ALL ARIZONA FR-S/BRZ OWNERS HOME PAGE

[Yruyur]

Originally Posted by martin86

Hey guys just dropping in to say hello. Got my BRZ back in June and just recently discovered this group was trying to reply but never activated my account haha. I'm down here in Tucson but might drive up for some events or meets in the near future.

Welcome!

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[Yruyur]

Originally Posted by gmookher

I'm back on the road as of today..

Welcome back !!

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[SMOKETREES]

Originally Posted by gmookher

I'm back on the road as of today..

Glad to hear this Mook

[AlexFi]

Hey guys! Thanks so much for all you people that participated last Saturday, that was a blast. The guys at the shop here had so much fun, we're going to standardize the track, and start a leaderboard for times Top Gear Style for next month! I hope everybody had as much fun on your end because for us it was a great change of pace.

Pictures will be up soon, I'm just collecting the pics and vids from those who were taking them.

So excited about this exhaust project, and as was mentioned, we did get our plotter, so maybe if when Jeff gets back up here we'll figure out templates for the font bumper and side panels to cut out for a "kit" of sorts. Also that rear trim you did Jeff, that was a good addition to what we did Wednesday!

[AlexFi]

Mook, You are going to be at SEMA this year?

[mattles]

Love the idea of a Local Motors Test Track Leaderboard. Time to buy tires :3

[gmookher]

I wish i had tickets..

[Ninjin]

@RedLeader

Disclaimer: I am not an automotive engineer or any sort of expert, and I'm not making any sort of promise that I'm actually right.

I wouldn't worry about underbody panels causing lift as long as you have a decent-sized and functional front splitter. Turning the car into a giant airfoil is actually exactly what you want to happen. The key idea being that it's inverted compared to a plane's wing, so the whole body shape produces downforce. To that end, anything you can do to control the air that gets under the car (like use a splitter to prevent extra air from being forced under the car) and speed up flow under the car, will generate downforce. I think a real aerodynamicist would say that a key point is to make sure that the underbody Aero is a cohesive package. The splitter, underbody panels, side skirts, and diffuser need to work together to generate maximum downforce.

I have a few books that are good starting points on the subject if you are interested in hearing even more that I've already put into this boring post.

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[Yruyur]

Originally Posted by AlexFi

Mook, You are going to be at SEMA this year?

If you guys are looking for a car to mod out and bring to sema feel free to take mine

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[Yruyur]

Originally Posted by RedLeader

I've been trying to come up with some things to test out with LM's new plotter, but now that the machinery is there, I'm flat out of ideas of what to do.

I HAVE been thinking about doing a full undercarriage cover, for aerodynamic purposes, since most of our drag is generated by the undercarriage, but I worry about it causing the car to lift by turning the car, essentially, into a giant airfoil. Obviously, down force ducts could be added, but in a way, it'd be more trouble than it was worth. I'd still love to do it, but I'd want to test it out in a wind tunnel first (scale model obviously) to see if the smooth underbody caused the car to lift.


On a totally unrelated note, new username! Kestrel is now RedLeader.

Add graphics..

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[EZWood]

^^^ I like those vynils

[RedLeader]

Originally Posted by Ninjin

@RedLeader

Disclaimer: I am not an automotive engineer or any sort of expert, and I'm not making any sort of promise that I'm actually right.

I wouldn't worry about underbody panels causing lift as long as you have a decent-sized and functional front splitter. Turning the car into a giant airfoil is actually exactly what you want to happen. The key idea being that it's inverted compared to a plane's wing, so the whole body shape produces downforce. To that end, anything you can do to control the air that gets under the car (like use a splitter to prevent extra air from being forced under the car) and speed up flow under the car, will generate downforce. I think a real aerodynamicist would say that a key point is to make sure that the underbody Aero is a cohesive package. The splitter, underbody panels, side skirts, and diffuser need to work together to generate maximum downforce.

I have a few books that are good starting points on the subject if you are interested in hearing even more that I've already put into this boring post.

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My basic understanding of airfoils (from my high school aeronautics engineering class, and being that I work on airplanes) is that if air has to travel farther OVER an airfoil then it moves Faster, causing low pressure, and therefore Lift. Causing the car to Lift is the exact opposite, obviously, of what we want to do. I'm not necessarily looking for downforce, but just to smooth the airflow under the car to reduce drag, which would increase top speed AND fuel economy. I'm trying to build my FRS into an SCCA STR class autoX car, so I'll have to double check the rules on splitters and body modifications.
*Edit: were it a factory part, it'd be Kosher, but it wouldn't be, so I'd have to take it off for competition*

Mostly, this idea was to see if paneling the under carriage to make it a smooth surface would have any noticeable effect on either top speed, stability, or fuel economy. Purely a test, so to speak.

As to graphics, I'm not a big fan of covering my car in stickers, advertising or otherwise. Mostly they look tacky, and I'd like to keep my car clean. NOW, if the LM plotter can cut SCCA numbers and class designation characters on magnetic tape stuff, that'd be awesome!

[JDLAutoDesign]

Started on ours today! A few shots from today. Once prototypes are done ill start a vendor thread and post new pics

[Yruyur]

Sweet!! If you need another test car let me know. Are you doing uel headers too?