Italian GP 2009 - Monza

[nipo]

The KERS allowance resets at the start/finish line so they can use the allowance at the end of the warm up lap coming out of parabolica and than have a whole 6.6 for the quali lap itself.

[-X

This too, bonkers for me!

Let me explain pls: They use KERS after Parabolica for 6 seconds - ok! KERS resets at start/finish line - ok! As per quotes, they use it again after start/finish line for 6 seconds - ok! Then how on Earth they can again use it after Parabolica (dude, it remains the VERY same lap here)???


I am outta explanations if this still is confusing

Is it really so hard to get??? He didn't say to use KERS on Parabolica a second time, dude. But you know what? Using it on the warm up lap means that you cross the start/finish line with greater speed, gaining an advantage even tho you are not using on the hot lap.

The real question is whether the car can be geared to sustain such top speeds - of course you can gear it that way but would it make sense for the rest of the lap?

[Fil]

Why would you use KERS on a straight? you're pretty much sitting at 18k rpm limit anyway, it can't push you above that..

Primary advantage is out of corners as soon as traction is not limited.
common sense would say out of the first chicane, maybe a squirt out of Lesmos and then what's left out of Ascari towards Parabolica.

[Shaddock]

Why would you use KERS on a straight? you're pretty much sitting at 18k rpm limit anyway, it can't push you above that..

Primary advantage is out of corners as soon as traction is not limited.
common sense would say out of the first chicane, maybe a squirt out of Lesmos and then what's left out of Ascari towards Parabolica.

They use it to increase their acceleration not top speed, if a cars top speed is say 205mph and you can reach that 1/2 way down the straight, you have an advantage over cars that don't hit top speed until 3/4 of the way down the straight.

Alternatively, use KERS on a straight where the cars don’t reach terminal velocity and you will have a speed advantage by the time you reach the braking zone.

[siskue2005]

The KERS allowance resets at the start/finish line so they can use the allowance at the end of the warm up lap coming out of parabolica and than have a whole 6.6 for the quali lap itself.

[-X

This too, bonkers for me!

Let me explain pls: They use KERS after Parabolica for 6 seconds - ok! KERS resets at start/finish line - ok! As per quotes, they use it again after start/finish line for 6 seconds - ok! Then how on Earth they can again use it after Parabolica (dude, it remains the VERY same lap here)???


I am outta explanations if this still is confusing

we are talkin about Qualifying
in race what u said is right

but in quly .....

1.) you go out of the pit lane on to your warm up lap
2.) on that lap you can recharge your Kers (In Mclaren you can fill up the Kers for 2 laps in few hard braking corners...is should be same with Ferrari)
3.) So you come to parabolica on ur warmup lap...out of the corner you press Kers for 6 sec
4.) the when you cross the S/F the Kers activates again and you can press it for 6secs again
5.) that makes it total 12 odd secs total in the home straight alone

This can only be done in Quly

[Fil]

wow, is this really that hard to grasp? technically yes, you can use it out of parabolica, then again after the start line, but why would you!

as Shaddock confirmed just before, KERS is used to improve acceleration. So common sense would suggest to maximise this advantage by using it out of slow corners, not in the middle of main straights.

[siskue2005]

wow, is this really that hard to grasp? technically yes, you can use it out of parabolica, then again after the start line, but why would you!

as Shaddock confirmed just before, KERS is used to improve acceleration. So common sense would suggest to maximise this advantage by using it out of slow corners, not in the middle of main straights.

we saw Kimi press the Kers 2 times on the camel straight and he shot past 2 cars by then.....so its perfectly fine to use it on the straight and get a boost......only thing u need is a car with gears a bit longer to use that.
its not that its only useful out of slow/medium speed corners.

this is what Jenson Button had to say on Kers advantage at Monza....it was his idea i wrote it down here, not mine

"...although if you've got KERS it will be better for you because you can give it a double boost along the home straight. You've got six seconds out of Parabolica, and six seconds after the start-finish line, so they are going to be pulling half a second, six tenths on us on a qualifying lap."

http://www.autosport.com/news/report.php/id/78225

[axle]

**I get the quali idea**

Personally though I'd use it for 6secs off the parabolica and then for 3secs away from the first chicane and then the rest on the exit onto the back straight...

[timbo]

3.) So you come to parabolica on ur warmup lap...out of the corner you press Kers for 6 sec
4.) the when you cross the S/F the Kers activates again and you can press it for 6secs again
5.) that makes it total 12 odd secs total in the home straight alone

This is not true. KERS is limited in capacity, so you won't be able to use it before you charge it again. Don't be fooled by TV graphics, it's just a timer.
You could use KERS after first chikane.

[axle]

You raise a good point - I wonder how many Kj the McLaren/Fezza unit stores...as isn't the limitation on use not storage?

[timbo]

You raise a good point - I wonder how many Kj the McLaren/Fezza unit stores...as isn't the limitation on use not storage?

Both use and storage. More precisely power (60kW) and storage (400kJ) that gives that 6.66(6) seconds.

[chasefreak]

the storage is for 13.2 secs
so when the 6.6 sec gets over and a new lap starts the other 6.6secs start while the 1st 6.6 sec dat got used get charged... i remember this in a online article when merc was talking abt their kers

so yes for quali both ferrari and merc will use it to their full benefit...

mclren have said that their next major upgrade will be singapore so i don't think monza will be a good hunting ground for them.. but then u never know.... they could rush the upgrades for one car liek they r doing this season.... so LH may get some thing going ( this is all assumption )

[timbo]

the storage is for 13.2 secs
so when the 6.6 sec gets over and a new lap starts the other 6.6secs start while the 1st 6.6 sec dat got used get charged... i remember this in a online article when merc was talking abt their kers

You've probably misread it. And besides, how do you imagine using one 6.6 seconds while charging another?

[walter]

chasefreak wrote:
the storage is for 13.2 secs
so when the 6.6 sec gets over and a new lap starts the other 6.6secs start while the 1st 6.6 sec dat got used get charged... i remember this in a online article when merc was talking abt their kers

You've probably misread it. And besides, how do you imagine using one 6.6 seconds while charging another?

if there's 13.2 seconds of charge in the battery then it does not need to charge while using the first 6.6 seconds... however that means that if you use it in that fashion at the start/finish line, some of the laps will be significantly slower than others.

[Saribro]

... More precisely ... storage (400kJ) that gives that 6.66(6) seconds.

There is no such limitation.

The maximum power, in or out, of any KERS must not exceed 60kW.
Energy released from the KERS may not exceed 400kJ in any one lap.

There is no mention at all about an energy storage limit for KERS, only the above "amount released per lap".

[timbo]

... More precisely ... storage (400kJ) that gives that 6.66(6) seconds.

There is no such limitation.

The maximum power, in or out, of any KERS must not exceed 60kW.
Energy released from the KERS may not exceed 400kJ in any one lap.

There is no mention at all about an energy storage limit for KERS, only the above "amount released per lap".

Well yes, you're correct, I was wrong.
However, using all 6.6 seconds just before S/F and right after would leave you with no boost to help accelerating from Rettifilo.
My guess - they would use most KERS out of Rettifilo and everything left from Parabolica.