I learned something new today
Discussion
Nitro-besty said:
Whatever you do though, never confuse it with when you see somebody spraying a blower with a similar looking can of stuff. That blower gel stuff is plain nasty (the health issues and medical treatment instructions are listed from top to bottom of the can!).
is there a that went straight over my head smiley anywhere? 
is that stuff different to the antifreeze the commentator was talking about then?Nitro-besty said:
Matt172 said:
Nitro-besty said:
Whatever you do though, never confuse it with when you see somebody spraying a blower with a similar looking can of stuff. That blower gel stuff is plain nasty (the health issues and medical treatment instructions are listed from top to bottom of the can!).
is there a that went straight over my head smiley anywhere? is that stuff different to the antifreeze the commentator was talking about then?The smell's bad enough, before you read how it can cause cancer. I'll try and get the blower on mine prepped when there's nobody around
Matt172 said:
I thought that was funny today when the top fuel team were running the cars in the pits, even though all the crew were wearing gasmasks, and there was huge plumes of nasty stuff floating about loads of people were standing close breathing it all in
Breathing in the marvellous Nitro fumes! Stood at the right distance from the pit you can get a good whiff without crying your eyes out for the next 10 minutes!hollypop said:
Today I learnt a lot form Barry Sheavills and the Showtime crew! Fab guys!
The one thing i keep forgetting though is... The traffic out of Santa Pod is a NIGHTMARE!!!! If I didn't have to park in the pits it'd make life SOOO much easier!
If anyone saw the Team RAC unit it was me!
RAC's got a unit that goes to the Pod? I wonder if I can do a shift at the Pod on a race weekend- my usual cell is only 190 miles away!The one thing i keep forgetting though is... The traffic out of Santa Pod is a NIGHTMARE!!!! If I didn't have to park in the pits it'd make life SOOO much easier!
If anyone saw the Team RAC unit it was me!
Matt: You nearly got it right, the stuff they spray is correct, where they spray it is slightly different!
They don't spray anti freeze into the blower, they actually spray the anti-freeze onto the injector hat (The part on top of the blower with normally 3 circular openings, or 'butterflies') to stop the throttle from sticking at any one point.
It's not so bad if they stick closed because you don't get any drive, but when they stick open at full throttle and you can't stop the engine from revving then you can sometimes be in a spot of bother.
They don't spray anti freeze into the blower, they actually spray the anti-freeze onto the injector hat (The part on top of the blower with normally 3 circular openings, or 'butterflies') to stop the throttle from sticking at any one point.
It's not so bad if they stick closed because you don't get any drive, but when they stick open at full throttle and you can't stop the engine from revving then you can sometimes be in a spot of bother.
Slinky said:
Matt172 said:
I thought that was funny today when the top fuel team were running the cars in the pits, even though all the crew were wearing gasmasks, and there was huge plumes of nasty stuff floating about loads of people were standing close breathing it all in
Breathing in the marvellous Nitro fumes! Stood at the right distance from the pit you can get a good whiff without crying your eyes out for the next 10 minutes!
Matt172 said:
Slinky said:
Matt172 said:
I thought that was funny today when the top fuel team were running the cars in the pits, even though all the crew were wearing gasmasks, and there was huge plumes of nasty stuff floating about loads of people were standing close breathing it all in
Breathing in the marvellous Nitro fumes! Stood at the right distance from the pit you can get a good whiff without crying your eyes out for the next 10 minutes!1960Zody said:
While we're on the subject of learning things,
What is the purpose of the small 'chimney' like scoop on the nose of a T/F car..
It was suggested to me that it was to pressurise the fuel tank at the top end, but could someone give me the definitive answer?
That's totally correct.What is the purpose of the small 'chimney' like scoop on the nose of a T/F car..
It was suggested to me that it was to pressurise the fuel tank at the top end, but could someone give me the definitive answer?
Slinky said:
1960Zody said:
While we're on the subject of learning things,
What is the purpose of the small 'chimney' like scoop on the nose of a T/F car..
It was suggested to me that it was to pressurise the fuel tank at the top end, but could someone give me the definitive answer?
That's totally correct.What is the purpose of the small 'chimney' like scoop on the nose of a T/F car..
It was suggested to me that it was to pressurise the fuel tank at the top end, but could someone give me the definitive answer?
Matt172 said:
I know this will make me sound like a thicky as you'll all probably already know this, but I never realised that the stuff they spray into the blower is antifreeze, I had always assumed that it was some kind of fueling thing.
Informative commentary from the Pod guys as always
What really irks me is when they say that the antifreeze is required due to the huge volume of air sucked in by these blowers. If that was correct then the fuel cars would need to do it as well, and don't even get me started on people saying it is because methanol is a could burning fuel. The reason for the icing is the latent heat of vapourisation of methanol (*) - as the fuel is forced through the injectors it vapourises and in doing so draws heat from the surroundings, eventually doing this so well it reduces the localised temperature to below zero.Informative commentary from the Pod guys as always
This is the same mechanism that causes the horn on CO2 fire extinguishers to get very cold and keeps beer cold in your fridge (the expansion of a refrigerant draws heat from the inside of the fridge). Put basically energy input is required to transition a substance from liquid to gas - usually this is done through the direct application of heat but can also be done by altering the pressure of a substance. In the latter case heat is (more often than not) transferred from the environment.
- Technically the accepted term these days is 'enthalpy of state transformation'
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