b'Toe, Bump & Ackerman Lets taLk toe, Bump & ackerman Toe-OutHow Much?Bump-OutHow Much? AckermanHow Much? Good questions with no common answer that fits every car. I do have a good rule of thumb for each Ive developed over the years.I start with Ackerman. How much we need depends on how well were working the inside front tire of the particular race car. Roll angle plays a big role in this. The flatter we get the car to run, the better it works the inside front tire & the less Ackerman we need to mechanically twist the tire to achieve optimum slip angle on the inside front tire (and therefore grip).As a starting point ONLY, my Ackerman guideline is: If the car is rolling less 0.5 or less (Max) we need 25-40% Ackerman If the car is rolling around 1.0 we need 50-70% Ackerman If the car is rolling around 2.0 we need 80-100% Ackerman If the car is rolling more than 3 the Ackerman doesnt matter, as the inside front tire isnt loaded anyway. For static Toe-Out & Bump-Out, if we have enough Ackerman & especially if the Ackerman is tunable, then I have a very basic toe setting of 1/8 Toe-Out (Total) at ride height & bump-out each side 1/32 AT MY TARGET DIVE NUMBER for a total of 1/16 bump-out. This gives us a total of 3/16 toe-out in full dive under brakingjust before we turn the steering wheel into the corner. *Obviously the toe-out increases dramatically as the Ackerman does its job.Just for conversation sake with cars in the 105-110 wheelbase zone & track widths around 60100% Ackerman will have the inside front tire turned about 6 more than the outside front tire. Ackerman of 75% would be around 4.5, 50% around 3, 25% around 1.5. You get the general idea.But, if we cant get enough Ackerman in the car, we can cheat it with a little additional static toe-out & a lot more bump-out. The most Ive EVER ran on a short, tight road course was 1/4 of toe-out & 1/4 of bump out on a POS car with zero Ackerman. I know people that have ran an inch of total toe-out & bump-out in autocross cars. It worked, and by worked, I mean the car was better than not running big toe-outbut thats not the right way to do it. Getting the Ackerman right & running smaller toe-out & bump-out is MUCH faster, more consistent & doesnt kill tires. Next topic : Rag JointsWTF? Rag joints in steering column assemblies is purely for street cruiser comfort. The goal of a rag joint is to use the layer of rubber & fibers to isolate the driver from the road.Why in the name of all that is holy and sacred in racing would we want to do that?We do not . as they cause delay in steering response & isolate the driverfrom feeling what the tires are doing & how the car is handling. Yes, I sell a rag joint for my clients that use their muscle car as a daily driver & cross country touring car. They have different goals. But for high performance & race cars, we want to throw these rag joints as far as we possibly can & replace them with an actual coupler or u-joint. Only precision U-Joints come in RSRT steering column packages.392'