wstar's Journal

tranceformer · 05-07-2011, 10:35 AM

Quote:

Originally Posted by wstar

That was kind of my gut feeling at the track, too. What's particularly strange with those two runs is that my second run with the better ET had a slightly lower trap speed

. I'm starting to wonder if maybe I'm misjudging where the official end of the 1/4 is and getting off the car too quick at the end heh.

Losing MPH when you lower tire pressure is normal.

How does the car feel towards the end? Did it feel 'slow' at the top of the last gear or two towards the end? What was your oil temps when you made those runs? I usually let my car cool off MINIMUM 30 minutes between each run. Ideally 45 min to 1 hour, or as long as it takes to get the oil temps back down to 150 160 degree range. Any hotter than that and I can feel the car lag at the top of 3rd gear (6MT). Can you tell I'm a track junkie?

IIRC they calculate trap speed by measuring how long it takes to cover a measured distance (which starts from the end of the 1/4 mile mark). Just because of that I stay on it until about 115-120 just in case.

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