Critque this launch.

L79racer · 10-15-2012, 04:30 PM

Is the nose going up too fast too soon? I've been getting a lot of red lights and was trying to figure out if its just me or the car snatching the wheels out of the lights.Thanks in advance. I've been running 10.50 index all year under part throttle with good lights. Now I'm running full throttle and my lights suck.

http://s807.beta.photobucket.com/use...13ac2.mp4.html

Another view

http://s807.beta.photobucket.com/use...02dbe.mp4.html

Ed Wright · 10-15-2012, 05:43 PM

Certainly nothing dramatic there. It's going forward before the tires come off the ground, it's not snatching the tires out of the lights. Looks like a pretty smooth launch. Don't know why it would screw up your lights. Looks very easy to drive. At least you can see where your going. :-)

jim hensley · 10-15-2012, 05:57 PM

Looks like in the side view video you spun the tires about 1 rotation.

FED 387 · 10-15-2012, 06:08 PM

side view some slip --view from the right rear looked better no slip noticeable

L79racer · 10-15-2012, 06:38 PM

Quote:

Originally Posted by Ed Wright

Certainly nothing dramatic there. It's going forward before the tires come off the ground, it's not snatching the tires out of the lights. Looks like a pretty smooth launch. Don't know why it would screw up your lights. Looks very easy to drive. At least you can see where your going. :-)

Well I Guess its just me. I'll have to adjust to running more power.

Videos are of two differnt passes.

Bob Don · 10-15-2012, 07:11 PM

Try a larger diameter front tire or let a little air out your front. This will give you a bigger bulge at the bottom of the front tire and allow you a little more time in the front beam before redlighting.

L79racer · 10-15-2012, 07:17 PM

Quote:

Originally Posted by Bob Don

Try a larger diameter front tire or let a little air out your front. This will give you a bigger bulge at the bottom of the front tire and allow you a little more time in the front beam before redlighting.

I usually run 33lbs in the front. What should I drop it to?

Ed Wright · 10-15-2012, 07:23 PM

Letting air out of the rears make more difference in my lights than out of the front.

Adger Smith · 10-15-2012, 08:25 PM

Side view, too much rotation on the hit. Inconsistant for bracket style racing, great for max et over dead hook.
side view : better hook on the hit. like Ed said car going forward before the front end lifted out of the lights.. In the back the tire side wall has too much bulge. that is making sidewall "work" too hard. Notice how the tire kind of "wallows around after the initial hit. wheel width needs to be matched to the tire or I would get a stiffer sidewall tire with matching wheel size. Then when the front end comes down you have massive toe /bump steer. that slows the car down. I guess i could do it frame by frame and get a few more ideas of what is going on. Hope that helps.

FED 387 · 10-15-2012, 08:29 PM

28ish see what happens ----if it improves maybe down a 1/2 pound at a time until its consistent---otherwise go up a 1/2 pound from 28 keep playing with it---just do maybe 330 foot or less launches til ya get it right--- all yer concerned with is the launch no point running it a 1/8 or more

10-15-2012, 04:30 PM	#1
L79racer Member Join Date: Jan 2005 Location: North Massapequa, NY Posts: 218 Likes: 0 Liked 0 Times in 0 Posts	Critque this launch. Is the nose going up too fast too soon? I've been getting a lot of red lights and was trying to figure out if its just me or the car snatching the wheels out of the lights.Thanks in advance. I've been running 10.50 index all year under part throttle with good lights. Now I'm running full throttle and my lights suck. http://s807.beta.photobucket.com/use...13ac2.mp4.html Another view http://s807.beta.photobucket.com/use...02dbe.mp4.html Last edited by L79racer; 10-15-2012 at 04:33 PM.

10-15-2012, 05:43 PM	#2
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 390 Times in 170 Posts	Re: Critque this launch. Certainly nothing dramatic there. It's going forward before the tires come off the ground, it's not snatching the tires out of the lights. Looks like a pretty smooth launch. Don't know why it would screw up your lights. Looks very easy to drive. At least you can see where your going. :-) __________________ Ed Wright 4156 SS/JA

10-15-2012, 05:57 PM	#3
jim hensley Junior Member Join Date: Mar 2012 Location: columbia tn Posts: 50 Likes: 0 Liked 0 Times in 0 Posts	Re: Critque this launch. Looks like in the side view video you spun the tires about 1 rotation.

10-15-2012, 06:08 PM	#4
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,412 Likes: 511 Liked 329 Times in 177 Posts	Re: Critque this launch. side view some slip --view from the right rear looked better no slip noticeable

10-15-2012, 07:11 PM	#6
Bob Don VIP Member Join Date: Oct 2002 Location: Greater Boston Posts: 1,494 Likes: 1,112 Liked 893 Times in 190 Posts	Re: Critque this launch. Try a larger diameter front tire or let a little air out your front. This will give you a bigger bulge at the bottom of the front tire and allow you a little more time in the front beam before redlighting. __________________ Bob Don 128 SS

10-15-2012, 07:23 PM	#8
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 390 Times in 170 Posts	Re: Critque this launch. Letting air out of the rears make more difference in my lights than out of the front. __________________ Ed Wright 4156 SS/JA

10-15-2012, 08:25 PM	#9
Adger Smith VIP Member Join Date: Dec 2001 Location: Texarkana Ark/TX Posts: 2,446 Likes: 575 Liked 880 Times in 311 Posts	Re: Critque this launch. Side view, too much rotation on the hit. Inconsistant for bracket style racing, great for max et over dead hook. side view : better hook on the hit. like Ed said car going forward before the front end lifted out of the lights.. In the back the tire side wall has too much bulge. that is making sidewall "work" too hard. Notice how the tire kind of "wallows around after the initial hit. wheel width needs to be matched to the tire or I would get a stiffer sidewall tire with matching wheel size. Then when the front end comes down you have massive toe /bump steer. that slows the car down. I guess i could do it frame by frame and get a few more ideas of what is going on. Hope that helps. __________________ Adger Smith (Former SS)

10-15-2012, 08:29 PM	#10
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,412 Likes: 511 Liked 329 Times in 177 Posts	Re: Critque this launch. 28ish see what happens ----if it improves maybe down a 1/2 pound at a time until its consistent---otherwise go up a 1/2 pound from 28 keep playing with it---just do maybe 330 foot or less launches til ya get it right--- all yer concerned with is the launch no point running it a 1/8 or more