2
votes
1answer
71 views

Do tire / tube / valve combinations that don't leak air exist?

I'm not clear on why tire pressure decreases over time. I understand that air escapes through the tube. Possibly some leaks through the valve too? In any case, do tire / tube / valve combinations ...
0
votes
1answer
102 views

What exactly happened to my rear derailleur?

I had installed my front derailleur and was adjusting the high/low when I noticed my rear derailleur was hitting the spokes of my wheel. Suddenly, I saw a screw pop out and then my derailleur popped ...
1
vote
2answers
150 views

What is the relationship between tyre pressure and weight?

To give an example of what I'm trying to understand: To accelerate to a given speed or maintain that speed with a tyre pressure of e.g. 100PSI requires a certain amount of energy. If that amount of ...
4
votes
3answers
798 views

Analysis of Stages high-speed data

A while ago Stages added a new feature to their power meter: High Speed Data recording added to capture pedaling force (kgf) and torque (Nm) 64 times per second for post ride analysis (.csv ...
5
votes
1answer
312 views

Used-bike: How much to reserve for repairs/upgrades of total budget?

Let's say I have 500€ to buy a second hand bike. How much of that budget shall I keep for repairs and upgrades, and how much shall I spend on the bike itself? Of course it depends on the condition ...
4
votes
2answers
209 views

Knee feeling after long ride with road bike

During the last 2 months, I rode on my road bike for a few times (about 7 times) a way that is about 60 km (37.282 mi) long. Two days before, when I did this ride, after the midst of it, I started to ...
0
votes
0answers
70 views

Peculiar feel when pedaling

I ride an early 90s Scott Unitrack CST with the original Shimano Deore drivetrain it came with. Same as this one. When pedaling, the right pedal has a peculiar feel like a sudden inward jerk at a ...
1
vote
1answer
86 views

Shimano R500 or Alex ALX-295 - Which Are Better?

I have a set of Shimano R500 wheels on my current road bike, but have just upgraded bikes; the new bike comes with the Alex ALX-295 wheelset (they come on a Specialized Roubaix). Lots of the roads ...
2
votes
3answers
131 views

MTB with Road crank

I would like to put an Road crank on my MTB, I basically only use it for commuting and I all the time find myself in the highest gear, 42/11... Is it possible to exchange my Shimano Deore HT2 crank ...
1
vote
2answers
109 views

What will I need to consider when modernizing a pre-1990s steel frame? [closed]

I'm in the process of upgrading a well loved 1970s steel frame from a downtube shifter system to a modern 'brifter' system. Through this process I've had to look at many disparate sources to get ...
3
votes
2answers
124 views

Compatibility Look-Keo/Look/SPD-Sl Plates & Pedals

i got some old Look Road Pedals (see picture). Now i found plenty of Cleats for cheap, but they all are for either Look Keo, Delta or SPD-Sl. Are those compatible? Did anything change from the old ...
3
votes
4answers
264 views

Why top touring bikes have no suspension forks?

I'm in the search for a new long distance touring bike, and I'm surprised that most top models have no front suspension (IDWorks, Tout Terrain, Koga, etc.). It looks like front suspension is a rarity ...
2
votes
2answers
114 views

Frame differences between 700c and 29er?

Before you answer: no matter what bike I would change tires to 2" slick front, 2" semi-slick rear, so in other words, tires in this question does not play role (now I have 26" MTB and I use 2.35" to ...
2
votes
4answers
203 views

How should I transport Cannondale Bad Boy 5 INSIDE a BMW 4 Series Coupe?

So, I have a Cannondale Bad Boy 5 and I'm LOVING it. I'd like to understand how to transport it. I have 2014 BMW 4 Series coupe. Even though I folded back seats (to maximize trunk storage), bike ...
1
vote
2answers
55 views

Hydraulic brakes feel loose

I have a bike with Avid hydraulic brakes. The levers feel loose and at the end of pushing it, there is a "soft" feeling (like when V-brakes pads aren't adjusted properly). As I understand, it's air ...
4
votes
2answers
251 views

What is the effect of changing length of crank arms?

There are some length options for the crank arms - like 170mm, 175mm. What is the difference for the rider? In which way does it effect the commute? Tried looking at Selecting the right crank ...
-1
votes
1answer
62 views

Specific 10 speed chain models that work well on 9 speed Shimano rear drivetrains

I maintain several 9-speed (rear cassette) road bikes (Giant OCR 1/2/3, Tiagra and 105 from 2000-ish era) and one 10-speed rear cassette 105 road bike, made in 2007. I'm trying to find out if I can ...
3
votes
0answers
68 views

Trek 1.1 Derailleur Hanger

I've got a 2011 Trek 1.1, and my derailleur hanger broke in a crash a few weeks ago. I've tried both a number 5 and number 6 hanger, which are what WheelsMFG has listed, but neither seem to fit. There ...
1
vote
1answer
33 views

Chainring Compatability

I've recently purchased a - 2nd hand - downhill bike which runs an 8 speed drive-train. Some components could do with an upgrade - specifically the shifter which is damaged. I have all of the ...
3
votes
2answers
86 views

Are Claris(ST-2400) shifters drop-in replacements for St-2300s?

I've got 2300s on my bike. I don't much like the little thumb levers. I'd like to upgrade to Claris shifters, but I need to minimise the costs. Can I just change the shifters? They're both 8 speed ...
5
votes
7answers
195 views

How do I get rid of odor from cycling shoes?

So I have a pair of: Diadora X-Country 2 MTB Shoes (pic below) How would I go about cleaning them, primarily to remove odor? I am tempted to put this in the washing machine- but the cleet is totally ...
0
votes
2answers
70 views

FSA Omega MegaEXO Press fit BB 19mm removal (non standard BB86)

Has anyone removed a 19mm spindle (Omega) Press fit bottom bracket without destroying it in the process? I have watched http://www.fullspeedahead.tv/video/7006668/installation-of-megaexo-crankset-on ...
1
vote
2answers
143 views

Why has my ride changed?

The bike is a Specialized Camber 29, about five months old, from a shop about 220km away. Something feels different in my ride, and I'm wondering what it is. the rear goes sideways in sand much ...
2
votes
2answers
95 views

Larger cassette options on a compact set up?

I've been thinking of getting a larger cassette for my bike to tackle hills better, and I'm just looking for some thoughts. I have a 2011 Honky Tonk ...
2
votes
2answers
66 views

how many spacers do I need for a 83mm bottom bracket and a 142x10 hub?

I have a Zee crankset on a 83mm bottom bracket (downhill bike). The Shimano manual says to use two 2.5mm spacers on the drive side, and one 2.5mm spacer on the non-drive side. However, this presumes ...
13
votes
4answers
1k views

Does it make you safer to use lights during the day?

My bike light, the Cygolite Metro 360, has a "Daylighting" mode which flashes very brightly and is intended to be used during the day. Similarly, many tail lights have flashing modes. Obviously one ...
3
votes
2answers
148 views

how long does it take to break in a brooks saddle (b17)

I'm going on a 2 week touring trip and looking to buy a comfortable saddle that will be make my rides pleasant and efficient. I have about a month to break in the saddle. How long should I spend ...
2
votes
1answer
74 views

Can I use a Suntour Cyclone GT Rear Derailleur for a 10 speed Campagnolo cassette?

I'm building up a road bike and have a wheelset with a rear hub that has a Campagnolo Chorus 10 speed cassette. The front derailleur will be a triple and I'm looking into the possibility of using a ...
3
votes
7answers
139 views

Prescription Cycling Glasses

I visited my optician last week and the time has finally come for me to start wearing glasses for driving. As a result of this I figure it is probably a good idea to start thinking about prescription ...
1
vote
1answer
67 views

Need help for my wheel size

If my tyre size is 27 by 1/4. what size of wheel do I need. I just bought a second hand road bike and will need to repair it. But one of my problems is what size my wheels are, 700c or 27 by 1/4.
1
vote
1answer
104 views

Fitting questions - Effective top tube vs horizontal

I'm stuck in understanding size tables of a bike. For example this size chart: Am I right in my thoughts? Effective top tube (ETT) is horizontal value so, it's B1 on the chart. BS is the length of ...
1
vote
1answer
46 views

Problem during installation of Rockshox Reverb Stealth product

I am following the SRAM official procedure on a very similar bike to the one reviewed. However, I am stuck at this part: unthread the hose from the remote's barb. I just can't. I am holding the hose ...
5
votes
1answer
333 views

Is it worth buying used bikes of old models?

I am going to buy a road bike, and my budget is about 1300$. And I'm faced dilemma: 1) new 2015 (next year) road bike, for example Merida (aluminum frame, shimano 105, carbon fork) 2) used 2009-2010 ...
1
vote
2answers
91 views

Advice on buying a new bike

I am looking to buy a new brand new bike but I'm not experienced at all with bike specs and quality and things to look out for etc. I have previously only had second hand really basic bicycles in my ...
1
vote
0answers
63 views

Serial numbers on bottom of a pedal crank housing from a 50s era Schwinn?

Can someone please explain what these three numbers mean on the pedal crank housing? I believe this to be the pedal crank housing from a 1956 Spitfire Ladies Bike. The Schwinn Serial reads M0D502 ...
0
votes
0answers
40 views

Allen Coggan power profile table for Cyclo cross riders?

If you were to create a power profile based on those seen in training and racing with a power meter by Hunter Allen and Andrew Coggan. What would it look like a sprinter or an all rounder? To help ...
1
vote
5answers
152 views

Adjusting gear ratio

I currently ride a single-speed converted bike (vertical drop-outs). I like the ride but feel that when I'm going for high speed on the road, I'm pedaling too much. Currently running a 18T cog on the ...
0
votes
4answers
119 views

What are the most important accessories for a new biker to get? [closed]

I am a new biker and am going to be commuting to work on a hybrid. There are many cool accessories that help you carry gear, bike at night, track your rides, make adjustments and quick repairs like ...
2
votes
2answers
104 views

freewheel removal tool for Shimano MF TZ21

I have a Rockrider 5.1 cycle with a Shimano MFTZ21 freewheel. In order to remove the freewheel, I purchased the Btwin tool kit. But the removal tool provided in the kit does not fit on my freewheel. ...
3
votes
5answers
216 views

Is it worth it to get a bike computer with cadence?

I'm looking into purchasing a bike computer, primarily to track distance and speed. Is it worth it to go up a notch and get a computer that also tracks cadence? How accurate are bike computers at ...
0
votes
1answer
38 views

Dual air forks negative positive chamber pressure equality

Regarding solo air forks everything is clear. Once we bumped both chambers pressure is equal. But why for dual air forks air pressure doesn't try to get equal in both chambers? What's the point of ...
3
votes
3answers
163 views

What kinds of tools do I need to do bike maintenance, e.g. adding a rack?

I just got a new Trek 7.2 for commuting and getting around town. It's a great bike but I want to add some stuff to it like a rack. I am fairly handy and have more or less a full toolkit in my ...
1
vote
0answers
21 views

How air suspension lockout works [duplicate]

Can anyone please explain how air suspension lockout works? I mean physically what happens inside the shock? There are also multiple setting in lockout, how are they implemted?
2
votes
2answers
248 views

I need help to identify this bike

This is my mother in law's bicycle from when she was a child. While cleaning out a lean-to on the back forty I found this bike inside. I was hoping to give her a bike that is identical to hers that ...
3
votes
4answers
86 views

Bike gears not shifting how they should

So I've not cycled in a while but my step dad was using my bike and he has a habbit of breaking stuff. I have since decided to start cycling to work again and I replaced various parts due to rust etc ...
1
vote
1answer
81 views

Upgrading cassette - what do I need to be aware of?

I'm looking to replace my rear cassette and reduce the tooth count between the sprockets in order to make my gear changes less dramatic. I currently have a 11/26 9 speed SRAM cassette, and a stock ...
4
votes
1answer
198 views

Does the National Bike Registry work?

The National Bike Registry is an nationwide registry of bikes with identifying information (serial numbers, make/model, owner information) in the US that is intended to help identify stolen or ...
1
vote
3answers
101 views

Bike trying to jumps gears when I stand

My 2014 Norco storm 9.2 has a problem - whenever I am in a higher gear and standing up it tends to click and try to jump gears. When I am sitting down it does not do this. It only happens when I ...
-5
votes
1answer
146 views

Asking for Feedback about my Bike Lock Invention [closed]

I’m a college student and cyclist at USC. I’ve had three bikes stolen while at USC and it really annoyed me so now I’m doing something about it. I’ve created a lock that specifically secures the ...
2
votes
2answers
217 views

Bicycle Seating Posture Ergonomics

Road bikes have a forward bent seating posture, mountain bikes have a straight seating posture. I was wondering which of the above seating postures (of road bikes or mountain bike) is better for ...

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