Shimano Sti 2x7 set for my bike which is 3x7. Could I still install and use all three chainrings? Or would I be limited to the two chain rings?
4
votes
3answers
2k views

Are there any generic hose extensions for frame pumps?

I see two kinds of portable frame pumps to carry with me on my riding: Pmps that have a flexible hose that is either integral or pulled out and/or screwed on (e.g. Topeak Road Morph, or Lezyne). ...
1
vote
0answers
30 views

putting a presta stem nut inside the rim?

Has anyone ever heard of this? I'm not sure how it happened, but when i went to replace my tire today, I found that I had two stem lock nuts on my valve. One inside the rim and one in the normal ...
3
votes
4answers
70 views

Electric bike rear wheel spokes breaking

I have an electric bike with a 500w rear hub. The spokes have broken twice in the last month on the hub end of the spokes.The spokes are bent at the hub end and threaded? This is where they break.As ...
18
votes
3answers
1k views

Do helmets really lose their quality with time even if kept in package?

A friend of mine, who works as a sales manager in a good bike shop advised me to never buy a helmet that is older than couple of years, and the best thing to do is to buy the current model line, when ...
1
vote
1answer
39 views

Servicing DT Swiss 240 FRONT hub

this is my first post here. How can I service a DT swiss 240 front hub, as in remove the adapter ( end cap ) to get to the insides? Do i need a special tool? Does it even need servicing? There is ...
3
votes
3answers
101 views

Will using this kind of parking rack damage the wheel?

In Copenhagen, there are many of these parking racks (as shown in the picture), usually people (like me) will just slip the front wheel in and lock the bike. After using them for a while, I happen to ...
1
vote
1answer
24 views

How can I tell if my presta valves have removable cores?

I read about valves that have removable cores and that is better for applying sealant. How can I tell if my valves have cores that are removable? (I don't have the type of the tube, or any other ...
2
votes
2answers
75 views

Help with choosing an entry level mountain bike

Me and my wife are looking to start cycling in the nearby nature. We aren't expert biker cyclers but are in reasonable shape (we're in our 20s). We're looking for two entry level bikes, each up to the ...
3
votes
1answer
34 views

Limits on tooth difference when replacing crankset

Would it be possible to replace a 46/34 compact crankset to an even more compact 42/26 (SPA CYCLES TD-2)? The bike is a Specialized Awol Elite, which uses a Tiagra groupset (except the crank which ...
3
votes
5answers
722 views

Is it practical to wear motorcycle half helmet for road cycling?

I am considering buying a motorcycle half helmet for cycling. I ride road bike for leisure. I would ride alongside with traffics quite often. First of all, I am looking for more protection. I am ...
2
votes
0answers
16 views

Replacement of sprocket [duplicate]

When should the front sprocket and back cassette be replaced.I have a 2014 Trek 520 Touring bike with 6500 miles and am planning a cross country touring trip in August.
5
votes
2answers
129 views

Tiredness after long rides

I did 140km ride 4 days ago, and 200km ride yesterday. After that second ride I was really tired. I didn't have any muscle sores, I averaged 25km/h, I could safely do more. But the whole body was in ...
27
votes
9answers
70k views

How do on-road mountain bike speeds translate to road bike speeds?

When cycling on roads on my mountain bike, I generally get around 10-12 miles per hour on a flat surface. What sort of speeds can I expect to get on a road bike?
1
vote
1answer
6k views

How to convert a multi-speed bike to single-speed with coaster brake?

Now I don't want to take all the credit for this bike, but I'm pretty sure Trek must've lovingly had me in mind when they made this. I mean come on. This bike is awesome. Buying their beach cruiser ...
8
votes
2answers
202 views

How to check the gear before renting a bike?

I don't own a bicycle. Whenever I go cycling, I would need to rent one. The first thing that I always check is to see if the brakes are working properly. Sometimes, I have no idea that the gear is ...
3
votes
2answers
19 views

Does Shimano XTR RD-M9000 SGS 11-Speed Shadow+ MTB Rear Derailleur Long Cage work with 10speed XT shifter?

I just bought a used bike with a broken 10 speed XT rear derailleur. Would a NEW Shimano XTR RD-M9000 SGS 11-Speed Shadow+ MTB Rear Derailleur Long Cage ( 182006158222 ) be compatible with 10 speed XT ...

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