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Tyre warmers

Started by BOBR6 84, September 23, 2014, 07:42:54 PM

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Hawk

Quote from: yoshimura on September 24, 2014, 09:03:48 AM
We must already start having values ​​of real pressure, the simulation is completely false.One tire under inflated, overheated;1.60 bars(23.22 psi) of pressure,is false for the race.

I think Piboso will get around to accurately simulating a tyre model including the damping effect of tyres when they compress over bumps and kerbs in a later beta, I hope.  ;) :)

Hawk.

HornetMaX

Quote from: BOBR6 84 on September 24, 2014, 07:28:39 AM
so i can select the temperature of the tyres in the garage, to get my prefered pressures! without having to leave the garage first!

You set the tire pressure with the setting in the garage, not changing the warmers temp.
I don't know if the pressure settings refers to a "cold" (i.e. ambient temp) tire or to the warmed up tire (I'd say cold), but the pressure that counts anyway is the one you have when you put laps together: do a few laps, go back to the pits and read the pressure/temp.

I'm still confused: where's the problem / missing thing ?

MaX.

yoshimura

Quote from: Hawk_UK on September 24, 2014, 11:11:45 AM
Quote from: yoshimura on September 24, 2014, 09:03:48 AM
We must already start having values ​​of real pressure, the simulation is completely false.One tire under inflated, overheated;1.60 bars(23.22 psi) of pressure,is false for the race.

I think Piboso will get around to accurately simulating a tyre model including the damping effect of tyres when they compress over bumps and kerbs in a later beta, I hope.  ;) :)

Hawk.


tire wear, are well simulated, tire temperature, plays a big role, with real pressure in the future, yes, thank you piboso for future efforts ;)

BOBR6 84

Quote from: HornetMaX on September 24, 2014, 11:14:21 AM
Quote from: BOBR6 84 on September 24, 2014, 07:28:39 AM
so i can select the temperature of the tyres in the garage, to get my prefered pressures! without having to leave the garage first!

You set the tire pressure with the setting in the garage, not changing the warmers temp.
I don't know if the pressure settings refers to a "cold" (i.e. ambient temp) tire or to the warmed up tire (I'd say cold), but the pressure that counts anyway is the one you have when you put laps together: do a few laps, go back to the pits and read the pressure/temp.

I'm still confused: where's the problem / missing thing ?

MaX.

Ok. I may not make any sense to you. Thats fine.

Its just a suggestion that I would like to see warm tyre pressures in the garage. Before.

Say I set the cold pressures.. Then click a pre-set temperature (tyre warmer) to see around about where the warm pressures will be.

Instead of.. Leaving the garage with cold tyre pressures and guessing what they will increase to..

Im used to doing that.. Thats all.

HornetMaX

Quote from: BOBR6 84 on September 24, 2014, 03:08:04 PM
Ok. I may not make any sense to you. Thats fine.

Its just a suggestion that I would like to see warm tyre pressures in the garage. Before.

Say I set the cold pressures.. Then click a pre-set temperature (tyre warmer) to see around about where the warm pressures will be.

Instead of.. Leaving the garage with cold tyre pressures and guessing what they will increase to..
OK I see what you mean now. But at the moment the "warm tyre pressure" would be always the same, as you can't change the warmer temperature.
So you do the weird thing once (pits, out, pits immediately to check the pressure) and you're good forever.

It may make sense to have the tire status display showing the current temp and warm pressure immediately, as soon as the tire is changed or the pressure is changed (or the warmer temp is changed, if this is ever implemented).

Quote from: Hawk_UK on September 24, 2014, 07:45:47 AM
Don't racing teams use an inert gas these days? I mean I heard that racing teams use an inert gas in their tyres that doesn't expanding on heating and therefore gives the team a stable tyre pressure that once set doesn't change during the race?
The fact the used gas is inert does not mean it won't expand when temperature increases. Inert means only that the gas is not very willing to react chemically (with the tire interior material or the rim material).

MaX.

BOBR6 84

good, good! yes, that would make perfect sense  ;)

Hawk

Quote from: HornetMaX on September 24, 2014, 03:29:00 PM
Quote from: Hawk_UK on September 24, 2014, 07:45:47 AM
Don't racing teams use an inert gas these days? I mean I heard that racing teams use an inert gas in their tyres that doesn't expanding on heating and therefore gives the team a stable tyre pressure that once set doesn't change during the race?
The fact the used gas is inert does not mean it won't expand when temperature increases. Inert means only that the gas is not very willing to react chemically (with the tire interior material or the rim material).

MaX.

Thanks for that Max... Noted.  ;)

Hawk.

Daniel_F

well with this idea u can put the right temp and then set the pressure u want i think this would be perfect .. yes u can do that getting out and getting it but its stupid since tyre warmer its like a must in a racing team ...

JJS209

Quote from: BOBR6 84 on September 23, 2014, 10:36:35 PM
So the tyres are at 60 degrees straight away, yet the pressures carry on increasing lap after lap!

If we could have the tyres warmed up to optimal temp in the garage, the pressures should stay pretty much the same when you hit the track.
i am sure that thats not true, your pressure and temperature increase by "using" the tyre (friction!!!) and you wont have the same pressure and temp when you return to the garage or something else.
i think its not possible to put the "right" pressure to the tire when you start out of the box. you need to do some laps, see where the pressure goes and then you have a clue what pressure could be the best.

the reason for gas must be that it diffuse less than normal oxigen thru the rubber and so the pressure is more constant as with "normal" air.

HornetMaX

Quote from: JJS209 on September 25, 2014, 04:47:24 PM
i am sure that thats not true, your pressure and temperature increase by "using" the tyre (friction!!!) and you wont have the same pressure and temp when you return to the garage or something else.
i think its not possible to put the "right" pressure to the tire when you start out of the box. you need to do some laps, see where the pressure goes and then you have a clue what pressure could be the best.
Exactly my point.

Quote from: JJS209 on September 25, 2014, 04:47:24 PM
the reason for gas must be that it diffuse less than normal oxigen thru the rubber and so the pressure is more constant as with "normal" air.
Actually that's one of the reasons the "pro-gas" camp puts forward, but it sounds like a little bit of bullshit to me, especially for 40min races.

The only reason that sounds OK to me is that in air you have moisture (humidity) and that may be bad for multiple reasons: it could freeze (not a big deal for motogp I guess), it could cause corrosion (of magnesium rims, for example) and the expansion as a function of temperature is a bit more complex than the one of a "pure", "dry" gas like nitrogen.

MaX.

BOBR6 84

Yes! When I started this topic I didnt realise the tyre temp/pressure increased as soon as you leave the garage until desteban pointed that out!

Iv always done a few laps before returning to garage!

Obviously the temp/pressure will rise with use, but not as much as from a cold tyre! (or maybe they do?)

On my real bike the pressures are similar when I finish a race, but I have no idea what they increase to during a race!

All I know is my cold rear tyre at 23-25psi will end up around 30psi when warm! No idea what it reaches out on the track!?

Also expensive tyre warmers give you a temperature read out.. So you can heat them up to optimal working temp for the tyre brand.

JJS209

Quote from: BOBR6 84 on September 25, 2014, 08:05:12 PM

On my real bike the pressures are similar when I finish a race, but I have no idea what they increase to during a race!
sorry but i can not belive that.

BOBR6 84

Lol believe whatever you want!
Too many variables for me to be bothered to carry on explaining or try to..


The original suggestion was simple..