Search found 4527 matches

by drossall
24 Mar 2007, 12:33am
Forum: Campaigning & Public Policy
Topic: Helmets
Replies: 198
Views: 27390

Again, you are right, statistics can be complex, contradictory and hard to interpret. The problem with relying on personal experience, though, is that in the end that is statistical too - how many accidents in how many rides? Since obviously one person's experience may be unusually lucky, or unfortu...
by drossall
22 Mar 2007, 10:10pm
Forum: Bikes & Bits – Technical section
Topic: Upgrading a 7 speed to sti/ergo (on a budget)
Replies: 6
Views: 1222

I'm no expert but try Chris Juden's page on this for starters.
by drossall
22 Mar 2007, 7:31pm
Forum: Campaigning & Public Policy
Topic: Helmets
Replies: 198
Views: 27390

No, I completely understand. It's just that you can't get away from the following: 1. There aren't enough potential injuries to go around for all this injury-saving that goes on 2. There is some, though far from conclusive, evidence that helmets increase risk 3. Overall, we have to keep it in perspe...
by drossall
22 Mar 2007, 7:05pm
Forum: Campaigning & Public Policy
Topic: Helmets
Replies: 198
Views: 27390

andwags - how definitely, given the statistics?

willie_gunn - I agree 100% - it just seems worth investigating what I have to do in order most to minimise the risk, rather than assuming...
by drossall
15 Mar 2007, 10:50pm
Forum: Bikes & Bits – Technical section
Topic: Campag rear mech pull ratio
Replies: 5
Views: 1053

Most of what you need should be on the CTC site . I'm no expert, but as I read it the answer to your first question is no. I believe that the answer to your second is yes, but others will know more. What I can say is that the JTek ShiftMate mentioned (with link) at the end of that article works flaw...
by drossall
15 Mar 2007, 10:18pm
Forum: Campaigning & Public Policy
Topic: Cars parking in cycle lanes
Replies: 28
Views: 6160

LmP is correct except that it is advice not legislation.
by drossall
9 Mar 2007, 11:35pm
Forum: Campaigning & Public Policy
Topic: Cars parking in cycle lanes
Replies: 28
Views: 6160

What's hard to understand is the number of drivers who park on the pavement when parking on the road would not cause an obstruction.
by drossall
6 Mar 2007, 10:26pm
Forum: On the road
Topic: bike locks
Replies: 19
Views: 4489

As a teenager I went into the shops after putting a cheap combination lock on my bike. I came out and rode off, forgetting the lock, which duly broke without affecting my ride in any way.

I recommend buying locks stronger than that one.
by drossall
10 Feb 2007, 9:00am
Forum: Campaigning & Public Policy
Topic: motorists and mobiles
Replies: 44
Views: 7081

And actually of course 63mph is 10% over.

The important things in speeding (braking distance, how "hard" you hit something) depend on the square of your speed.

63^2/60^2 = 1.1025 or 10.25% over the limit.
by drossall
30 Jan 2007, 11:32pm
Forum: Using the Forum - request help : report difficulties
Topic: computer skills
Replies: 9
Views: 3818

Our church also runs a computer club intended to allow beginners to pick up basic skills, so it's definitely worth looking around.
by drossall
30 Jan 2007, 12:01am
Forum: The Tea Shop
Topic: Silly signs
Replies: 45
Views: 9416

My favourite is "This door is alarmed". Always makes me want to write underneath "So what? Mine is terrified."
by drossall
28 Jan 2007, 12:43am
Forum: Bikes & Bits – Technical section
Topic: Quadruple Chainsets
Replies: 26
Views: 3265

What about the effect on the rider's body? Four rings would mean feet wider apart. As I understand it effort is going into reducing this "Q factor", not increasing it, because it is broadly undesirable. There must be some here who know more than me about biomechanics.
by drossall
24 Jan 2007, 8:59pm
Forum: Campaigning & Public Policy
Topic: Cars parking in cycle lanes
Replies: 28
Views: 6160

reohn2 wrote:Why isn't reversing onto a mainroad punishable with points on the driving licence?????????
They should be made to reverse in!!!!!!!!!

It's not punishable with points but it is in the Highway Code.
by drossall
22 Jan 2007, 7:16pm
Forum: Campaigning & Public Policy
Topic: Helmets
Replies: 198
Views: 27390

I understand the principle of feedback, although I couldn't have written down the equation. I think that's more about my memory than about physics vs engineering... I am not sure however that any of this addresses the issue of whether there is actually no overall benefit - ie how big is the feedback...
by drossall
21 Jan 2007, 10:14am
Forum: Campaigning & Public Policy
Topic: Helmets
Replies: 198
Views: 27390

Fonant - thanks for the clarification.

I'm rather tempted to let it rest at this point. I have a strong feeling of having bored everyone else to tears :oops: We seem to be left only with a few sceptics here and all the advocates have gone away. That's never quite happened before.