cycleruk wrote: 6 Jun 2024, 2:54pm
I wondered why the Dauphine wasn't on TV this afternoon :-
"Critérium du Dauphiné stage five neutralised with no winner after mega crash
More than 30 riders fall in slippery conditions".
I was watching while doing a few jobs about the house.
Was very awkward conditions - light rain on dry, newly resurfaced roads. Like black ice. The breakaway was tiptoeing down, and I just put it down to one of them being a poor descender.
Then the peleton hit it. Riders were falling down just applying the brakes on straight road.
Steady rider wrote: 6 Jun 2024, 9:10pm
Disc brakes may contribute perhaps by making braking marginally more severe, how could this be tested?
Not very easily, because any rider will adapt their braking to the brakes they have. The human factors in that crash will be considerable and impossible to reproduce.
Beyond that it's not just a change from rim to disc but cable to hydraulic, and at least IME it's easier to modulate hydraulics to give more controlled power (ME doesn't involve anything like that actual situation, mind).
Today’s farce reminded me of an Audax where everyone has the route but follow the man in front going off route. Must have been chaos turning all those team cars around.
Whatever I am, wherever I am, this is me. This is my life
The riders view is an improvement due to a shorter distance but the video actually show the rim brakes stopped in a straight line. A rider using rim brakes will know they may have to brake early. In the event of a car pulls out and the rider is going to hit, the disc brakes would be better. The harsher the braking, more risk of a skid and skids will be more common that full impacts. That is how it looks to me.
Steady rider wrote: 7 Jun 2024, 7:35pm
The riders view is an improvement due to a shorter distance but the video actually show the rim brakes stopped in a straight line. A rider using rim brakes will know they may have to brake early. In the event of car pulls out and the rider is going to hit, the disc brakes would be better. The harsher the braking more risk of a skid and skids will be more common that full impacts. That is how it looks to me.
The authors of the video describe better consistency and predictability. They don't describe "harshness".
It looks like in wet weather discs have a higher skid risk, if applied to full extent.
"Doctor! Doctor! It hurts when I do this!"
"Then don't do that"
As expert commentary noted, touch any brakes at all at these speeds on that degree of slipperiness and it's really down to luck if you get away with it.
Steady rider wrote: 7 Jun 2024, 7:46pm
In the very wet the disc stopped 7m sooner and had the back wheel starting to come round. A study on skid risk, disc v rim, could be of interest.
But how would you divorce the very highly variable human factors from the study?
A lot will come down to rider skill. Let's say you prove rim brakes are, all else equal, less skid prone, put me on a rim-brake bike and MvdP on a disc brake bike and send us over muddy cobbles and it's me that'll be more prone to skidding at any given speed.
Good to see Roglic performing well and hoping Evenepoel improves before the TdF.
Also hoping Vingegaard is fit enough, we need someone to make it a race against Pogacar.
A man can't have everything.
- Where would he put it all.?.
