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.
...
- 2,922
17
votes
Accepted
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 ...
- 87k
15
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 ...
- 274
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 ...
- 22.3k
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 ...
- 4,552
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 safely drill a hole from the crown into the steerer in my carbon fork?
To state the obvious, when you drill holes in something, you weaken the structure. Also, if your technique is off or your bit is blunt, you might fray the carbon plies - and that could cause a ...
- 35.2k
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 ...
- 35.2k
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 ...
- 5,708
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 ...
- 46.4k
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 ...
- 29.4k
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 ...
- 22.8k
7
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, ...
- 4,169
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, ...
- 75.9k
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 ...
- 12.9k
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 ...
- 1,779
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 ...
- 129k
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 ...
- 21.9k
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 ...
- 18.4k
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 ...
- 20.5k
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 ...
- 22.9k
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 ...
- 818
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 ...
- 23.6k
5
votes
Can I safely drill a hole from the crown into the steerer in my carbon fork?
IF you do drill a hole, I would suspect that going straight down the steerer tube (ie radially out of the tyre) would be better than drilling in through the side of the steerer tube.
Firstly, you're ...
- 129k
5
votes
Cutting a slot in a quil stem
For such a basic stem, i don’t see a problem with this provided you round the top of the slot just like the old one to limit stress risers and note the new minimum insertion depth. You may have to ...
- 15.1k
5
votes
Accepted
Mount 29'' wheels on Cube Reaction TM 2018
There are two problems with such operation: clearance and geometry. For the clearance, simply measuring if there's enough space is sufficient, but it's not worth it as geometry is actually the problem....
- 22.8k
5
votes
Boardman Comp Hybrid 2012 - Suggestions for cheap way to get much lower gearing?
If your numbers are correct, you have a 34:32 gear combo, which gives you 28.9 gear inches assuming 622mm wheels at 35mm diameter. You have 123 gear inches in 50:11.
If you have a current bike, work ...
- 129k
Only top scored, non community-wiki answers of a minimum length are eligible