Editing Swapping to rack and pinion steering (section)
Jump to:
navigation
,
search
==Rack height importance== We mocked up everything in the fashion described above and then designed our rack takeoff mount (inner tie rod mount) to fit. Once the inner bracket was welded up and mounted to the rack, we installed the tie rods and checked for bump steer. The final minutest adjustments were made by tapping the rack mounts on the frame with a hammer. Remember, at this point the rack was just clamped to the frame. When we found perfection, we tack welded the frame mounts, removed the complete rack assembly and welded the mounts and gussets in place. To understand how crucial the height location is, follow this mathematical extrapolation: A 1/8" difference in height of the rack, caused a 1/16" difference in the location of the tie rod arc (at full compression or rebound), compared to the ball joint arc. 1/16" at the tie rod (6 inches from the spindle center) becomes almost 3/16" at the rear of the tire (typical 30 inch tire). This causes a reciprocal movement in the ''other'' direction at the front of the tire. Now we are dealing with 5/16". Note that BOTH wheels are doing this, so the toe in (or out) changes 5/16" x 2 = 10/16" or 5/8" total during suspension travel caused by acceleration or braking; all this while you are trying to drive in a straight line. This illustrates how height is the most crucial dimension in locating your inner tie rods.
|
Editing help
(opens in new window)
Personal tools
Log in / create account
Namespaces
Page
Discussion
Variants
Views
Read
Edit
View history
Actions
Search
Navigation
Main Page
Recent changes
Random page
Help
All articles
Start a new article
Hotrodders forum
Categories
Best articles
Body and exterior
Brakes
Cooling
Electrical
Engine
Fasteners
Frame
Garage and shop
General hotrodding
Identification and decoding
Interior
Rearend
Safety
Steering
Suspension
Tires
Tools
Transmission
Troubleshooting
Wheels
Toolbox
What links here
Related changes
Special pages
Terms of Use
Copyright
Privacy Policy
Your Privacy Choices
Manage Consent