> Okay, so lets talk about aerodynamic drag...o^)
I'm having problem stopping myself from starting to guess on this one... I think
the vacuums is the key here, find where the vacuums turn up around the car when
at speed :o).
/Christer
/Christer
> >> Since the tires are narrower, they'll also cool-off faster!!!
> >Because??? The reason for me asking is that I dont understand why they
> >should. The heat doesn't travel very well within ***, so I guess :o)
> most
> >of the heat probably stays close to the contact surface and is cooled down
> by
> >the air flow and pavement. As I said, I dont understand this yet :o).
> You just answered that one yourself Christer..
> Since theres less area or mass to cool-off, the process will go much faster.
/Christer
Heavens! Surely somebody with the overwhelming facilities of a
tribology lab can keep the power on?!! Rub a few sticks
together....that produces friction, therefore heat.....doesn't it? :o)
> I had some long explanations typed out and then the power went out. Damn
> Iowa weather. So here is the shorter, sweeter version.
This thread is producing some really fascinating stuff!
It's like having a university in my living-room, available 24 hours a
day!!
Of course, I don't understand a word of it but, Christ Almighty, did I
IMPRESS people at work today!!! Thanks guys!
> > Todd - I read your reply with interest and I think I understood some of
> > it :) I have a another question though. A friend of mine, who is in
> > science, has stated that the 'force' of friction (if I may call it that)
> > is the same regardless of surface area. That is, if you stood a brick on.....................yada yada yada.
Of course, if it's raining, they cool off a lot quicker.
> >> Since the tires are narrower, they'll also cool-off faster!!!
> >Because??? The reason for me asking is that I dont understand why they
> >should. The heat doesn't travel very well within ***, so I guess :o)
> most
> >of the heat probably stays close to the contact surface and is cooled down
> by
> >the air flow and pavement. As I said, I dont understand this yet :o).
> You just answered that one yourself Christer..
> Since theres less area or mass to cool-off, the process will go much faster.
> Another issue is the fact that a norrower tire will "flow" way much better
> thru the air, that a wide one - thus getting much more efficient cooling.
> Best,
> Edwin Solheim
> Check out The Paddock - a legendary site...
> for some cool Grand Prix Legends stuff and tips!
> (http://www.racesimcentral.net/)
No, Christer.
I drag my vaccuum around the house, cleaning behind the sofa like a good
husband, and I have no friction problems at all....it glides along very
smoothly.
I'm starting to understand this stuff, I think :o)!!
> > Okay, so lets talk about aerodynamic drag...o^)
> I love your attitude, Todd :o), and I'm looking forward to this discussion :o).
> I'm having problem stopping myself from starting to guess on this one... I think
> the vacuums is the key here, find where the vacuums turn up around the car when
> at speed :o).
> /Christer
I'm not sure what you mean by "flow", but turbulent air flow will cool the
tire more quickly than laminar (smooth) flow. Also, I may be
misinterpreting what you said, but for a given mass of *** the one with
more surface area will cool faster.
You're right, the molecules don't know what's goin on more than a couple
microns away. Let me try to explain. If one square cm has 100 bonds, then
ten sq cm will have 1000 bonds. Each individual bond adds to traction and
the number of bonds is dependent on the surface area of the contact patch.
So bigger tires have more bonds and therefor more traction. Got it?
Jer
> > >> Since the tires are narrower, they'll also cool-off faster!!!
> > >Because??? The reason for me asking is that I dont understand why they
> > >should. The heat doesn't travel very well within ***, so I guess :o)
> > most
> > >of the heat probably stays close to the contact surface and is cooled down
> > by
> > >the air flow and pavement. As I said, I dont understand this yet :o).
> > You just answered that one yourself Christer..
> > Since theres less area or mass to cool-off, the process will go much faster.
> > Another issue is the fact that a norrower tire will "flow" way much better
> > thru the air, that a wide one - thus getting much more efficient cooling.
A couple thoughts on heat traveling thru the ***. First, I think that
the whole tire should be pretty uniform in temperature because there is no
localized heating. Second, do race tires use steel belts? My guess is
they don't but I'm not sure. But if they do, then the steel would conduct
the heat pretty well.
Jer
>>Since theres less area or mass to cool-off, the process will go much
>faster.
>>Another issue is the fact that a norrower tire will "flow" way much better
>>thru the air, that a wide one - thus getting much more efficient cooling.
>I'm not sure what you mean by "flow", but turbulent air flow will cool the
>tire more quickly than laminar (smooth) flow. Also, I may be
>misinterpreting what you said, but for a given mass of *** the one with
>more surface area will cool faster.
Remco
> No, Christer.
> I drag my vaccuum around the house, cleaning behind the sofa like a good
> husband, and I have no friction problems at all....it glides along very
> smoothly.
> I'm starting to understand this stuff, I think :o)!!
;)
- Matt
Made me laugh out loud on that one, Bruce, thanks :o))).
/Christer
> --
> Regards,
> Bruce.
> ----------
Well, it's my wife, and she doesn't remember you, but stay away anyhow :o).
Then the traction from the bonds cant be proportional to the pressure. It seems as
if the bonds get stickier the lower the pressure is???
/Christer, dont understand the magic bonds :o(
:o)
Ur welkm!
> Made me laugh out loud on that one, Bruce, thanks :o))).
> /Christer
> > Of course, I don't understand a word of it but, Christ Almighty, did I
> > IMPRESS people at work today!!! Thanks guys!
> > --
> > Regards,
> > Bruce.
> > ----------