Diffusor

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Re: Diffusor #168326 07/09/2006 14:39 07/09/2006 14:39
A Anonymous Unregistered
Anonymous Unregistered A	per: jojo hehe tror smoothie boodie är intresserad oxå.

Re: Diffusor #168327 07/09/2006 15:16 07/09/2006 15:16
Joined: Dec 2005 Posts: 3,158 Near Reading JohnS I need some sleep
JohnS I need some sleep Joined: Dec 2005 Posts: 3,158 Near Reading	good idea!

Re: Diffusor #168328 07/09/2006 15:20 07/09/2006 15:20
A Anonymous Unregistered
Anonymous Unregistered A	I have a feeling that a 'proper' rear diffusor is actually part of the underbody aero of the car. can anybody who has looked under a , for eg , Elise 111s/ Exige , comment ? pic : http://www.seriouswheels.com/2005/2005-Lotus-Sport-Exige-R-1600x1200.htm .

Re: Diffusor #168329 07/09/2006 15:35 07/09/2006 15:35
A Anonymous Unregistered
Anonymous Unregistered A	.... wow .... just look at that rear end ... and all that carbon fiber ..... drool ...

Re: Diffusor #168330 07/09/2006 15:39 07/09/2006 15:39
A Anonymous Unregistered
Anonymous Unregistered A	Looks just like our Coops!

Re: Diffusor #168331 07/09/2006 15:41 07/09/2006 15:41
A Anonymous Unregistered
Anonymous Unregistered A	must buy....cant resist...sell my soul...:S I think it will help some not hugly, and it will look cool as hell

Re: Diffusor #168332 07/09/2006 15:41 07/09/2006 15:41
A Anonymous Unregistered
Anonymous Unregistered A	Per what is it about the handling of your car that you don't like? Is it straight line stability? or oversteer in high speed corners. Remember aero aids will only work at higher speeds, and I find that up to about 80 mph, the Coupes inherent trait is still understeer. Beyond this the Coupe is far more neutral (well with uprated ARB's front and back) beyond 80 mph, but even at high speed I don't get the feeling that the back needs any more grip? Joe

Re: Diffusor #168333 07/09/2006 15:54 07/09/2006 15:54
A Anonymous Unregistered
Anonymous Unregistered A	Very good views Joe. I have no trouble at all with the handling really. My view is you can't get to much grip... I've done a lot already, -1,5deg camber, battery in boot, Eibach's etc. etc. In all I'm impressed with the handling as it is. Only other things to come are rear ARB (novitec), Bilsteins (already ordered) and Toyo R888 (lying at home!) (Actually, this is ca 80% fun creativity for me, tinkering about on a rainy afternoon ) Sorry bout so few/bad pics. I'll do some final touches and post some more next week!

Re: Diffusor #168334 07/09/2006 16:00 07/09/2006 16:00
A Anonymous Unregistered
Anonymous Unregistered A	Quote: I have a feeling that a 'proper' rear diffusor is actually part of the underbody aero of the car. can anybody who has looked under a , for eg , Elise 111s/ Exige , comment ? I've been under Speedster's and Elise's a few times (there are some here at Volvo Design parking..) and mostly they've been aftermarket products. Aluminium, long and bolted to the underpan, seem to work fine for Speedster's. Although they tend to slide off the road anyway every now and then..

Re: Diffusor #168335 07/09/2006 16:15 07/09/2006 16:15
Joined: Dec 2005 Posts: 2,033 I WANT F40 S S1MMA Competition Level
S1MMA Competition Level S Joined: Dec 2005 Posts: 2,033 I WANT F40	look here for more examples: http://uk.search.yahoo.com/search/images...amp;fr2=tab-web Sideways a LOT

Re: Diffusor #168336 07/09/2006 16:28 07/09/2006 16:28
Joined: Dec 2005 Posts: 2,194 Göteborg, Sweden Freddan72 Competition Level
Freddan72 Competition Level Joined: Dec 2005 Posts: 2,194 Göteborg, Sweden	Quote: Quote: I have a feeling that a 'proper' rear diffusor is actually part of the underbody aero of the car. can anybody who has looked under a , for eg , Elise 111s/ Exige , comment ? I've been under Speedster's and Elise's a few times (there are some here at Volvo Design parking..) and mostly they've been aftermarket products. Aluminium, long and bolted to the underpan, seem to work fine for Speedster's. Although they tend to slide off the road anyway every now and then.. Per, I think that is more due to the driver not the car Here is one diffusor for the Speedster clicky Coupé Fiat 20V Turbo Plus 1999, T19 Mitsubishi turbo https://youtu.be/O9qrLj3Ap00 Now FCP Stage3!

Re: Diffusor #168337 07/09/2006 16:29 07/09/2006 16:29
A Anonymous Unregistered
Anonymous Unregistered A	That's not too impossible to build for the Coupe. Just need to weld alu

Re: Diffusor #168338 07/09/2006 17:44 07/09/2006 17:44
A Anonymous Unregistered
Anonymous Unregistered A	Quote: Per, I think that is more due to the driver not the car Hmm, so what you're saying is Speedster drivers are the worst drivers?

Re: Diffusor #168339 07/09/2006 20:50 07/09/2006 20:50
A Anonymous Unregistered
Anonymous Unregistered A	More pics in this swedish thread: http://rejsa.nu/forum/viewtopic.php?t=22625&start=21

Re: Diffusor #168340 07/09/2006 22:09 07/09/2006 22:09
A Anonymous Unregistered
Anonymous Unregistered A	Very nice my friend

Re: Diffusor #168341 07/09/2006 23:39 07/09/2006 23:39
A Anonymous Unregistered
Anonymous Unregistered A	Fan va tufft. Nästa steg blir att göra hela undersidan på bilen plan och fin?

Re: Diffusor #168342 14/09/2006 20:21 14/09/2006 20:21
A Anonymous Unregistered
Anonymous Unregistered A	Here's some new pics from the finished version: http://sfk.ibk.se/forum/attachment.php?s=50b118a953df04a4d9acd52a1d2288c0&postid=54040 http://sfk.ibk.se/forum/attachment.php?s=50b118a953df04a4d9acd52a1d2288c0&postid=54041 ..to compare with the std. Plus next to me. Jim; I see what you mean about the rest of the floor not being totally flush/flat. Having said that, I was under a bling new BMW 530 yesterday and boy - that room for the rearaxle is huge!! Lot bigger than ours. After that it was smooth and even but.. Then again you never REALLY know with aerodynamic's until you try in a tunnel...

Re: Diffusor #168343 14/09/2006 20:49 14/09/2006 20:49
Joined: Dec 2005 Posts: 928 Wimbledon paddy Enjoying the ride
paddy Enjoying the ride Joined: Dec 2005 Posts: 928 Wimbledon	Looks good What exhaust do you run, is that a miltec?

Re: Diffusor #168344 14/09/2006 21:19 14/09/2006 21:19
A Anonymous Unregistered
Anonymous Unregistered A	Thanx mate! That's a custom built stainless 2.5" with double big mufflers (free-flow), built by A-Alt Avgas here in Gothenburg. Did think of Miltek - but it wasn't to be..

Re: Diffusor #168345 15/09/2006 01:11 15/09/2006 01:11
Joined: Dec 2005 Posts: 2,194 Göteborg, Sweden Freddan72 Competition Level
Freddan72 Competition Level Joined: Dec 2005 Posts: 2,194 Göteborg, Sweden	Nice one Per Let see how it works in the 360degree bend after Älvsborgs bridge towards Majorna Coupé Fiat 20V Turbo Plus 1999, T19 Mitsubishi turbo https://youtu.be/O9qrLj3Ap00 Now FCP Stage3!

Re: Diffusor #168346 15/09/2006 01:22 15/09/2006 01:22
A Anonymous Unregistered
Anonymous Unregistered A	Good work Per! Looks like a factory install. Can't wait to see it IRL.

Re: Diffusor #168347 16/09/2006 02:24 16/09/2006 02:24
Joined: Dec 2005 Posts: 2,821 Bath F Fishy_Dave I need some sleep
Fishy_Dave I need some sleep F Joined: Dec 2005 Posts: 2,821 Bath	Quote: Does anyone else read 'Practical Performance Car' they are doing an article on aerodynamics at the moment, basically they said, manufacturers spend millions on developing cars in wind tunnels, all these bolt on body kits, wings, spoilers, etc just ruin the car, make it slower and spoil the handling. Stick with the factory kits, they are designed to work on the car. Yes, I read that, interesting stuff. BTW Did you see the article in the Top Gear section of the magazine? We got our camera mounts mentioned. Good bit of pionerring work Per, it's going to be difficult to tell if it will help though? Are you able to remove it at trackside to do with and without comparisons? Corvette C6 (manual of course)

Re: Diffusor #168348 18/09/2006 13:20 18/09/2006 13:20
A Anonymous Unregistered
Anonymous Unregistered A	Hello Dave! There is some glue involved at one spot, otherwise it wouldn't be too difficult. I did a trackday this weekend, though the i'm afraid the performance of my newly overhauled engine and the new Toyo-tires somehow stole the show! I.e. it's possible it does give me 1 or 2kg's at high speed but I can't really say. But hey it looks cool! So it may intimidate competitors.. I'll try to get the aero-engineer out on the parking this week to get his word on it.

Re: Diffusor #168349 25/09/2006 18:51 25/09/2006 18:51
A Anonymous Unregistered
Anonymous Unregistered A	Had a nice chat Magnus (the aerodynamic engineer here at Volvo Design) last week. He'd never been under a Coupe before and was impressed how well aero-developed it was, compared to other std.cars. Especially at the front/end with it's undertrays. He figured the Coupe essentially already has half a diffusor as it is! He also pinpointed the most obvious obsticle for a nice flow, the rear valance at the end of the bumper, ca 1.5cm. It's there (as on most cars) to rigid the bumber and to hide screws etc. from sight. However, it's possible to cut the mid bit off as I did without much worry, and instead gaining big in flow release. Basically, Magnus told me it's impossible to calculate the amount of downforce I got at which speed, without the aid of a windtunnel.. The point for me is that it works, which he told me it most certainly would do! There a 2 main profits for me here, compared to a boot-wing/spoiler: 1. It produces downforce without adding any drag. 2. It doesn't spoil the looks (as much anyway!). Some new pics from the finished version: http://sfk.ibk.se/depa/showfile.php?carpic_no=1901&type=picture http://sfk.ibk.se/depa/showfile.php?carpic_no=1902&type=picture http://sfk.ibk.se/depa/showfile.php?carpic_no=1903&type=picture http://sfk.ibk.se/depa/showfile.php?carpic_no=1904&type=picture http://sfk.ibk.se/depa/showfile.php?carpic_no=1905&type=picture http://sfk.ibk.se/depa/showfile.php?carpic_no=1906&type=picture http://sfk.ibk.se/depa/showfile.php?carpic_no=1907&type=picture http://sfk.ibk.se/depa/showfile.php?carpic_no=1908&type=picture http://sfk.ibk.se/depa/showfile.php?carpic_no=1909&type=picture

Re: Diffusor #168350 26/09/2006 01:17 26/09/2006 01:17
A Anonymous Unregistered
Anonymous Unregistered A	looks very nice m8 ..... :cool wasnt big surprise that coupe was good developed do the test in the wind tunnel and after that i think you would have many orders

Re: Diffusor #168351 26/09/2006 15:12 26/09/2006 15:12
Joined: Dec 2005 Posts: 3,158 Near Reading JohnS I need some sleep
JohnS I need some sleep Joined: Dec 2005 Posts: 3,158 Near Reading	looks good! Former low boost hero - 616BHP@1.5 bar. 2.4 20VT RIP

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