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  #51  
Old 11-06-2018, 01:16 AM
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69427 --- Well, here are a couple of ideas to consider.

Split radiator core in two. One side left, one right. Side exit exhaust augmented with fans. Could cleverly "hide" with mesh - or louvers. Exit forward of the front wheels.

OK - enough introduction - time for pictures.

This car has MASSIVE Downforce. It was tested in a wind tunnel and the results are part of the sales pitch.


The point here is the interesting approach to cooling:


I am surprised not to see the engine bay "isolated" from the remainder of the internal flow...


The side exit (quite cleverly with a Gurney forward to spill over the wheel well)


There is (perhaps) sufficient "real estate" in the sides of the C3 nose - maybe with a Greenwood mod:


You might lose a few "points" on subtle - but gain in performance.

Break/Break.

Been typing and grabbing HDDs for pics - Great work here! Pappy nice work on the tunnels.

rtj: was that meant to be a link to a spreadsheet or something for the coast down testing. I have a text that well describes - have yet to get to a "strip" to run. Another great text is the SAE 950626 in PT-49, I gratefully "inherited" form another member here. I'll scan and post "one day." Instructables has a short tut on capturing data for a run-down test too. Takes 2.




Cheers - Jim
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  #52  
Old 11-06-2018, 08:53 AM
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Jim

Interesting stuff.

I found some photos of a c3 with a horizontal rad, Iíll upload those later.

Iíll see if I can find the sae program. It should be available in excel.
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  #53  
Old 11-06-2018, 12:44 PM
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Default Grass"roots" Aero-testing

Good work if you can find it:



A lot to see here - wheel well, louvers, and the "pod" action. Pods not do C3, but think of moving/directing flow:


Cheers - Jim
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  #54  
Old 11-07-2018, 01:31 PM
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Last edited by rtj; 11-07-2018 at 01:34 PM..
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  #55  
Old 11-07-2018, 07:20 PM
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rtj - Nice find. That car has been for sale for a number of years. Wonder if it ever sold?

Here are a couple of laydown ideas from the Nissan Le Mans Prototype
here "unclothed" on a test run:



Here in the shop. Nice use of the real estate up front by using dual radiators too. Note the nice CF work (ala Pappy).


And, you can get too much downforce and grip at the front that may require some balance:


Impressive records with that 800-900 HP Camaro:

NASA STATS since January 2014
Starts 59
Wins 50
Podiums 58
Current win streak (since Oct 2014)
38 class wins
14 track records set or re-set
Cheers - Jim

Last edited by phantomjock; 11-07-2018 at 07:41 PM..
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  #56  
Old 11-07-2018, 10:12 PM
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Looks like youíve got a lot of info collected Jim.

This is in the Racing Vids thread.

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  #57  
Old 11-08-2018, 12:30 AM
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rtj --
I guess as you have been to collecting some great vids - I've been harvesting some build ideas - and mostly focused on "aero-mods" as I'm bent that way.

That is an awesome C4 mod.

Cheers - Jim
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  #58  
Old 11-09-2018, 02:13 AM
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Way out there. They don’t mention all the bumps around the outer rim. Those have to be pumping air.

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Old 11-10-2018, 10:02 PM
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Whats up with that C4 race car radiator?? It grabs air from the top and vents under (or elsewhere)?? to an aero-amateaur it seems counter productive.

More OEM aero tricks... Now that I know what Im looking at, Ive noticed most newer cars have at least one vortex generator on the side of each taillight. Very subtle. Im not sure how it could be implemented cleanly on a corvette though

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  #60  
Old 11-10-2018, 10:28 PM
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Quote:
Originally Posted by vette427sbc View Post
Whats up with that C4 race car radiator?? It grabs air from the top and vents under (or elsewhere)?? to an aero-amateaur it seems counter productive.
I’m not sure which way it flows, but unless he’s got big pusher fans underneath I’m assuming it goes down. Laying the rad down gives him the body work he wants up front. If the air dam is low it would be low pressure underneath. Normally the flow goes under the engine, so this would be a wash (no change). But, probably cools fairly well.

I imagine he’s developing this without cfd, a wind tunnel, or a big budget.

Originally (before today) I had assumed it must flow up, but after re-watching the vid, I’m leaning to down.

Last edited by rtj; 11-10-2018 at 10:34 PM..
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