Help me read these time slips (Part II)

[propellerhead]

I went to Kennedale last night, just for the fun of it. I ended up with a new best 1/8 mile ET and 60 ft ET. My previous ones were 9.3s and 2.2s. The two personal record breaking runs are as follows:

8:42 PM
60': 1.876
1/8: 9.277 @ 77.73 MPH

8:45 PM
60': 2.155
1/8: 9.157 @ 78.22 MPH

The part I don't understand is how the first run can have the better 60' ET but have the lesser 1/8th. And how can the second run have the better 1/8th but the lesser 60'. Same car. Same driver. Same lane. 3 minutes apart.

http://img131.exs.cx/img131/7585/besttimes3pr.jpg (http://www.imageshack.us)

[sprayed 347]

its all about acceleration. you accelerated slower off the line for the 2.155 60' but the rate of acceleration rose for the entire distance after the 60' trap.

[SSMAN]

You still on street tires? 1.8 is damn good if you are. I take it that you have a 5 speed. It has to be the driver. Unless you had something go wrong with your car.

Did you hit the rev limiter? Shift at different RPM's?


I think their damn time machine screwed up if none of the above happened. :rolleyes:

[propellerhead]

sprayed 347: Right, it is about acceleration. What I don't understand is why the acceleration would change that much. It's the same car. Same engine. Same transmission. Same tires. Same weight (roughly).

Traction? I was consistently hitting 2.2s for my 60' ETs at Kennedale during the Spring Cruise. And 2.4s in San Antonio a couple of weeks ago. Weather? It was probably 10-15* cooler last night than that one Sunday afternoon. If it was all about traction, then something was causing me to hook better last night.

SSMAN: I have the factory 17x8 Goodyear street tires with my 4 speed auto. I had Traction Control off and O/D locked out. The EEC scheduled the shifting for me at the predefined RPM. I was also thinking the clock screwed up, but my other 60' ETs that night were like 2.1, 2.0x and 1.9x. I was having such a good night that I probably did 10-12 runs!

[Nate]

did you stage with your back tires on the 1.8 60 ft?

[propellerhead]

did you stage with your back tires on the 1.8 60 ft?
Hahaha! I swapped engines with this 03/04 Cobra.

[GR8WHITE]

Your MPH is wrong on your 60 ft...That mph is the 330' mph, not the 60 foot mph...59 mph @ the 60' mark would be shaggin out pretty good!

[propellerhead]

Your MPH is wrong on your 60 ft...That mph is the 330' mph, not the 60 foot mph...59 mph @ the 60' mark would be shaggin out pretty good!
Oh yea. It shows I'm new to this. Thanks.