The carbon fibre time attack/superlap MX5 NB twins blog

Mr nanotech · Postby **Mr nanotech** » Fri Oct 19, 2012 11:47 pm

Group buy for that bonnet with just the single vent up front? I know of at least 3 people who would be keen.

lightyear · Postby **lightyear** » Wed Oct 24, 2012 7:51 pm

Look how twisted the NB8B was. The chassis was well beyond repair. When i put it on axle stands, i had to lift the left rear one 3 clicks higher than the others.

Postby **beavis** » Thu Oct 25, 2012 9:49 am

That'll buff out.

Postby **beavis** » Thu Nov 01, 2012 10:42 pm

stb · Postby **stb** » Fri Nov 02, 2012 8:16 pm

Well done, it looks great and looks to work great too.

lightyear · Postby **lightyear** » Tue Nov 13, 2012 3:04 pm

Went to p.i to test the fastback and aero bits. I had too much traffic, and then there was a strong headwind. So probably dould have done better than the 1:54.9 i got. Race chrono has a best of low 1:54's as the optimum time. Damn traffic... But it was fun dicing with the fast cars.

Here is a pic showing how close it is to the ground. I had to trim the skirts in the morning.

Postby **Okibi** » Tue Nov 13, 2012 9:01 pm

Strong winds would have been a good test of the aero and how well the windows seal.

lightyear · Postby **lightyear** » Tue Nov 13, 2012 9:16 pm

The strong wind was only half the problem. The wing slides back and forward in an arc on the stands. So i put it all the way back. But it ends up with a lot more angle. And the back adjusters bottom out before i could get the angle back down to what i wanted. So the last 2 sessions had way too much angle on the wing. Last session was a drive thru the pits and back onto the track, no time to adjust the wing.

bruce · Postby **bruce** » Wed Nov 14, 2012 10:19 am

You need to create an in-cabin adjustable rear wing. I wonder why someone hasn't done this before?

Suspense · Postby **Suspense** » Wed Nov 14, 2012 10:42 am

They have, in the form of the DRS in F1!

bruce · Postby **bruce** » Wed Nov 14, 2012 10:45 am

Silly old me. I was going to question if F1 had done it!
You could do it with little electric motors, or just a bunch of cables and an adjuster (both a lot of work).

lightyear · Postby **lightyear** » Wed Nov 14, 2012 11:11 am

I have thought about using boot or door solenoids. Or even the headlight motors. It can be done, but requires some time to make it all work. And i like doing things that dont take too much time for this car.

hks_kansei · Postby **hks_kansei** » Wed Nov 14, 2012 11:15 am

Would there really be that much benefit to active aero on the car?

I'm just thinking that most sedan based racecars don't have active aero, it's only really F1 and maybe a few others, and they're developed to the point where they can afford to invest that amount of money into dropping 0.01secs off laptimes.