Holy Bumpsteer Batman!

Suspension Tuning, Troubleshooting, Design and Discussion

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John_Heard
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Holy Bumpsteer Batman!

#1 Post by John_Heard » Thu Sep 18, 2008 10:27 am

In case you've never seen a bad case of bumpsteer, here's an excellent example ~ bet this is a handful!

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supernova
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Re: Holy Bumpsteer Batman!

#2 Post by supernova » Thu Sep 18, 2008 12:08 pm

Holy crap Batman! :smt003

Looks like a cheap set of lower a-arms and stock steering!

Ok class, what not to do! :thumb:
Blackhoodmafia!!!! :mrgreen: :mrgreen:

1972 Nova SS
572 C.I. BBC

Best to date: 1/8
et: 5.28
mph: 134
new wt. 3340 lbs
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John_Heard
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Re: Holy Bumpsteer Batman!

#3 Post by John_Heard » Thu Sep 18, 2008 12:43 pm

Wonder what that is hanging underneath the crossmember? Header Savers of some sort?
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vegaracer
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Re: Holy Bumpsteer Batman!

#4 Post by vegaracer » Thu Sep 18, 2008 4:32 pm

Look how much the left front wheel is steering out and the right front is straight ahead. :shock:
Feenstra's Towing

1973 Vega
434 SBC, N.A.
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supernova
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Re: Holy Bumpsteer Batman!

#5 Post by supernova » Thu Sep 18, 2008 5:15 pm

John_Heard wrote:Wonder what that is hanging underneath the crossmember? Header Savers of some sort?
It looks like a set of lights?
Maybe it's a set of lights so when it picks the front end up at night he can still see the track! :smt003
Blackhoodmafia!!!! :mrgreen: :mrgreen:

1972 Nova SS
572 C.I. BBC

Best to date: 1/8
et: 5.28
mph: 134
new wt. 3340 lbs
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mikeT
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Location: sturgis michigan

Re: Holy Bumpsteer Batman!

#6 Post by mikeT » Thu Sep 18, 2008 6:21 pm

Heres another example of extreme bumpsteer, And yes it was a handfull with a 4 speed and an 81 inch wheelbase. Ive heard it called a "10 second hand grenade"!
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nobigthing3.jpg
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Bob West
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Re: Holy Bumpsteer Batman!

#7 Post by Bob West » Thu Sep 18, 2008 7:56 pm

A couple guys at Ozark have channel welded to the crossmember and a block of aluminum bolted in between so if the car wheelies and comes down a bit hard it hits the aluminum and throws no sparks. Looks very similar to that pic.
72 Malibu-Nov. '08-1.329-3.995-6.280@106.94-9.988@131.62
best 60ft to date- 1.319
http://www.dragtimes.com/1972-Chevrolet ... -5251.html
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ytnova
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Re: Holy Bumpsteer Batman!

#8 Post by ytnova » Fri Sep 19, 2008 9:11 am

Yikes!!! betcha thats a hand full on the top end. Kinda looks like one of those flaming river or unisteer rack assemblies hanging down.
I am not really sure what the question is, but I am pretty sure the answer is Big Block.
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gmracing355
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Re: Holy Bumpsteer Batman!

#9 Post by gmracing355 » Sat Sep 20, 2008 4:39 am

Looks like my old chevy powered 63 ford falcon.The wheels are everywhere execpt straight on the launch!
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HAULIN' IT
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Re: Holy Bumpsteer Batman!

#10 Post by HAULIN' IT » Sun Sep 21, 2008 10:28 am

WOW! There is a whole lot going on there. I agree with yt, the "boxes" look what the rack may be mounted to. Something is way wrong (length of ratio of upper & lower control arms?) to end up with that. A guy with an alignment machine would spend most of the day... :scratch: :scratch: :scratch:
Was this picture found where someone was trying to help out this guy? He has to know something is wrong, but maybe has never seen it. There is some basic suspension motions being abused/ignored on that one. Lorne
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John_Heard
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Re: Holy Bumpsteer Batman!

#11 Post by John_Heard » Sun Sep 21, 2008 12:29 pm

It was just a photo I ran across from Ozark's Street Machines race, I don't know the guy...
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Gus68
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Location: Minnesota

Re: Holy Bumpsteer Batman!

#12 Post by Gus68 » Sun Oct 05, 2008 10:33 pm

I think the lug hnuts are loose!!! Look at the pass side rotor compared to the tire!!!!
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drummondracing
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Location: Colonial Beach VA If I am not at home or the track then I am probably at HOOTERS

Re: Holy Bumpsteer Batman!

#13 Post by drummondracing » Sun Oct 05, 2008 11:10 pm

Id say he is loosing at least a tenth right there.
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TubbedTruck67
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Re: Holy Bumpsteer Batman!

#14 Post by TubbedTruck67 » Mon Oct 06, 2008 4:43 pm

Huh this car races drag radial w us at ozark its a 5.40 car with a sbc and nitrous. Hope they get that fixed.
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