Official 2019 Monaco Grand Prix Thread ***SPOILERS***

Official 2019 Monaco Grand Prix Thread ***SPOILERS***

Author
Discussion

FourWheelDrift

88,554 posts

285 months

Tuesday 21st May 2019
quotequote all
DuncB7 said:
Deesee said:
Rear wheel steering, the one thing they have and no one else does
2019 Formula One Technical Regulations, Article 10.4.1:

"Any steering system which permits the re?alignment of more than two wheels is not permitted"
They might have developed a version of McLaren's 3rd pedal brake steering that has no input from the drive this time - https://www.motorsportmagazine.com/archive/article...

Would that be legal?

TheDeuce

21,734 posts

67 months

Tuesday 21st May 2019
quotequote all
FourWheelDrift said:
They might have developed a version of McLaren's 3rd pedal brake steering that has no input from the drive this time - https://www.motorsportmagazine.com/archive/article...

Would that be legal?
No, that would be allow for an adjustment of alignment. Effectively steering, albeit indirectly. Whatever they're doing that's different, if anything at all, will be a side product of the suspension doing it's normal job. I'm sure that any driver or computer/automated control would be spotted in an instant and become a complaint from the other teams.

sparta6

3,699 posts

101 months

Tuesday 21st May 2019
quotequote all
TheDeuce said:
No, that would be allow for an adjustment of alignment. Effectively steering, albeit indirectly. Whatever they're doing that's different, if anything at all, will be a side product of the suspension doing it's normal job. I'm sure that any driver or computer/automated control would be spotted in an instant and become a complaint from the other teams.
Even a complaint from other teams does not always translate into a ban and/or penalty.

This 1.6 hybrid era is all about who can throw down the biggest budget and convince the FIA that it's good for their green credentials.

The days of a small team coming up with something novel and exciting, eg Brawn, and winning, are no longer possible.

TheDeuce

21,734 posts

67 months

Tuesday 21st May 2019
quotequote all
sparta6 said:
TheDeuce said:
No, that would be allow for an adjustment of alignment. Effectively steering, albeit indirectly. Whatever they're doing that's different, if anything at all, will be a side product of the suspension doing it's normal job. I'm sure that any driver or computer/automated control would be spotted in an instant and become a complaint from the other teams.
Even a complaint from other teams does not always translate into a ban and/or penalty.

This 1.6 hybrid era is all about who can throw down the biggest budget and convince the FIA that it's good for their green credentials.

The days of a small team coming up with something novel and exciting, eg Brawn, and winning, are no longer possible.
Either way, they aren't going to be doing anything with any level of dynamic control. It's just setup. All cars are setup for each race, some are setup better and some are designed to offer better setup potential. Maybe there is a new trick or way of thinking they have uncovered - that's the extent of it when it comes to the rear wheels of an F1 car.

To be realistic, looking at how strong their overall offering is, it's very likely they're not doing anything special - just getting an extra 1-2% out of everything. That's why budget wins. That final extra push costs the most.

noell35

3,171 posts

149 months

Tuesday 21st May 2019
quotequote all
Could they harvest more mgu-k energy from the inside rear wheel using GPS positioning?

Deesee

8,460 posts

84 months

Tuesday 21st May 2019
quotequote all
noell35 said:
Could they harvest more mgu-k energy from the inside rear wheel using GPS positioning?
Yes the can transfer K to H (and vice versa unlimited) and would not need GPS, if... they can then you would need to separate mgu k left/right..

Here is a flow chart (it’s from last yr so the fuel flows will be out), but the principle is the same.


thegreenhell

15,404 posts

220 months

Tuesday 21st May 2019
quotequote all
Deesee said:
Yes the can transfer K to H (and vice versa unlimited) and would not need GPS, if... they can then you would need to separate mgu k left/right..

Here is a flow chart (it’s from last yr so the fuel flows will be out), but the principle is the same.

The 'K' comes from the engine crankshaft. It would need to be connected to the output of the differential to make that work, and as a by-product would also be able.to send torque to individual wheels, which I think is banned.

Deesee

8,460 posts

84 months

Tuesday 21st May 2019
quotequote all
TheDeuce said:
sparta6 said:
TheDeuce said:
No, that would be allow for an adjustment of alignment. Effectively steering, albeit indirectly. Whatever they're doing that's different, if anything at all, will be a side product of the suspension doing it's normal job. I'm sure that any driver or computer/automated control would be spotted in an instant and become a complaint from the other teams.
Even a complaint from other teams does not always translate into a ban and/or penalty.

This 1.6 hybrid era is all about who can throw down the biggest budget and convince the FIA that it's good for their green credentials.

The days of a small team coming up with something novel and exciting, eg Brawn, and winning, are no longer possible.
Either way, they aren't going to be doing anything with any level of dynamic control. It's just setup. All cars are setup for each race, some are setup better and some are designed to offer better setup potential. Maybe there is a new trick or way of thinking they have uncovered - that's the extent of it when it comes to the rear wheels of an F1 car.

To be realistic, looking at how strong their overall offering is, it's very likely they're not doing anything special - just getting an extra 1-2% out of everything. That's why budget wins. That final extra push costs the most.
The chatter from the experts is such that they (Merc) have uncovered/evolved something... I’ve called it rear wheel steering because that’s the simple term..

This is a war of marginal gains, and to find a 10th a lap is something, to find 2 tenths a corner is mind blowing..

BTW, look out for the force India from the German GP... wink

Deesee

8,460 posts

84 months

Tuesday 21st May 2019
quotequote all
thegreenhell said:
Deesee said:
Yes the can transfer K to H (and vice versa unlimited) and would not need GPS, if... they can then you would need to separate mgu k left/right..

Here is a flow chart (it’s from last yr so the fuel flows will be out), but the principle is the same.

The 'K' comes from the engine crankshaft. It would need to be connected to the output of the differential to make that work, and as a by-product would also be able.to send torque to individual wheels, which I think is banned.
Harvesting is different to deployment.. the question was from noel35 was harvesting..

But I understand the deployment (which I mentioned earlier in the thread)..

Edit Noell35..


thegreenhell

15,404 posts

220 months

Tuesday 21st May 2019
quotequote all
Deesee said:
Harvesting is different to deployment.. the question was from noel35 was harvesting..

But I understand the deployment (which I mentioned earlier in the thread)..

Edit Noell35..
The point is that whether it's harvesting or deploying, it's the same unit and it's connected to the engine crankshaft, which doesn't see individual wheels.

Deesee

8,460 posts

84 months

Tuesday 21st May 2019
quotequote all
thegreenhell said:
Deesee said:
Harvesting is different to deployment.. the question was from noel35 was harvesting..

But I understand the deployment (which I mentioned earlier in the thread)..

Edit Noell35..
The point is that whether it's harvesting or deploying, it's the same unit and it's connected to the engine crankshaft, which doesn't see individual wheels.
No it’s not/ but almost .. harvesting is massively different to deployment, see the flow chart above..the energy can be used in different ways, deployed back to the k into the h or Stored in the ES.

& you don’t have to have a single ‘solid’ rear axle (which you would assume would be standard with a mgu k) for harvesting, (The individual axles R & L could harvest separately to the energy store or redeploy as unlimited energy k to h / h to k).




TheDeuce

21,734 posts

67 months

Tuesday 21st May 2019
quotequote all
Deesee said:
No it’s not/ but almost .. harvesting is massively different to deployment, see the flow chart above..the energy can be used in different ways, deployed back to the k into the h or Stored in the ES.

& you don’t have to have a single ‘solid’ rear axle (which you would assume would be standard with a mgu k) for harvesting, (The individual axles R & L could harvest separately to the energy store or redeploy as unlimited energy k to h / h to k).
So.. increased resistance on the inner wheels harvesting could pull the car tighter in to the corner? Essentially an e-diff.

That's allowed!? That's just an e-diff but via harvesting as opposed to electronic brake feathering.

Deesee

8,460 posts

84 months

Tuesday 21st May 2019
quotequote all
TheDeuce said:
Deesee said:
No it’s not/ but almost .. harvesting is massively different to deployment, see the flow chart above..the energy can be used in different ways, deployed back to the k into the h or Stored in the ES.

& you don’t have to have a single ‘solid’ rear axle (which you would assume would be standard with a mgu k) for harvesting, (The individual axles R & L could harvest separately to the energy store or redeploy as unlimited energy k to h / h to k).
So.. increased resistance on the inner wheels harvesting could pull the car tighter in to the corner? Essentially an e-diff.

That's allowed!? That's just an e-diff but via harvesting as opposed to electronic brake feathering.
Maybe and from Canada I’d insist on a duel/twin gearbox for the harvesting..

(Hang on I’ll edit this)

Some clever idiot not in the conversation or adds not to our threads (apart to piss on high) will say this was done in the 50/60/70/80 or even BC..

Edited by Deesee on Tuesday 21st May 21:53

thegreenhell

15,404 posts

220 months

Tuesday 21st May 2019
quotequote all
Deesee said:
No it’s not/ but almost .. harvesting is massively different to deployment, see the flow chart above..the energy can be used in different ways, deployed back to the k into the h or Stored in the ES.

& you don’t have to have a single ‘solid’ rear axle (which you would assume would be standard with a mgu k) for harvesting, (The individual axles R & L could harvest separately to the energy store or redeploy as unlimited energy k to h / h to k).
As you like flow charts so much, please use it to explain how you control the torque (either from harvesting or deployment) to an individual wheel. The only point in the entire system where torque splits to individual wheels is at the output of the differential, to which neither the MGU-K nor any other PU component has any direct connection other than through a single transmission shaft. It simply is not possible in any way that you describe.


TheDeuce

21,734 posts

67 months

Tuesday 21st May 2019
quotequote all
thegreenhell said:
As you like flow charts so much, please use it to explain how you control the torque (either from harvesting or deployment) to an individual wheel. The only point in the entire system where torque splits to individual wheels is at the output of the differential, to which neither the MGU-K nor any other PU component has any direct connection other than through a single transmission shaft. It simply is not possible in any way that you describe.

This is my issue with the theory. The harvesting doesn't happen at the wheel, but through the box surely? So no control over either rear wheel specifically.

It could only make sense if under extreme deceleration, the harvesting could have the effect of braking the inner wheel to a greater extent than the pad breaking slows the outer wheel. I doubt the harvesting deceleration is anything like what those brembos are capable of so I doubt it.

Deesee, need to clear the fog and explain this theory better!

stevesingo

4,858 posts

223 months

Tuesday 21st May 2019
quotequote all
The diagram explains it all. The MGU-K is connected to the engine and ancillaries only. It is not connected directly to the wheels. If it were, the diagram would have an arrow from MGU-K directly to the wheels/diff/driveshaft.

Deesee

8,460 posts

84 months

Tuesday 21st May 2019
quotequote all
Individual ‘wheels’ can collect kinetic energy and place that (via the flow/diagram/chart) into the h, or the ES, and then much more under breaking.

Now if this was a clock wise track with 11 turns right and say 4 left, you would have more revolutions on the rear left than the rear right, and you would budget for the kinetic return to mgu h or Es appropriately.

TheDeuce

21,734 posts

67 months

Tuesday 21st May 2019
quotequote all
Deesee said:
Individual ‘wheels’ can collect kinetic energy and place that (via the flow/diagram/chart) into the h, or the ES, and then much more under breaking.

Now if this was a clock wise track with 11 turns right and say 4 left, you would have more revolutions on the rear left than the rear right, and you would budget for the kinetic return to mgu h or Es appropriately.
That wouldn't effect turn in though. I understand the under braked wheel feeds more energy back.. but by definition it's under braked for that to happen, so no turn in.

The only way to pull the car towards an apex beyond some toe in suspension geometry, is to under rotate it. The centralised harvesting can't do that per wheel, so it could only otherwise be done by wheel specific braking. Which would be a driver aid..

Unless you do believe that harvesting force can exceed braking in slower corners.

Deesee

8,460 posts

84 months

Wednesday 22nd May 2019
quotequote all
TheDeuce said:
Deesee said:
Individual ‘wheels’ can collect kinetic energy and place that (via the flow/diagram/chart) into the h, or the ES, and then much more under breaking.

Now if this was a clock wise track with 11 turns right and say 4 left, you would have more revolutions on the rear left than the rear right, and you would budget for the kinetic return to mgu h or Es appropriately.
That wouldn't effect turn in though. I understand the under braked wheel feeds more energy back.. but by definition it's under braked for that to happen, so no turn in.

The only way to pull the car towards an apex beyond some toe in suspension geometry, is to under rotate it. The centralised harvesting can't do that per wheel, so it could only otherwise be done by wheel specific braking. Which would be a driver aid..

Unless you do believe that harvesting force can exceed braking in slower corners.
No it won’t, thought we were talking ERS now, back to ‘RWS’..hehe let’s see the Merc advantage this weekend in the bends, must be something right ????

Individual brake bias could be used both ways (Manuel of course) for braking and harvesting.

IF you watch the Merc in FP1/2 it’s a mess understeer snaps to oversteer and vice versa, in quali/race trim its a beast, they understand the tyre window (1 of 10 teams)? They have a significant operating advantage..



PhillipM

6,524 posts

190 months

Wednesday 22nd May 2019
quotequote all
To be honest that's most of it, they can keep the tyres hot even in the low speed stuff, although having shedloads of downforce helps there.