just like a lotus elise?
Turbo Mini Forums

ive been thinking alot about the rear valance at the moment. i understand it can cause quite a lot of wind resistance, now ive seen people which remove the valance( which i dont like) and ive seen people cut holes and triangles in (quite common lol) so i was thinking cut a big hole init and mesh it (copying TVRdave). but ive had anther idea underneath a lotus elise is aluminium paneled off compleately. so does any one have any opinions on this or have tried it obviously itwould have to have a cut out for the exhaust. i was thinking of doing the front subby and rear.

no longer a series, but still 1.3 turbo.

id strongly consider it, if i had a subframe id panel out my back one

its done to smooth the airflow underneath the car. It gives a slight amount of downforce to the back of the car if its done right. And the proximity to the ground gives a much higher downforce due to the ground effect. That is considering that the diffuser underneath has an increase cross section to allow the negative pressure area to be generated.

I was looking into it and the effect it would have would be minimal, but every little helps!!!!

a few years ago i saw a panel at smb composites that completely blanked off the underneath of the subframe and came up at the back (ala elise), not sure if he ever put it into production though?

"Turbo's make torque, and torque makes fun"

"did you know you can toast potato waffles?"

Flat flooring is a great idea, it will make the car more stalbe at speed, and reduce the drag produced.

Raise the back up and create a diffuser FTW!

http://www.mulsannescorner.com/diffuser.htm

i think its a great idea too, but be warey as for some motorsprt disaplines there are regulations that prohibit the use of aerodynamic aids, i know rallying (at international levels anyway) dont like them.

"Turbo's make torque, and torque makes fun"

"did you know you can toast potato waffles?"

Well the flatter the underneath the more aerodynamic. On our hillclimber we have a sheet off aluminium that goes from the heel board to the valance. Without the sheet there it was about 3mph slower on flatout 4 gear sprints. More noticeable though is that it vibrates at speed much less.

We have never tried it at the front though.

http://www.twin-turbo.co.uk
http://www.hillclimbandsprint.co.uk/default.asp

A man without a project is like a like a woman without a shopping list.

carl, you meen a fenced rear diffuser, somehting i had on my car nearly 10 years ago, and still have the moulds,i just haven't had time to make a new longer one. but wil some time

WWW.FORCE-RACING.CO.UK PLEASE CLICK HERE

Think John Haston has one on his car too?

my car is runs as per Will's - it also keeps the rear end more stable as well as running more top end speed.

If you want downforce off the diffuser it needs to be very close to the road!

If Carling made Mini engines
it would probably be like this one!

i dont think ill need the difusser but will panel off the rear and see what happens.

cheers people

no longer a series, but still 1.3 turbo.

Carl, saw the diffuser on your site.

How much do they retail at?

I was thinking. If you make a plate from the heelboard and to the bottom of the valance. you'll hav lift, won't you? Isn't the valance lower to the cround than the heelboard, or are they the same?

Well it doesn't go down. It is at worst flat, but I think the rear valance is slightly higher than the heel board.

http://www.twin-turbo.co.uk
http://www.hillclimbandsprint.co.uk/default.asp

A man without a project is like a like a woman without a shopping list.

Good, That was what I was concerned about. How thick is your plate?

1mm aluminum, bolted streight onto the heel board, subframe and then some long bolts onto the valance.

Wil's internet is broken at the moment, but when fixed I will get him to take some pictures.

http://www.twin-turbo.co.uk
http://www.hillclimbandsprint.co.uk/default.asp

A man without a project is like a like a woman without a shopping list.

Great, thanks! :)