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modelling
tom_loughlin - 12/11/04 at 12:55 PM

heres my 1st attempt at 3d surface modelling a locost, thought id share it with u guys.
next jobs are to model the small stuff (lights/wishbones/seats etc..) then im going to export it to CFX5.7 to perform virtual aerodynamic tests on it.
the aim is to reduce the Cd hopefully to ~0.3. to achieve this, substantial bodywork mods will be needed, but hopefully wont neew to change the layout of the chassis.
any coments/suggestions welcome
cheers,
tom Rescued attachment caterham.JPG
Rescued attachment caterham.JPG


Peteff - 12/11/04 at 01:14 PM

The front to back proportions look wrong and the nosecone is small and pointed for a Locost. I don't think you'd get an engine and radiator in there.


Volvorsport - 12/11/04 at 01:14 PM

0.3 is unachievable with an open wheeled car .


MikeR - 12/11/04 at 01:26 PM

Caterham have made improvements with their latest car. Inboard suspension and a modified cycle wing have helped.

Also no matter how much you want to reduce drag, i'd put a proper roll bar on the car. Low drag and dead is not much use!


Hellfire - 12/11/04 at 03:53 PM

Yeah proportions are way wrong m8...

not bad for first attempt though - don't give up your day job though!!!


andyps - 12/11/04 at 08:40 PM

I would think that to achieve a cd of .3 you would need to enclose the wheels pretty much completely, and then do lots of other work too - very few production solutions get this low.


flyingkiwi - 13/11/04 at 05:31 PM

Didn't cateringham nearly bankrupt themself's trying to improve the 7 design?

Just remember something on the telly about it.....


12a RX-7 - 13/11/04 at 06:47 PM

best solution I would have thought is the fury/ginetta type shape


Mark Allanson - 13/11/04 at 09:07 PM

If its any help, the Cd of a std caterham with screen is 0.65


andyps - 13/11/04 at 09:58 PM

quote:
Originally posted by Mark Allanson
If its any help, the Cd of a std caterham with screen is 0.65


Thanks Mark - I knew it was rediculously high, but couldn't remember the figure.


ayoungman - 17/11/04 at 05:34 PM

I'm in the process of modelling an entire car using a CAd package called ProDesktop. I've done the chassis and am now assembling the wishbones and diff. Only taken me 34 hours so far. Looks go when you rotate it on screen though !


skinny - 18/11/04 at 11:40 AM

quote:
Originally posted by flyingkiwi
Didn't cateringham nearly bankrupt themself's trying to improve the 7 design?

Just remember something on the telly about it.....


i think the consultancy company they used went bankrupt during development. but now they have used some of that project like the front wings, lip on the nose, thru-flow bonnet vents from nose and inboard suspension, aerodynamic wishbones. i am not sure if they still have a venturi tho.

as far as i know, they are planning to sell this car (but i'm not sure...)