That would most likely be because a more massive rotor, again will not heat up as much as a thin one. Just like my punch example, the more mass an object has the more easily it can deal with external input, wether heat or force/momentum.

 

Some thoughts:

99.999%+ if the crashes in/around Groom Lake aren't piloted by aliens, but I'm not allowed to tell you if the airvehiclels are alien or not.

One of the reasons extremeties get cold first is that they are expendable. The body keeps the vital organs at operating temp even if it needs to sacrafice fingers, toes, etc. Blood is withheld from the extremeties because too much heat is radiated there, the blood cools, and therefore the body temp drops. I'm not sure how this works with aliens, though.

If 80% of your body heat escapes from the top of your head, is that because it's empty... or because when the body is too warm, it's the brain that is effected first, so the best cooling is near it? Just picking on you, Dr. You make some very worthwhile points.

Some bicycles are using hardcoated aluminum rotors. A friend of mine has developed some. Boy do they get hot in a hurry! They do dissipate the heat quickly, of course. He tells me that serious off-road bicyclists will pay about $1 per gram they can save in vehicle weight! That's why he developed them. We make a few parts from 7075 aluminum for him to replace carbon steel parts where the strength of titanium isn't needed. I'm always amazed at the lengths folks go on things like this.

 

I am going bald. Once this process has proceeded to completion, will my cooling system be more or less efficient? Perhaps we should be running hairy rotors instead of hole-y rotors. These are not to be confused with holy rollers, who often become quite oveheated.

BTW: the idea of drilling holes in your brake rotors strikes me as very stupid. Ditto for thinking that it looks kewl.

Rich Krause

 

Blood also has further to flow to the extremities, if you picture Robert Wadlow and remember how he died, the length that his nerves had to travel basically did him in, when his ankle developed an infection he didn't feel at all. So it also would make sense that heat is going to disperse on its way to the target, the further out it is

As for the brain, heat rises and its the highest point on your body. Where does electricity leave the body when you touch a Van de Graaff generator? If your hands are down, it leaves through the head - and your hair stands on end. If you touch electricity and you dont want to fry your eyes etc, raise your hands (if your suuuuuuure)

The drums on the back of a 240Z are aluminum with steel lining, the smaller/lighter 510 has a cast iron hub, since thier car got an earlier start maybe thats why.

 

moving to medical section

 

Ya move that to the BIO section....LOL

I have a question.....this may be really stupid, but what about Inconel rotors? Shouldn't weight more than traditional rotors, can handle lots of heat, doesn't expand hardly at all, and I would think it would be a good imporvment. But maybe not.

I think slotted rotors are the best bet for us now, if we hand durability and great performance.

Hunter

 

I dont know much about the inconel, but aren't the copper rotors? i dont know if they are for cars or not... copper is a VERY soft substance and it would just warp with your first ride around the block. Maybe its an alloy

I disagree aobut the slotted though. Unless you are offroading or it is wet (and the wet is debatable, i dont see water getting under the pad when it is braking), I really dont see the advantage in having slotted rotors other than a "phat" appearance mod Bling bling? tight whip? off da hook? the schnizzle foe dizzel? I dunno, for a 19 year old, i'm pretty bad at this slang/ebonics thing

The surface area gained is minimal and its the outboard rotor that is the slotted, but the inboard is hottest. (unless they slot both?

With that said, I'm going to try a set of slotted rotors on my truck. the sand dunes ate through the blank ones
shibby

 

Vented, normal old style-less rotors for me

 

Non-bio section:

I had a '68 510 with the BRE flares and air dam. Swapping the 240Z alum rear drums was a normal upgrade, as was swapping the stronger Z rear end. Z was heavier, 50%+ more powerful and much faster than the 510, ergo the better brakes and stronger parts from the factory.

Aluminum drums, with iron (not usually steel) friction surfaces go back at least into the '20s. Finned Buick aluminum drums of the late 50s were the kewl anchor for rods before discs. Ironically you can now get street rod brakes that look like the Buford finned drums but have discs inside. Whew! It's using aluminum as the friction surface that's rare.

Cast iron can take 1300F +, while inconel might take nearly twice that, but pads would be a big problem. When brake temps get above what iron can stand the way to go is carbon rotors and carbon pads (carbon/carbon). Big benefits but bigger costs.

FWIW, Inconel has about 97% of the thermal expansion rate of cast iron.


Bio-section:

As for Rich's comment: IMO hair is an insulator, and my own insulation is thinning. To compensate for the heat loss, I added insulation in the mid section.

Also, IMO, there isn't much convection in the body. Brain has huge, moving blood supply, skull bones conduct heat fairly well, and there's not much insulation (fat) between the skull and the scalp. That promotes good heat rejection when needed to maintain brain temp. I'm not an MD nor a "holey-roller", but from an engineering point of view this appears to be the design. Rich, am I out in la-la land here?

 

Since wearing a hat helps retain heat, likewise hair probably does some of that as well. I used to have long hair, and yes I would say I was always warmer, versus now with a pretty close cut.

 

im starting to lose my hair
and i'm only 19

go figure, i just moved to michigan too

the only people that look good bald are big fat people
<----5'7'' and 160 lbs

 

A^2 ??

Just trying to decipher your "Location"

 

that would be squared

i'm cubed- as in a cubicle

I'm in and around detroit area

 

Sorry to hear that.

Ann Arbor often called "A squared". Though you might be @ U of M.

Spent a lot of time near Detroit; SStrokerAce's Mom is a Detroit native. We used to rac...errr, cruise Woodward and Telegraph in the muscle car era. Sometimes in "company" cars. (I'm old!)

 

In in the novi area. right between 275 and us 23. about 20 miles west of telegraph