4
votes
1answer
153 views

Are helmets with chin guards safer than those without?

I do trail riding with some technical elements, and I have decided to upgrade my normal helmet to some sort of a full-face helmet. I have seen some sturdy-looking helmets, which resemble the ...
1
vote
1answer
161 views

Bike for mixed use

I've been spinning for the last two years and looking to purchase my first road bike, comparing road, touring, cyclocross and hybrid. I won't race, but do look to ride weekly & take some 40-80 ...
1
vote
2answers
140 views

Will my bike hold my weight?

I'm pretty heavy (~150kg/330lbs) but being fond of cycling in the past, I decided to buy a bike, and maybe try to lose a few kilos with it. I didn't have too much time for looking around, so I bought ...
3
votes
1answer
283 views

installing a 700-18-23C tube on a bicycle

When installing a 700-18/23C tube, does the nut on the valve stem go inside the tire (unseen once the tire is on the wheel rim) or outside the rim (so it is seen among the spokes)?
3
votes
1answer
105 views

hill climb tt pacing strategy for short steep hills?

There are several hill climb events in my area towards the end of the year, from august onward. Most of the hills are no longer than 0.8km long and well above an average 6% gradient. The main ones I ...
1
vote
1answer
79 views

What are the differences in mountain bike hubs (With wheelset recommendation)?

I'm possibly getting a disc brake, 2013 Specialized Camber 29er without the wheelset. I was looking on wheelbuilder to see how much a wheelset might be (to save weight over factory replacement), and ...
3
votes
0answers
58 views

Do Miche bottom brackets require a special tool, or is this one damaged?

I just bought a Miche Primato bottom bracket and tried installing it using Park's BBT-5 (the same tool I used to remove the previous bottom bracket, also Miche, but from 2008). The BBT-5 fit into the ...
0
votes
1answer
85 views

Can I change chainring size on a dirt jump bike?

I don't know the name of it but there is a part on single speed bikes. The gear? I think right where the crank is connected. Well on bmx bikes and especially dirt jumping bikes it is really small and ...
4
votes
1answer
108 views

Is there not enough shim on my suspension pivot?

I bought month ago new full suspension bike "Kellys Beast 2013". When I maintained it, I noticed that there seems to be a shim missing on one rear pivot: The most interesting that it is symmetrical ...
4
votes
3answers
228 views

Air suspension unit for relatively low mass

Let's assume I have an object with a mass of 3 kg. I want this object to isolate from vertical shocks and vibrations when I'm riding approximately 30 km/u on my bike. Let's also assume I have an air ...
1
vote
0answers
81 views

Low gearing setup for road bike with Shimano dual control

Question: What is my best bet for a crankset, given the following requirements for a road bike I am setting up: 68mm "English" thread bottom bracket Shimano STI "brifters", 2x10 (I already have ...
5
votes
1answer
128 views

Magnetic trainer failure

I never thought I'd be on the receiving end of a catastrophic failure, but I am and I am left with some questions. While reading on Wikipedia I noticed it says a con of magnetic trainers is that they ...
0
votes
1answer
79 views

Cube Agree GTC - Tri-Bars

I have a Cube Agree GTC (2012), and I would like to buy some tri-bars for it. I've read that this model ( Although, on second thoughts, maybe this is a newer model...) has compatibility issues with ...
3
votes
1answer
77 views

What is a shimano ispec shifter?

I know what a shifter is but I could not find a definitive answer on what an ispec shifter is or how is it different from a regular shifter. For example the 2014 shimano deore groupset says it has ...
1
vote
1answer
65 views

Wheels changing on Giant Rebel 4 [closed]

Very often even without extreme riding my wheels are getting light 8-like form. Is this the reason to change wheels or sleeve Its more cosmetic problem which can evolute to more problems My bike is ...
5
votes
2answers
404 views

Disc brake producing noise after a crash

After little crash I'm hearing strange knife-like sounds from my disk brakes, but the wheel and brakes doesn't look damaged. What should I do?
1
vote
0answers
52 views

Play in Jockey wheels Sram X7 rear derailleur

I have an SRAM x7 rear derailleur only been using it a few months (through the rain) and the jockey wheels seem in a bad way. There's a lot of side to side play in them and the teeth look sharp when i ...
1
vote
1answer
171 views

Fitting a bottle cage

I have an old steel frame Peugot road bike that I want to fit a bottle cage to. It has braze-ons but I'm not sure how to mount it. Can anyone advise? Pictures uploaded.
9
votes
3answers
942 views

Are road bikes capable of being ridden on gravel?

I am new to road bikes and was wondering if these bikes are capable of riding on light gravel or whether I will get flats? Does it depend on the tire material or are generally all road bike tires for ...
1
vote
1answer
77 views

Have you built your own components? [closed]

I got a commuter rig from a mailorder mike operation and would love to replace the stem with something I've made. I am getting into some CNC/casting/woodworking was curious if people have fabricated ...
5
votes
2answers
106 views

What tolerances should I use for spoke tension when building a wheel

I am replacing the rim on my rear wheel with a new one. I've brought up the tension on the spokes close to the final tension by truing / increasing tension / truing / increasing tension. I've got ...
12
votes
2answers
308 views

Cut U-Lock…Bicycle Left?

Is this a common thing, and if so, what is the motivation behind it? When I went to unlock my bicycle this morning, when I touched the U-Lock, it basically fell apart. It looks like someone used a ...
4
votes
2answers
111 views

Tapping threads into braze-ons

I have a rather old frame that doesn't have threads on the rear rack braze-ons, and thus requires a nut. This nut makes contact with the chain if the chain is on the outer sprocket, so I'd like to tap ...
6
votes
4answers
218 views

Howto design a route in Google Maps on the pc and navigate on the android device

I would like to do the following: Create a route in Google Maps on the pc and save it under my account Set Start and Target and let google maps create a route for my bycicle. Change the route and ...
7
votes
0answers
286 views

Name that frame! (Likely Japanese, likely made in 1986, with known serial number, but with an unknown manufacturer)

I have a bike frame of unknown lineage. The bike question is if the manufacture can be identified from the serial number. What is known: The serial number under the bottom bracket is IS513786 The ...
1
vote
1answer
111 views

When I press on pedal, intermittent loss of power

Recently, when I cycled my bike the pedals would jump when I pushed down on them. I brought it to a shop who replaced the cassette, the chain, the two crank arms and probably the crankset. I have also ...
3
votes
2answers
88 views

Which way to wrap handlebar tape

Seing this thread showed me what the tape should be wrapped up from the outside of the handlebars (left side handle wrapped clockwise seen from behind, and vice versa) but looking at some videos at ...
0
votes
1answer
53 views

how to adjust the derailer - apart from the L/H limiting screws

Pardon my newb terminology. My bike's chain will not stay on the H gear (the big ring) The front derailleur will not allow it. I have loosened the limiter screw out to it's maximum and, still, no ...
2
votes
1answer
101 views

Why are Avid brakes so difficult to bleed? [closed]

I have bled Avid Elixirs 3, 5, CR, etc... I still have a hard time getting a "good bleed." I follow the instructions online, and via Avid's youtube video, I use the kit and it still takes me going ...
3
votes
1answer
74 views

Modifying Brake Cable to Fit?

I have recently decided to replace my brake cables before a particularly long ride, since they haven't been replaced in a number of years. The problem I have is that the stock rear cable on my bike ...
1
vote
2answers
76 views

loose spoke that will not screw back in

Noticed that my rear wheel is pretty un-true and is hitting the brake pad / wont spin freely. Decided that I would try to fix it myself before opting to pay 20 bucks. There is one spoke that is ...
0
votes
1answer
55 views

KMC Z8S IG or HG compatibility

I have bought a KMC Z8S chain , but it slides over the rear cassette . The model of the cassette is Shimano CS-HG30-81 , it is not worn yet , and the chain length is also perfectly calculated . The ...
2
votes
2answers
187 views

What does a “dished” wheel mean? How to tighten spokes on such a wheel, without a spoke tension meter?

Should all the rear wheel spokes have equal tension? Or should the spokes from the side of the cassette be tighter, in order to skew to wheel in that direction, and the wheel to be centered in the ...
5
votes
1answer
172 views

How tight should brakes and shifters be on the handlebars?

How tight should handlebar components be? Here it's said 6-8Nm. However, I don't own a torque wrench at that range. Should the brake levers and commands be tight, or should they be able to twist, ...
2
votes
1answer
77 views

why does the lemond revolution turbo trainer quote its volume of air resistance in meter^2 and not per second cubed?

The Lemond revolution states that it creates consistent aero resistance with its fan power from 0 newtons to 40 newtons along one axis and 0 to 160 meters/second^2 on the other axis. Since air flow is ...
0
votes
1answer
50 views

Rockrider 8.1 rack and bags

I'll do a bike trip that will last a week and I need to mount a rear rack. My bike is a Rockrider 8.1 with disc brakes without threaded seat-stay bosses to attach the mounting bracket arms. A ...
1
vote
0answers
52 views

Sliding chain back on hub gear bikes

I got a folding bike 2 months ago and got my first hiccup. It has a 3-speed hub gear and while changing gears today, it seems like the chain slipped off the smaller chainring near the back wheel into ...
6
votes
4answers
517 views

If a lane is going to expand should the left lane be taken prior to the expansion?

This is US law and roads. Drive on right side. Speed Limit is 45mph (72kmh) And as @Benedikt Bauer pointed out solid white lines are not supposed to be crossed. In the morning though there is very ...
5
votes
1answer
118 views

What is the actual cable pull of brake levers?

I understand that there are 2 brake lever cable pull standards: Standard Pull Levers Long Pull Levers (for V-brakes and disc brakes) But what is the actual difference in pull? And specifically: ...
0
votes
2answers
66 views

Sliding chain over the cassette [duplicate]

Today I have replaced my chain with a kmc z8s. The rear cassette is Shimano acera 8 speed , and is not worn yet , so everything is OK with the cassette. But the problem is that the chain doesn't fit ...
5
votes
1answer
95 views

Do I need to be concerned about a carbon frame if I attach a bike trailer?

We have a bike trailer with the hitch attached to the rear axle. The frame of my wife's bike frame is part carbon (right around the rear axle), which I understand is more brittle than other materials. ...
2
votes
5answers
495 views

Speed and comfort of a racing bicycle?

I just saw this guy called Jason Rourke breaking the record of 112.94mph (181km/h) on his bicycle. I wish I could have such a bicycle to ride, but I have never ridden a racing bicycle with gears. I ...
2
votes
1answer
100 views

Calculate frame stack and reach

Is is possible to calculate stack and reach for framesize 63?
1
vote
3answers
124 views

Cycle tyre and tube burst

I pumped my cycle front tyre to 105 psi (700*23c) 5 days back and cycled some 60 km on the same day without any punctures. Afterwards I parked the cycle in my bedroom for the last 5 days (due to ...
5
votes
2answers
321 views

Bottom bracket removal, what is this part?

I have a new (old) bicycle, and I am in the process of disassembling it. I arrived to the bottom bracket (with a cottered crank), and unscrewed the ring without problems, but then I'm faced with a ...
1
vote
1answer
70 views

Adaptor for 20mm Shimano saint 810 hub to 15mm?

Currently I'm running a Shimano Saint 810 front hub and fork Lyrik coil 20mm. I've a good offer on a brand new Manitou Mattoc 2014. But this fork uses 15mm axle. I'm looking for an adapter to be able ...
0
votes
1answer
68 views

Can big drop-offs and rocky descents be handled by 29er with 120mm

Looking to buy the new Whyte T-129s. Other bikes I've looked at (Trek Remedy, Orange 5, Lapierre Zesty) have 140+mm of travel whereas the Whyte only has 120. Will this be an issue for riding off large ...
2
votes
3answers
307 views

Backpack size - 10L vs 14L

Looking at the Osprey raptor 10 or 14 litre hydration packs. Does anyone have any experience with these, and can suggest whether there is a significant advantage in the extra capacity offered by the ...
1
vote
1answer
56 views

Adapt V-brakes bicycle to disk brakes

I've been thinking in changing my v-brakes to disc brakes. Now that my rear v-break can't brake anymore I think that it is time change it. I've already seen this article. My frame is prepared for disc ...
5
votes
4answers
582 views

Bicycle Storage: Does Kvartal method need studs (or other suggestions)?

Does anyone know how http://www.apartmenttherapy.com/ikea-kvartal-easy-unobtrusive-137753 was done? Do I need to get them into studs? Here's some photos of my laundry room, I thought it would fit ...

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