This is how the offset mounts work. They have a slight influence on bump steer due to moving the inner tie rod outwards a little but in our experience, it is not enough to feel. They also put a slight amount of off-center load on the steering rack which could affect wear but in our experience, this is not much of an issue.
We are using GKTech’s inner tie rods. The main difference is that they have a lot more threads on them so you have more flexibility in accommodating different control arm lengths. Man, we wish they had this sort of stuff back in the day. We used to have to make these.
GKTech’s tie rod ends are also great labor savers. They come with 3 different lengths of center section/adjusters to accommodate any length of control arm adjustment with maximum thread engagement. We used to have to hand-make these parts. The GKTech tie rod ends also have a long shank with included spacers for fine-tuning of the bump steer. Everything you need to fully adjust everything for every imaginable situation is engineered in and included!
7 comments
looks fanstastic! I always wondered about these arms and knuckles. Thank you for the in-depth review
“ Road racing cars need Ackerman in their front steering geometry and typically you want a gradually rising Ackerman curve that is slightly less than the geometric true Ackerman. For drifting, you want a digressive Ackerman curve. This tends to understeer in grip driving. GKTech makes 3 different knuckles. A grip driving one, a drift/grip one, and a super angle drift only one.”
^This really is ‘the secret’ to handling with rubber tires and their slip angles. In F1, I know that they even do an Anti-Ackerman setup!
https://www.f1technical.net/forum/viewtopic.php?t=8874
Until you understand these principles in theory and practice, you can’t really have a solid understanding of how to make a car handle.
It’s weird with open-wheel cars, We found that anti-Ackerman causes understeer in road racing in sedan-based cars.
I think it has everything to do with the tire. I am sure that F1 had to change up the anti-Ackerman when they switched to 18” wheel rims this year.
The ‘max lateral load’ (and associated ideal slip angles) for radial street tires is probably way different than the race rubber they run in F1. Also, downforce needs to be factored in.
My Holy Bible on tires is this book, if anyone that wants to race a car is serious about winning, or just being competitive, don’t get a HUGE REAR WING, please read the bleeping manual!
I ordered a copy and the author Paul Haney even signed it! What a guy! So happy for him to take my money!
https://www.standardsmedia.com/The-Racing-and-High-Performance-Tire-8627-book.html
I ordered the book!
they didn’t have it!
the book is out of print, considered a rare book and no one has it!