Thread: lets see some ratrods

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Originally Posted by ChopTopJimmy

I agree with you about the spring perch positioning and shock mounts. As far as the panhard bar, I don't run one on the front of my car either and have never had a lick of problems. I know several guys that don't have one on the front... Why do you think one is required?

Here is what Speedway has to say:There is some controversy surrounding the use of a Panhard rod on cross spring drop axle suspension systems . While there are many hotrods running around without one most of the top chassis builders feel that it is a necessary part of a front suspension , especially with a 4 bar . With an original buggy spring and wishbone setup , the triangle shape of the wishbone limited side to side motion .Even a split wishbone or radius rod front end with the axle mounting points wider than the frame mounting points provides some measure of triangulation to help control side motion . By its design the four-bar front end is engineered to allow the front suspension to travel freely ( thus providing better ride quality and handling characteristics ) but it can not control side to side motion . The problem is compounded by cross- steering , as any side to side movement WILL cause bump steer . A Panhard bar should be considered mandatory on all four-bar systems and recommended on all cross steer systems . While building my ride every rod I looked at had one , so I put one on mine. LFE

Originally Posted by luckyfasteddie

Here is what Speedway has to say:There is some controversy surrounding the use of a Panhard rod on cross spring drop axle suspension systems . While there are many hotrods running around without one most of the top chassis builders feel that it is a necessary part of a front suspension , especially with a 4 bar . With an original buggy spring and wishbone setup , the triangle shape of the wishbone limited side to side motion .Even a split wishbone or radius rod front end with the axle mounting points wider than the frame mounting points provides some measure of triangulation to help control side motion . By its design the four-bar front end is engineered to allow the front suspension to travel freely ( thus providing better ride quality and handling characteristics ) but it can not control side to side motion . The problem is compounded by cross- steering , as any side to side movement WILL cause bump steer . A Panhard bar should be considered mandatory on all four-bar systems and recommended on all cross steer systems . While building my ride every rod I looked at had one , so I put one on mine. LFE

Read part of your quote from Speedway; While there are many hotrods running around without one MOST of the top chassis builders feel that it is a necessary part of a front suspension. That says most, not all. I've never had a problem with Bumpsteer and I'm sure plenty of others haven't also. That's why there are many Hotrods running around Without one. CTJ

What type of front end are you running ?

Originally Posted by luckyfasteddie

What type of front end are you running ?

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Dropped I-beam w/4 bar, no bumpsteer ever...