Ultra Cool brake fans

[92AWDHX40]

Simple enough design.

 

[PieEyedPiper]

I have one sitting here on my desk, but I believe it's live inventory, not a sample, so they probably wouldn't let me send it out for free to be tested.

I'm curious though; how would you go about testing something like this?



The inline blowers that I sell range from 140 CFM to 240 CFM depending on length and diameter. I have no clue what kind of CFM one of these Ultra Cool fans moves.

I only have basic measurements of it. It's roughly 11.625" in diameter and an overall thickness of about 2".

My instincts tell me that this product should be able to hit those kinds of numbers or greater. I was thinking we'd see something around 1600rpm @ 80mph. You blowers surely spin much faster but they need to due to not being 12" across.

I dunno, I think they're neat.

 

[bmoha7321]

Directionally vaned rotors work similar to these?
TCE offers directionally vaned rotors. I was told they make a difference over a traditional OEM straight vaned rotor.
I couldn't see 1G or 2G swirlies do much of anything.
I'm trying to remember the supercar I saw it on... but one of the newest hypercars has a piece that bolts to the outside surface of the wheel that grabs air and forces it thru the spokes of the wheel... Straight thru to the vanes of the brake rotors. It was pretty neat.
Also I read that titanium is widely used. As titanium is terrible at heat transfer. They put a spacer block of titanium between the brake pad and the brake caliper to help keep the heat in the rotor and pad and not in the brake fluid.
Also I'd swear I just read somewhere that a newer supercar has fluid cooled brake rotors. Positive of it.

 

[PieEyedPiper]

Directionally vaned rotors work similar to these?
TCE offers directionally vaned rotors. I was told they make a difference over a traditional OEM straight vaned rotor.
I couldn't see 1G or 2G swirlies do much of anything.
I'm trying to remember the supercar I saw it on... but one of the newest hypercars has a piece that bolts to the outside surface of the wheel that grabs air and forces it thru the spokes of the wheel... Straight thru to the vanes of the brake rotors. It was pretty neat.
Also I read that titanium is widely used. As titanium is terrible at heat transfer. They put a spacer block of titanium between the brake pad and the brake caliper to help keep the heat in the rotor and pad and not in the brake fluid.
Also I'd swear I just read somewhere that a newer supercar has fluid cooled brake rotors. Positive of it.

It's the lambo.
http://forgiato.com/blog/tag/lamborghini-reventon-wheels/ this appears to be a different attempt at this idea. The reventon has something different on it when I saw it on top gear. At least I think so, my memory.. well yeah.

Ah, here we go:

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[bmoha7321]

Not the ones I saw. I think the ones I saw were on a Konigess. er However you spell that company. Maybe Porsche. I forget. It was actually a dish that bolted on to the face of the wheel. that stuck out slightly farther than the edge of the rim. So as it drove down the road the leading edge would grab passing air and cram it thru the center of the brake rotor. Real neat.

 

[1990AWD]

The first thing I was thinking when I saw those is are they going to add a lot of rotation mass? If you're having to spin four fans on your wheels, that's gonna require a lot of extra horsepower just to turn them at speed, no?

 

[PieEyedPiper]

The first thing I was thinking when I saw those is are they going to add a lot of rotation mass? If you're having to spin four fans on your wheels, that's gonna require a lot of extra horsepower just to turn them at speed, no?

Naw. I'd imagine the impact to turn out be not significant.

 

[bmoha7321]

They don't look to weigh alot. Just looks like stamped steel. 4 of them turning might be about the same for wind resistance as the radiator fan that runs off the motor on my old beater ford exploder v6

 

[1990AWD]

I'm not saying they way a lot, I'm saying I think they would take horsepower to turn quickly because of the air they move. For example, I work on diesels for a living, and those massive fans turning 2-3000 rpm takes a lot of horsepower. These are much smaller, but there's four of them. I'm just thinking that might add up when your at speed.

 

[red_devil]

Not the ones I saw. I think the ones I saw were on a Konigess. er However you spell that company. Maybe Porsche. I forget. It was actually a dish that bolted on to the face of the wheel. that stuck out slightly farther than the edge of the rim. So as it drove down the road the leading edge would grab passing air and cram it thru the center of the brake rotor. Real neat.

I feel like you would want to do the opposite. It would reduce turbulence and remove heat while using ducting for cooling.

 

[99gst_racer]

^^^ I agree. Chances are it was designed to pull hot air out rather than cool air in.

 

[bmoha7321]

I think it did both.

I ran across a pic of the new Koenigsegg Agera R. One pic of it has full carbon fiber wheels and another pic of it has wheels that are bladed. The short writeup with it states that the wheels are bladed to extract brake heat.

I am still looking for the pic of the wheel with the plate on the surface. thinking it was Porsche's new hybrid supercar. I'm old. Memory bad. But it was really neat because it was a whole package deal; the dish bolts to the face of the wheel that forces air in and thru the spokes of the wheel. the air flows thru corresponding channels thru the brake disc and then back out the same way it came in. Fresh cool air in. Heated brake air out. Really neat.

 

[PieEyedPiper]

I'm not saying they way a lot, I'm saying I think they would take horsepower to turn quickly because of the air they move. For example, I work on diesels for a living, and those massive fans turning 2-3000 rpm takes a lot of horsepower. These are much smaller, but there's four of them. I'm just thinking that might add up when your at speed.

These are only going to spin at ~1500rpm @ 80mph so you wont see them at 3000 until something like 160mph.
The mass of the car, it's wheels, momentum, etc. are all very very powerful. I'd be much more concerned with my tire's rolling resistance then these little guys. Besides, if you ran them, you'd have a purpose built car that would gladly make such a sacrifice for effective brake cooling.