Search found 112 matches

by StephenW
16 Apr 2019, 8:13pm
Forum: Campaigning & Public Policy
Topic: Painted cycle lanes may make roads more dangerous for bike riders
Replies: 73
Views: 1853

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: 73
Views: 1853

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 ...
by StephenW
16 Apr 2019, 2:57pm
Forum: Campaigning & Public Policy
Topic: Painted cycle lanes may make roads more dangerous for bike riders
Replies: 73
Views: 1853

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

Hello Axle Knutt Why is there no research from the last 20 years in your list? How did you come up with the list? Did you assess the reports and papers for quality? (e.g. peer review, sample size, relevance, methods used etc.). I think some relevant research may have been done in the last 20 years.....
by StephenW
24 Mar 2019, 6:50pm
Forum: Campaigning & Public Policy
Topic: Bus controlled traffic lights
Replies: 74
Views: 5960

Re: Bus controlled traffic lights

What about other vehicles in the bus lane? Taxis, motorcycles, and of course pedal cycles, might be others too in some places. And what about junctions without traffic lights? Either the bus lane becomes a left-turn lane just before every side road and then starts again, or it needs to be continuou...
by StephenW
22 Mar 2019, 10:12am
Forum: Campaigning & Public Policy
Topic: Bus controlled traffic lights
Replies: 74
Views: 5960

Re: Bus controlled traffic lights

Vorpal wrote:But that is a traffic flow improvement that favours buses, rather than priority.


Ah OK. I think I see what you mean. But it is still potentially a good thing to have, yes?
by StephenW
22 Mar 2019, 9:56am
Forum: Campaigning & Public Policy
Topic: Bus controlled traffic lights
Replies: 74
Views: 5960

Re: Bus controlled traffic lights

Basically it is not possible to provide priority for bus traffic without bus lanes. In order to gain priority, the buses need to be able to overtake the queue and for that they need a separate lane. It really is that simple. I'm not sure about that. I recall reading a comment by someone who used to...
by StephenW
19 Mar 2019, 10:41pm
Forum: Campaigning & Public Policy
Topic: Bus controlled traffic lights
Replies: 74
Views: 5960

Re: Bus controlled traffic lights

This may be of interest, especially the eighth paragraph:

https://bicycledutch.wordpress.com/2016 ... interview/
by StephenW
25 Jan 2019, 5:53pm
Forum: Non-standard, Human Powered Vehicles
Topic: 1x11 gearing on a bent
Replies: 36
Views: 9199

Re: 1x11 gearing on a bent

David Gardiner of Laid Back Bikes is trying a 1*12 setup on his demo Nazca Fuego. You could ask him how it is going. I've mentioned this before, but I think it is nice to avoid really small chainrings, as they seem to give a spongy feel to the drivetrain. I think this is mostly due to frame flex, bu...
by StephenW
25 Jan 2019, 5:46pm
Forum: Bikes & Bits – Technical section
Topic: Wheel sizes vs Handling
Replies: 57
Views: 5172

Re: Wheel sizes vs Handling

Hello all There is a tool called JBike6, which allows the stability of bicycles to be analysed. There are several simplifications, such as no friction in headset or tyres, infinitely narrow tyres etc. Nevertheless, if you only want to compare one result from the program to another, I think that is O...
by StephenW
25 Jan 2019, 5:17pm
Forum: Bikes & Bits – Technical section
Topic: Wheel sizes vs Handling
Replies: 57
Views: 5172

Re: Wheel sizes vs Handling

Hello Pete One of the odder handling differences I've come across is changing the bars on an overseat steering 'bent from aero to tiller style. In either case the bike's geometry is fundamentally the same, and with no weight on the bars and seating position pretty much the same (arms excepted) there...
by StephenW
21 Dec 2018, 2:46pm
Forum: Bikes & Bits – Technical section
Topic: Plus Ca Change...
Replies: 95
Views: 3275

Re: Plus Ca Change...

... for one particular niche of the sport. To some people cycling is a sport, to others it is primarily a mode of transport. I suspect this is part of the reason behind the disagreement. You can argue on the head of a pin (and many do) about the usefulness of such developments, but you can't easily...
by StephenW
21 Dec 2018, 2:30pm
Forum: Bikes & Bits – Technical section
Topic: Plus Ca Change...
Replies: 95
Views: 3275

Re: Plus Ca Change...

Marketing and lifestyle images have always been with us. ... Which helps no one I think that grumpy skepticism serves a very useful purpose! There are a whole host of marketing departments out there trying to convince people to buy their new stuff. This needs to be counterbalanced by an army of bea...
by StephenW
19 Dec 2018, 11:00pm
Forum: Bikes & Bits – Technical section
Topic: Why you need aero wheels
Replies: 91
Views: 3748

Re: Why you need aero wheels

I'm very pleased that this discussion has digressed into recumbents! :) I'm pretty sure the difference in aerodynamic drag between a typical racing bike and a sporty recumbent (with the seat reclined a long way back) is an awful lot more than the difference that even the best wheels can make! Also, ...
by StephenW
5 Nov 2018, 10:33pm
Forum: Bikes & Bits – Technical section
Topic: The catch-all bicycle geometry thread
Replies: 9
Views: 712

Re: The catch-all bicycle geometry thread

Hello Samuel D I started listening to the podcast, although I only got through about 20 minutes. I'll listen to more of it when I have time. Have you come across JBike6? It is a program in Matlab, which calculates the stability of bicycles based on wheelbase, weight distribution, trail, wheel interi...
by StephenW
30 Oct 2018, 6:50pm
Forum: Bikes & Bits – Technical section
Topic: What is the best seat shock absorbing strategy?
Replies: 27
Views: 1113

Re: What is the best seat shock absorbing strategy?

I have a saddle called Lepper Tour. It is a mattress saddle, which means that there are springs running from front to back underneath, as well as the two springs at the back. The springs really work! I especially realise this when I ride another bike that does not have a sprung saddle. If I put my f...