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  #331  
Old 06-24-2020, 06:50 PM
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Nice work mfain! Thanks for posting the pics.
Thanks guys. I am working several new aero projects for the car and will post photos when able.
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  #332  
Old 06-26-2020, 03:26 PM
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Pappy -

Like to hear more about your Lotus 78/79 inspired side tunnels. I have had side tunnels in the SR side pods for about 3 years now. Built as 10 degree and 20 degree. Haven't"swept" with an airfoil section - just straight, flat ceilings. Butt dyno says it works well. Plan has foam and glass inserts, not built yet.

I had side skirts (Chaparral-style) and that was like the car was literally on rails. They were 2 inch aluminum, and Tech missed seeing them as we teched on grass. Pulled them after a weekend to stay "legal."

Faster motor? Maybe a servo is the answer. Placement of the control arm is key to keeping the loads down. On my back burner is an Active Aero module to be semi-autonomous, sort of wings level trim, that "paddles off" under acceleration (DRS) and under braking - increases. I'm sure we have some brighter EEs here than me.

I have planned a complete testing of some of the components ion the SR. It has been the Mule for the "vette mods, and once I get a few bugs sorted out and the test done - I'll share too.

Cheers - Jim
Hey Jim,

I have the tunnels/belly pan/diffuser off the car right now doing some undercarriage work, but I was able to take a couple of photos to show how the diffuser tunnels are set up. The sketch shows how the tunnels blend into a rounded leading edge that is actually an extension of the firewall. The area highlighted at the rear is the portion of tunnel that is shown in the following photos. Photo 2 shows the side skirt (under construction at the time of the photo) and the third photo is of the tunnel assembly with side skirt. The last photo shows the actual diffuser tunnel from the back looking forward - inverted wing profile with a 12 degree diffuser discharge angle (including vehicle rake).

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Incredible workmanship and engineering!
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  #333  
Old 07-12-2020, 09:34 PM
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They say a couple of things that donít really sit right with me, but it is interesting.

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  #334  
Old 07-13-2020, 12:02 AM
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  #335  
Old 07-13-2020, 01:55 AM
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GSpeed is building some interesting stuff. They are running a C8 and their in-house C5 in the Ultimate Track Car Challenge at the end of the month. This car has no cage (just a roll bar) so it can't run in the unlimited classes - that means it must be fairly heavy to stay in class with the high hp LME motor. It does have some interesting and probably effective aero. Look up GSpeed (Cresson TX). They have tried some wild aero stuff with their C5 and they usually run faster than the NASA T1 times with their T2, very detuned LS. They will probably show up at the UTCC with 600+ wheel horsepower.
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  #336  
Old 07-13-2020, 09:40 PM
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GSpeed is building some interesting stuff. ......... Look up GSpeed (Cresson TX). They have tried some wild aero stuff with their C5 and they usually run faster than the NASA T1 times with their T2, very detuned LS. They will probably show up at the UTCC with 600+ wheel horsepower.
Looked them up on the web and checked out their Facebook page. Time attack is not in my budget, but looks interesting.

I thought this car was pretty well thought out.
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  #337  
Old 07-14-2020, 09:36 PM
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Some details like active flaps in the front splitter, what appears to be wheel cooling fans, and double diffuser.

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  #338  
Old 07-15-2020, 06:27 PM
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Some details like active flaps in the front splitter, what appears to be wheel cooling fans, and double diffuser.

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WTF is with that guy's voice? I made it to 21 seconds, and then I had to exit the video.

Any cliffs?
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  #339  
Old 07-15-2020, 07:23 PM
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CC ?
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  #340  
Old 07-15-2020, 10:13 PM
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Some details like active flaps in the front splitter, what appears to be wheel cooling fans, and double diffuser.

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WTF is with that guy's voice? I made it to 21 seconds, and then I had to exit the video.

Any cliffs?
You could turn off the sound, as he really just points out features.

Yes, the voice takes some getting accustomed to, but the cool features I noticed are:

the flaps in the splitter. Iím guessing at high speed on straight line they open to reduce downforce and/or reduce cooling flow(drag). Just a guess.

The outer wheel rim features scallops, which I assume means brake cooling fans and possibly more downforce. That Porsche got more downforce and brake cooling with theirs, granted it was differently designed.

The dual diffuser is there, not sure if they are better, or just allow room for transmission in such a dropped car.

The driving part I pretty much skipped. Oh yes big $$$$$!
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