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 9258 Posts Member #: 123 Post Whore Betwix Harrogate and York |
4th Oct, 2009 at 09:10:11am
Just read the first part of the Racecar Engineering article on Mini aerodynamics. Quite interesting.
Edited by wil_h on 4th Oct, 2009. Fastest 998 mini in the world? 13.05 1/4 mile 106mph
On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination, talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry. |
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 966 Posts Member #: 358 Post Whore Snetterton, Norfolk |
4th Oct, 2009 at 09:14:37am
I've not had my copy in the post yet. Is it any good? |
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 667 Posts Member #: 5232 Post Whore basingstoke |
4th Oct, 2009 at 09:37:18am
my bonnet isn't raised for cooling (although thats what I tell people), it's raised because it's a cheap bonnet that's fractionally too long, and hits the scuttle if I drop it down!
Mr. Prawn, the friendly Crustacean- slowly making steps towards forced induction. |
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 6274 Posts Member #: 509 Post Whore Isle of Man |
4th Oct, 2009 at 10:40:49am
years back at uni i ran a few cfd sims on a (very) rough profile of a mini
"Turbo's make torque, and torque makes fun"
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 8604 Posts Member #: 573 Formerly Axel Podland |
4th Oct, 2009 at 10:44:40am
That's how I always understood it. Prop up the rear of the bonnet to let air in from the high pressure area at the base of the screen.
Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
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9258 Posts Member #: 123 Post Whore Betwix Harrogate and York |
4th Oct, 2009 at 01:19:05pm
Yes that seems to be the conclusion of air flow.
Fastest 998 mini in the world? 13.05 1/4 mile 106mph
On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination, talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry. |
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Forum Mod  5933 Posts Member #: 784 9 times Avon Park Class C winner Milton Keynes |
4th Oct, 2009 at 01:23:33pm
On 4th Oct, 2009 wil_h said:
The aditional problem with the bonnet, if I read it right is that it causes lift at the front. Is that closed or raised? I seriously doubt it! |
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 6752 Posts Member #: 828 Post Whore uranus |
4th Oct, 2009 at 01:31:19pm
http://www.turbominis.co.uk/forums/index.php?p=vt&tid=8799 Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM |
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Forum Mod 5933 Posts Member #: 784 9 times Avon Park Class C winner Milton Keynes |
4th Oct, 2009 at 01:37:46pm
Reverse venturi as its called has been used for years in drag racing and on production cars. AM Vantage takes its air supply for the superchargers from the scuttle for example, I have shaped my bonnet so its slightly raised in the middle but flush at the ends to get this venturi effect for induction as mine is n/a I seriously doubt it! |
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 453 Posts Member #: 6449 Senior Member Brisbane, Australia |
4th Oct, 2009 at 02:36:09pm
Im planning on lifting the rear edge and running a top mount intercooler and ducting the high pressure through the ic.
In boost we trust |
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 3329 Posts Member #: 184 Senior Member Melton Mowbray, Pie Country |
4th Oct, 2009 at 04:39:49pm
On 4th Oct, 2009 best_stig said:
Ive not thought too much about it, how much time is spent over 70 miles an hour in hillclimbs anyway? Enough to make it worthwhile. http://www.twin-turbo.co.uk
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9258 Posts Member #: 123 Post Whore Betwix Harrogate and York |
4th Oct, 2009 at 06:04:37pm
On 4th Oct, 2009 paul wiginton said:
On 4th Oct, 2009 wil_h said:
The aditional problem with the bonnet, if I read it right is that it causes lift at the front. Is that closed or raised? Fastest 998 mini in the world? 13.05 1/4 mile 106mph
On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination, talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry. |
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628 Posts Member #: 1064 Formally Whyte_ben Horndean, Hampshire |
4th Oct, 2009 at 07:43:08pm
Has anyone ever looked into the aerodynamic differences between saloon and clubman fronts?
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6274 Posts Member #: 509 Post Whore Isle of Man |
4th Oct, 2009 at 07:43:52pm
well i guess an era vent is a good compomise, it will allow airflow in, without fluffing up the aerodynamics too much? "Turbo's make torque, and torque makes fun"
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 4890 Posts Member #: 1775 Post Whore Chester |
4th Oct, 2009 at 08:08:55pm
a couple of door locks and one active bonnet. I run a supercharger and I don't care the TB is on the wrong side.
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 7765 Posts Member #: 74 I pick holes in everything.. Chief ancient post excavator |
5th Oct, 2009 at 08:09:36am
On 4th Oct, 2009 Ben. said:
Has anyone ever looked into the aerodynamic differences between saloon and clubman fronts? Would be interesting to see. The clubman is obviously worse, but I haven't seen any numbers on how much. On 13th Jul, 2012 Ben H said:
Mine gets in the way a bit, but only when it is up. If it is down it does not cause a problem. |
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3329 Posts Member #: 184 Senior Member Melton Mowbray, Pie Country |
5th Oct, 2009 at 08:50:50am
On 5th Oct, 2009 Vegard said:
On 4th Oct, 2009 Ben. said:
Has anyone ever looked into the aerodynamic differences between saloon and clubman fronts? Would be interesting to see. The clubman is obviously worse, but I haven't seen any numbers on how much. I would be interested to see the difference, not sure it is obviously worse though. I bet the frontal area is the same the only difference being the bonet has a curve, but it turns through 90deg so quickly, is it that much better. I also read that raised wings above the bonet are not good either so there the clubman is better. So all in all I bet the difference is minimal, maybe even in the clubman's favour. http://www.twin-turbo.co.uk
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Forum Mod 5933 Posts Member #: 784 9 times Avon Park Class C winner Milton Keynes |
5th Oct, 2009 at 09:34:11am
Ive often wondered about the drag effect of the air getting trapped under the front wings and whether or not its better to make a vent to allow it to escape. I know Carl has vents in Dons A panels.
I seriously doubt it! |
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6274 Posts Member #: 509 Post Whore Isle of Man |
14th Oct, 2009 at 10:04:01pm
so, was feeb's i/c location (number plate) a good choice or what? "Turbo's make torque, and torque makes fun"
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 3756 Posts Member #: 1709 I like granny porn. LONDONSHIRE |
15th Oct, 2009 at 11:32:46am
On 5th Oct, 2009 paul wiginton said:
Theres the old thoughts about pickups going faster with no tailgate, but its been proven now that it isnt true as air builds up in the bed, with the tailgate closed, and creates a bubble for flowing air to bounce off and makes it more streamlined. I wonder if the same is so with the Mini front wings without a vent. Paul im sure that my truck is quicker with the tail gate off,i doubt its a weight issue as its only a single skin, when it comes off its noticable, maybe this effect is different per pickup? i run a cover on the daily and when going faster the air pushes down at the rear like a spoiler... On 2nd Oct, 2009 Vegard said:
On 1st Oct, 2009 Jimster said:
I bet my first wank came quicker than your first mini turbo These new modern turbos with their quick spool up time, would make the competition harder. On 15th Aug, 2011 robert said:
phew!!! thank you brett for smashing in my back doors .( not something i imagined writing... EVER) |
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9258 Posts Member #: 123 Post Whore Betwix Harrogate and York |
15th Oct, 2009 at 11:59:55am
my old X1/9 would go 5mph slower if you put the lights up. But this is more obvious as it's at the front.
Fastest 998 mini in the world? 13.05 1/4 mile 106mph
On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination, talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry. |
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3756 Posts Member #: 1709 I like granny porn. LONDONSHIRE |
15th Oct, 2009 at 12:37:06pm
On 15th Oct, 2009 wil_h said:
my old X1/9 would go 5mph slower if you put the lights up. But this is more obvious as it's at the front. you had one of those?? lol, they are cool,shame about the rust they came with too... On 2nd Oct, 2009 Vegard said:
On 1st Oct, 2009 Jimster said:
I bet my first wank came quicker than your first mini turbo These new modern turbos with their quick spool up time, would make the competition harder. On 15th Aug, 2011 robert said:
phew!!! thank you brett for smashing in my back doors .( not something i imagined writing... EVER) |
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3329 Posts Member #: 184 Senior Member Melton Mowbray, Pie Country |
15th Oct, 2009 at 12:44:58pm
I think you will find that was my old X1/9. http://www.twin-turbo.co.uk
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3756 Posts Member #: 1709 I like granny porn. LONDONSHIRE |
15th Oct, 2009 at 01:16:47pm
On 15th Oct, 2009 Ben H said:
I think you will find that was my old X1/9. lol, well YOU now have my pity... On 2nd Oct, 2009 Vegard said:
On 1st Oct, 2009 Jimster said:
I bet my first wank came quicker than your first mini turbo These new modern turbos with their quick spool up time, would make the competition harder. On 15th Aug, 2011 robert said:
phew!!! thank you brett for smashing in my back doors .( not something i imagined writing... EVER) |
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 1424 Posts Member #: 2810 Formally spanner181187 Dublin, Ireland |
15th Oct, 2009 at 01:22:02pm
This hasn't been published yet, has it? If not, I'll subscribe again On 12th Nov, 2009 Paul S said:
I think Gary OS has taken over my role as the forum smart arse  On 30th Apr, 2010 Rod S said:
Gary's description is best |
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