omega0684
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| posted on 17/4/09 at 05:39 PM |
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Diffuser Question
how far should a diffuser stick out the back of the car?
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tomgregory2000
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| posted on 17/4/09 at 05:44 PM |
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Far enough but not too far 
Im on the beer already
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Johneturbo
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| posted on 17/4/09 at 05:45 PM |
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far enough to impeed the car behind
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blakep82
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| posted on 17/4/09 at 05:47 PM |
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how long is a piece of string? 
________________________
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westf27
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| posted on 17/4/09 at 05:57 PM |
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There's that word again
555
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brianthemagical
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| posted on 17/4/09 at 05:58 PM |
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Ideally it needs to be as long as possible, useually determined by regualtions. Other than that, not too far so as to make it look funny or to move
the centre of pressure ntoo far back.
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Hector.Brocklebank
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| posted on 17/4/09 at 06:04 PM |
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might be a plan to email brawn racing as they seem to know quite well
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omega0684
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| posted on 17/4/09 at 06:12 PM |
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i was thinking more like 2-3"
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speedyxjs
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| posted on 17/4/09 at 06:13 PM |
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quote:
Originally posted by westf27
There's that word again
What, depends?
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blakep82
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| posted on 17/4/09 at 06:42 PM |
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2-3" will be fine
i think anything up to 6" should look alright, above 6" and it'll just look silly
[Edited on 17/4/09 by blakep82]
________________________
IVA manual link http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1081997083
don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
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tomgregory2000
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| posted on 17/4/09 at 06:50 PM |
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Wouldnt an effective front splitter be a better use of time?
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zilspeed
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| posted on 17/4/09 at 07:12 PM |
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Aerodynamics is not something we should even attempt to dabble with, because, let's face it, who's got a clue ?
Here's the one that convinces me not to dabble.
F1 rear wings, dictated entirely by the regs regarding chord size, height, width, distance from the back of the car. Designed to give some downforce,
but not too much. Designed to let the car behind follow and have a chance of overtaking.
Top level hillclimb car. Fit as big a wing as you want, fit it where you want and use as much power as you can afford to pull that big ol' wing
along.
Do I think I know why the hillclimb car's wing is bigger ?
Absolutely.
Do I actually know why they're different ?
Not really.
Diffusers ?
On sevens and stuff like that ?
Aye, right.
Now don't get me wrong, I have friends with diffusers fitted to their cars, but without a sound knowledge of why you're doing it, all
you're doing is giving money to the man that sells the carbon, or God forbid, the sheet ally...
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zilspeed
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| posted on 17/4/09 at 07:20 PM |
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If I came across as negative, I apologise.
If it's something you want to do, don't ever let me or anyone else tell you not to.
I won't be doing it myself, but hey, we're all different 
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tomgregory2000
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| posted on 17/4/09 at 07:57 PM |
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that one on the turbo blade is rather tasty.
Im going to make front and rear and whiskers for mine, i like um
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blakep82
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| posted on 17/4/09 at 08:27 PM |
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i want one to fill in this big space in the back panel on mine
but its not going to work unless the whole underside is panelled in really...
________________________
IVA manual link http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1081997083
don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
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brianthemagical
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| posted on 17/4/09 at 09:19 PM |
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I'm pretty sure the one on that turbo blade is one of the ones that does cock all.
They aren't too hard to design, even the current F1 diffusers are pretty much flat or gently curving for the most part. It just needs a smooth
trasition into it, to have around 7-12 degrees of divergence with the ground, be sealed at the sides, have as smooth a flow into as possible, and
that's about it.
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