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08-20-2016, 04:21 PM | #45 |
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08-20-2016, 07:33 PM | #46 |
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08-22-2016, 01:30 PM | #47 |
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Yes, will be my 1st time up there. Exciting!
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08-22-2016, 05:35 PM | #49 |
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01-06-2017, 05:18 PM | #50 |
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Do we have any updates here?
For those who have enough track experience: Of all of the cosmetic aero items and kits out there, which brands/models are actually beneficial on the track for the E92 M3? I know that the right rear spoiler will reduce rear lift and turbulence (and slightly reduce top speed) and I know that the right wing will actually add rear down force (with a more marked impact on top speed reduction). I know that the right rear diffuser will reduce rear lift and turbulence of air exiting under the car and even potentially increase top speed, but that this also is most beneficial if the car is very low and essentially flat underneath. I know that the right front splitter will reduce front lift and further reduce turbulence under the car. I'm also familiar with Gurney flaps and canards (aka dive planes). Before anyone jumps the shark, I'm aware that apart from DTM and LM types, must of us will never see a wind tunnel or even run a CFD model on our cars, so I'm not looking for truly scientific details. What I'm wondering is if anyone has subjective opinions or, better yet, empirical evidence from track times, with any of the more commonly available aftermarket products. Form follows function for me, so I'm curious for more details from others. |
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01-06-2017, 06:17 PM | #51 | |
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01-06-2017, 08:23 PM | #52 |
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It's coming...I will offer the diffuser along with my roll cage and other goodies that I developed for the TT racer shortly for sale.
The diffuser was the single best improvement to drop my lap times. Stay tuned! Thanks
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01-06-2017, 08:51 PM | #53 | |
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01-06-2017, 08:54 PM | #54 |
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01-07-2017, 08:46 AM | #55 | |
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i will be adding an apr splitter and a gts style wing soon. i'm pretty consistent at willow springs, although i don't have AIM solo data, i'm pretty in tune with the feel of the car and i feel that i will be able to give an unbiased opinion on adding minor aero. i have been looking at adding a functional diffuser as well. i really like the aeroflow dynamics design.
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01-07-2017, 10:05 AM | #56 | |
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Buttonwillow: 1:54--->1:49 (The more fair comparison comparing MDM-on to MDM-on would be 1:54--->1:51) Big Willow: 1:29--->1:27 Chuckwalla CW: 1:58--->1:55 Laguna Seca: 1:39--->1:36 Auto Club: (Previous to getting aero my time was REALLY slow at ACS because I don't go very often, but then I went with aero and as a better driver)--->1:46 A few days ago, I wrote about some of my thoughts regarding aero in this thread. I think these are the kinds of opinions you're looking for: (posts 24, 27, 30) http://www.m3post.com/forums/showthr...1338859&page=2 |
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01-07-2017, 10:47 AM | #57 |
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pretty cool aero thread in here from our 335 brethren. dude quantifies it with some data as well.
http://www.e90post.com/forums/showthread.php?t=629044 http://www.trueformtech.com/
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01-07-2017, 02:26 PM | #58 | ||
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Last edited by shad0wfax; 01-07-2017 at 02:32 PM.. |
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01-07-2017, 02:30 PM | #59 |
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you saw the link in my post #57, right? thats as flat as i think it could reasonably get.
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01-07-2017, 03:17 PM | #60 |
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I did, and from the angles that I can see, it looked pretty darned good. I also noticed the barriers at the outboard of the body to channel keep the higher speed (lower pressure) air under the chassis where it belongs.
Last edited by shad0wfax; 01-07-2017 at 03:27 PM.. |
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01-07-2017, 03:29 PM | #61 |
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thats pretty badass. probably the best way to get downforce and i don't think it causes much drag. i really like how a weekend guy like me could use something like this for improvement without sacrificing the appearance of the car with more extreme aero.
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01-07-2017, 03:37 PM | #62 | |
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I'll have to look into their stiffness vs density. (I can't afford to do custom carbon fiber molds for this.) |
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01-07-2017, 03:49 PM | #63 |
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my friend and fab guy that built my truck and made me some mounting tabs for my apr splitter has worked with carbon fiber, kevlar, and balsa wood composites pretty extensively when building competition spec remote controlled planes. he is thinking we could build poster board prototypes, then buy the desired material and bond it together. i think the biggest challenge is that the bottom of the car isn't completely flat. all the little screws and crap holding that felt on are almost countersunk... so we'll have to make a small spacer sleeve over the bolts so the panel can screw on firmly without distorting the felt.
check out this website. raw materials aren't too expensive... its just time and effort. http://www.acpsales.com/OnlineStore.php?cat=5361
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01-07-2017, 05:08 PM | #64 | |
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I'm wondering if some thin aluminum would be easier to fabricate; I doubt that there would be much of a weight penalty compared to carbon fiber. Ideally, we'd be replacing all of the felt items and using existing fastener locations. Some aluminum pillars/sleeves/shims would allow for leveling. |
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01-07-2017, 05:23 PM | #65 | ||
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01-07-2017, 07:00 PM | #66 |
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I've never seen an E9x M3 with a full flat bottom. I believe the common goal is to have the splitter smooth out the underside to around the front axle. The APR is a pretty big piece and basically does that.
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