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Post by indianajones on Jul 23, 2018 1:03:24 GMT
Just saw this photo, don't know if I've seen it up on here before. Cheers, Andrew
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Post by 1800heap on Jul 23, 2018 7:14:31 GMT
I have never seen that one before Andrew. I wonder why the smoke jumps up above the bonnet rather than hugging it like the screen and roof. Looks odd to me what am I mising?
Nick
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Post by dave1800 on Jul 24, 2018 13:30:42 GMT
I believe you get a similar result with a brick. David I have never seen that one before Andrew. I wonder why the smoke jumps up above the bonnet rather than hugging it like the screen and roof. Looks odd to me what am I mising? Nick
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Post by Penguin45 on Jul 24, 2018 23:12:13 GMT
Oh - not fair. At least Issigonis chipped the edges and the corners off. Chris.
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Post by 1800heap on Jul 25, 2018 1:04:28 GMT
Sadly you are not wrong about the brick! Very large boundary layer cause by flat nose then! Bit late doing it after the fact anyway. I would hardly call it wind either, the blokes hair is very intact!
Im sure if they had put a splitter on it it would have be sorted.😁
Nick
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Post by 1800heap on Jul 25, 2018 1:40:10 GMT
I just had a look at some wind tunnel testing of a 1969 Dodge Charger. Now that really was a brick! No nice stream of smoke on that thing! Mr Issigonis did a better job than Mr Dodge me thinks! Mind you it did have a couple more horses to cope with it.
Nick
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Post by faulks on Jul 25, 2018 9:59:03 GMT
Weirdly, they found something similar when they tested the prototypes of the BMW version of the Mini.... in that changing the shape of the bit where the wing intersects the bonnet reduces the turbulence around an upright windscreen. Looking at that picture, it might be that the ADO 17 team knew that already (or enjoyed a happy coincidence).
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Post by 1800heap on Jul 26, 2018 5:49:17 GMT
Weirdly, they found something similar when they tested the prototypes of the BMW version of the Mini.... in that changing the shape of the bit where the wing intersects the bonnet reduces the turbulence around an upright windscreen. Looking at that picture, it might be that the ADO 17 team knew that already (or enjoyed a happy coincidence). Interesting you mention that. After David said the 1800 was a bit of a brick shape, which it is, I had a look at a few utube videos of wind tunnels from other cars including the dodge. Actually the smoke stays in a nice stream in the picture of the crab which is a good sign! Thinking about it, they wouldnt have bothered wind tunnel testing at all if they hadnt been attempting to get the drag levels down a bit. Who would have thought! Nick
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