Bugatti Veyron wheels? Mental.
Discussion
King Herald said:
Dapster said:
At full speed, the valves of a normal wheel can not stay closed due to the huge forces at play and will cause the tyres to slowly deflate....
Drivel!The valves are there merely to let you inflate the tyres. The valve CAPS are there to seal the tyres.
Therefore the valve being 'lifted by centrifugal force' will allow nothing leak from the tyre.
Basic car maintenance 101, my friend, always use valve caps.
https://www.youtube.com/watch?v=Skf-L4C1nf8
King Herald said:
Cemesis said:
The cap is there to stop debris getting in the valve. A plastic cap will obviously not seal the air in the tyre.
Seriously? You think that cap is just there to keep dirt out? The dust caps are just that. Dust caps.
King Herald said:
Drivel!
The valves are there merely to let you inflate the tyres. The valve CAPS are there to seal the tyres.
Therefore the valve being 'lifted by centrifugal force' will allow nothing leak from the tyre.
Basic car maintenance 101, my friend, always use valve caps.
Valve caps or dust caps as they are also known, are there to stop...... Er Dust!The valves are there merely to let you inflate the tyres. The valve CAPS are there to seal the tyres.
Therefore the valve being 'lifted by centrifugal force' will allow nothing leak from the tyre.
Basic car maintenance 101, my friend, always use valve caps.
valve caps
Edited by Tonto on Sunday 29th March 03:03
coppice said:
A daft Veyron would be humiliated by turning up to most drag race meetings- and I mean in the street legal stuff. Standing quarter about 10 seconds..have seen 50 year old Chevies do better . And their tyres ( tires?)cost about £1.50 in comparison; their engines sound better too
And how often do 10 second drag cars need their engines rebuilding? I find it pointless comparing the veyron to these types of cars. Sure a 900 bhp Skyline might be quicker in some cases but I'd imagine it wouldnt last long sat in traffic then driven across europe.Cliftonite said:
My car is not a Veyron. But the valve on its tyres is pushed in to release air. Centrifugal force will help keep it closed?
Just think about that, would you? Pushed in (towards the outside of the tyre) is exactly where centrifugal (actually centripetal) force will act on the valve. Which will allow it to deflate if you don't have a cap on the valve. AdeTuono said:
Just think about that, would you? Pushed in (towards the outside of the tyre) is exactly where centrifugal (actually centripetal) force will act on the valve. Which will allow it to deflate if you don't have a cap on the valve.
Centripetal force opening up the cake makes perfect sense, a non rubber valve cap sealing the system doesn't. They aren't rubber or O-Ringed so how do they prevent air leakage? Unless it's just a method of preventing the air escaping too quickly.
Valve caps do not seal the valves. You push the valve in to release the air and the centrifugal force as the wheel spins would force the valve core out, therefore sealing the valve. If the valve relied on a litlle plastic cap to keep the air in I would not be driving a car at any speed let alone 250 MPH.
marmitemania said:
Valve caps do not seal the valves. You push the valve in to release the air and the centrifugal force as the wheel spins would force the valve core out, therefore sealing the valve. If the valve relied on a litlle plastic cap to keep the air in I would not be driving a car at any speed let alone 250 MPH.
That depends where abouts on the wheel the valve is mounted.AdeTuono said:
Cliftonite said:
My car is not a Veyron. But the valve on its tyres is pushed in to release air. Centrifugal force will help keep it closed?
Just think about that, would you? Pushed in (towards the outside of the tyre) is exactly where centrifugal (actually centripetal) force will act on the valve. Which will allow it to deflate if you don't have a cap on the valve. 
Riley Blue said:
King Herald said:
Drivel!
The valves are there merely to let you inflate the tyres. The valve CAPS are there to seal the tyres.
If that's true, how come my tyres stay inflated with no caps on the valves?The valves are there merely to let you inflate the tyres. The valve CAPS are there to seal the tyres.
Don't get in a debate with keen cyclists about valve caps. According to "The Rules" you should never keep them on:
http://www.velominati.com/the-rules/
It's as important as lining the valve stem up with the tyre label.
http://www.velominati.com/the-rules/
It's as important as lining the valve stem up with the tyre label.
Jimshorts said:
Plenty of motorbikes have valve stems with a 90 deg bend in them to line the valve stem with the circumference of rim to stop the problem detailed above.
I think the bend is there so you can get an airline on to them more easily actually .the same as some trucks have .Tony Starks said:
And how often do 10 second drag cars need their engines rebuilding? I find it pointless comparing the veyron to these types of cars. Sure a 900 bhp Skyline might be quicker in some cases but I'd imagine it wouldnt last long sat in traffic then driven across europe.
Exactly. I've never driven one of course but I'd imagine a Veyron is a tremendous thing on a long trip. Some old Skyline or 700 bhp Nova (Chevrolet, not Vauxhall) would be quite unpleasant. At least you'd look good in a Nova waiting for the AA unlike the Skyline in your £3.75 Wilko trimmed mouse fur interior.Gassing Station | General Gassing | Top of Page | What's New | My Stuff