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Adding a second chainring to a 1X

I have a 1X gravel bike with an 11-46 cassette and a 40T chainring. This gearing works for most of my riding but there are times when I'm doing some serious climbing that it would great to have one or ...
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  • 1
0 votes
0 answers
10 views

Hydraulic interrupter brake levers

It has come to my attention that interrupter-style levers are available for hydraulic brakes now. By interrupter lever, I mean those levers which can be mounted to the same cable on an alternate ...
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  • 3,017
5 votes
4 answers
85 views

Should cyclist on a bike path separated from the road overtake each other on the right or on the left?

I am going to assume right side traffic for this question. Switch all the left and right if you are in the UK. If you are cycling on a road with or without a designated bicycle lane you should stick ...
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  • 173
5 votes
2 answers
161 views

What Causes Tubeless Road Tires to Blister?

Road tubeless setup, and have been happy with it for several years. In the past year I have had a couple of my tires blister either on the centerline of the tread or just slightly off it. In one case ...
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  • 151
0 votes
0 answers
22 views

Can I fit 25 MM tires on Bontrager Paradigm Comp 25 wheels?

I am switching from a tubeless 32mm tire to a 25mm tire set with tubes. The tubeless is messy and with the number of flats we experience I feel going back to tubes will be easier.
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0 votes
0 answers
14 views

Looking For Info On Dyno Crush BMX

I don't know anything about BMX bikes but I recently acquired a Dyno Crush and was hoping to get any information I can on it such as year it was made, information about Dyno, are the parts original, ...
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13 votes
3 answers
2k views

Are brake calipers directional?

I'm interested in putting a discs brake on the right side of a bicycle. The goal is to have dual front discs, similar to how motorcycles often use double front brake discs. I can buy or make a custom ...
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  • 3,017
2 votes
2 answers
57 views

alleviating localised pressure from pedal cage

I ride my Brompton in normal shoes with quill/cage pedals and half-clips: I've done 25-100 miles journeys, and occasionally find the balls of my feet get sore / toes go a bit numb. It feels as though ...
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  • 351
3 votes
1 answer
63 views

Can't index gears with both chainrings

I have a 2011 Lapierre sensium 3 which I bought new in 2012. It came with 2X10 Ultegra gears which have never really indexed well, needing 2 clicks to change direction. My bikes with 105s work ...
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3 votes
2 answers
223 views

What type of bikes have a steel frame with 135mm rear dropouts spacing?

I'm looking for a bike frame made of steel with a 135mm rear dropouts spacing. The reason is that I might have to cold set at ~ 138mm for a project. It could be a road bike, a mountain bike, or a ...
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  • 343
5 votes
1 answer
597 views

Brake mounting points very close to the rim

I have a bike that came originally with roller brakes. I would like to remove the roller brakes and install rim brakes instead. For the rear wheel (this question is only about the rear wheel) there is ...
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  • 460
3 votes
1 answer
35 views

SRAM X01 derailleur very slow to shift into two smallest cogs

I recently changed bikes and have my first SRAM derailleur. I'm relatively new to bikes (couple of years) but mechanically handy, and had no issues adjusting the Shimano XT derailleur on my last bike....
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  • 31
5 votes
2 answers
479 views

Does a z-shaped cone wrench exist?

This is a massive cone, and I was under the mistaken belief that if it remains perfectly smooth, I can either overhaul it yearly, or grind it with a Dremel and repack the grease every two years, and ...
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  • 4,039
5 votes
1 answer
65 views

Water in (tubed MTB) tyres for weeks after a riding through a ford - is it a problem?

I changed my MTB tyres yesterday for today's ride (lots of road and gravel, not much tricky stuff, and very dry, so I wanted the faster ones). That bike with the other tyres had last been ridden ...
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  • 44.9k
2 votes
3 answers
60 views

Chain clanking whenever I start to pedal

This issue started a few days ago and I'm not sure what is causing it. Anywhere from 5-30 seconds after starting off, I can hear a loud clanking sound coming from the drivetrain, and sometimes there ...
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1 vote
1 answer
47 views

Carrera impel im-1 Electric Hybrid Bike ridgid to suspension fork

Hi there I have the Carrera impel im-1 Electric Hybrid Bike this bike has been great so far but as far as living in a town not quite a city there are some bumps and curbs I would like to get over more ...
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5 votes
1 answer
157 views

Is it safe to ride on wheels with rusted spoke eyelets?

I bought an old Bianchi with 26" wheels and I’m finding it hard to find a replacement with max width 23 mm tires and an old 6 speed freewheel I was trying to true the wheels but the nipples where ...
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  • 1,447
1 vote
1 answer
43 views

Front wheel squeak

I am wondering what is the correct solution to this problem and if I am diagnosing the problem correctly. Recently, my front wheel started squeaking once per revolution of the wheel. I tried to ...
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  • 161
5 votes
1 answer
155 views

Is this a common failure mode for Nuvinci/Enviolo hubs? How do I fix it?

The cables coming out of the twist grip for my Nuvinci N380 went "sproing" the other day and I pedalled home frantically in low gear. This isn't the first time this has happened. On closer ...
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1 vote
1 answer
44 views

What components of the drive train are cross compatible between casette number of rings(10 / 11 speed)?

I have an old 10 speed road bike fitted with (Mostly) Shimano 105 groupset drivetrain. I'm looking to replace a few parts and I noticed that 10 speed 105 and Ultegra parts are not so easy to find, ...
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5 votes
2 answers
554 views

Do mountain bike cantilever brakes have different pull than road bike cantilever brakes?

I was discussing with a friend who worked at a bike shop for 4 years about switching my mtb flat bars to drops (either a horrendously awful or great idea) and they said I would have to replace my ...
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  • 101
2 votes
1 answer
93 views

Wheel not straight in dropouts - can this cause brake rub?

My front wheel is not straight in the fork dropouts. It's been like this since I've bought the bike second hand a few years ago. See pictures below. I've tried installing an identically sized wheel ...
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  • 353
3 votes
1 answer
79 views

Suspension bike

I recently bought a hyper plush 24 inch bike that says it has full suspension but only my rear suspension works I've seen other bikes for example an ozone 500 ultra shock it looks the same but mine is ...
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0 votes
1 answer
86 views

Can anyone identify this old German bike?

I found this old bike, it comes from Berlin, the brand is ACTIVE, but can’t find anything online about the brand. Is this worth putting 500 euro in to restore? Is the bike rare?
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3 votes
2 answers
585 views

Would you be able to use mountain bike/straight bar cable brake levers as auxiliary/inline brake levers on drop bars?

Really dumb question, but would this be possible, with or without practicality? Drill a hole in them, perhaps?
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  • 101
2 votes
2 answers
113 views

Capsize, wobble, weave - stability of bicycles

Some research into (uncontrolled) bicycle stability (e.g. Jason K. Moore, Human Control of a Bicycle, 2012) models the dynamic behavior of some bikes and determines "critical speeds" for &...
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  • 221
4 votes
3 answers
114 views

Carbon fork - removed exapnder plug before loosening stem

So I forgot about the correct procedure and removed the expander plug on my carbon fork before unfastening the stem's bolts (carbon-specific stem, 5 Nm, unscrewed stem right after removing plug, and ...
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  • 387
0 votes
0 answers
44 views

Shifting issue on road bike

Got given a BH Zapphire road bike, in good condition but rear gear cable was snapped. I have fitted a new cable but now got an issue. The gear will move up to the larger cogs fine, but then when I try ...
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4 votes
1 answer
111 views

Deriving formula for spoke lengths

I know that I can use online calculators or tables to determine spoke length. I also know that there are some pre-derived formulas for spoke length that I could use to calculate the spoke lengths or ...
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  • 3,017
1 vote
1 answer
38 views

Swapping BB and crankset between bikes

I have a 2001 DeVinci Santiago road bike, which has a Shimano 105 road triple crankset and an octalink BB. I'm about to buy a 2010 Masi Speciale CX, which has a Truvativ Touro compact double and a ...
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  • 170
4 votes
1 answer
85 views

How to use the 3rd brake on a tandem?

I found myself looking at tandems today and was surprised to find one with 3 brakes. A bit of further research found that a 3rd brake can be used as a drag brake on steep descents - especially when ...
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  • 12.5k
3 votes
2 answers
328 views

Searching a new city tyre for Two old bikes, one has 26x1,90 tyre on it and another has 37-622(28x1 3/8x1 5/8)

I have two old bikes. Without changing their rims, I want to make them city bikes which I will use for going to work. I prefer thin tires as much as possible. Could you help me to choose a good pair ...
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0 votes
1 answer
57 views

Shimano CS-HG31 vs HG41 8-speed Cassette

I need to replace my cassette and found out that there are two types that I can get for an 8-speed. I usually replaced the Shimano CS-HG41 by itself. However there is also the Shimano CS-HG31 8-speed ...
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5 votes
3 answers
2k views

Do rotational-symmetric-looking front lights usually throw half their light into oncoming traffic? How To dinstiguish?

Many front lights look rotational symmetric, also pretty powerful ones (>500 lumen). Is that usually the case? Or are there many that only look like that, but are still constructed to produce a ...
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  • 534
3 votes
1 answer
176 views

How to get Rear derailleur aligned and in correct position?

I have a shimano altus rear derailleur that won't go into biggest cog for gear 1 - it is two out so in the gear 3 cog. Would it be the limit screws needing adjustment or other? I have tried adjusting ...
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4 votes
1 answer
1k views

New bike is making rattling noise

Brand new specialized rockhopper 2022 is making rattling noise. Sample: Is this normal or could it be a manufacturing defect?
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  • 51
11 votes
3 answers
825 views

Bubbles in carcass/ casing of Schwalbe Pro One TLE

I noticed two small bubbles on the carcass of my rear tire. I am running the 32mm Schwalbe Pro One tubeless at around 4bar /60psi and it wasn't particulary hot when the bubbles appeared (~20°C). The ...
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  • 111
0 votes
0 answers
40 views

My left inner ankle and right side of my back muscles hurt [closed]

My left knee and left bone in pelvis hurt too
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  • 91
0 votes
0 answers
31 views

I have a 2009 Yamaha YZF-R6s with a R3 engine is it street legal in Alabama [migrated]

2009 Yamaha yzf-r6s with a r3 engine legal in alabama
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3 votes
1 answer
72 views

Cracks on tyres

Have cracks of tyres on two bicycles. See attached photos. Bicycle 1 (top), 2 (bottom). It isn't dry rot ( What are these cracks in the side of my bicycle tyre called? Does this mean that my tyre is ...
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  • 31
10 votes
3 answers
693 views

What can cause wheel spokes to snap in the middle?

While sitting outside with my bike next to me a spoke spontaneously snapped. What could have caused this? Even worse, after getting the spoke fixed and the wheel retrued at a bike shop, four more ...
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1 vote
1 answer
98 views

New tires are wonky

I recently replaced my hybrid road tires w tires a bit more knobby. Not gravel tires, but not smooth. Anyway, ordering online I got the suggested tubes that are super skinny. While they fit, they don'...
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  • 11
4 votes
5 answers
3k views

How does bike stay balanced when the gear is on the side not in the middle

I wonder why because my road bike has crank and rear gear on right side so I thought they might lean on right side?
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  • 91
4 votes
1 answer
1k views

Bike helmet expiration

I have a bike helmet, Specialized Align. By the manufacturer's sticker, it was produced in 2013. Most of the time, it has been stored in the garage, only saw a very light use (several hours in a month ...
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  • 143
3 votes
2 answers
253 views

What happens if I shift beyond the maximum ranges?

I have a sensah empire 2*11 speed brifters + front / rear derailleur. I noticed that when switching to gear -1 or 3 for the front derailleur / 12 for the rear derailleur, it makes a louder than normal ...
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  • 133
1 vote
1 answer
51 views

A bike-share system's website told me: "The subscriber is valid but the account is disabled." Why? (It turns out that my credit card had expired.)

I'm a member of Bike Share Toronto. This is one of various bicycle-sharing systems in various countries which use PBSC Urban Solutions as their technology provider. I went to the Bike Share Toronto ...
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1 vote
1 answer
118 views

Chain protector?

What is this complete bicycle chain guard or chain protector in the photo? It has a 3 mpb printed on it. Who makes or sells it? From How does a chain get filthy and how can you stop it from getting ...
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  • 11
1 vote
1 answer
37 views

Shimano SM RT800 rotors on BR-RX400 brakes

I just want to make sure that I can put the Ultegra ice-tech 160mm rotors on my gravel bike that currently has BR-RX400 brakes and SM-RT70 CL rotors. On Shimano website https://productinfo.shimano.com/...
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  • 11
-1 votes
0 answers
35 views

Need help identifying my Haro BMX by serial number

I have Haro chrome BMX that has serial numbers k50iy004329 can anyone tell me what year make and model this is.
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2 votes
1 answer
53 views

Shimano Alfine crankset Q Factor?

Do you happen to know what the Q Factor of the Alfine Crankset is? I've looked all over the web and can't find this piece of information. I'm interested in the single chainguard 42T version, and my ...
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