UPDATE! How to race on a poor track with drag radials
#3065567
08/05/22 07:15 PM
08/05/22 07:15 PM
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Joined: Jan 2003
Posts: 4,244 Canada
Kam*Kuda
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Fairly new driver, and we have a 1/8 track that is not great prep.
I am learning and trying to get consistent I am getting better at the light but need help on this track as my 60 changes a lot
1968 Plymouth RR About 3500 lbs plus me at 200 lbs = 3700 approx Ladder bars are 32 inch Single Adjustable strange shocks with 170lbs springs
I am not experienced but on a good track its 9.6-9.7 1/4 mile times 1.48 60 foots 140-142 mph
I am racing at a pretty poor track and 60 foot at 1.6-1.7s
Radial ET Pros 15 lbs
I spin pretty bad and let off and then get back in and its fine for the rest of the 1/8
Ladder bar is in middle hole. which is parallel to the ground at 0 degrees
Suggestions have been to go to the upper home
Get a lighter spring for the shocks.
Should I leave in 2nd?
Its hard to test and tune at this track as it has no prep on those day (I have tried)
Last edited by Kam*Kuda; 09/18/22 11:45 AM.
1970 Barracuda Convertible 1968 Satellite Street Strip car 1654.5 Mustang 1955 Land Rover
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Re: How to race on a poor track with drag radials
[Re: John Burdine]
#3065613
08/05/22 08:51 PM
08/05/22 08:51 PM
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Joined: May 2004
Posts: 12,410 Taxes & Virus's R-US, NY
Dragula
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I Live Here
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Taxes & Virus's R-US, NY
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Put big slicks on it and don't worry about it....Or, invest in traction control...Ruining a car for no reason is silly.
Last edited by Dragula; 08/05/22 08:52 PM.
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Re: How to race on a poor track with drag radials
[Re: dvw]
#3065639
08/05/22 10:08 PM
08/05/22 10:08 PM
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Joined: Jan 2003
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Kam*Kuda
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Rear springs are way to stiff off the bat. Need 120-125. Doug A friend suggested that as well. We were going to corner weight the car to get a baseline
1970 Barracuda Convertible 1968 Satellite Street Strip car 1654.5 Mustang 1955 Land Rover
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Re: How to race on a poor track with drag radials
[Re: Kam*Kuda]
#3065646
08/05/22 10:29 PM
08/05/22 10:29 PM
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Joined: Aug 2003
Posts: 43,277 Bend,OR USA
Cab_Burge
I Win
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I Win
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Change them dang radials out to a decent set of bias ply tires for now Save the radials for next year or later this year after the track gets some more rubber on it Radials on a bad track are worthless once they start to spin they go up into smoke until you let off and let them grab again Bias ply tires may spin a 1/4 to maybe 1 and 1/2 full turn and then grab or start to grab, not go up in smoke right away. Try them, you will probably like them What size tire, brand and compound are you using now?
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: How to race on a poor track with drag radials
[Re: Kam*Kuda]
#3065659
08/05/22 11:13 PM
08/05/22 11:13 PM
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Kam*Kuda
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Here is a video of a race day. I needed to learn to do a burnout Foot Brake Launch at 2000-2200 rpm. https://www.youtube.com/watch?v=xX3YxC0IjNE100 percent throttle and then 42 percent and then back up Watch till end for slo motion on suspension
Last edited by Kam*Kuda; 08/05/22 11:16 PM.
1970 Barracuda Convertible 1968 Satellite Street Strip car 1654.5 Mustang 1955 Land Rover
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Re: How to race on a poor track with drag radials
[Re: Cab_Burge]
#3065661
08/05/22 11:16 PM
08/05/22 11:16 PM
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Joined: Jan 2003
Posts: 4,244 Canada
Kam*Kuda
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Change them dang radials out to a decent set of bias ply tires for now Save the radials for next year or later this year after the track gets some more rubber on it Radials on a bad track are worthless once they start to spin they go up into smoke until you let off and let them grab again Bias ply tires may spin a 1/4 to maybe 1 and 1/2 full turn and then grab or start to grab, not go up in smoke right away. Try them, you will probably like them What size tire, brand and compound are you using now? I have space for a bigger tire 315 - 60 - 15 Drag ET Pros I need to measure and order rims
1970 Barracuda Convertible 1968 Satellite Street Strip car 1654.5 Mustang 1955 Land Rover
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Re: How to race on a poor track with drag radials
[Re: dvw]
#3065671
08/06/22 12:03 AM
08/06/22 12:03 AM
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Joined: Jan 2003
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Kam*Kuda
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I see no separation in the rear. By watching the video the stiff rear springs are not doing you any favors. It may need the IC raised with radials. You need to hit them harder. Doug yes I agree I didn't see any separation either. Will any brand spring fit on the strange shock? Are the radials supposed to wrinkle too?
1970 Barracuda Convertible 1968 Satellite Street Strip car 1654.5 Mustang 1955 Land Rover
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Re: How to race on a poor track with drag radials
[Re: Kam*Kuda]
#3065695
08/06/22 08:36 AM
08/06/22 08:36 AM
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Joined: Mar 2006
Posts: 9,869 MI, usa
dvw
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I see no separation in the rear. By watching the video the stiff rear springs are not doing you any favors. It may need the IC raised with radials. You need to hit them harder. Doug yes I agree I didn't see any separation either. Will any brand spring fit on the strange shock? Are the radials supposed to wrinkle too? Radials wrinkle very little if any. Without frame by frame you won't see it. Any 2 1/2" spring of the correct length for you shock will work. I'm assuming on the rear you are probably running 12" long springs. But that is a guess. Doug
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Re: How to race on a poor track with drag radials
[Re: justinp61]
#3065727
08/06/22 11:22 AM
08/06/22 11:22 AM
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GY3
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We did some street races with drag radials.
While not the best tire, 100 lbs. of weight over the rear bumper and 2nd gear leave allowed us to get down the worst surfaces.
'63 Dodge 330 11.19 @ 121 mph Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs. 10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.
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Re: How to race on a poor track with drag radials
[Re: GY3]
#3065748
08/06/22 12:25 PM
08/06/22 12:25 PM
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Joined: Aug 2003
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n20mstr
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This car runs 9.30s at 140 , any track anywhere. It’s on a 295 radial What you need is probably a 110 or 95 rear spring . Ladder bars level or 1 or 2* up , and you need a double adjustable shock with at least 4” of travel . Loose on extension, somewhat firm or stiff on rebound . You want to smash the tire and keep it smashed , don’t let it bounce back . Front may need to be more travel and somewhat tight on extension, you want a controlled rise in the front . The nova runs a 2.10 first with a 3.70 rear Not sure what your rear gear is but yes a little less SLR can help Some may not agree , but I think I have some experience with radials
Last edited by n20mstr; 08/06/22 12:52 PM.
....BAD A$$ STREET CAR.....
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Re: How to race on a poor track with drag radials
[Re: n20mstr]
#3065761
08/06/22 01:05 PM
08/06/22 01:05 PM
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Joined: Oct 2015
Posts: 570 UK
rb446
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mopar
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As above^^^
As a marker so to speak for Bias tyre, our '69RR, less hp than you, only 690 through street muffs, mild big ci motor, big torque, 3800lbs@line, rubbish 90/10's on front, caltracs/bars, c/trac 9-ways single adj on 7 stiff, 2 turns preload on bars, 4.10's 10x29 Hoosier bias@17psi, been a best of 1.42 60 normally 1.43>1.45 and a best of 10.30@130 on a good day, normally 10.4's>5's. Lots wrong with it but respectable 60's.
1969 'Cuda 446ci, best 9.96@133.9 in 1990 1971 340 'Cuda, best 11.01@122.8 in 1987
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Re: How to race on a poor track with drag radials
[Re: dvw]
#3065811
08/06/22 03:35 PM
08/06/22 03:35 PM
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Joined: Jan 2003
Posts: 4,244 Canada
Kam*Kuda
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I see no separation in the rear. By watching the video the stiff rear springs are not doing you any favors. It may need the IC raised with radials. You need to hit them harder. Doug yes I agree I didn't see any separation either. Will any brand spring fit on the strange shock? Are the radials supposed to wrinkle too? Radials wrinkle very little if any. Without frame by frame you won't see it. Any 2 1/2" spring of the correct length for you shock will work. I'm assuming on the rear you are probably running 12" long springs. But that is a guess. Doug Thank you I can definately see some wrinkle I think i need to raise the spring for more shock extensions? I think this will raise the rear.
1970 Barracuda Convertible 1968 Satellite Street Strip car 1654.5 Mustang 1955 Land Rover
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