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Re: Is a cadence sensor worth it?

4 June 2015 - 8:59pm
I have a cadence sensor but I can't see a readout when I'm on the bike. However looking at the results after a ride it's remarkable that I tend to keep a fairly constant 90-95 the most of the time I'm pedalling. So I guess I don't need a live readout

Re: Is a cadence sensor worth it?

4 June 2015 - 8:18pm
Well, the computer is being returned. The heart rate monitor would freeze every now and then. I worked out that it would stop working once the bike speed got above about 17 or 18 mph. So, I could cycle along the flat to the top of a slope and have a heart rate of 140 bpm. Freewheel down the slope at 20 mph for five minutes or so, get to the bottom where there's a junction and find my heartrate drops from 140 to, say, 80 in an instant. If I then increased my speed immediately then my pulse may go up to, say, 110 but then stay at that rate until my speed drops again.

I've tried with my light off, moving the computer head unit, doing a battery full - but no luck

It's this one, btw:

http://www.rosebikes.co.uk/article/sigm ... tAodKVYAew

Re: New type of road surface

4 June 2015 - 7:13pm
You'll know soon enough if it's slurry seal as it will be potholed in a couple of months. It's really only fit for footpahts and ways (IMHO)

Re: Confusingly signed cycle routes

4 June 2015 - 4:37pm
Bmblbzzz wrote:Is that a current standard Sustrans sticker?
TBH a lot of the info on that one is redundant. We know it's the National Cycle Network, for instance, and the stick man shapes don't give us any useful information either.
Yes, that's from the current pack. There have been a few sets over the past twenty years, the current set has been in place for at least five years (educated guess) and isn't greatly different from the two that came before it which also used a large blue background sticker.

In terms of info the top is most commonly a bicycle, intended to advertise to all road users that this is a cycle route. Alternatively it can be replaced with either a stick man and bicycle (shared path); or horse and rider, stick man and bicycle (shared path); or double stick man (pedestrian only section), as applies to the footbridge in question.

As I mentioned upthread Sustrans Rangers might understand all of these subtle notations, I'd expect the general public to grasp most of them from the picture but probably not the double stick man.

Whilst you and I know it's the NCN, not everybody will. There are also circumstances where it needs to be differentiated from other cycle routes, the London Cycle Network being the most well known example. The logo is not redundant, at least not in Sustrans view. At one time the strap-line in the footer was www.nationalcyclenetwork.org.uk, that changed a few years ago to www.sustrans.org.uk, providing some subtle branding.

Bent Spine.....Leaning Left......Car Drivers...

4 June 2015 - 4:23pm
Along with the NO seat belt and the BOTH parts of it if worn under the nipples

We now have the car drivers who look like they are trying to pick up something on the car floor with their left hand when really what they are doing is Texting.....

Easy to spot whilst behind the car.

Re: New type of road surface

4 June 2015 - 4:10pm
iviehoff wrote:Having looked at some articles, I think that it was a slurry seal that was applied to my local road. http://www.pavementinteractive.org/arti ... rry-seals/
They use these a lot round me. With a pea single sized gravel. And it's horrible. All the holes and bumps stay as holes and bumps except now you can't see them because it's all the same matty colour. And gradually all the gravel accumulates towards the edge of the road and across junctions - so when you go to turn left, just when you are in your turn you hit loads of small shingle !!. And when you have to pull over for e.g. an oncoming tractor or car, you are suddenly riding in lose shingle (and for me this makes control somewhat harder, just as the car/tractor is passing!).


Re: Angry Driver 18+

4 June 2015 - 3:01pm
He'll probably die young of apoplexy Kwackers

Re: New type of road surface

4 June 2015 - 3:01pm
It may be something similar but you wouldn't describe the protruding chips as small. The whole chip is visible, held together by tarmac making it very reminiscent of a rocky road chocolate biscuit. However again thinking about it I could see rain pooling in the gaps and if that water then froze it would produce a very slippery surface. Perhaps only good grip in the dry then. If I have to use the road again I'll try and get a photo as it is difficult to describe.

Re: Angry Driver 18+

4 June 2015 - 2:57pm
for those occasions u wish u had a soft little parcel of brown stuff to pop in their window?

Re: New type of road surface

4 June 2015 - 2:31pm
Having looked at some articles, I think that it was a slurry seal that was applied to my local road. http://www.pavementinteractive.org/arti ... rry-seals/

Although I couldn't see very much aggregate in the seal when initially laid, it seems the manner of laying it produced a thin layer of bituminous material over the top, exhibiting only a few small chips stuck to the top, when initially laid. After a couple of weeks, this has now either worn off or sunk in, and I can see the aggregate, being a typical road aggregate. But it is clearly different from the permeable aggregate that is most commonly used these days, and in particular it looks impermeable, which is a typical property of slurry seals. Putting permeable seal on this particular road is a disaster, because it is laid over an old concrete surface. So permeable seals just absorb water without being able to drain away, which then freezes and damages the seal when a frost comes along, which then converts to rapid pothole formation in heavy rain. So maybe, just maybe, if it doesn't crack up quickly due to the movement of the underlying concrete blocks, it may be a good solution.

Re: New type of road surface

4 June 2015 - 1:15pm
Exactly my thoughts although this is a minor B road so lorries aren't an issue. 4 x 4s on the other hand!!

I'm no expert but it looks as though the surface will last a good while before any further work is required.

Re: cycle routes website with gps details

4 June 2015 - 1:03pm
Maybe because a circular route can confuse a GPS - it wants to take a shortcut?

Re: Close passes - the lower the better

4 June 2015 - 1:01pm
pwa wrote:I know there is a long running debate on the effect of different machines (upright, recumbent, trike) on the space given by passing traffic, but I wonder if some of that effect has more to do with the positioning of the machine on the road, with some (notably trikes) requiring the rider take up a bit more of the road. And, perhaps, some low level machines with their corresponding low level eye lines make it a tiny bit harder to see irregularities in the road surface, thus encouraging a careful rider to ride a little further out to avoid being trapped into riding over a pothole close to the gutter. I would be surprised if the height of a rider's view point did not have some effect on their positioning. And a rider's positioning, in my experience, influences the room given by passing traffic.

The positioning factor is, I agree, indisputable. When I haven't ridden in rush hour traffic for a week or so I have to keep reminding myself to move out or risk someone squeezing past. For this experiment I think I was consistent in road positioning (I ride the route very regularly) which is why I began to notice the closer passes on the Strada.

I agree with Mick F that a trailer is a wonderful safeguard too.

Re: Close passes - the lower the better

4 June 2015 - 12:07pm
http://www.bbc.co.uk/iplayer/episode/b0 ... t-03062015
Nine minutes 35 seconds in -

Now their worried.........whats the stats of danger against cyclist

Re: Close passes - the lower the better

4 June 2015 - 11:48am
I suppose a lot must depend on what one calls a "close pass". Your (OP's) post suggests using 1m, but that struck me as a fairly normal pass. University of Bath research on passing distance in relation to rider "appearance" gives average passing distances between 1.14m and 1.22m depending on what rider is wearing. And those are average distances so 1m as a "close pass" seems a bit "distant". Of course I would love all cars to give more passing distance.


Re: Close passes - the lower the better

4 June 2015 - 11:37am
There are a few factors in play here...

1 - You will always have a chance of meeting a complete idiot in a motor vehicle.
This chance is relatively low, but can heavily distort small samples.

2 - Pet theory.
Motorists judge their overtaking distance to the wheel of the vehicle they are overtaking.
This means that trikes and trailers (with their wheels being a few inches outside of the person) get far more room than any two wheeler (which have their wheels nearly a foot inside of the person).

3 - Road positioning.
Most of us have experience as both a motorist and a cyclist that people riding closer to the gutter are far more likely to have people try to squeeze past. Once a motorist has had to 'decide' to overtake, they are far more likely to actually overtake properly.

4 - Stability / tolerance / perception.
On the trike I could tolerate slightly closer passes than I could on a bike - simply because the buffeting from the wake of the overtaking vehicle has less effect.

I'm sure there are more.
I'm not convinced that there is enough evidence to consider a "lower is better" verdict.

Had a private hire vehicle overtake me incredibly closely, when I stopped to tell him that it had been a scary pass he said the sun was in his eyes. The sun was off at about a 30-40 degree angle from ahead The local licensing authority was very nice about it, and have recorded it on his PH data, which will be used if he is ever looked at for causing a collision in the future. They have also had a word with him.
That was on a lowracer...

Re: Confusingly signed cycle routes

4 June 2015 - 9:40am
gaz wrote:Sign.jpg
Fairly standard Sustrans sticker on a fairly standard cylindrical pole. The "use footbridge" wording is roughly equivalent to a place name in size.

Is that a current standard Sustrans sticker? I don't think I've seen any quite like that. The ones I've seen are usually much more compact — just a number on a red (or sometimes blue) square with a white arrow below or next to it, all on a blue background.

TBH a lot of the info on that one is redundant. We know it's the National Cycle Network, for instance, and the stick man shapes don't give us any useful information either. All we need is number and/or destination, direction and in this case the info "use footbridge". Get rid of the rest and you could have legibly large place names on there. Of course, that would mean a lot of printing, and budgets...

Having said that, it is quite nice to have local and chronological variations, just as there are in other types of road sign.

Re: New type of road surface

4 June 2015 - 9:23am
There's a few like that around here, mostly bypass roads and the likes. The Consett bypass for example, an almost unridable surface, really really rough - even the Strava segment name is called 'rough', not to mention getting scared to death by lorries who don't slow down or move to one side. Whereas I've driven it in a car and it feels just like a normal road. Big fat car tyres with a massive air volume at about 30psi, massive suspension springs, and a comfy seat, of course a car is going to have a smoother ride than a bike.

I suspect the number 1 reason is cost, and secondly a rougher surface has better grip in wet or greasy conditions for cars.

Re: New type of road surface

4 June 2015 - 8:14am
That is the upside of course and it's certainly preferable to the loose chippings surface.

Re: Close passes - the lower the better

4 June 2015 - 8:09am
Anything out of the ordinary is treated with more respect than the ordinary.

When I tow my trailer, the difference is amazing in the way I'm passed and given space.


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