All Questions

1 vote
1 answer
16 views

Optimizing rear derailleur cage length

So I'm doing the last bits of research which parts I'm getting for my next build (for bikepacking). With a 30/46t or 30/44t crankset and 9sp 11-42 cassette in theory I'd need a rear derailleur with a ...
Tork's user avatar
  • 11
1 vote
0 answers
17 views

How do I evaluate flat MTB pedals re poking foot soles?

After accumulating more pairs of cycling shoes than would be warranted by someone riding 3x or 4x my current yearly mileage, I'm trying to be a little more cautious while shopping. I'm now aiming for ...
Sam7919's user avatar
  • 9,708
0 votes
0 answers
31 views

Ring of holes on the tube opposite the valve; what's the mechanism for puncture?

I just replaced a tube on my back wheel and it's got a slow leak. I can pump it up and ride for an hour or two, but when I come back the next day it's completely deflated. I did the "submerge ...
Lucas Myers's user avatar
3 votes
4 answers
65 views

Bike post slips down

I have a metal bike post and frame and annoyingly after a ride I find my bike post slides down. its the stock seat so i'm sure it is the correct size. Its a quick release so it is quite hard to ...
John Tracey's user avatar
8 votes
6 answers
1k views

Have hydraulic shift systems been developed?

Bowden brake cables are being gradually replaced with hydraulic brakes on enthusiast bicycles, yet Bowden shift cables are being replaced with electronic systems. (1) Has anyone developed hydraulic ...
Sam7919's user avatar
  • 9,708
2 votes
1 answer
566 views

Bosch 625Wh: How to Charge Spare Battery At Home?

I have an extra Bosch 625Wh for the Bosch Cargo Line Cruise (Gen4) motor. I'd like to charge this extra battery at home while the other one is in use. I haven't found any device I can buy to do so. Is ...
Gaia's user avatar
  • 123
8 votes
4 answers
636 views

Using a dynamo hub to run ONLY rear lights

I have a trailer that I use regularly at night and I want to put some dynamo-powered lights on it. I have an old Shimano DH-3N80 hub and was thinking of building a 16" wheel with it and getting ...
Matt's user avatar
  • 181
6 votes
2 answers
933 views

Is a stiff chain after hot wax application a sign of a correct wax application?

In many hot wax application tutorials, it is advised that, after removing the chain from the wax bath and having allowed it to cool, the chain should become stiff, requiring manual movement of the ...
Rеnаud's user avatar
  • 21.8k
1 vote
1 answer
24 views

What is the appropriate torque for an IRD setback seatpost and what could be done to prevent it from slipping?

The system is a single-bolt, M8 size. Generic Park Tool advice would suggest 20-24 Nm---does anyone have more specific suggestions/experience?
Nik Kharlamov's user avatar
1 vote
1 answer
65 views

Please help to identity bike model/brand

Please help me to identify what model/brand this is, I have pic searched but can't find anything
Patrik La's user avatar
4 votes
3 answers
359 views

How do I take apart Wellgo pedal (to lubricate bearings)?

I want to take apart a pedal on my sons Frog 55 kid's bike as there is play in the pedal and it is squeaking. While I am at it, I want to re-grease the bearings. I am, however, not able to figure out ...
Lars Høyrup Jensen's user avatar
3 votes
1 answer
90 views

how to proceed with bike damaged by airline in cardboard bike box

The front of my bike box was ripped off and the box itself was twisted, so it appears it was placed under an extremely high load. Upon building my bike back up, the frame and fork are scratched and ...
John Doe's user avatar
  • 505
6 votes
3 answers
944 views

Are foldable tires less puncture resistant?

I like buying stuff on Amazon and most of the tires there are foldable. I bought a GP 5000 foldable tire and kept getting flats maybe 1-2 per month sometimes. I stopped using them and went back to ...
Lightsout's user avatar
  • 1,797
1 vote
1 answer
76 views

Where should I install shift cable rubber shields?

I installed the two parts shift outer cap with long tongue, and rubber shield as shown below, but I'm not absolutely sure this is right. If I put the rubber shield (the one on the right in the ...
Sam7919's user avatar
  • 9,708
3 votes
1 answer
206 views

Is this SRAM X7 bent?

Lower jockey wheel seems to not be in line with upper so wondering if if was in an accident or bent somehow. If so, anything likely needed besides a new derailleur?
Dantezo Ribaldi's user avatar

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