Horror story.

ZTec

Zorg Guru (IV)
Supporter
British Zeds
The M44 Massive
Joined
Oct 18, 2014
Points
171
Location
Llantwit Major
Model of Z
Z3
How on earth would that get into the tyre, it would have to been stood upright to penetrate at that angle.
 

Zeti

Zorg Guru (IV)
Supporter
Romanian Zeds
The M44 Massive
Joined
Oct 9, 2013
Points
167
Location
Bucuresti/ Romania
Model of Z
Z3 roadster 1.9
What times do we live! In the paste you could collect piece of iron from your flat tyre, but nowadays bullets? Active bullets?...what kind of people loose on the street this kind of iron?!...
 

t-tony

Zorg Expert (II)
Supporter
British Zeds
#ZedShed
Joined
Dec 31, 2013
Points
226
Location
Torksey Lock,Lincoln, England
Model of Z
E89 Z4 23i Auto
How on earth would that get into the tyre, it would have to been stood upright to penetrate at that angle.
You can say that about almost anything which stick in tyres. For example, if you drop a screw on the floor how likely is it that it will fall on its head standing straight up?, but they nearly always go straight through a tyre as if you had put it there with a screw driver!:)

Tony.
 

windym

Zorg Guru (II)
British Zeds
Joined
Oct 10, 2015
Points
123
Just had a quick look on the Z owners map, nothing for downtown Fallujah.

Andy
 

Redline

Zorg Expert (I)
British Zeds
Joined
Mar 10, 2015
Points
208
Location
Nuneaton
Model of Z
E89 20i msport
You can say that about almost anything which stick in tyres. For example, if you drop a screw on the floor how likely is it that it will fall on its head standing straight up?, but they nearly always go straight through a tyre as if you had put it there with a screw driver!:)

Tony.
Screws and nails flip up when you catch the edge of the head and then dig into the tyre.
A live round however I expect was deliberately placed with the expectation it would go off. :eek:
 

t-tony

Zorg Expert (II)
Supporter
British Zeds
#ZedShed
Joined
Dec 31, 2013
Points
226
Location
Torksey Lock,Lincoln, England
Model of Z
E89 Z4 23i Auto
Still hard to see how it would tip up enough to point hold Ian, a cylindrical object like that you would expect it to get rolled away. Just a freak chance. I wonder how many more are out there?

Tony
 

windym

Zorg Guru (II)
British Zeds
Joined
Oct 10, 2015
Points
123
Not a bullet in a tyre but this was found on a WW1 battle field, two bullet's having collided in mid air.

main-qimg-23567d529ffa52a178930e514adedd0d.jpeg


There are others, one from the battle at Gallipoli

bp3uhJ7.jpg



Andy
 
Last edited:

t-tony

Zorg Expert (II)
Supporter
British Zeds
#ZedShed
Joined
Dec 31, 2013
Points
226
Location
Torksey Lock,Lincoln, England
Model of Z
E89 Z4 23i Auto

andyglym

Shiny Dust Caps Make Your Zed Go Faster.
Supporter
British Zeds
Joined
Feb 20, 2015
Points
231
Location
Moresby, West Cumbria, England
Model of Z
2.8 Roadster
Not a bullet in a tyre but this was found in a WW1 battle field, two bullet's having collided in mid air.

View attachment 34396

There are others one from the battle at Gallipoli


Andy
Now that's a picture and then some! I would say what are the chances but there was plenty of it flying around. Impressive pic nonetheless.
 

smiffy

Zorg Guru (III)
British Zeds
Joined
Nov 1, 2015
Points
147
Location
Lowestoft
Model of Z
Z3 2.8 pre-facelift in Montreal Blue
So, lets think about the possible outcome of the bullet in the tyre.

If it is a .223 which I think is the smallest round available in that style of case.

The head or bullet itself will weigh between 3 and 6grams depending on type, (0.125 to 0.25 ounces). Not a lot really, however it would leave the case at around 3000 ft per second and is about a foot away from the wheel hub.

If you was lucky, it would go bang while the case wasn't in contact with the ground, so the case would force itself out of the tyre. However, its only likely to go off when it is flat against the road!

As the powder ignites in the case, it will generate between 50 and 65 thousand psi on the back of that .223 diameter bullet to force it on its way. A tiny surface area, but still a huge amount of instantaneous energy.

So the question is, what happens first?

a) tyre instataniously shreds due to the rapid pressure increase inside the already damaged tyre
or
b) does the wheel hub shatter as the head travelling at 3000 ft per second hits it?

we won't consider where the bits would go.

driver has had a very lucky escape!
 

Redline

Zorg Expert (I)
British Zeds
Joined
Mar 10, 2015
Points
208
Location
Nuneaton
Model of Z
E89 20i msport
So, lets think about the possible outcome of the bullet in the tyre.

If it is a .223 which I think is the smallest round available in that style of case.

The head or bullet itself will weigh between 3 and 6grams depending on type, (0.125 to 0.25 ounces). Not a lot really, however it would leave the case at around 3000 ft per second and is about a foot away from the wheel hub.

If you was lucky, it would go bang while the case wasn't in contact with the ground, so the case would force itself out of the tyre. However, its only likely to go off when it is flat against the road!

As the powder ignites in the case, it will generate between 50 and 65 thousand psi on the back of that .223 diameter bullet to force it on its way. A tiny surface area, but still a huge amount of instantaneous energy.

So the question is, what happens first?

a) tyre instataniously shreds due to the rapid pressure increase inside the already damaged tyre
or
b) does the wheel hub shatter as the head travelling at 3000 ft per second hits it?

we won't consider where the bits would go.

driver has had a very lucky escape!
The question is, is the distance that the head has to travel sufficiently small that the pressure doesn't have time to dissipate into the tyre before the head cracks the hub. My guess is the head hits the hub before the tyre has time to explode - which it will just hundredths later. Double whammy!

Not sure I'd want to be removing the tyre either.
 

Redline

Zorg Expert (I)
British Zeds
Joined
Mar 10, 2015
Points
208
Location
Nuneaton
Model of Z
E89 20i msport
Still hard to see how it would tip up enough to point hold Ian, a cylindrical object like that you would expect it to get rolled away. Just a freak chance. I wonder how many more are out there?

Tony
Have had no end of screws and nails in tyres over the years. If it tips up so the point sticks into the base of the groove I can see how it then gets pushed through the tyre. I see a PhD subject here =))
 

t-tony

Zorg Expert (II)
Supporter
British Zeds
#ZedShed
Joined
Dec 31, 2013
Points
226
Location
Torksey Lock,Lincoln, England
Model of Z
E89 Z4 23i Auto
You may be right Ian. Obviously I see lots of things stuck in tyres, some at crazy angles but the biggest majority are perpendicular to the tread, there has to be a scientific reason for that, not just Sod's law.

Tony.
 

t-tony

Zorg Expert (II)
Supporter
British Zeds
#ZedShed
Joined
Dec 31, 2013
Points
226
Location
Torksey Lock,Lincoln, England
Model of Z
E89 Z4 23i Auto
Did you have to inform the police for that Tony?
No Mark, nothing I/we can do, if a customer wants to take a dangerous vehicle away all we can do is advise against it. Even on a vehicle which fails the M.O.T. the same applies.

Tony.
 
Top