Same machine Ax22, different times and temps. Shift times and speeds represent the inherant "human error"

 

rmrmd1956,

thanks for the chart.
Great to see the direct comparisons.

I did a few 60-120 runs in my stage 4 the other day and whilst its not an exact science using a stopwatch i consistantly got 6.8 secs which seems to correspond well with your chart, considering the gear shifts on the stage 4 were 1.5 times the others!

I wasnt sure if 6.8 secs was that quick but a guess it cant be too bad after all!

 

Todd
I am only a Porschefile and this is a hobby so unfortunately I don't have much time to help out, but I will make a few contacts to try to find the right people. One thing that needs some clarification is what is meant by - if it makes sense to your company-, I hope you understand that I cannot put any conditions to a shootout. The guys there like 0-300km/h runs and everything in between, track and other few things. The rules will be the same for everyone. I will keep you posted, it could be a magazine converage as well. You must have good contacts with the new 911 since they covered you and Sharky for some nice pics lately, I am sure they are interested as well. I can get you close to the Porsche professional circle there no problem. Heidleberg is very close to Hockenheim, excellent coincidence.

rmrmd has done this excellent comparo, this is where I extrapolated the 100-200kph manually. The RUF GT2 is Guy's, it has taller tires and 7100 redline, this is why it shifts later. It was running in fact as heavy as the GT750 EVO, there is 160 hp difference between them. The stage 4 is, well, very slow.

Sharky, at mid 130 trap speeds, your weight, and a tip tronic you are running around 600 hp or a bit more, I already mentioned that, this level of course, you can maintain all day on the track, this corroborates what I have been saying earlier, 800-900 FWHP with 8 second run chassis dynos, are more like 600-700 max on the road. Check out the GT750 EVO and compare to the RUF. Your 800+HP, tip and weight should put you in the high 5 seconds or very low 6s.

Of course I could be wrong
Cheers.

 

what's the ax-11 do? i can't find any info.

i do have an AP-22 that i was planning to sell b/c i bought the Autogenuity scanner w/ its Speed Tracer capabilities. i better make sure they both do the same thing.


anyways, welcome to borrow it. once the rain clears, i want to do these calculations too w/ my car.

- chuck

 

It's quite simple, the US DynoJet machines (not even load bearing wtihout special options) read 15-20% higher than dyno machines used throughout the rest of the world.

It's just marketing, don't expect the people who make money from fantasy power figures to give you a level playing field, least of all on this forum!

 

Surely if the gear shift times were the same then there would be little or no difference between the stage 4 and the Ruf.

 

Ax22 is a GPS based data logger, cheaper but similar to what the car mags use.
http://www.race-technology.com/WebPa.../AX22Home.html

 

thanks - i always forget the site & CB Racing seems to no longer carry them.

looks like Ax22 is the better version of my Ap22

- chuck

 

Sorry I did not mean slow as in "slow" but rather compared to its claimed HP, which is similar to the RUF, there is no doubt that those times are excellent by any standards.

The RUF does not have any shifting advantage, they both shift twice during the run, if you fix a bit the first slow shift on the stage 4 (-0.2 s.) you would still be slower by about 1 second vs. the RUF with similar HP to it.

This is not an exact science but much more reliable than any dyno chart for sure.

 

1 second slower isnt so bad since i hear that was on the stock program.....now the race program thats another story

 

I think it's rather foolish to compare a Stage 4 TT vs. Guy's Nardo GT2 thinking that they are anywhere close to equal.

I guarantee you will be sorely disappointed even with your beloved and omnipotent "race" program.

 

Dollar for Dollar, the Stage 4 probably represent good value in relation to the Nardo.

 

 

We'll see what it does... I've no idea really However just as an FYI my car with me in it that day at the track was 3540 (I've got a lot of the stuff back in it again- since the shoot out). Doesn't make a lot of difference but it's not as light as it was... Putting it back to being a full-time street car I guess...

 

Just Mocking,

Some of you guys are sooooo serious.