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. ...
Art Gertner's user avatar
  • 2,597
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 ...
Nathan Knutson's user avatar
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 ...
user1908704's user avatar
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 ...
ojs's user avatar
  • 22k
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 ...
Rider_X's user avatar
  • 30.6k
11 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 ...
Nate W's user avatar
  • 9,262
11 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 ...
Paul H's user avatar
  • 4,102
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 ...
David Richerby's user avatar
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 ...
Weiwen Ng's user avatar
  • 31.3k
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 ...
Weiwen Ng's user avatar
  • 31.3k
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 ...
Batman's user avatar
  • 46.2k
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 ...
Klaster_1 Нет войне's user avatar
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

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 ...
Batman's user avatar
  • 46.2k
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 ...
RoboKaren's user avatar
  • 29.2k
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 ...
Rеnаud's user avatar
  • 20k
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, ...
Argenti Apparatus's user avatar
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 ...
Swifty's user avatar
  • 12.8k
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 ...
Nobody's user avatar
  • 1,780
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: ...
paparazzo's user avatar
  • 15.7k
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 ...
dr_strangeloop's user avatar
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 ...
Criggie's user avatar
  • 124k
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 ...
Markb's user avatar
  • 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 ...
Kibbee's user avatar
  • 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 ...
Andy P's user avatar
  • 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 ...
juhist's user avatar
  • 18.7k
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 ...
David D's user avatar
  • 21.3k
6 votes

What characterizes a future-proof ebike drive system?

If one wants to buy/build an ebike that is the most future proof as it can get, I would recommend to stay away of the following: Closed ecosystems Popular manufacturers of those systems are Shimano, ...
olliebulle's user avatar
  • 4,109
5 votes
Accepted

Is it possible to increase maximum seatpost insertion length by filing down a seat tube bottle cage mount boss?

Drilling the seat tube is a bad idea, for the reasons you've indicated. Very rarely a bike shop will have a tool for reaming a seat tube (more usually framebuilders have those) that can to the task in ...
Móż's user avatar
  • 23.5k
5 votes
Accepted

Is it possible to convert a suspension fork to rigid by drilling it?

As others said don't drill the fork, as others said go for a new/used fork they come by cheap in most countries when no suspension is needed. But if you still want to go DIY I will give you a couple ...
dmb's user avatar
  • 818

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