Clueless

Hacksaw · 10-21-2024, 04:25 PM

MPH in the quarter used to be 66' before and 66' after the 1/4 et stripe. They changed it years ago to only 66' before the stripe.

JP1738 · 10-23-2024, 01:46 PM

Speaking of the 594' mark, does anybody know why it's 66ft? If the only thing it does is serve as a reference time to calculate speed based on the time it takes to traverse that span, why is it 66 feet? Why not 10 or 20? Seems arbitrary to me.

66ft would be 1/10 of an 1/8th mile and 1/20 of a 1/4 mile, but you could easily use any increment you want. I don't know why the people who invented timing systems used that distance and I've never been able to see why in all my research.

Hacksaw · 10-23-2024, 03:10 PM

Ya: So originally it was 132' which of course is 1/10th of the quater mile. Wally set all that up. Easier to calculate in the late 50's ?

10-21-2024, 04:25 PM	#1
Hacksaw Senior Member Join Date: Sep 2016 Posts: 884 Likes: 209 Liked 312 Times in 175 Posts	Re: Clueless MPH in the quarter used to be 66' before and 66' after the 1/4 et stripe. They changed it years ago to only 66' before the stripe.

10-23-2024, 01:46 PM	#2
JP1738 Senior Member Join Date: Jan 2024 Location: Charlotte, NC Posts: 589 Likes: 1,728 Liked 1,236 Times in 350 Posts	Re: Clueless Speaking of the 594' mark, does anybody know why it's 66ft? If the only thing it does is serve as a reference time to calculate speed based on the time it takes to traverse that span, why is it 66 feet? Why not 10 or 20? Seems arbitrary to me. 66ft would be 1/10 of an 1/8th mile and 1/20 of a 1/4 mile, but you could easily use any increment you want. I don't know why the people who invented timing systems used that distance and I've never been able to see why in all my research. __________________ Dawson Pauley #2827 N/SA 1980 Malibu SW 2S 305/180 #2827 S/ST 1978 Mazda RX7 w/ 383 sbc/glide

10-23-2024, 03:10 PM	#3
Hacksaw Senior Member Join Date: Sep 2016 Posts: 884 Likes: 209 Liked 312 Times in 175 Posts	Re: Clueless Ya: So originally it was 132' which of course is 1/10th of the quater mile. Wally set all that up. Easier to calculate in the late 50's ?