Functional Rear Diffuser

jcosta79 · 06-28-2013, 10:41 PM

Quote:

Originally Posted by Masterbeatty

I have been researching around for a functional rear diffuser, Nothing for our cars. I have decided to start designing one myself.

Question 1: Since i do not have a wind tunnel in my back yard i was wondering if getting a scale model and making a mini tunnel and doing tests with that to see if it will work well is a worth while idea?

2: I know for it to work the way it is designed a spoiler is also needed. the APR starts to add downforce around 40 MPH, so i was thinking about getting that and using a diffuser to futher create a suction force under neath. has anyone used this particular spoiler first hand and noticed better handling?

3: Does anyone have a home made FUNCTIONAL rear diffuser and would help me make one of my own?

4: Should i even bother?

The reason i want one is because i plan on racing next year. I want the most out of my N/A car and use aerodynamics to my advantage. Also since i work with FRP/ CF and have lots of spare time i can possibly make a few more for those that would want one.

Thanks

If you're serious about racing and adding real downforce, I would start with getting a real wing and mounting it to the frame (not the trunk lid) of the car.

Of course once you do that, to balance the car you are going to need a functioning front splitter; again mounted to the frame so that it doesn't pull off your bodywork once it starts creating real downforce.

Don't focus on how much downforce you are generating (at least at first anyway), worry about overall aero balance and how it affects the handling of the car. In other words, don't put a huge wing and rear diffuser on the car and then neglect the front of the car. The car will handle like *** if you do.

View Poll Results: functional Rear Diffuser, What should i do?
Mini tunnel idea	1	3.57%
Dont bother	10	35.71%
BUG APR to make one	4	14.29%
Interested in one	13	46.43%
Voters: 28. You may not vote on this poll

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