A very welcome refreshment of the lfs package. The track looks and feels more alive than the others.

Great work!

Got a single hd 5850. At 5760x1080, LFS maxed out, got anything between 100 and 200 fps depending on the situation, so no need getting GTX 570 or dual 460s or anything that expensive. Only a 32 F1 car grid gets me into the 50s.

Too old to try that. Plus I wouldn't dare being smart in a language that is not my own. I'll guide you step by step through my thought process:

a) take stock car
b) take car manufacurer's declared power from a brochure (it is a flywheel horsepower figure)
c) dyno test it using the same dyno as one used in the example graph above
d) compare the manufacturer figure with the figure obtained during a dyno run
e) based on the difference in the two figures draw conclusions as to the accuracy of using a dyno to indicate car's drivetrain losses

In one sentence:

If a dyno produces flywheel hp figures that almost exactly match manufaturer's figures, then it must be pretty accurate at measuring the drivetrain losses.


Same place, same dyno:


Uploaded with ImageShack.us

Manufacturer data: 305 hp, 440 Nm

Keep typing...

Quote from RasmusL :

Also, holy shit. Over 33% loss on your Evo?

Not my Evo, only giving an example.

Quote from S14 DRIFT :

A little off topic but nevertheless, an Evo X with 380bhp but only 255 of those reach the wheels? Unless I've mis-read, that's appaling..

That's 4WD for you. Those kind of losses are pretty standard. Fortunately one does not drive with a dyno graph

Quote from JeffR :

The Corvette Z06 loses about 13%, from a bit over 505 hp to a bit over 440 rwhp. Not sure if that is unusually good for a car.

I'd say it's a tad optimistic. Unless someone is getting extra freebie horses from Chevy.

Over here US horses have a reputation for being a little weaker than EU ones (same cars have better dyno results in US than in EU)



@Tristancliffe: should I start producing dyno graphs which "guesstimate" stock (as in not tuned) cars' drivetrain losses so precisely that they match manufacturer declared power outputs +-5hp?



Dyno testing is not perfect, but when done properly is much better for estimating drivetrain losses than having a guess in the modest 5-30% range.

All the dyno tests I did with any of my cars included drivetrain losses on the results sheet. So whoever did your test should have acces to specific figures for your vehicle.

Green line on the graph below:



Uploaded with ImageShack.us


Configuring LFS cars to my road cars' spec always returned 1/4 mile results surprisingly close to those achieved in real life.

Last edited by greenhorn, Tue, 2 Nov 2010 11:15. Reason : graph added

Didn't know the race date was changed. I'm pretty busy recently, so won't be able to make it. Have a good race guys!

Last edited by greenhorn, Fri, 17 Apr 2009 11:45.

- LFSName: greenhorn
- First and Last Name: Maciej Spychal
- Car Number (between 1 and 109): 13
- Country (Using ISO 3166-1 alpha-3 standard) POL

No replays, no caps, the impression I got while watching live - Hamilton was very reluctant to give the position back and in my opinion did not do it properly.

The replays and caps that people posted only confirmed my initial reaction.

Overall, a technically good decision, but very bad for the sport itself.

Unexpectedly Kimi did not keep his cool under pressure.

As usual Lewis was too eager.

To those who claim that FIA favours Ferrari, think about the time and consequences of the 3.0 -> 2.4 engine reduction after 2004.

Quote from Electric Eye :

Heya,

I think I might get S1 license sometime soon, so just out of curiosity checked what tracks and cars you'd exactly get for 12 quid.

6 new additional cars and 2 new tracks! While S2 would give you an additional 11 cars and 3 tracks

6 and 11, that's quite a poor balance?

In s2 you'd pay around 90p for a single car and in S1 it would be whopping 2 pounds each!

Just saying that the balance is a bit off

Now lets hear something from angry s2ers!

If you can afford a computer to play the demo stop bothering us with value for money issues. It's 24 pounds man, change by any West European standards. DO IT!

Thanks for hosting a great race deko!
It was me that caused all the mayhem during the start. Initially I did not know what happened because I was not expecting to spin out in 3rd on R2 in almost a straight line (I thought someone had hit me in the first place). Once again apologies to all the guys affected.

It was my first long distance race so adrenaline was pumping I'm happy I managed to reach the finish line. Looking forward to any future events and hoping not to cause any more trouble for our brilliant race control

Cheers,
Maciej

Well deserved win for Kubica and BMW. Consistency will be the key to success in the rest of the season.

Hamilton's driving and behaviour does no deserve any comments.

A very good season so far, let's hope it stays that way until Brazil.

Can't wait for Clarkson to comment on all that on Sunday