3
votes
2answers
1k views

Air in hydraulic brakes after bleed

Today I bled an Avid Elixir 1 after it had gone soft over the winter. I followed the directions in the Park Tools Big Blue Book completely, used an Avid bleed kit and opened a new bottle of DOT 5.1. ...
2
votes
1answer
555 views

How to get a replacement crankset gear for Dahon P8?

How can I get a replacement crankset gear for Dahon P8? It is a 52 T with 5 screws. I searched shops here in Belgium, but they have only an expensive whole assembly.
4
votes
2answers
14k views

Deformed/uneven/bumpy wheel/tire/tube, how to diagnose or repair?

My bike has a deformation in the rear wheel, almost surely not due to the rim. At some point the tire has a "valley", causing it to bump instead of rolling smoothly. I'd like to understand if I have ...
2
votes
1answer
358 views

Uneven Disc Brake performance

I'm using Hayes CX-5 Mechanical Disc brakes with Avid The G2 CleanSweep Rotors on my cross bike. I believe the Pads that come stock with Hayes CX-5 brakes are semi-metallic. I'm experiening uneven ...
6
votes
7answers
5k views

Reusing SRAM 10 Speed PowerLock?

According to: http://www.sram.com/sram/road/technologies/powerlock "SRAM chain engineers developed PowerLock as a tool free, sure and consistent way to connect our 10 speed chains. While PL does ...
5
votes
1answer
432 views

Repairing Carbon / Aluminum frame

My road bike is aluminum with a carbon rear triangle. The carbon rear slides into the aluminum, and I believe was bonded with some sort of epoxy. The pieces have begun to separate after 2.5 years ...
5
votes
5answers
2k views

How to properly position foot on flat pedals?

I recently replaced my clip-in pedals(SPD) with regular flat pedals on my commuter cycle with the hope to avoid wearing shoes with cleats on my commute. I want to wear my water proof boots to work ...
2
votes
1answer
291 views

New Bicycle - Brakes Squeak [duplicate]

I just bought a new Schwinn Cutter, but my brakes are constantly squeaking when I apply them. It has nothing to do with weather as I haven't taken it out in the rain. The rims on the bike do have some ...
1
vote
3answers
505 views

How to compensate broken thread in brake barrel adjuster?

On my disc brakes I realized the barrel cable adjuster has its thread broken and most of it is stuck inside the calliper. The picture is not my brake but they are quite similar: the black barrel ...
5
votes
4answers
258 views

Alternative uses for an aluminum MTB frame

Any alternative use for old mountain bike tyres and inner tube? So my frame has a large crack near the headtube and I am replacing it. Could I use the frame in any other way? E.g. give it away ...
3
votes
2answers
482 views

Do I need to face my new frame?

I just purchased a new aluminum MTB frame. The headset is a standard "NECO, 142, 1-1/8” AHEAD". The BB is ... I'm not sure, but is internal and threaded. How do I determine if I need to face or ream ...
8
votes
1answer
404 views

Help please to identify my Tandem

I have just purchased an old tandem, but don't know the make or year. Can anyone help me to identify it. The frame is steel and it has a frame number of 452599. There are no decals fitted but I attach ...
6
votes
4answers
2k views

Which way should a seat post clamp be oriented?

I heard somewhere (I don't remember where) once that a seat post clamp should be oriented with the gap at the front of the seat tube, opposite of the gap in the top of the seat tube. The logic behind ...
7
votes
2answers
3k views

What size are the screws used for water bottle mounts etc?

There's one size of bolt that's used all over modern bikes: water bottle mounts and the braze-ons for racks leap to mind. Whenever I need a few, I take one to the hardware store and sift through the ...
2
votes
1answer
202 views

Older Motobecane conversion

I recently acquired an older blue Motobecane Mirage with a great frame and paint. I have stripped it all down and salvaged everything I can (frame, front wheel, handlebars, front brake) but now I'm ...
3
votes
1answer
282 views

Is there a minimum weight limit for mountain bikes for USAC riders who are not UCI?

Basically the title is the questions, but to repeat is there a bike weight limit for riders who belong to a national association such as USAC, but are not riding for UCI points or registered with UCI? ...
1
vote
1answer
247 views

Source of John Deere line of children bicycle tires?

My son's bike is 12 inch children bike with the John Deere tractor theme to it. Aside from the paint, this line of kids bikes have some rather beefy, large square knobby tires. As with any ...
6
votes
2answers
558 views

What is the purpose of a braze-on on the underside of seat stay?

I have a Jamis Citizen 2 Step through (2013 or 14 maybe) which has a braze-on on the underside of the seat stay near the brake studs. Just one braze on each side. I'm curious as to what the intent ...
4
votes
1answer
114 views

Does rebuilding a hub increase efficiency?

I was recently helping a friend build a bike from scratch, and one of the first things he did was to inspect the hub to check that the wheel was rotating smoothly. He was adjusting the cone and lock ...
1
vote
1answer
639 views

How long does a shifter, rear mech and front mech last?

I am talking about absolutely dirt cheap components which are non-branded. In terms of number of kilometres how long do they last? The bicycle is ridden on city and country roads and maintained ...
10
votes
3answers
1k views

Is it harmful to store a bike in a repair stand when held by the seatpost?

I am currently storing my bike in a repair stand where it hangs by the seatpost. I was wondering if this might not be ideal and that the prolonged hanging might put too much stress on the bike and ...
1
vote
1answer
1k views

Will this Retrospec Siddhartha bike suit my needs? [closed]

This is my first question on here so please take it easy :) I will be relocating to Surrey (UK) in 2 weeks due to being offered a new job (as a software developer) and I am thinking of (finally) ...
11
votes
2answers
1k views

What's the best technique for removing a tyre from the rim?

This question talks about fitting a tyre back onto a rim, but I'd like to know how to get the tyre off in the first place. Especially if the tyre is very tight, or the dip in the middle of the rim ...
4
votes
2answers
557 views

Crank arm snapped: what could have caused it?

Recently, on my single-speed bike, the right crank arm just snapped. Was slowly going up a hill, and all of a sudden it broke in two pieces. I have now exchanged the entire crank & chain set ...
6
votes
3answers
2k views

Metal or plastic levers?

What are the advantages of buying plastic over metal tire levers? (or vice versa). Which ones are easier to use?
10
votes
4answers
605 views

Why use multiple materials on chainrings?

Why is it that on a typical mid-level road triple crankset, the outer rings (larger rings) will be aluminum, while the inner ring (small ring) is chro-mo? It seems to me that if aluminium was good ...
1
vote
1answer
488 views

Fox Talas full travel not reachable

Last 20 mm of my new Fox 32 Talas 29" 130mm 2013 fork is not possible to reach. It gets quickly hard before the full travel. It is ridden for 150 km so far. Tested both on trail (hitting rocks on hard ...
6
votes
1answer
1k views

For road riding, are mountain bikes safer than road bikes?

My son (age 15) and I have ridden a couple of thousand miles in the past few years--road riding. We like mountain climbs and descents. He was on a comfort bike until a month ago, when he acquired his ...
1
vote
1answer
174 views

Removing Old Freehub Body

I saw this. However, looking at a old 7 speed freehub body, it looks like it takes a special spline wrench (TL-FH10). It looks very similar to the fixing bolt here. Or do I need some other wrench ...
19
votes
2answers
474 views

Why do left pedals have inverted thread?

We all know right pedals are screwed regularly in the cranks. Whereas left ones are screwed in the other direction. Why is it like this and not the other way around? Here is how I see things: under ...
0
votes
1answer
76 views

Shipping my bike across US (DC > LA)? [duplicate]

OK! So, I have my (large) single speed in the DC area -- but have just relocated to the LA area. I'm wondering; What is the best and most economical way to have my bicycle shipped across the states? ...
2
votes
3answers
2k views

Slippage Under Load [New Bike]

I got a new bike a three or four weeks ago and have noticed the issue arise this last week or two. When I'm going up a hill (or any heavy load), my gears will slip. I don't think it's moving ...
1
vote
1answer
344 views

May I ignore the frame damage (or should I get a budget carbon frame)

I was happily using my Canonndale F5 Hardtail to commute to work and other places (like shopping, going to a swimming pool and the like) until recently I had a very unfortunate accident with a car. To ...
2
votes
4answers
5k views

Different tire and rim widths front and back - Why? Should I replace one?

I just bought a Trek 7.2 hybrid bike on Ebay and got the surprise (didn't read the listing closely!) that the front and back tires and rims are different widths. I am wondering if I should give it a ...
4
votes
2answers
249 views

How to test-ride a full-suspension bike?

I am looking for a MTB, but am unsure how to measure if the frame would fit me. I haven't had a full-suspension bike. Furthermore, I am pretty sure MTBs perform entirely differently in the city and ...
7
votes
3answers
2k views

Is my derailleur hanger too bent?

I bent the (steel) derailleur hanger on my 9spd cassetted (steel) Bianchi Volpe about 1.5 yrs ago, and I just did it again, but worse. This time the derailleur got sucked into the wheel and really did ...
1
vote
1answer
184 views

When to buy an enduro bike: autumn or spring?

At what time of year can I buy a bicycle for the best price? Here is some more information for my specific case. I live in Bulgaria, and as the bike needs to be tested, purchasing from abroad ...
5
votes
2answers
356 views

Carbon cranks care?

I have carbon cranks (SRAM S-2200) on a new bike. The side is quite protected but the bottom part, where the pedals are fitted, is not. Hitting rocks on the bumpy road is sometimes inevitable. How ...
5
votes
1answer
240 views

Any tips for aligning fenders?

I recently bought a used trekking bike (Focus) to commute to work in Berlin. It's a great bike, and now that the weather is a little wetter I'm finding that the fenders it came with aren't quite ...
5
votes
2answers
4k views

Left pedal coming loose

On my bike, which I just built out of spare parts, the left pedal seems to constantly be coming loose. It seems to come out about 5m every time I ride ~10km. It's an old cotter pin crank, and the ...
5
votes
2answers
144 views

Source for statistics from pro cycle races

I've been searching all over the web for statistics from bike races, starting with the Tour de France because it is the largest. Stats I have been able to find include each stage's winner with their ...
7
votes
3answers
274 views

XTR Shadow Plus derailleur soft setting?

XTR Shadow Plus derailleur has a switch between a hard and soft chain tension. The difference is hardly noticeable when shifting. Is there ever any good reason to use the soft setting when the hard ...
3
votes
1answer
1k views

Alternative options for Trek FX 7.1 brakes

Around four months ago my parents bought me a Trek FX 7.1 for my birthday while I was at work. At first I was fairly excited and happy with it over my old Supercycle which served me well for the past ...
10
votes
1answer
29k views

Difference between Cyclocross, Touring, and Road Bikes?

My question is "What is the difference between Cyclocross, Touring, and Road Bikes? Also what are their intended uses (their place in the cycle 'community'?)" I have looked at What is the difference ...
3
votes
1answer
206 views

Are BMX threaded headsets and other threaded headsets interchangeable?

I want to buy a threaded headset for an old road frame that takes 1 inch threaded steerer tube / headsets. I see headsets for sale online that are labeled as "1 inch threaded BMX headset". Is there ...
3
votes
1answer
702 views

Recommended settings for Specialized Brain with respect to durability

I am seeking the right combination of shock pressure vs. Brain threshold settings for new Stumpjumper Elite (with Specialized Brain inertia valve) with respect to durability. Are there any ...
9
votes
8answers
1k views

What accessories do I have to add to my bike so that I may commute during rainy weather?

I have a hybrid (Schwinn Sporterra) which I use for commuting except when it rains. The main problem of riding it during the rains is the dirt that gets spewn all over, esp over the drive-train. ...
6
votes
1answer
301 views

S shaped down tube (MTB)

Are there any advantages of S shaped down tubes over the traditional ones on MTB? For example: what do you think of this design? Jamis Exile Comp 2013
2
votes
2answers
859 views

Leaking Slime inner tube valve after opened for first time since install

I put some extra air in my rear mountain bike tyre yesterday. It uses the SLIME inner tube. It wasn't flat nor had a puncture, I was just topping it up to make the tyre a bit harder. I cycled to work ...
3
votes
1answer
313 views

What chain is this?

I have a Viking Torino 21 speed road bike. The bike has Shimano Sora derailleurs. The chain is in need of replacing but I don't know what chain to buy. Here is a photo I have taken of the current ...

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