Murphs car has plenty more in the tank. His last outing really raised the bar. Anyone worried about the weight should go on a diet. You never know what's in the lane next to you.
BPE2013@hotmail.com
BPE2013@hotmail.com
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SignUp Now!Looked at the XFI log in more detail yesterday. On the faster second pass that I got out of it on, I let off at 6.9 seconds in the run lol. So I coasted for 2.5 seconds to a 9.48. I definitely think it was a 9.2 pass now as I should have been up a tenth and a half at the 1000ft mark. I tweaked my boost controller stage settings a little yesterday and next pass should be a steady 26psi for the whole run, about 1 psi higher than that last pass. Hoping to run this weekend and get that 9.2 or better.
Looking at the launch, I left with 11psi at 4300rpm on the 1.33 60ft. Was higher rpm than I thought but still didn't feel violent at all. Somewhere around 4100 or higher seems to start getting into the sweet spot to launch on my combo. If the track is hooking I may turn it up. Should be no issue for my suspension and drivetrain but I haven't made a lot of passes on the current suspension to see where the limit is.
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.3 or less the car has already been accelerated. I calculated 9.17 the day he was there if the pass was ran out the back with the same power as the eighth.I'm looking at the slip and plugging it into the conversion calculator. His trap speed in the 1/8th in the first run was 114-mph, and his 1000-ft time was 7.82. That was the run where he didn't lift. The second run when he did lift, he trapped 116-mph in the 1/8th, and ran 7.73 at the 1000-ft mark, but essentially lifted before that. I can't see how he lifted before the 1000-ft mark in the second run because he was on target for a 9.15 ET in the 1/4. He lifted, but somehow ran 9.48 at 122-mph. That 20-mph difference only equates to three tenths in 1/4 mile ET...?
If you do a little math, you can estimate how much time you should lose.... The only equation you need to know is distance/speed = time.
Its all about the 1/8th baby!
Your leaving out weight in your calculation, and what I am arguing is easing off the throttle after the 1/8th in comparison with hitting the brake, with the latter being a bit more factual when dropping 20-mph in less than 3 seconds when you already have the momentum of the weight moving with you, and not from a dead stop, which would be more in lieu with such a calculation method you chose to utilize for your estimate...![]()
I can't explain it any more clearly than I already did........
Never really cared. There's no log to look at g force and know exactly what he did. The run was wasted after his foot came off the accelerator. Took eighth mile et and multiplied times 1.56. Gets high 9 teens.Bison, I am not arguing his 1/8th mile, I am arguing if he braked after that 1/8th mile or not. Such a drastic decrease in mph by just coasting after the 1000 foot mark, at the same time running only two tenths slower than his target. You don't feel he braked, and just coasted...?
Never really cared. There's no log to look at g force and know exactly what he did. The run was wasted after his foot came off the accelerator. Took eighth mile et and multiplied times 1.56. Gets high 9 teens.
BPE2013@hotmail.com