Search found 125 matches

by StephenW
11 Jul 2019, 11:33am
Forum: Bikes & Bits – Technical section
Topic: Six bolt adapters for centrelock hubs
Replies: 28
Views: 952

Re: Six bolt adapters for centrelock hubs

A quick google tells me that Araldite has a shear strength of about 2500 psi. At a very rough guess, the surface area of the splines might be 2 sq. inches. A strength of 5000 pounds seems like plenty? The rotor would be utterly destroyed before you could apply a lateral force that high I think. I co...
by StephenW
10 Jul 2019, 10:54am
Forum: Bikes & Bits – Technical section
Topic: Six bolt adapters for centrelock hubs
Replies: 28
Views: 952

Re: Six bolt adapters for centrelock hubs

The lockring gets in the way. Yes, this is the problem. I got the adapter partly so that I could take the disc off using only a torx key. This could be useful when taking the bike on a plane. I wouldn't want to rely on a disc of mine solely held on to the hub by epoxy. Well, the splines should be t...
by StephenW
9 Jul 2019, 8:30pm
Forum: Bikes & Bits – Technical section
Topic: Six bolt adapters for centrelock hubs
Replies: 28
Views: 952

Re: Six bolt adapters for centrelock hubs

Would it be OK to glue the adapter onto the hub with epoxy? Then it would be possible to dispense with the lockring. This would allow the disc to be removed using only a torx key, without needing the special lockring spanner.
by StephenW
26 Jun 2019, 12:31pm
Forum: Campaigning & Public Policy
Topic: Cyclist 50% to blame for hitting pedestrian
Replies: 199
Views: 13243

Re: Cyclist 50% to blame for hitting pedestrian

I think it is worth considering the environment* in which this happened. I'd like to consider two aspects. Firstly, as I understand it, this is a junction in central London which is busy with pedestrians and motor vehicles, yet no green man is provided. This is pretty useless IMO! I think it is like...
by StephenW
6 May 2019, 12:48pm
Forum: Bikes & Bits – Technical section
Topic: the art of bicycle folding/packing for transport; modifications for rinko etc.
Replies: 77
Views: 3048

Re: the art of bicycle folding/packing for transport; modifications for rinko etc.

The Rinko idea seems quite nice, although I'm not sure about regularly taking the headset apart. I feel like a headset, especially a threaded one, is the kind of thing you want to get set right, and then leave alone as much as possible? I thought this video might be of interest to some (it's a foldi...
by StephenW
30 Apr 2019, 9:57pm
Forum: Campaigning & Public Policy
Topic: Painted cycle lanes may make roads more dangerous for bike riders
Replies: 117
Views: 4759

Re: Painted cycle lanes may make roads more dangerous for bike riders

Well, I can see that there are some potential issues with surveys. However, if we reject all surveys out of hand, what are we left with? How do we find out what the main barriers to more cycling are? Intuition? Anecdote? Poking a finger in the air? Surely the thing to do is to look at each study in ...
by StephenW
27 Apr 2019, 5:18pm
Forum: Campaigning & Public Policy
Topic: Painted cycle lanes may make roads more dangerous for bike riders
Replies: 117
Views: 4759

Re: Painted cycle lanes may make roads more dangerous for bike riders

Certainly the car has replaced a bicycle as the main mode of travel to work, shop or pleasure ground. This is due to many reasons - many. Those reasons may include "lack of cycling infrastructure" but that will be a teen-weeny reason compared to ... There may indeed be many different reas...
by StephenW
27 Apr 2019, 4:57pm
Forum: Campaigning & Public Policy
Topic: Painted cycle lanes may make roads more dangerous for bike riders
Replies: 117
Views: 4759

Re: Painted cycle lanes may make roads more dangerous for bike riders

Quite - so exactly what I said. No, not exactly! There is an important distinction between ...assuming unsegregated roads correspond to whichever performs worse. and what Schepers et al (2011) actually did. If you have another look at my post then this will hopefully become clear. To be clear, I'm ...
by StephenW
22 Apr 2019, 12:45pm
Forum: Campaigning & Public Policy
Topic: Painted cycle lanes may make roads more dangerous for bike riders
Replies: 117
Views: 4759

Re: Painted cycle lanes may make roads more dangerous for bike riders

Cars in London (and other urban spots) cause high levels of pollution, as well as squashing and maiming many pedestrians, cylists and, of course, the car drivers themselves. A superhighway does very little if it just makes you feel a bit safer - especially if (like the pedestrians) you are still su...
by StephenW
19 Apr 2019, 10:52am
Forum: Campaigning & Public Policy
Topic: Painted cycle lanes may make roads more dangerous for bike riders
Replies: 117
Views: 4759

Re: Painted cycle lanes may make roads more dangerous for bike riders

infrastructure doesn't cause conflicts at junctions, Of course it does (again assuming that you use "infrastructure" to mean "segregation" for the purpose of argument) by its very nature. Conflicts between cycles going straight on and vehicles turning into side roads exist alrea...
by StephenW
19 Apr 2019, 10:36am
Forum: Campaigning & Public Policy
Topic: Painted cycle lanes may make roads more dangerous for bike riders
Replies: 117
Views: 4759

Re: Painted cycle lanes may make roads more dangerous for bike riders

As to London and it's superhighways ..... Perhaps they did make cycling marginally safer - although there are still regular deaths and maimings. Their purpose is not only to make cycling safer, it is also to make it more pleasant. When I am cycling in London, when I get onto one of the newer "...
by StephenW
19 Apr 2019, 10:28am
Forum: Campaigning & Public Policy
Topic: Painted cycle lanes may make roads more dangerous for bike riders
Replies: 117
Views: 4759

Re: Painted cycle lanes may make roads more dangerous for bike riders

StephenW wrote: there were too few intersections with no infrastructure to be valid. So what they are actually comparing is a very specific arrangements of segregation (one-way track bent away from the road) to other segregated layouts then simply assuming unsegregated roads correspond to whichever...
by StephenW
19 Apr 2019, 10:15am
Forum: Campaigning & Public Policy
Topic: Painted cycle lanes may make roads more dangerous for bike riders
Replies: 117
Views: 4759

Re: Painted cycle lanes may make roads more dangerous for bike riders

I think it was clear from my comments that I had read more than the abstract, That's good. Just wanted to check we were talking about the same paper. I emailed Paul Schepers, and the reference to Schepers et al (2013) is indeed a typo, it should be Schepers et al (2011). This provides the reason fo...
by StephenW
16 Apr 2019, 8:13pm
Forum: Campaigning & Public Policy
Topic: Painted cycle lanes may make roads more dangerous for bike riders
Replies: 117
Views: 4759

Re: Painted cycle lanes may make roads more dangerous for bike riders

Mjr prefers a separate infrastructure for cycling. This seems to avoid the fundamental issue (dangerous driving) and is likely to be far more expensive than more traffic police and prosecutions etc.. It won't save pedestrians or motorists from the ongoing carnage. In New York they found that when t...
by StephenW
16 Apr 2019, 5:18pm
Forum: Campaigning & Public Policy
Topic: Painted cycle lanes may make roads more dangerous for bike riders
Replies: 117
Views: 4759

Re: Painted cycle lanes may make roads more dangerous for bike riders

Hello Vorpal Did you read the whole paper or just the abstract? Are you referring to the 2017 paper by Schepers et al or the 2013 one? The 2017 paper is a general overview of the various factors which contribute to cycling safety in the Netherlands, including cycle paths. I believe the reference to ...