different ts ratio between 1/8and 1/4 mile

gnicholson · 10-30-2018, 10:56 AM

i will look over a stretch of good quarter runs and see what the eighth did like you suggested. my point was i have to take out enough numbers to reduce my et approx 4 tenths in the eighth that it changes the ratio but i really need more runs. i doubt we do the 8th index again but you never know. im just curious about this basically

Lenny5160 · 10-30-2018, 03:52 PM

I see your point also, that if you change your stop duration by a bunch, the ratio could change along with it. Your stop duration was probably over 1 full second shorter than it would be to run 10.90.

I suppose there are a lot of guys who have run 10.90 and 9.90 with the same car who would know if the stop ratio is the same or different between classes.

Dewdlebug · 11-10-2018, 11:10 AM

I was able to do exactly what Tony mentioned and set up a new Db using the two 1/4 passes. Of course this required me to use the same stop rpm to make things work. But I ended up with about 50% less time in the stop doing it like this. Stop ratio was close to the same, maybe a pinch more.
One thing that I did not catch until Sunday was that I was coming off the stop before the 60' timer. Every adjustment I made to the timer affected the 60' time. Initially I thought track conditions were to blame, but it turned out that wasn't the case. 330' incremental numbers lined up. The right thing to do would have been to raise the stop rpm so I could carry a little more time and get past the 60' cone before coming off the stop. This way I could continue to use the 60' numbers to evaluate track conditions (which were suspect already). But when you're thrown a curve ball like we all were at that race you have to play the hand that you've been dealt.
I've promised myself that I'd work on a ideal 1/8 mi set up in case we get jacked around again like we did at TVRP.

10-30-2018, 10:56 AM	#1
gnicholson Member Join Date: Sep 2011 Posts: 103 Likes: 15 Liked 4 Times in 3 Posts	Re: different ts ratio between 1/8and 1/4 mile i will look over a stretch of good quarter runs and see what the eighth did like you suggested. my point was i have to take out enough numbers to reduce my et approx 4 tenths in the eighth that it changes the ratio but i really need more runs. i doubt we do the 8th index again but you never know. im just curious about this basically

10-30-2018, 03:52 PM	#2
Lenny5160 Senior Member Join Date: Nov 2015 Location: Inver Grove Heights, MN Posts: 898 Likes: 604 Liked 431 Times in 224 Posts	Re: different ts ratio between 1/8and 1/4 mile I see your point also, that if you change your stop duration by a bunch, the ratio could change along with it. Your stop duration was probably over 1 full second shorter than it would be to run 10.90. I suppose there are a lot of guys who have run 10.90 and 9.90 with the same car who would know if the stop ratio is the same or different between classes. __________________ S/ST 51 S/C 53

11-10-2018, 11:10 AM	#3
Dewdlebug Member Join Date: Jan 2009 Location: League City, TX Posts: 124 Likes: 2 Liked 23 Times in 15 Posts	Re: different ts ratio between 1/8and 1/4 mile I was able to do exactly what Tony mentioned and set up a new Db using the two 1/4 passes. Of course this required me to use the same stop rpm to make things work. But I ended up with about 50% less time in the stop doing it like this. Stop ratio was close to the same, maybe a pinch more. One thing that I did not catch until Sunday was that I was coming off the stop before the 60' timer. Every adjustment I made to the timer affected the 60' time. Initially I thought track conditions were to blame, but it turned out that wasn't the case. 330' incremental numbers lined up. The right thing to do would have been to raise the stop rpm so I could carry a little more time and get past the 60' cone before coming off the stop. This way I could continue to use the 60' numbers to evaluate track conditions (which were suspect already). But when you're thrown a curve ball like we all were at that race you have to play the hand that you've been dealt. I've promised myself that I'd work on a ideal 1/8 mi set up in case we get jacked around again like we did at TVRP.