MF-Brain

iTrader: (1)

sky pilot, i should just ban you and force you on the site with pimpley faced kids...

skypilot

Point taken Mr Brain,

Have taken self off to corner and given said self a very stern talking too.

my behaviour should improve from now on

tbro

Hey mate,
Not running turbo but with the old car, a NA clubman I found braking into Hungry at Lakeside a "little bit nervous" to put it mildly.For our brothers in Canada and the US, Lakeside raceway has killed more competitors than ALL the other tracks combined, and is the 2nd highest average speed track in Australia behind Mt Panarama, Bathurst.
I considered all of the above but after speaking to Murray C he suggested different pads (QFM) and that with the car being so light that changing Master cylinder diameters or boosters would probably be unnecessary. And guess what, he was right!!! The softer pads with slotted rotors made heel and toeing easier to modulate. I don't left foot brake but I think you may find it isn't an issue.

Terry

skypilot

Thanks Terry

Would love to catch up, currently in WA for a funeral, my poor old gran she made it to 102 so not a bad innings in anyones language.

Will be back in a fortnight or so. Mr C is a good man, not looking forward to giving him my left kidney for 4 shock absorbers

Justin

curly

Come to think of it, back when I had my racer reroute, I would left foot brake and floor it in boost to warm up the engine on call days. 2nd gear at 45mph was full (10psi) boost and the brakes worked fine to hold it at a constant speed. Definitely was boosted (the brakes)

skypilot

sorry guys here is the

WORLDS BIGGEST ADMISSION FOR BEING A ********.

In my original post I never mentioned anti-lag. thats why some of you didnt understand. What I should have mentioned is that I will be running antilag. therefore theoretically the manifold never generates vacuum therefore you have no bake boost therefore no brakes.; DUH

in any case the turbo mX5 here in oz runs an electric vacuum pump. I think I will just put a pedal box in and be done with it.

Justin

sixshooter

I was going to suggest a vacuum pump. Or the elimination of the booster entirely (like the old days) to eliminate variation in pedal feel.

bigx5murf

Hmm, I left foot brake, but not for performance reasons. It's really just because I was lazy when driving my auto daily. I've left foot braked a few times on my msm, but only to bring a bit of oversteer back into line. I've never sustained braking while on the gas, but maybe I'll try it later. I should watch the video first and see whats the point of doing this first huh?

skypilot

There are heaps of reasons as to why people do it.

In the early days of turbos the main reason was to keep boost up for corner exit. in those days lag was really bad and the cars were hard to drive as the power came on very abruptly.

Alot of drivers now use it to control the car mid corner. I used to rally a front wheel drive Huyndai and you would use left foot braking to bring the nose of the car round whilst still keeping the boot in.

Although its slow you can see me using that technique VERY POORLY

at 5 sec and 49 secs in this video (yes its poor quality)


same place different vid


I guess the main reason I use it is that I am a bit of a coward in the forest. So rather than coming on and off the throttle and hovering your foot over the brake pedal you can just leave you left foot over the brake to use it if required. A classic time for this might be as you come over a blind crest and you cant decide which way the road goes, so instead of buttoning off you just leave your left foot ready for that big OH F_CK moment.

All the above is just written by a slow c grade rally driver so take it all with a grain of salt.

Justin

Doppelgänger

Maybe a dumb question, but how much vac. you suppose can be found on the pre-turbo inlet pipe? Maybe enough to work the brakes when a WOT/antilag?