Aerodynamics of a bug

[beetle1303]

yeah thats what i meant
very nice bug ( you actualy partly realise my ideas )
Im going to build two different kits for by 1303, one like a 935 and one like a gt1 with the fender extending all the way back ( both in 3d models first and then from alu)

Chris

[judgie]

this is the sort of thing i had in mind

will just have to try and do it all before the season starts.
cheers rob

[beetle1303]

Try and do something to the place around the transmission. Its a big gap that engulfs much air...In one of my designs im using a fake bottom and very square wheel wells for the back since rear wheels dont turn and their movement is minimal in a yaw manner.

Chris

[judgie]

Originally Posted by beetle1303

Try and do something to the place around the transmission. Its a big gap that engulfs much air...In one of my designs im using a fake bottom and very square wheel wells for the back since rear wheels dont turn and their movement is minimal in a yaw manner.

Chris

yep going for a compleate flat floor pan gentaly rising to the rear leading into a defusser.
cheers rob

[beetle1303]

In a few hours im flying back home so i could get some measurements. I believe that with "gently" you mean from the rear of the floor pan towards the back... otherwise it will be too low -the front clearence-(if it goes from the front to the rear directly)

Also one of my other considerations is: Would the side skirts be more effective if they have a small lip at a 90 degree angle towards the cetreline of the car? this would improve stractural rigidity and make it a bit more difficult for the side skirt to break if it touches the ground in a small radius u turn with high altitude difference...just a thought

Another thing for you jugie and every other racing: in the case that the regulations permit it... Have you thought of putting ribs on the top-outer end of your wings? (like the K3 935) they are supposed to improve the flow over the end of the wing. (like the small lip that goes on top of the rear window, but on the longitudinal plane) it could improve the airflow to the rear fenders...and any air intake around there

Chris

[judgie]

floor will rise from just behind the front axle line to just behind the rear axle line,or as far back as i can before curveing up to the defusser.rise only needs to be a degree or so.
the wing vanes that you refur to i'm trying to confirm if i can run them or not.regs are prety free as long as the work is below the axle line or does not alter the side profile of the car.
cheers rob

[beetle1303]

in order to get the best of the ground effects i would go with parallel bottom instead of inclined. See both pics to understand what im saying. Also i would go for the same depth for the venturi and the difuser (side view). From what i understood the rules doesnt give you enough space to play with ground effects... so i dont know if the venturi would have enough meaning...

Chris