Engine bay aero?

[freebeard]

Can you move the radiator to the rear of the car, fan the air from under the rear, through the radiator, and exit it through a new grill between the tail lights, filling in that low pressure area?

Instead of saying NO, why don't YOU let Us know why it hasn't worked?

Instead of rejecting others' contributions, you might do a site search. Here's one example of what you can find, a thread from 2013 that kach22i was in:

https://ecomodder.com/forum/showthre...ery-26356.html

[Vman455]

Originally Posted by Joenavy85

The only racecars I can really think of that relocate the radiator in any way are some rally cars, where aero is minimally important.

And Indycars:



And prototype racers:



And aero is very important in the series those types of cars race in.

Perhaps the reason we don't see rear-mounted radiators in street cars isn't that it's unfeasible, but it's unfeasible at an acceptable cost and with typical packaging. Just look at the size of the ducts on the LF-A:

[Angel And The Wolf]

Originally Posted by Joenavy85

Part of the whole thing of coming forward with new ideas is doing research on them prior. It's not on us to prove you wrong, but on you to prove yourself right.

It's not on me to prove a suggestion to you and that mouse in your pocket. It's just a suggestion, and I make them all the time. You don't have to look into them if they are not addressed to you.

[freebeard]

We may as well be nice to reach other, OP hasn't posted since permalink #1.

"That's a bag of cats" ≠ NO

Instead of saying NO, why don't YOU let Us know why it hasn't worked?
...
It's not on me to prove a suggestion to you and that mouse in your pocket.

What makes you think that's a mouse?

edit:
The question isn't about cooling, it's about cleaning up the engine compartment to reduce internal drag.

VW operated successfully for decades with rear engine cooling. The trick is the shape of the roof and the careful shrouding around the cooling fan.


https://c1.staticflickr.com/3/2689/4...b3f0b781_b.jpg

A German Look Beetle will have a plenum to calm the intake air for induction. A front engine, for balance:


https://i.pinimg.com/736x/56/c9/cc/5...ef00ac7e9f.jpg

[kach22i]

Originally Posted by freebeard

Instead of rejecting others' contributions, you might do a site search. Here's one example of what you can find, a thread from 2013 that kach22i was in:

https://ecomodder.com/forum/showthre...ery-26356.html

Good Thread, rear radiator shown on post #32 Probe IV, and twin rear radiators post #51 Lexus LF-A.

Still not sure where that Lexus is drawing feed air in from, must be from under the car via tunnels like an F1 or Indy car.

EDIT:

Originally Posted by Vman455

...Just look at the size of the ducts on the LF-A:

Thanks for posting that image, it really clears it up.

I just didn't see any openings on the side large enough to do the job, they hide them in lieu of highlighting them. Guess the incorporation is just too slick for my eyes at a quick glance.

http://www.thedetroitbureau.com/2009...11-lexus-lf-a/

The biggest visual difference between the 2008 concept and a production Lexus LF-A is this scoop.

So it wasn't on the concept we looked at a couple of years ago?

There’ve been a few modest changes to the body shown two years ago, most notably to the fighter jet-like scoops that sits, about mirror height, just behind the two doors. They’re enhanced to draw as much air as possible into the LF-A’s rear, where twin radiators are mounted.

I think they were just much smaller on the concept FL-A.

They still look too small for the job, but I bet it's been tested to death and is spot on.

EDIT-2:

More on the FL-A Concept as the old links are in the old thread are somewhat disrupted by time.

Lexus LFA Concept
https://en.wikipedia.org/wiki/Lexus_LFA



These inlets remind of a recent McLaren model.

The 2018 McLaren 720S has 15 air inlets, and here's what each one does
https://www.motorauthority.com/news/...-each-one-does

The side-mounted intakes are referred to as "gills," and each feeds the high-temperature radiators at the back of the car, and also helps create low pressure to draw air through the radiators more efficiently. There are upper and lower gills on each side, bringing our total number of vents to 10.

I don't think they were worried about it filling up with snow.

[kach22i]

Originally Posted by Angel And The Wolf

Instead of saying NO, why don't YOU let Us know why it hasn't worked?

I didn't say "NO".

I said it was a bag of cats.

I also said see Ford Probe IV, vintage race cars and current race cars.

In one of the old threads linked to mention of 24 Hours of LeMonds was made, in addition check out many off-road buggy type vehicles.

Bag of cats isn't NO, a bag of cats says be careful you could get scratched and it probably will not be worth it.

I meant it in humor, not as an attack.

[Angel And The Wolf]

Originally Posted by freebeard

What makes you think that's a mouse? [/URL]

It's just that I've seen the language "tell us" or "show us" many times used to say "It's you against all the rest of us". Maybe I over reacted. I apoligize.

Originally Posted by freebeard

We may as well be nice to reach other[/URL]

I agree. kach22i. I apoligize.

[Vman455]

Originally Posted by kach22i

Thanks for posting that image, it really clears it up.

I didn't know the LF-A had rear-mounted radiators until I read through that thread. That's how subtle those openings are; I had assumed they were for a differential cooler like the 2013-2017 Viper or 2014+ Corvette.

Originally Posted by kach22i

I don't think they were worried about it filling up with snow.

On those tires, that thing probably doesn't even move in the snow. I pulled the Viper out of the garage in the snow once just to rearrange some things and it took me half an hour to get it back in.

[kach22i]

Originally Posted by Vman455

On those tires, that thing probably doesn't even move in the snow. I pulled the Viper out of the garage in the snow once just to rearrange some things and it took me half an hour to get it back in.

I have many similar stories.

I used to have super sticky summer blend Yokohama tires on my old 911 (not good below 50 degrees), went to put gas in it for the winter at the nearby gas station. The temperature had dropped and there was a slight dusting of snow blowing across the road. I decided that a 3/4 full tank was good enough as I slid across the road sideways trying to make it back to my garage. I never left the side streets, never got the gas.

I don't think the McLaren people worried much about their cars being driven in the snow or in the rain for that matter with that intake design.

EDIT:
Vman thanks for bringing up the point of other inlets, lead me to discover this about the FL-A.

Dec 2011
2011 Tokyo: Lexus LFA Unclothed, and How it Was Built - Diorama Style
Dec 2011
https://www.motortrend.com/news/2011...-style-141375/



Apparently not all of the FL-A's cooling requirements are addressed at the rear, that makes much more sense to me now. A V-10 takes a lot of cooling, those tiny rear/side window inlets are not alone.