Tyre Investigation

[Call me wolfie 677]

On 9/16/2022 at 3:08 PM, Bagpuss said:

Presumably they have issues at P'boro because it's essentially a big circle and they are constantly on the edge of the tyre?

Correct, which causes the tyres to overheat then self destruct, made worse by a higher track temperature for an afternoon meeting.

[cowboy cookie returns? 747]

It's clear the construction of the tyre is to blame as it isn't up to the requirements needed to operate with the current set ups.

However you also have to look beyond the tyres. 

The high reving engines causing more wheel spin puts additional pressure on the tyre construction & more heat though the tyre.

The lack of material on the tracks which means that the tyre is running on pretty much the track base which far harder than running on a well prepared shale track. This in turn produces more heat though the tyre which when coupled to point one further increases operating temperatures.

The shale is removed from the tracks as the high reving engines are impossible to ride on anything other than ultra slick tracks.

The blue groove in reality is caused by the excess heat between tyre & track surface. When you apply excess heat to a surface it generally turns blue. In the engineering world if a set of brake discs or flywheels have a blue surface it's a sign of massive heating.

We constantly read about rider safety being paramount & costs being out of control. 

The question must be is why won't the control board/BSPL do anything about the equipment & why are the riders so dead set against having restrictions that in the end would make the sport safer & at the same time reduce costs?

[wtf 621]

On 9/18/2022 at 8:01 AM, cowboy cookie returns? said:

It's clear the construction of the tyre is to blame as it isn't up to the requirements needed to operate with the current set ups.

However you also have to look beyond the tyres. 

The high reving engines causing more wheel spin puts additional pressure on the tyre construction & more heat though the tyre.

The lack of material on the tracks which means that the tyre is running on pretty much the track base which far harder than running on a well prepared shale track. This in turn produces more heat though the tyre which when coupled to point one further increases operating temperatures.

The shale is removed from the tracks as the high reving engines are impossible to ride on anything other than ultra slick tracks.

The blue groove in reality is caused by the excess heat between tyre & track surface. When you apply excess heat to a surface it generally turns blue. In the engineering world if a set of brake discs or flywheels have a blue surface it's a sign of massive heating.

We constantly read about rider safety being paramount & costs being out of control. 

The question must be is why won't the control board/BSPL do anything about the equipment & why are the riders so dead set against having restrictions that in the end would make the sport safer & at the same time reduce costs?

But we had all the same conditions 3 years ago with Mitas tyres and they didn't fall apart.

[Hackett 220]

On 9/17/2022 at 9:52 PM, Call me wolfie said:

Correct, which causes the tyres to overheat then self destruct, made worse by a higher track temperature for an afternoon meeting.

My understanding is they use a harder compound of tyre in Poland. Because with most of the tracks in Poland being throttle merchants you would think they would have a similar problem but I read they have access to a harder compound. 

[The Dog 413]

What I don't understand is why aren't all riders venting their spleen over these unsafe tyres? If safety is paramount as we keep getting told, why is it only Nicholls that's had the guts to say his piece? Surely the BSPL should be protecting the riders too by either not running meetings until these tyres have been proven or by enforcing the dumbing down of engine performance so the back wheel isn't spinning so viciously. 

Something seriously wrong if a tyre cannot last a minutes racing let alone a whole meeting. 

[THE DEAN MACHINE 4,746]

2 hours ago, wtf said:

But we had all the same conditions 3 years ago with Mitas tyres and they didn't fall apart.

Speedway has had this problem for a few years now even with mitas and before that Barum, I can remember tyres down to the skin back in the early 2000 with whole knobbles being ripped off after 2 rides, basso’s tyre looked worse cause he carried on riding with a flat tyre,,it doesn’t matter what tyre manufacturer you use, they will all disintegrate when you do burnouts for 60 seconds which is what is happening 

[steve roberts 9,246]

28 minutes ago, THE DEAN MACHINE said:

Speedway has had this problem for a few years now even with mitas and before that Barum, I can remember tyres down to the skin back in the early 2000 with whole knobbles being ripped off after 2 rides, basso’s tyre looked worse cause he carried on riding with a flat tyre,,it doesn’t matter what tyre manufacturer you use, they will all disintegrate when you do burnouts for 60 seconds which is what is happening 

Speedway does tend to get its "knickers in a twist". There were issues with tyres back in the eighties/nineties...you'd think it would have learnt lessons?