I guess I'm to shy to ask someone who is doing it, but what is the deal with all this spraying the tires down with water btwn runs? Just curious, I seem to be seeing more and more people doing this. Is this a trendy thing that if the next guy is doing it maybe I should, or does this actually do something?

thanks

 

A lot of people do this with the Azenis (including me) to cool them down. When the Azenis get too hot, they get greasy and slippery.

 

Thank you!

 

Does anyone know if the same thing happens to Kumho Victoracers?

 

The Victoracers work best at 180-200 deg F. It's hard in autox to get nearly that much heat. The Hoosier autox radial can be overheated that way.

 

And the Falken Azenis work best below 125 degrees or so. That is why during the winter STS rules And usually the top PAX takers are STS.

 

are there any rules in the rulebook for tat we can use to cool tires? i've got some ideas about liquids that disapate heat better.....

-spenc

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Lo-Buck EF &raquo;</TD></TR><TR><TD CLASS="quote">i've got some ideas</TD></TR></TABLE>
Share your ideas Spenc.

 

But will these liquids destroy the rubber?

 

dangsr were having a discussion about intercooler watter sprayers and how isopropal alcohol would be better than water because it will help desipate the heat better than water. then while spraying tires down at nnjr, we both looked up and were like "alcohol!". but i wonder what it will do to the rubber.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mohudsolo &raquo;</TD></TR><TR><TD CLASS="quote">The Victoracers work best at 180-200 deg F. It's hard in autox to get nearly that much heat.
</TD></TR></TABLE>

Unless, of course, you have 2 drivers for the day. 2 of the best drivers in one of my regions (1000 PAX a handful of times) spray down their Victoracers in their BS S2000.

 

Isopropyl alcohol does make rubber brittle after a while. Working at a pharmaceutical lab we used ISOALO on everything to sterilize equipment. The alcohol takes the oils out of rubber when it evaporates.

 

I would be less concerned about what the alchohol did to your rubber if you're spraying it near a hot exhaust system or brake rotor..

 

flame shmame
ok, so that closes that thought. i wonder what other chem will disapate heat better, but not damage the tire. or maybe ill just use ice water next event. although the way the weather is going, water will freeze at the next event.
-spenc

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Lo-Buck EF &raquo;</TD></TR><TR><TD CLASS="quote">are there any rules in the rulebook for tat we can use to cool tires? i've got some ideas about liquids that disapate heat better.....

-spenc</TD></TR></TABLE>

It's hard to find anything that cools materials better than water. It absorbs huge amounts of heat as it evaporates.

According to the Solo2 rulebook you can spray your tires but you cannot get the ground wet.

 

the _temperature_ of the water does relatively little in the cooling process. in reality, it's the evaporation that really cools the tires more then anything else.

nate

 

Yes, but evaporation works by the water absorbing energy, and since colder water would need more energy/heat absorbed per molecule to evaporate, colder water would be more effective because it would absorb more energy.

Atleast I think it works that way

 

so im wasting my time wetting the victoracers down?? My girl and i codrive the same car and by the end of our runs the car seems to start plowing alot, doesnt want to turn in when needed and so on..
recently just started wetting them down a few events ago and seems to feel better after i do so, or is it just my imagination..

The Azenis on my cavalier do need some attention after cooking them run after run. especially since its usaully 90 degrees+ here most of the time..

 

I've never needed to wet down my victoracers.. granted, I've never had anyone co-drive, but some of our tracks are rather large, and the tires definately do get warm... never over heated them yet

 

Ahh, so doing this in the hot *** Texas environment where we auto-x in 90-100 degree plus heat and extremely hot pavement would help out? Might be worth a try....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jaxle &raquo;</TD></TR><TR><TD CLASS="quote">Yes, but evaporation works by the water absorbing energy, and since colder water would need more energy/heat absorbed per molecule to evaporate, colder water would be more effective because it would absorb more energy.

Atleast I think it works that way </TD></TR></TABLE>

OK, I'm gonna get 1st year college chem technical on your *** :-) To raise the temperature of 1 gram of water 1 degree C requires 1KiloCalorie. But to convert 1 gram of liquid water to 1 gram of water vapor requires 96 Kilo Calories. This is called the heat of vaporization.

So, let 1 cc of water evaporate from your tire and its the same as raising 96 cc of water 1 degree. The temperature of the water does matter but not nearly as much as the evaporation!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CivicSiRacer &raquo;</TD></TR><TR><TD CLASS="quote">And the Falken Azenis work best below 125 degrees or so. That is why during the winter STS rules And usually the top PAX takers are STS.</TD></TR></TABLE>
Nah, that's just because the STS PAX is bullsh*t.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Targa250R &raquo;</TD></TR><TR><TD CLASS="quote">
Nah, that's just because the STS PAX is bullsh*t. </TD></TR></TABLE>
from what i undedrstand, the sts pax was created on concrete where street tires dont gain as much advantage as r-compounds

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Lo-Buck EF &raquo;</TD></TR><TR><TD CLASS="quote">
from what i undedrstand, the sts pax was created on concrete where street tires dont gain as much advantage as r-compounds</TD></TR></TABLE>
That would explain a little . . .

But I still think it's BS that a Civic can add coilovers, bigger sways, wider wheels, polyurethane bushings, I/H/E, reprogrammed ECU, and still keep a PAX index of .784.

 

We all know, its not the car, its the driver Yadda.. Yadda.
If the Civic can do all that and still can't use R-compound tires, then IMHO 0.784 is ok.

The street tires are a big handicap, because if you are a good driver you are probably gaining 1 second on your time on a 40 second course. (vs. R-compoud tires)

If you want to talk unfair, I think DS has an advantage of running R-compound tires while STX is stuck with street tires, yet DS still has a better PAX.