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31 votes

Best E-reader for a touring bike?

How's this for ultimate lounging - you could add a projector that projects onto the sail, not only could you read ebooks while you cycle, but also watch the occasional movie! very nice ergonomics, no ...
Swifty's user avatar
  • 12.8k
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
15 votes

How to make a 10 year old electric bike battery work better?

As said, the batteries need replacing. They have a limited lifetime, regardless of use. You don't say if they are lead acid or lithium - if lead acid, they will certainly stuffed. If Lithium they ...
mattnz's user avatar
  • 51k
13 votes

Best E-reader for a touring bike?

A serious answer - consider an MP3 player and an audio-book instead. While sound-isolating headphones are bad for awareness, a single (ie mono) speaker can work quite well. Personally I use two ...
Criggie's user avatar
  • 126k
12 votes

Best E-reader for a touring bike?

I think it's obvious that you'll need a heads-up display in order to see the road through the text you're reading. Safety first and all that. So you're going to want to combine this project with a ...
Adam Rice's user avatar
  • 30.1k
11 votes

Is an IP68 rating sufficient to protect a phone during a 12 hour ride in heavy rain?

It should be. That's how I navigate on all my rides, wet or otherwise (phone on the bars). I've done this for a few years, but not completely without incident. Some tips: Make sure all port covers ...
Chris H's user avatar
  • 59.9k
11 votes

Best E-reader for a touring bike?

What is the best E-reader to use on a touring bike? What will mount well on a drop bar, withstand the vibration, and not jiggle so much that you can't read it? Something like Google Glass (yes, The ...
David D's user avatar
  • 21.9k
10 votes

Are dynamo hubs specific to particular lights?

Speaking in terms of past few decades to current generator hubs and lights, mostly they are interchangeable, with some qualifiers and exceptions. Almost all current hubs and lights are based around 6 ...
Nathan Knutson's user avatar
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
  • 32.7k
9 votes
Accepted

what considerations for safe storage/use of electronics in cold weather?

I navigate on my phone in all UK weather conditions, and certainly see the effect on battery life. It's less obvious on my rechargeable lights, but it's there. One thing to note is that old ...
Chris H's user avatar
  • 59.9k
8 votes

Has anyone successfully changed the battery in a Knog Blinder Mini Dot?

I found this which suggests that you'll have to open it by force - I'd try a razor saw if there's no obvious edge to pry. You may not need to replace the battery - if there's a protection circuit ...
bertie's user avatar
  • 385
8 votes
Accepted

Are there any electronic shifters that decide front/back for you?

SRAM eTap has a mode for this. It’s called Sequential Shift Mode: Sequential Shift Mode simplifies the shifting experience by automatically controlling the front and rear derailleur as you upshift or ...
Michael's user avatar
  • 28k
7 votes

Are there any electronic shifters that decide front/back for you?

The Shimano di2 system does this if you want. Using their app you can program the buttons to sequential shift 2, which I am using. You can choose where the computer shifts the front chainring and ...
Ross Millikan's user avatar
6 votes
Accepted

Electronic shifting for planetary gear hub

Rohloff has developed electronic shifting for their hub; Shimano offers an electronic-shifting add-on for Alfine. I'm not aware of any such from SRAM or Sturmey-Archer.
Adam Rice's user avatar
  • 30.1k
6 votes

How to make a 10 year old electric bike battery work better?

There are two parts to this question A 10 year old bike that has been out of use for a while Check tyres for cracking and flaking. Inflate, and if the tubes don't hold air then replace them (...
Criggie's user avatar
  • 126k
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

what considerations for safe storage/use of electronics in cold weather?

There are a few aspects to consider, especially for batteries, I'm assuming that most of your devices are using lithium-ion packs, so let's focus on this type of battery: Battery temperature ranges 0°...
DoNuT's user avatar
  • 4,496
5 votes

Is an IP68 rating sufficient to protect a phone during a 12 hour ride in heavy rain?

You’ll be fine assuming you have a recent phone. They’re entirely glued and sealed shut on the inside, and there’s no battery hatch or anything to worry about either. I ride with my iPhone 7 (only ...
MaplePanda's user avatar
  • 15.7k
5 votes

Resetting unknown E-Tube Passkey

You can reset the Wireless passkey for 11-speed Di2 - even if you don't know the current one - by connecting your bike to a windows computer/laptop using the charger. If you're on 12-speed Di2, you ...
Terry Seidler's user avatar
4 votes

Can I charge an ebike from another ebike battery?

Yes in theory but the gain is not practical. You’re better off swapping batteries than trying to jury rig something. Let’s do the calculations. You note that the AC charger puts out 36VDC at 2 ...
RoboKaren's user avatar
  • 29.2k
4 votes

Can I charge an ebike from another ebike battery?

Here is a video I found which is very detailed and shows how to add a second battery to your bike: Video: How To Add 2nd Battery to the Fiido D2 Here's the link to the battery which was recommended ...
NoCo Rider's user avatar
  • 1,379
4 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 ...
Criggie's user avatar
  • 126k
4 votes

what considerations for safe storage/use of electronics in cold weather?

Devices need to be checked individually. For instance, there are ruggedized mobile phones certified to work up to -10°C (here for instance). This is the same temperature for that the battery of my E-...
nightrider's user avatar
  • 7,879
4 votes

what considerations for safe storage/use of electronics in cold weather?

For electronics, also think about condensation: When you bring your very cold electronics in a warm environment, like a hotel room... or a warm humid environment like a tent with someone breathing ...
bobflux's user avatar
  • 1,784
4 votes

what considerations for safe storage/use of electronics in cold weather?

Dynamo lighting should presumably be largely unaffected by cold. Usually true, but some (especially rear) lights cheap out and use batteries for the stoplight. The theory is that battery is (or at ...
juhist's user avatar
  • 19.3k
3 votes

Is an IP68 rating sufficient to protect a phone during a 12 hour ride in heavy rain?

I'd never trust the ratings - after all if it fails to survive, you're up for a new phone. There's no guarantee it will perform. My phone is a samsung S5 Active, with a similar waterproof "...
Criggie's user avatar
  • 126k
3 votes
Accepted

Is it possible to add a TT shifter to Di2 junction box?

Yes, of course, that's possible. You just plug the cables into the brifters. Peel the grip-covers forward and you'll see unused ports underneath. Those may be used for sprinter buttons or for climber ...
Carel's user avatar
  • 8,309
3 votes

Lights wiring polarity and wire marking

White stripe is ground. Consistency is a virtue, and Schmidt's obvious decision tells us the industry default. In principle, the two conductors are interchangeable, because AC. However, in the reality ...
Graham Ross's user avatar
3 votes

RPM regulation of direct hub motors

adding to Chris H 2018-04-30 post... I'm going to take a stab at some basic math... BLDC motors can put out their rated power at high RPM partly due to air cooling enhanced by the high RPM (like ...
Robert Monk's user avatar
3 votes

AC dyno light on battery pack?

If the AC/DC convert is a simple rectifying bridge plus filter and voltage stabilizer, it should work with a direct current source as well. The only question is how many batteries connected serially ...
Grigory Rechistov's user avatar

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