1
vote
4answers
113 views

Electronic bike keeps getting flat tire on the back

A month ago, I got my first flat tire on the back tire on my electronic bike and I have fixed it, it was a Nail. Yesterday I got it again, it was a hole in the whole tire, so I changed the tire and ...
2
votes
1answer
80 views

Can pedals not fit the crankset?

I just ordered and received my bike with FSA Tempo CK-200 crankset and Shimano Saint MX80 pedals (really good deal). Just received and it seems that they do not fit with crankset! The spindle on ...
1
vote
2answers
102 views

How can I assess my torque wrench?

I have owned a dynamometric wrench for two years now, and I got it second-hand in the first place. I fear that relying on its indication could be even less accurate than tightening by intuition. For ...
0
votes
0answers
56 views

Is a long, high angle stem safe to use with a carbon steerer?

I purchased a hardly used road bike someone else had built up for a deal a few weeks ago, and am a bit disappointed with the fit - it's fine for rides less than a couple hours, but too aggressive for ...
0
votes
1answer
96 views

Is it worth buying a RFLKT+ or is the RFLKT good enough?

Looking at Amazon, the Wahoo RFLKT is half the price of the Wahoo RFLKT+. What practical benefits would I actually miss out on if I just went with the Wahoo RFLKT? Any pros and cons of the two ...
1
vote
2answers
58 views

Inner tube problem [closed]

I ride on and off road on my MTB and most time I've had problems with those little dry spiky things from the bushes(sorry I don't know what they're called). I've had 2 flat tires so far and it's ...
0
votes
0answers
60 views

Small concavities on rims

Recently bought a pair of used zipp 808 clinchers and was a bit disappointed when after a closer look discovered a couple of small concavities (something like 1mm in diameter) on outer side of the ...
3
votes
4answers
773 views

Are older road bike parts compatible with newer standards? How do older and newer bikes match up performance wise?

I'm a big mountain biker and looking to get into road biking. However, I don't want to drop $1,500 on a new or relatively new road bike without being sure I'd want to stick with it. Anyway, I found ...
1
vote
3answers
161 views

(racer) Standard vs compact crankset: Increased leverage for same gear ratios true?

I'm a road and mtb regional racer about to have a go at my first road endurance nationals very soon. I'd like some educated scientifically validated answer on a matter that has been on my mind ever ...
0
votes
0answers
50 views

I have a few questions about frame repair, seat adjustments, and rims.

My bike is a Trek 1100 Aluminum Frame My bike has a few dings and scratched in the frame, and I want to get rid of them. So I was thinking I could get a powder coat or something ...
1
vote
1answer
54 views

Can I use a Brompton bike with a trailer like the Thule Chariot Cougar?

I wonder if I can use a Brompton bike with a trailer like the Thule Chariot Cougar? It uses the so called Thule Axle Mount and I wonder if it is compatible to the bike. At this point, it is just ...
1
vote
2answers
77 views

What gears should I go for?

I have a Trek road bike (although you might call it a hybrid since it has straight handlebars. I do about 3,000 miles per year on it for general health reasons (up to 30 miles at a time and averaging ...
1
vote
2answers
54 views

High speed electric-assisted bicycles [closed]

This question is about electric bicycle conversion kits. There are federal laws, state and municipal laws governing the use of e-bikes in the US. Most of them say, no more that 1000W, no faster than ...
1
vote
1answer
81 views

Computer Light For Nighttime Riding

I use a Wahoo RFLKT+ computer. It has a built in backlight for night riding, but to conserve the battery the light times out after a while (30 second default). Since I have a hub generator, I'd like ...
0
votes
1answer
55 views

How to carry Xtracycle by car?

What is the best way to mount an Xtracycle to the roof of your car? Xtracycle has a few suggestions particilary a Thule or RockyMounts Tandem rack. We have a Mazda CX-9 with factory cross bars. The ...
3
votes
2answers
122 views

What kind of grease is that?

So I just managed to remove the fork from the old frame I'm renovating. In the headset bearings, the grease looks odd! See these tiny metal balls? At least it looks like that... Is that on purpose, ...
3
votes
3answers
236 views

Making a Cannondale BadBoy ride softer

I have a Cannondale BadBoy with slick tyres, no suspension etc. On roads the ride is fine, but I do less of that these days and more along tracks (e.g. unmaintained paths, towpaths etc.). On ...
0
votes
0answers
47 views

Replacing crankset on early-'70s Motobecane 10-speed

I need a replacement crankset for my Motobecane Nomade 10-speed road bike (early '70s model), but am not quite sure what I even have at the moment and, once I know what I can use to replace it with, I ...
1
vote
1answer
46 views

What should I look for in a cyclo cross bike

This will be my first cyclo cross bike and I am already using the same techniques with my mtb. My question is what should I look for in it. Since the country I live in does not have any official brand ...
3
votes
2answers
133 views

How to identify lead paint?

I'm starting renovation work on an old bicycle. One of the things I want to do is a new paint job. I guess before that I'll need to sand the current paint off the frame. So I bought sandpaper. On the ...
1
vote
1answer
55 views

Shimano sora shifter no longer shifts

On my commute yesterday, I noticed that my right shifter was no longer 'clicking' when shifting my rear derailleur up into a larger sprocket. It still shifted fine, but I noted that I should look into ...
1
vote
2answers
77 views

Should I switch to a smaller chain ring?

I am back to cycling after 7 years absence due to injury and time commitments. When I started 3 months ago I weighed 20kg more (105 kg in total) than when I stopped. My target is to build fitness ...
1
vote
1answer
66 views

My rear cogs (not sure on the correct name) turn at force even when stationary.

I got a new bike and was riding it home and every so often it felt like the chain wasn't there and my feet pedal a little faster and then all of a sudden it would go back to normal. I looked in to ...
1
vote
1answer
73 views

Is it normal for a Derailleur pulley to “wobble” a little bit? Or does that mean it's time to replace

I'm trying to repair my bike for the first time, so i'm learning. It's a shimano deore set for a flat handle road bike. It won't stay in gear --- it keeps shifting while i ride, especially in the ...
0
votes
3answers
83 views

Cannot locate mysterious crunching/grinding noise

I've seen other posts on this general subject. My BB seems tight, new chain installed by bike shop, gears all checked ... I am second owner of this Raleigh so no knowledge of past usage or ...
1
vote
1answer
119 views

Adjusting brake rub on a mini-v brake (Giant Propel)

I have a Giant Propel and the front left brake is constantly rubbing and sticking against the wheel. I've tried adjusting the bolt highlighted below, which I believe is the spring tension, but ...
2
votes
1answer
109 views

How to turn off segments on edge 510

Recently I've been getting notifications on my edge 510 of an upcoming segment (& and display when riding through it) - I can turn this off by hitting the red cross on screen when it comes up, but ...
1
vote
3answers
100 views

Why not upgrade?

I've got a 1997 Trek 1220 that I picked up relatively cheaply. When purchased, it was freshly tuned with new cables brake pads, chain, cassette, and also with a new wheelset. The cassette had been ...
8
votes
3answers
258 views

Is a car “perfectly entitled” to turn left around cyclist

(I'm in the UK so we drive on the left) This morning a driver pulled up alongside me (to my right) at a junction. As soon as a gap came available, I pulled out to turn left and he did the same, ...
-1
votes
0answers
44 views

Convert v-brake to disc brake? [duplicate]

I have a Scott Scale 960 Mountain Bike and would like to replace the existing block brakes to Discs. The frame and wheels are compatable but what I am not certain about how is the wheel position ...
1
vote
3answers
85 views

Can't downshift rear derailer

I'm trying to fix my wife's bicycle which sat out all winter. I can't get the rear derailer to downshift from the twist grip shifter. I have inspected and cleaned and lubricated the cables, nothing ...
0
votes
1answer
99 views

Flat tire keeps occurring while bike is stationary. MYSTERY

I keep changing my tube. It get's a hole right near the base of the valve. I've checked the rim, there's nothing sharp. there's nothing sharp in the tire (the hole's on the inside anyhow). and it ...
3
votes
2answers
186 views

Validity of UCI motor concerns

In the wake of the seemingly renewed post-race examinations for 'mechanical doping' by the UCI, I was wondering if anyone has experience with the motors in question (like the Vivax Assist - thanks, ...
7
votes
1answer
173 views

Why fixed-gear for track racing?

I have what seems like a really simple question, and yet I didn't manage to find the answer. Why do track races require fixed-gear bicycles, as opposed to single-speed freewheeled bicycles? Is it ...
3
votes
1answer
83 views

bicycle pedal design specifications for threads

Where can I get information on the various different types of threads used in bike pedals as each manufacture has its own specifications? Different manufactures of pedals have different threads and I ...
0
votes
2answers
155 views

Is any major manufacturer working on a 12 speed group?

So, 11 speed groups are great, but as everyone knows, they are old news and manufactures are constantly innovating and upgrading to sell "this year's" new parts. 11 speed has been around for a ...
0
votes
3answers
52 views

Ideas for consistently popping tubes

I ride a cyclocross about 50 miles a week. About half of the mileage is spent on roads, the other half on single track trails. In the space of 3 weeks I have had the tubes pop 5 times. Once the back ...
1
vote
0answers
65 views

30's-40's bike, make and model

hello, Any info on this bicycle, it make, model and possible year. The young man was born in 1931
1
vote
1answer
88 views

converting stem shifters to brifters

I'm new. I'm 26, from the UK and until last year I'd never cycled more than 10 miles before. Then in September I cycled 2700 miles from Maine to Florida. It was great. I've just bought a Dawes ...
0
votes
1answer
34 views

Can I convert from a 52/42/30 crankset to 50/39/30?

I need to update my 9 speed triple crankset at 52/42/30, and those combinations seem difficult to find when I'm also looking to upgrade. A more common teeth combination seems to be 50/39/30, but I'm ...
-2
votes
0answers
50 views

I found this BMX need info

I found this bmx bike. It has strongman decals and has a looptail. Does anyone know any info on this bike?
2
votes
0answers
54 views

Bottle dynamo wiring a headlight and taillight on 1980s bike

I'm restoring a 1980 DBS Winner bicycle, and I'm having trouble wiring the dynamo to the headlight and taillight. As a disclaimer, I know very little about electricity and wiring. The dynamo has two ...
5
votes
4answers
132 views

Creaking when in the saddle

I know there are about a million questions on here about creaking while pedaling, but I haven't seen one that relates...apologies if I missed one. I bought a 2011 BMC Streetracer SR02 last year; ...
2
votes
1answer
94 views

Is this article accurate? If so, why is the hype about loosing the FD on enduro bikes?

I read an article on full suspension bikes, explaining antisquat and pedal kickback. They say the bicycle is the only vehicle, where the gear affects the suspension characteristics. This is great, ...
0
votes
0answers
22 views

1987 Schwinn Tempo Maillard hub rear axle

I have a 1987 Schwinn Tempo with 32h Maillard "Sealed mechanism" hubs. (I'm still confused about that phrase, maybe it's a bad translation? They're completely unsealed cup-cone hubs). The axle is ...
6
votes
1answer
549 views

Why exactly did Boardman manage a further distance than Wiggins?

In light of Bradley Wiggins' recent hour record of 54.526km, I heard a lot about how Chris Boardman has the absolute record of 56.375km. What I didn't hear and (hence my question) what I want to know ...
0
votes
2answers
50 views

Can an imperfect hub make a disc rotor rub?

I had a 160mm disc rotor on a road bike that was rubbing a bit in one spot, not severely, but enough for me to notice. I've tried to true it a few times over the past couple months with little ...
2
votes
3answers
116 views

Mountain Biker wanting to change to cyclo or road? Which one? [closed]

I ride an inexpensive Trek modified mountain bike and I spend some of my ride on the road and some on the canal, which of course is rather flat. Sometimes at the mid point of my ride I will decide to ...
1
vote
1answer
71 views

How can I tell where the damage is in the hub?

I am pretty new to bicycle maintenance. I've replaced brake cables, and patched tubes, but not much else. This week my plan was to clean up my back hub, because the wheel hadn't been turning as ...
1
vote
0answers
53 views

Considering Cassette Upgrade [duplicate]

I'm considering upgrading from a 9-speed, 12-26 cassette on a 2006 Lemond Alpe D'Huez. I have a triple front chairing with a Shimano 105 groupset, with one exception - an Ultegra rear derailleur. ...

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