Tires bounce in burnout
#2788999
06/24/20 09:58 PM
06/24/20 09:58 PM
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Joined: Aug 2003
Posts: 4,688 On the parachute mount
n20mstr
OP
master
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OP
master
Joined: Aug 2003
Posts: 4,688
On the parachute mount
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Tires bounce in burnout and vibration before finish line .
Tire balance or driveshaft/u-joints?
Hoosier radials they are balanced and take a lot of weight Driveshaft is Denny’s nitrous ready , been in car 10 years . Approx 500 passes and who knows street miles
....BAD A$$ STREET CAR.....
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Re: Tires bounce in burnout
[Re: n20mstr]
#2789078
06/25/20 08:10 AM
06/25/20 08:10 AM
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Joined: Jan 2003
Posts: 13,376 Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,376
Marion, South Carolina [><]
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Tony, I'd be leaning more towards it being a tire issue. I've twisted driveshafts in the past and only had a vibration through 1st and 2nd gear...not noticeable anywhere else. Once in high gear, it smoothed right out. Had this happen twice. Last year I had a slight vibration in 2nd gear only...turned out to be wear in the U joints. New U joints and it's smooth as silk again.
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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Re: Tires bounce in burnout
[Re: BigBlockGTS]
#2789083
06/25/20 08:17 AM
06/25/20 08:17 AM
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Joined: Aug 2003
Posts: 4,688 On the parachute mount
n20mstr
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OP
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On the parachute mount
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n20mstr- I suspect you have forgotten more than me but I spoke with a real good local driveline shop recently that did drag racing stuff- He said driveshafts do wear out. I don't know your power level but 500 passes is a decent number and it could be that it twisted and is now out of balance. Its a small block duster street car . 400+ ? Hp . Runs 11 teens at 120. I think It’s the tires. I also think the driveshaft needs maintenance. It’s been in the car for ten years . He races multiple classes most times and like I said it’s got well over 500 passes on it most of them 11.50 to 11 teens . It’s a 3200lb street car . It’s got some street miles on it also .
....BAD A$$ STREET CAR.....
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Re: Tires bounce in burnout
[Re: an8sec70cuda]
#2789085
06/25/20 08:21 AM
06/25/20 08:21 AM
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Joined: Aug 2003
Posts: 4,688 On the parachute mount
n20mstr
OP
master
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OP
master
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Posts: 4,688
On the parachute mount
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Tony, I'd be leaning more towards it being a tire issue. I've twisted driveshafts in the past and only had a vibration through 1st and 2nd gear...not noticeable anywhere else. Once in high gear, it smoothed right out. Had this happen twice. Last year I had a slight vibration in 2nd gear only...turned out to be wear in the U joints. New U joints and it's smooth as silk again. He has balanced the tires twice now . On a spin balancer . I told him call Hoosier and see if he did something wrong . Maybe they can only be bubble balanced ? Or maybe something wrong with these tires. They take 9-10oz to balance .even tried moving them around on the rim
Last edited by n20mstr; 06/25/20 08:22 AM.
....BAD A$$ STREET CAR.....
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Re: Tires bounce in burnout
[Re: n20mstr]
#2789087
06/25/20 08:23 AM
06/25/20 08:23 AM
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Joined: Jan 2003
Posts: 12,189 Benton, IL.
DaveRS23
Special needs idiot
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Special needs idiot
Joined: Jan 2003
Posts: 12,189
Benton, IL.
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Check your tires for roundness. We see more and more tires that are egg shaped. And no amount of weights will offset it. I have a pair of MT drag radials that are so out of round that they will shake the fillings out of your teeth by 60mph.
Master, again and still
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Re: Tires bounce in burnout
[Re: DaveRS23]
#2789091
06/25/20 08:49 AM
06/25/20 08:49 AM
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Joined: Jan 2005
Posts: 2,540 Milwaukee WI
TRENDZ
master
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master
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Posts: 2,540
Milwaukee WI
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Put the car on stands/ hoist. Run the car in low gear and look for oval running tire or wheel. It would not be unusual to see a powerful radial car to have bent wheels or axles.
"use it 'till it breaks, replace as needed"
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Re: Tires bounce in burnout
[Re: n20mstr]
#2789092
06/25/20 08:55 AM
06/25/20 08:55 AM
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Joined: May 2019
Posts: 165 W. Pa
usp4u
member
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member
Joined: May 2019
Posts: 165
W. Pa
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Tony, I'd be leaning more towards it being a tire issue. I've twisted driveshafts in the past and only had a vibration through 1st and 2nd gear...not noticeable anywhere else. Once in high gear, it smoothed right out. Had this happen twice. Last year I had a slight vibration in 2nd gear only...turned out to be wear in the U joints. New U joints and it's smooth as silk again. He has balanced the tires twice now . On a spin balancer . I told him call Hoosier and see if he did something wrong . Maybe they can only be bubble balanced ? Or maybe something wrong with these tires. They take 9-10oz to balance .even tried moving them around on the rim If I had a tire that HAD to have that much weight....I'd throw it out.
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Re: Tires bounce in burnout
[Re: TRENDZ]
#2789095
06/25/20 09:08 AM
06/25/20 09:08 AM
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Joined: Aug 2003
Posts: 4,688 On the parachute mount
n20mstr
OP
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OP
master
Joined: Aug 2003
Posts: 4,688
On the parachute mount
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Put the car on stands/ hoist. Run the car in low gear and look for oval running tire or wheel. It would not be unusual to see a powerful radial car to have bent wheels or axles. I don’t know if I would say it’s “powerful” lol but it’s got an 8.8 from an explorer under it . Stock axles . We are going to run it on stands see what the tires rims axles are doing
....BAD A$$ STREET CAR.....
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Re: Tires bounce in burnout
[Re: n20mstr]
#2789109
06/25/20 10:03 AM
06/25/20 10:03 AM
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Joined: Jan 2003
Posts: 13,376 Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,376
Marion, South Carolina [><]
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I'd definitely do what Trendz suggested! I forgot to mention a couple years ago I also had a vibration that turned out to be twisted axles. Again, wasn't noticeable at speed. I found it by letting the car idle in gear on jackstands. https://www.youtube.com/watch?v=u7en1p9e7iU
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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Re: Tires bounce in burnout
[Re: usp4u]
#2789110
06/25/20 10:10 AM
06/25/20 10:10 AM
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Joined: Mar 2006
Posts: 9,861 MI, usa
dvw
master
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master
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Posts: 9,861
MI, usa
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He has balanced the tires twice now . On a spin balancer . I told him call Hoosier and see if he did something wrong . Maybe they can only be bubble balanced ? Or maybe something wrong with these tires. They take 9-10oz to balance .even tried moving them around on the rim [/quote]
If I had a tire that HAD to have that much weight....I'd throw it out. [/quote]
Apparently you've never balanced a bias ply slick Doug
Last edited by dvw; 06/25/20 10:11 AM.
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Re: Tires bounce in burnout
[Re: dvw]
#2789129
06/25/20 11:33 AM
06/25/20 11:33 AM
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Joined: Aug 2003
Posts: 43,237 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,237
Bend,OR USA
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He has balanced the tires twice now . On a spin balancer . I told him call Hoosier and see if he did something wrong . Maybe they can only be bubble balanced ? Or maybe something wrong with these tires. They take 9-10oz to balance .even tried moving them around on the rim
If I had a tire that HAD to have that much weight....I'd throw it out. [/quote] Apparently you've never balanced a bias ply slick Doug [/quote]
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Tires bounce in burnout
[Re: Cab_Burge]
#2789178
06/25/20 02:47 PM
06/25/20 02:47 PM
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Joined: May 2019
Posts: 165 W. Pa
usp4u
member
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member
Joined: May 2019
Posts: 165
W. Pa
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He has balanced the tires twice now . On a spin balancer . I told him call Hoosier and see if he did something wrong . Maybe they can only be bubble balanced ? Or maybe something wrong with these tires. They take 9-10oz to balance .even tried moving them around on the rim
If I had a tire that HAD to have that much weight....I'd throw it out. Apparently you've never balanced a bias ply slick Doug [/quote] [/quote] nope. that sound ridiculous
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Re: Tires bounce in burnout
[Re: usp4u]
#2789204
06/25/20 05:14 PM
06/25/20 05:14 PM
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Joined: Dec 2006
Posts: 2,115 Byron, NY
W.I.N. Racing
top fuel
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top fuel
Joined: Dec 2006
Posts: 2,115
Byron, NY
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Just mounted and balanced these Brand New .... 7oz... I've seen that much and more, more times than not.
'01 P1500, Blown/Inj BAE,/Veney ,Bruno/CS2,Dana 60 '01 Dodge 3500 S Cummins Auto, Fresh air kit, 4" Exhaust, '05 Dodge Magnum R/T - Too Much to list '60 Willys CJ5 '01 International LPX - Project,DT466, Allison '64 Plymouth Valiant, Inj 528 Hemi, 2spd
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Re: Tires bounce in burnout
[Re: usp4u]
#2789240
06/25/20 07:39 PM
06/25/20 07:39 PM
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Joined: Aug 2003
Posts: 43,237 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,237
Bend,OR USA
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I have a old bubble balancer along with a really old(1950 tech.) mechanical tire mounting machine. I replaced Hoosier, they have a bubble on one tire at the edge of the where the tread would be 13.5x32x15 W slicks on my S/P car this winter with a new set of Goodyear 15x33x15. I did all the work here in my shop and when it came time to balance the new tires I had a really hard time balancing these tires on my old bubble balancer, the rims are a old set of Monoque 15x15 with 3.5 inch back spacing. I mounted and balanced the Hoosier and I don't remember having the same issue as these Goodyear, the Goodyears needed very little weight, maybe 2.5 to 4.0 ounces per tire so maybe their not bad. I have ran them in the 1/4 mile(147+MPH) with no issues that I noticed
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Tires bounce in burnout
[Re: Cab_Burge]
#2789340
06/26/20 07:14 AM
06/26/20 07:14 AM
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Joined: Dec 2005
Posts: 1,495 Shelby mi.
JAKE68
pro stock
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pro stock
Joined: Dec 2005
Posts: 1,495
Shelby mi.
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WE HAVE A LOAD FORCE BALLANCER AND YOU CAN GET IT TO BALLANCE BUT THE LOAD FORCE MAY BE WAY OUT(EGG SHAPE). WE HAVE SEEN 25-50 LBS OF LOAD FORCE.
JAKES AUTOMOTIVE
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