Want to increase your bhp/ton
Discussion
leosayer said:
I have always thought that a clean car must be more aerodynamic than a dirty one 
Probably not by much though
Not necessarily. Professional swimmers were using all over body suits that had little ridges on them to disrupt the water flow and apparently make them faster. Subsitute ridges for grime and squashed flies and the same effect could be achieved with your car.
Although not through water obviously.
alexkp said:Yup ... an golf balls are covered in dimples to create little pockets of turbulence that help move the big patch of turbulence further round the back of the ball ... almost like covering the ball in little ball bearings ... result is to reduce parasitic drag
I have always thought that a clean car must be more aerodynamic than a dirty one
Probably not by much though
Not necessarily. Professional swimmers were using all over body suits that had little ridges on them to disrupt the water flow and apparently make them faster. Subsitute ridges for grime and squashed flies and the same effect could be achieved with your car.
Although not through water obviously.
ATG said:
I have always thought that a clean car must be more aerodynamic than a dirty one
Probably not by much though
Not necessarily. Professional swimmers were using all over body suits that had little ridges on them to disrupt the water flow and apparently make them faster. Subsitute ridges for grime and squashed flies and the same effect could be achieved with your car.
Although not through water obviously.
F1 cars are polished to perfection before races.
Pretty sure if you copy what they do in motorsports you can't go far wrong, thats where the money is.
Dave
Mr Whippy said:
I have always thought that a clean car must be more aerodynamic than a dirty one
Probably not by much though
Not necessarily. Professional swimmers were using all over body suits that had little ridges on them to disrupt the water flow and apparently make them faster. Subsitute ridges for grime and squashed flies and the same effect could be achieved with your car.
Although not through water obviously.
F1 cars are polished to perfection before races.
Pretty sure if you copy what they do in motorsports you can't go far wrong, thats where the money is.
Dave
But do they fold the back seats down?
To maximise acceleration and Vmax he should take a dump (-500g) and good a piss (-420g) before driving, giving a weight saving of nearly 1kg, which is eqivalent to folding down the bigger of the split folding rear seats and leaving the ash tray partially open.
He could also try filling his tyres with helium instead of air, but that would be a little ridiculous.
>> Edited by juniord on Wednesday 24th May 10:54
He could also try filling his tyres with helium instead of air, but that would be a little ridiculous.
>> Edited by juniord on Wednesday 24th May 10:54
Interesting. I have now pushed my driver's seat forward and lie across the back and operate the pedals using my hands to reduce weight.
Interestingly I took my Camaro Z28 to Avon Park once and removed the rear seat, spare tyre and jack and guess what, it was exactly the same.
The badge thing is interesting. Frequently the difference between models is slight to say the least but changing the identity is just a no-no. I modified my Z28 Camaro so it was faster and better than the SS but would no more put an SS badge on it than stab my mother. Some Vette owners get torn apart on American forums for sticking false Z06 badges on their cars whilst of course defending their right to the freedom to do what they like to their car.
Interestingly I took my Camaro Z28 to Avon Park once and removed the rear seat, spare tyre and jack and guess what, it was exactly the same.
The badge thing is interesting. Frequently the difference between models is slight to say the least but changing the identity is just a no-no. I modified my Z28 Camaro so it was faster and better than the SS but would no more put an SS badge on it than stab my mother. Some Vette owners get torn apart on American forums for sticking false Z06 badges on their cars whilst of course defending their right to the freedom to do what they like to their car.
Right then. I've just cleaned the MR2, took off the gearnob, removed the wipers as it's stopped raining, emptied the air out of the tyres (to save weight), left the missus at home, had a shave, skipped breakfast, took the key off the keyring, put 75p's worth of Optimax in, etc...
I'm now off to test the 0-60 time. I'll be back in about 2.4 seconds to post the result.
I'm now off to test the 0-60 time. I'll be back in about 2.4 seconds to post the result.
Is anyone else thinking this new physics could be used to make a fortune. I've already started a new diet book:
1. Lie down youll weigh less and you're fat so youll like that ..... (i can see this being a top seller)
Oh and according to him would he not be better to deflate his tyres less weight per cm2 = less weight overall and all that
1. Lie down youll weigh less and you're fat so youll like that ..... (i can see this being a top seller)
Oh and according to him would he not be better to deflate his tyres less weight per cm2 = less weight overall and all that
In actual fact this fella has the right idea,it's just the implimentation he has wrong?I have been stripping out my BMW V8 e36 coupe and have found it very surprising just how noticeable the weight saving is.The only trouble is, where to stop? (I hasten to add this is a track car and only road legal for ease of transportation at the moment).
I think a bit of wee just slipped out 
I've just gone out to try this on my xantia, only my seats dont fold flat
they stick up at about a 15 deg angle?! will this be sufficient, or am I going to suffer reduced benefits as a result? I've also cleaned out the ashtray - the 3 ciggy buts and 2 broken matchsticks are firmly in the bin.
To add to the BHP I've also strapped a dustbin where the exhaust was and added large pieces of unsightly plastic to the bodywork with copious quantities of No Nails.
I've just gone out to try this on my xantia, only my seats dont fold flat
they stick up at about a 15 deg angle?! will this be sufficient, or am I going to suffer reduced benefits as a result? I've also cleaned out the ashtray - the 3 ciggy buts and 2 broken matchsticks are firmly in the bin. To add to the BHP I've also strapped a dustbin where the exhaust was and added large pieces of unsightly plastic to the bodywork with copious quantities of No Nails.
"but the jesticular manners of your replies"
jesticular
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jesticular
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ATG said:NOPE - can't remember why, but the dimples on golf balls are to make it fly straighter, not to reduce the resistance.
Yup ... an golf balls are covered in dimples to create little pockets of turbulence that help move the big patch of turbulence further round the back of the ball ... almost like covering the ball in little ball bearings ... result is to reduce parasitic drag
Clean, shiny things have lower drag than dirty things. Apparently in WW2, Douglas Bader would always insist that hisspitfire was polished before each mission he went out on, as he reckoned it gave him a 20knot advantage over the hun.
Oli.
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