No idea. Same goes for 1/8 mile trap speed (594 to 660)
Prob the same guy who decided a random measurement like 1320 feet will be the benchmark measurement of racing lol
Sorry, I was talking pump gas.
And my race gas runs on stage 1 were in +1000 DA. So almost a 2500 swing from pump to race on the same car…
the 1320 isn’t so bad. It’s 1/4 of a standard unit of measure. I’m sure space constraints and the older cars is why it’s 1/4 rather than half or a full mile. It’s just weird that they are so specific about everything into the 1000ths of a sec but then take an average for speed.
Using a predetermined distance and calculation will be more reliable than tracks using a radar gun or something, which would be the only other way to determine actual speed at a specific moment. I guess they could set sensors at like 5ft and get a closer to exact MPH at the finish, but what is the real point if everyone is being timed the same way? That is the beauty of certified tracks that should be somewhat standardized.
http://wediditforlove.com/trapspeeds.html
[quote]Just to clarify the trap setups…the old system utilized a speed trap of 132 ft., positioned 66 ft. before and 66 ft. after the quarter mile finish line. This in theory would give you an accurate speed at the finish line. The new system utilized only the 66 ft. distance before the finish line, so that both the e.t. and speed clocks would be stopped when the car crossed the finish line. In theory this setup would give you the vehicle’s speed at 33 ft. before the finish line. We obviously realized that there would be some mph loss. From a purist’s standpoint, this was a bad deal…but the benefits were undeniable.
[/quote]
The reason it’s only a quarter mile is mostly because of space…but don’t forget relevance and safety. At 1 mile cars are really moving. They’re also tripling the speed limit, so who cares what they’re doing up there.
The reason it’s a trap speed is because it’s easy to calculate trap speed using timing equipment. Time at point A vs time at point B = an easily discernable average speed. Much easier and more reliable than a radar gun of sorts.
It used to be 132 feet…66 feet before and 66 feet after the 1320 foot mark
That was 10% of the 1320 foot quarter mile, with the 1320 mark dead smack in the middle. That is how they used to calculate trap speed.
They changed it to eliminate the 66 feet after the line for safety, so now it’s just the 66 feet feet before up to the finish line.
Makes sense, I knew there was a reason.
This is my hypothesis on the effectiveness of the headers as you move up the ladder:
http://farm3.staticflickr.com/2823/10713913284_c3eceb97a9_o.png
Time will tell.
I’ll reject the null hypothesis and accept the alternative that the headers just don’t work… j/k… kind of…
unfortunately they’re showing to be worse or equal to stock cats on stage 1 cars
Disclaimer: This hypothesis is purely derived on my ownership experience (dyno & 1/4 times readings) and is not to be construed as anything other than pure speculation and pixie dust.
They def improved my stock tune.
I would love to throw my stock cats back on and make some passes, unfortunately I got rid of them.
To add to the, why a 1/4 mile, it may have something to do with moonshine ;D
Also, I honestly don’t think that there will be a huge improvement even with stage 3. It just doesnt make sense…but then again, alot of things do not make sense in my fucked head >:(
Fuck it, lets make a 1 mile drag event ;D
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This would be awesome…
We tested a stock b8 60-130 and a header/Catback/intake b8 a while back both stock tune and both DSG 60-130… Back to back same day. Bone stock was .3 seconds faster
holy shit really? That’s nuts.
both DSG? That’s extra nuts.
Wow… Yeah, that is nuts… I’ll give you credit for still spending the $'s to put them on even after that…
Yup this was really early on, I was still stock in my first… I beat both of them stock as well lol…
Stock car was me actually… Pete, wasn’t the other car a B8.5?
Oh yeah that was you… Good point the other car was a B8.5… So I guess that could also affect the numbers because of gearing…
Still interesting…