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| | | | Joined: Apr 2010 Posts: 114 Shop Shark | | Shop Shark Joined: Apr 2010 Posts: 114 | for a 51 chevy 1/2ton pu? Keep hearing about the possiblity of bump steer. Has anyone purchased this axle from classicparts.com or ran into this issue? | | | | | Joined: Dec 2006 Posts: 1,464 Shop Shark | | Shop Shark Joined: Dec 2006 Posts: 1,464 | I had Sid at droppedaxles.com do a 3" dropped axle for my '53. With any drop of that amount you'll probably have to do a tie rod "flip" so that the tie rod runs under the springs. With a drop of that amount bump steer is a common issue because the drag link is no longer level. There are several ways to get it level again, i.e., the drag link can be flipped on some models, the steering arms can be modified, etc.
Give Sid a call, he has all the tech info and all the parts you need to do it right the first time and he's a heck of a nice guy to do business with. | | | | | Joined: Sep 2006 Posts: 33 'Bolter | | 'Bolter Joined: Sep 2006 Posts: 33 | I have a 4" dropped axle for my 50 from Sid's. Great guy. I highly recommend Sid's axles. Unless the steering arm/ drag link is parallel to the ground, you'll get bump steer. As long as all front end parts are new and in good shape, bump steer isn't that bad. Keeps you awake when your tired!
BigMike | | | | | Joined: Apr 2010 Posts: 114 Shop Shark | | Shop Shark Joined: Apr 2010 Posts: 114 | | | | | | Joined: Dec 2006 Posts: 1,464 Shop Shark | | Shop Shark Joined: Dec 2006 Posts: 1,464 | Personally I wouldn't put up with any bump steer. You might hit that bump as your travelling north (let's say) at 55 mph and instantly be put in the path of a southbound Freightliner. Not a safe situation at all. | | | | | Joined: Mar 2008 Posts: 55 Wrench Fetcher | | Wrench Fetcher Joined: Mar 2008 Posts: 55 | Ok not to be stupid but what is bump steer again? I bought my 3 inch drop years ago from a company called CEN-PEN. They sold it but were'nt much help after that. Did put it on the frame once and did have to put drag link underneath spring. Finnally going to get started on this truck after almost 20 years. Now don't get me wrong I have done some little things but nothing major. | | | | | Joined: Aug 2007 Posts: 1,859 Grumpy old guy playing with trucks, cars, and boats | | Grumpy old guy playing with trucks, cars, and boats Joined: Aug 2007 Posts: 1,859 | bump steer is when you hit a bump and the geometry of the front steering components is not correct causing you to sharply veer to the right/left because of the bump.
all you have to remember, any bump steer is bad
The problems we face today can not be addressed at the same level of intelligence we were at when we created them - Albert Einstein Or with the same level of $ - Me
| | | | | Joined: Sep 2006 Posts: 33 'Bolter | | 'Bolter Joined: Sep 2006 Posts: 33 | make sure your drag link is parallel to the ground and you should be fine. New shackles, bushings and pins wouldn't hurt either. If you have to heat the steering arm, make sure it's done by someone who knows what they are doing. If it's done wrong, it could lead to failure while your driving down the road. and that would be a bad thing!
BigMike | | |
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