| Re: Track results, AFR heads |
Subject: Re: Track results, AFR heads by BeachBum on 2009/9/7 6:02:00 Nice testing Josh ! On this final test, I'd have to analyze it closer to maybe help offer some insight and I don't have the time tonight. But the first thing that jumps out at me is that the AFR's were quicker than the TF's all the way down the track once you got past the 60 ft mark. Here is a summary of acceleration: 60ft to 660 ft mark Trick Flows = 3.362 seconds AFR = 3.307 seconds 660 ft to 1320 ft mark Trick Flows = 4.23 seconds AFR = 4.187 seconds So, you were definitely running faster with the AFR's than the Trick Flows once you got yourself going and in fact, substantially quicker.... for you to run a 60 ft time .13 slower, yet catch and pass the other timeslip is not an easy thing to do. To put the above in perspective, at your speeds, that 1/2 tenth difference the 2nd half of the track is approxmiatley 8-9 ft..... imagine yourself pulling on yourself 8-9 ft over that last 4 seconds of the track and you'll see what was happening. I do not know why with the MPH, as you can see above, the AFR's were pulling hard. But, I've had it happen to me on occasion for a couple of reasons, one of which I was too aggressive with the timing and it would detonate at the top of the track in high gear, this will hurt MPH more than et if its at the top.....I've also seen the same thing with a headwind. But, I dunno, just guessing.... I wouldn't worry about it, go work on those 60's..... thats where 90% of your et improvement lies and I imagine you'll be setting new personal records all winter with the really good air just around the corner. One more thing you want to think about with your et, is that for every tenth you improve on your 60 ft, you will typically receive 1.5-2 tenths total et improvement.... your prior 60 ft was .135 quicker.... imagine if you ran that 1.81 60 ft last night.... would have turned your 12.112 into a 11.8 or 11.9 without a problem. If you have time, post both timeslips with all incrementals including 330 ft and 1000 ft.... we can learn a lot from this. gotta run ! |
