Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.
The relationship between the steering axis and true vertical is the castor. Zero castor is when the steering axis is vertical. When the steering axis is tilted backwards (by far the most common design) it has positive castor. Unequal castor from side to side causes steering pull to the side which has the least amount of positive castor.
