Re: 60' times
 

In this case the 60' time is actually the time to go 60'+the car's wheelbase. You car then back cipher what it would have been in the front wheels tripped the 60' beams.

Re: 60' times
 

Let's say the car 60' on the back wheels @ 1.40...would it mean the car's actual 60' would have been around 1.29 if the front wheels had tripped the beam? Hard to figure a formula to arrive at it.

Re: 60' times
 

This was the absolute fastest pass made by this car, and the fastest 330

1.403
3.74
5.86 115.7
9.29 142.3

This was the fastest 60 foot ever by the same car with the lights tripped by the front tires





1.28


I feel this is pretty accurate, a 67 Chevelle that trips on the rear tires runs about 12 hundreths quicker than the 60 foot clocks indicate.

My 68 Chevelle very consistently goes 1.395 on the rear tires, 3.73 330 although a shorter wheel base than the 67.


http://www.trracecars.com/2foot.jpg

http://www.trracecars.com/3foot.jpg

http://www.trracecars.com/4foot.jpg

Re: 60' times
 

I'll be damned...my guesswork/math was pretty darn close lol. :p

Re: 60' times
 

Could stage w/ back tires once LOL
Mike Taylor 3601

Re: 60' times
 

Our stockers running mid 10s typically had a 1.48 60ft with rear tires and it was 1.33-4 with the front tires. However, the faster a car is the less et difference will be seen. So, if it's a low 9 second car it's probably around .12. A mid low to high 10 second would probably be .14-.16. However, if it is tripping the beams with the middle of the car, you can have inconsistent numbers. I have seen runs .05-.06 slower in 60ft with same 330 on my high 9 second Firebird.

Re: 60' times
 

Subtract .10 - .145 depending on weight from the back wheel 60 foot and you will be close.

Re: 60' times
 

Country puppy has it about right. It's a calculated guess, look at 330 also.

Re: 60' times
 

The 60' beams are 8" off the ground, right? You would have to be almost straight up at 60' to catch it with the rear tires, and not the rocker panel. How high the front determines where along the rocker panel the beam catch it. Normally I'm 1.27X to 1.28X, straight up I'm 1.4X.

Re: 60' times
 

1.40-1.28 =.12