19
votes
Accepted
Is it safe to drill a cable exit hole in a seatpost?
I suggest to avoid drilling holes in the seatpost alltogether. Just find a seatpost that has an opening at the top, there are plenty available usually on older seatposts with two-bolt mounting system.
...
- 2,254
16
votes
Can I safely drill a hole from the crown into the steerer in my carbon fork?
When carbon manufacturers and fabricators put holes in things, they're thinking about:
Whether disrupting the continuity of the carbon layers in that way will leave it strong enough.
Whether there ...
- 81.9k
14
votes
Accepted
What's this part of the bike, and is it safe to alter it?
What he hammered down is the star nut. It's a gription (yes I made that word up) device that serves as an anchor point in the steer tube to allow the top cap to properly compress the headset during a ...
- 9,938
13
votes
Accepted
What characterizes a future-proof ebike drive system?
China has developed an ecosystem of interchangeable parts. While there is typically one proprietary interface (controllers communicating with displays), much of the interconnection is using simple ...
- 254
12
votes
Accepted
Derailleur On A Single Speed
The derailleur is there to act as chain tensioner. In a frame intended for derailleur the rear wheel can't be moved to tighten the chain, so a separate spring-loaded chain tensioner is needed. The ...
- 21.8k
12
votes
Accepted
Can I modify a slightly too big bike?
Try stopping with one foot down, leaning the bike over and leaving your dominant leg on the pedal with the pedal forward and up ready for a power stroke. By leaning the bike over you can get lots of ...
- 30.5k
12
votes
can only use right hand to brake reliably, due to disability - safer/possible to modify bike?
Generally speaking your off hand should be the front brake, so if you're right handed the front brake should be the left. They can be set up either way, though, especially if you're using cable-driven ...
- 9,199
10
votes
Accepted
To Cold Set or Not To Cold Set?
No need to cold-set.
I have a BSO with the same problem. The rear dropouts are about 6mm too close for the hub. I can just flex them apart and let the hub in.
The misalignment of the dropouts would ...
- 5,690
10
votes
Is it possible to convert a suspension fork to rigid by drilling it?
DO NOT DRILL HOLES IN YOUR FORKS
That would weaken them substantially and run the risk of them breaking under stress (e.g., when you hit a pothole). A broken fork will probably put you in the ...
- 17k
10
votes
Can I put a suspension fork on a hybrid bike like the Kona Dew?
No. The Dew is not a mountain bike and its fork is not a rigid mountain bike fork.
The different between a fork like the Dew has and a rigid MTB fork is the axle-to-crown distance. Most rigid MTB ...
- 3,474
9
votes
Accepted
I want a bolt on crank, but dunno what terminology to use to find one
TL;DR: The search terms to use may be "kidback adapter," "child stoker adapter," or "child stoker kit."
Googling for "tandem child bicycle crank" produced a ...
- 29.7k
9
votes
Can I safely drill a hole from the crown into the steerer in my carbon fork?
I would assume it is not safe to drill into carbon, not at that location. I am not saying that it is not safe, only that I strongly suspect so and that I am not willing to assume otherwise.
To state ...
- 29.7k
8
votes
Accepted
Identifying small, moped-like bike
Looks like 70s Schauff Elite. Compare it with bike here, the frame has very distinct shapes. A similar bike is also listed at the official (correct me if I'm wrong) Schauff website, the picture under ...
- 5,709
8
votes
Am I too tall to bother modifying my old trek?
If you adjust a bike to the max and its still significantly too small, you should sell the bike and get a new bike.
There are extra long seatposts, and extra long quill stems and what not, but in ...
- 46.1k
8
votes
Accepted
Downgearing with a road triple
The triple is irrelevant. So long as the derailleur has enough capacity(which is determined by the size of the chainrings and cogs in the back; this is basically controlling how much chain length ...
- 46.1k
8
votes
Slamming my stem considerations
No, just move any spacers from below the stem to on top of it.
Don't cut the steerer in case you want to sell the bike later, or even if you change your mind later.
7
votes
Accepted
Pedal assist sensor possible for front wheel motor on ebike?
Yes, you can have pedelec sensors (PAS) for a front-wheel hub. We're not a shopping site but you just have to go to one of the larger vendors of kits to find one that has a front wheel PAS.
PAS ...
- 29.1k
7
votes
What characterizes a future-proof ebike drive system?
Future-proofing can be understood two ways:
the user is able to replace broken components by standardized ones.
spare parts will be available for the lifespan of the bike, possibly at a cost.
The ...
- 17.6k
6
votes
Convert city bike to road bike
Depends what you mean by city bike and road bike.
If you mean converting a bike with flat bars to one with drop bars there are issues. Flat bar bike frames are typically longer than drop bar frames, ...
- 75.5k
6
votes
how to increace the friction between tyre and road
Reducing friction (or grip in layman's terms) would cause your wheel to simply spin in circles when you pedal and you would fall down. Increased friction between the tire and the riding surface is ...
- 9,938
6
votes
can only use right hand to brake reliably, due to disability - safer/possible to modify bike?
I was amazed the right is the front but found this
Australian Standard AS1927 – 1998 Pedal Bicycles – Safety
Requirements, page 16 Section 2.14 Braking System 2.14.2.1 states the
following: ...
- 15.6k
6
votes
Can regular bike forks be modified to allow front drivetrain setup?
To cold set a regular fork by 30+ mm would no doubt weaken it far too much to use. The better starting point would be something like a 135 mm fat bike fork, common sizes are also listed in the Sheldon ...
- 12.7k
6
votes
Modification for cycling with one functioning hand
So I don't know much about the disease you mentioned - but if the symptoms are caused by the strain on the wrists and hands, then I have a perfect but expensive solution: Switch to a recumbent. There ...
- 1,760
6
votes
Can I safely drill a hole from the crown into the steerer in my carbon fork?
I faced exactly this question about a year ago. I did all the internet research I could, talked to bike mechanics and emailed fork builders and repairers. The answer that emerged from all this was a ...
6
votes
increase stem height of giant tcr advanced 2
Yes.
Some stems can be flipped to give an upward angle instead of a downward one - this may be a zero-cost change for you.
You can replace the stem with one that has a higher angle. Be aware that ...
- 121k
6
votes
Adding a second chainring to a 1X
Ok, after a considerable amount of research and frustration I have found the answer: replace my FSA crankset with a SRAM Rival 1 and 36T chainring. This will give me an additional two lower gears with ...
- 151
6
votes
Can I put a suspension fork on a hybrid bike like the Kona Dew?
There are gravel forks with smaller amounts of travel like the Rudy XPLR that are meant to add a small amount of suspension to gravel bikes that didn't come with suspension.
If I'm reading the ...
- 21.7k
6
votes
Can I put a suspension fork on a hybrid bike like the Kona Dew?
Would it be worth while
No. You already have relatively high volume tyres which do a far better job of smoothing small high frequency vibration like you may find on the typical surfaces you would ...
- 18.3k
6
votes
Is it safe to drill a cable exit hole in a seatpost?
I would consider this unsafe. Even bottle cage screw holes on bike frames are reinforced, even though bike frame is a redundant structure (if one tube fails, the rest will allow safe temporary ...
- 18k
6
votes
Is it safe to drill a cable exit hole in a seatpost?
Safety is a scale with completely unsafe on one end and completely safe on the other end.
Just riding a bike is somewhere between completely unsafe and completely safe.
Not drilling a hole is ...
- 20.7k
Only top scored, non community-wiki answers of a minimum length are eligible