RE: Volkswagen ID.R attacks the Nordschleife!

[JD]

Max_Torque said:

er, a "lap time" is the time for the entire lap, not "how fast you drive down the straight! One of the reasons VW spent half a million on simulation for this attempt was to optimise the car to get the lowest lap time.

Yes that’s exactly what I mean, they are limited by the car they had available, rather than making something that was exactly for the job in hand.

[nickfrog]

Lowtimer said:

aarondbs said:

Just one lap before running out of charge??

It would be SENSATIONALLY stupid, when going for a single lap record, to carry any more battery than needed for the one lap at absolutely flat out performance.

Besides, even a Nissan GTR won't complete 3 hot laps in a row before running out of fuel.

[sparta6]

E65Ross said:

sparta6 said:

E65Ross said:

Well for starters it's a race car, so, erm, yes...? Just like it would in any other race car.

Fairly certain a Le Mans GT racer would make it.

Not that it would be the most comfortable trip

My point was that it's not road legal. Your second point brings it about the car being optimised for its own purpose, the ID.R was built for Pikes Peak, so it's not going to have batteries to last 100 mile flat-out stints. If it was racing for 100 mile stints like they do at Le Mans, it'd have more batteries.

For sure.
More batteries would adversely affect its weight and balance, which may or may not be proportional to its performance curve.

[J4CKO]

nickfrog said:

Lowtimer said:

aarondbs said:

Just one lap before running out of charge??

It would be SENSATIONALLY stupid, when going for a single lap record, to carry any more battery than needed for the one lap at absolutely flat out performance.

Besides, even a Nissan GTR won't complete 3 hot laps in a row before running out of fuel.

Must be hard on the driver as well keeping maximum attack pace in something that is pretty physical, but suppose F1 drivers manage.

[dvs_dave]

JD said:

Max_Torque said:

er, a "lap time" is the time for the entire lap, not "how fast you drive down the straight! One of the reasons VW spent half a million on simulation for this attempt was to optimise the car to get the lowest lap time.

Yes that’s exactly what I mean, they are limited by the car they had available, rather than making something that was exactly for the job in hand.

There are quite a few of the faster sections of the track where the car was clearly hobbled by a relatively low top speed. It was trundling along around the 250 km/h mark for extended periods on quite a few occasions which was costing it time.

The motor hitting it’s max rpm seemed to be the culprit. It felt as though it needed to “change up” as it had plenty of power to pull a higher gear ratio.

With a higher rpm capable motor, or a 2-speed transmission, it would have easily been under the 6 minute mark.

Still very impressive and I’m guessing these are areas that are already being developed, and this is far from the last we’ll see of the ID.R at the N/ring. I think it’s almost certain that the 919’s outright record will be taken by an electric car within 10 years.

[E65Ross]

dvs_dave said:

JD said:

Max_Torque said:

er, a "lap time" is the time for the entire lap, not "how fast you drive down the straight! One of the reasons VW spent half a million on simulation for this attempt was to optimise the car to get the lowest lap time.

Yes that’s exactly what I mean, they are limited by the car they had available, rather than making something that was exactly for the job in hand.

There are quite a few of the faster sections of the track where the car was clearly hobbled by a relatively low top speed. It was trundling along around the 250 km/h mark for extended periods on quite a few occasions which was costing it time.

The motor hitting it’s max rpm seemed to be the culprit. It felt as though it needed to “change up” as it had plenty of power to pull a higher gear ratio.

With a higher rpm capable motor, or a 2-speed transmission, it would have easily been under the 6 minute mark.

Still very impressive and I’m guessing these are areas that are already being developed, and this is far from the last we’ll see of the ID.R at the N/ring. I think it’s almost certain that the 919’s outright record will be taken by an electric car within 10 years.

I'm not convinced the fact it was stuck at about 250mk/h at the end was because of the motor hitting its max rpm, the car was doing a fair chunk quicker than that earlier in the lap.

[RumbleOfThunder]

Exactly. The batteries simply wouldn't have the juice to sustain a faster lap.

[dvs_dave]

I’m not just talking about the final straight. Plenty of areas early on such as schwedenkreuz, flugplatz, kesselchen, to name a few areas where IC track specials are easily cracking 300+ km/h in the same areas. , The ID.R was bumped up against its 250ish km/h top speed for extended periods, loosing seconds in all these areas.

In other words, this is of course an incredibly fast time and amazing achievement, but despite this there still looks to have been a lot left on the table due to the car’s limited top speed.

If they can crack this top speed issue, then an all out record is probably not all that far away.

[E65Ross]

dvs_dave said:

I’m not just talking about the final straight. Plenty of areas early on such as schwedenkreuz, flugplatz, kesselchen, to name a few areas where IC track specials are easily cracking 300+ km/h in the same areas. , The ID.R was bumped up against its 250ish km/h top speed for extended periods, loosing seconds in all these areas.

In other words, this is of course an incredibly fast time and amazing achievement, but despite this there still looks to have been a lot left on the table due to the car’s limited top speed.

If they can crack this top speed issue, then an all out record is probably not all that far away.

The issue is..... Higher top speed = more batteries, and therefore more weight, leading to lower cornering speeds and longer braking distances etc. In my opinion it's a world off the 919 pace, and a bit of a higher top speed still won't get it close.

[dvs_dave]

E65Ross said:

The issue is..... Higher top speed = more batteries, and therefore more weight, leading to lower cornering speeds and longer braking distances etc. In my opinion it's a world off the 919 pace, and a bit of a higher top speed still won't get it close.

Yes of course it’s all a compromise, but I’d like to hear from the engineers about the full rationale of the 250ish km/h top speed (which is slow) for a track that’s known to be a high speed monster. Would a 2 speed trans and active aero/DRS (does it have this?) have solved the top speed/drag/energy consumption issue? A 680hp car is easily capable of well over a 300 km/h top speed afterall.

[FourWheelDrift]

It's beaten Nick Heidfeld's 20 year old Goodwood Hillclimb record today - https://www.youtube.com/watch?v=FkLMzJN6vMA

[anonymous-user]

FourWheelDrift said:

It's beaten Nick Heidfeld's 20 year old Goodwood Hillclimb record today - https://www.youtube.com/watch?v=FkLMzJN6vMA

Im not surprised the record has stood for so long. The last time I went hardly anyone was really trying. Really pretty dull event, unlike Revival.