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Jan 18, 2007 23:32:40 GMT
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 SPLIT RIMS ARE FOR WINNERS |
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Jan 18, 2007 23:41:23 GMT
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they do look good, VERY easy to make as well, but if you want them functioanl there is a very strict set of mathmatical rules to follw, as being even a tiny bit out makes em useless.
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Volvo back as my main squeeze, more boost and some interior goodies on the way.
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Seth
South East
MorrisOxford TriumphMirald HillmanMinx BorgwardIsabellaCombi
Posts: 15,517
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Jan 18, 2007 23:59:59 GMT
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Oooo, yes, I'll have a few of them please ;D  |
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Follow your dreams or you might as well be a vegetable. |
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Is it wrong that one of my earliest memories is reading a late-eighties/early nineties copy of CCC that had an article on vents and how effective they were...And that I've always remembered that a proper NACA duct is the best vent available (on a flow vs drag comparison)...?
I even remember the diagram, giving angles and radii that the duct should be....
*n
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Top grammar tips!
Bought = purchased. Brought = relocated
Lose = misplace/opposite of win. Loose = your mum
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st182
Part of things
'yota man
Posts: 585
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your not wrong  functional indeed- they draw air into whatever they're connected to cant remember the exact reason why (I THINK air decompresses and therefore speeds up creating a ram effect) cos i aint been to college for a long time  , but i learnt they worked there so i'll believe them ;D sexy too, form and function in one great package ;D If your worried about the shapes i think places like demon tweeks do pre-formed ones which you can "let in" wherever you like. If you're made of money, buy an F40 and cut out the bits you want, and fibreglass them to your *insert retro chariot here*  |
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Dan  '93 JZA80 '79 TA40 '99 SCP10 |
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NACA ductsRobinxr4i
@robinxr4i
Club Retro Rides Member 143
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I know it look cack cause I have not sprayed it (and I have lost faith with it so I am going to break it) but heres my NACA duct on my Volvo 480 turbo......   Mounted above my (mega heat soaking) filter cone!  Yes they do look slightly better on a F40 though  |
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Sierra - here we go again! He has an illness, it's not his fault.
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Jan 19, 2007 11:02:03 GMT
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If you're made of money, buy an F40 and cut out the bits you want, and fibreglass them to your *insert retro chariot here* Or take a look at the bonnet of a T72 (late '80s type) Bluebird. They have what's basically a big NACA duct pressed into them. Recall them being mentioned in the mag's in the early '80s, probably an essential part of getting the IMSA look on your Princess |
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Jan 19, 2007 11:08:01 GMT
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Brian Burrows modelled the ones on his Squareback on the ones from his GT40 Replica...
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NACA ductsDeleted
@Deleted
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Jan 19, 2007 12:02:00 GMT
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your not wrong functional indeed- they draw air into whatever they're connected to cant remember the exact reason why (I THINK air decompresses and therefore speeds up creating a ram effect) cos I aint been to college for a long time , but I learnt they worked there so i'll believe them ;D Not quite, an external duct makes better ram pressure than a flush duct but makes more drag. If you just want a bit of intake but don't want to naff up the aerodynamics then a flush duct like this NACA duct works better. Check oot the description here: en.wikipedia.org/wiki/NACA_duct |
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Last Edit: Jan 19, 2007 12:03:04 GMT by Deleted
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Anglia68
Posted a lot
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Posts: 2,049
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Jan 19, 2007 15:39:02 GMT
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Not forgetting...............  |
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Anglia68
Posted a lot
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Jan 19, 2007 15:43:24 GMT
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......................and one in the roof.  |
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Last Edit: Jan 19, 2007 15:44:00 GMT by Anglia68
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Jan 19, 2007 15:45:54 GMT
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Cool. Twin NACA ducts for the RV8 then when I change it's plenum ;D
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Jan 19, 2007 16:00:59 GMT
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I run em on my imp look  and  That one feeds the turbo through the inline air filter theres anotherone for the other side to feed the intercooler |
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Jan 19, 2007 17:34:28 GMT
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i remember 924 turbos have got one of them
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SPLIT RIMS ARE FOR WINNERS |
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, but i learnt they worked there so i'll believe them ;D
