Straight line down thru the steering axis to the ground is 1 Point, a second line straight down to the ground is the other

thats Trail.. that is the basics of your steering geometry Trail, the distance between those 2 points.



If cut and paste something you read, is all you can do.. Go to a Bike shop. they will help you figure it out.



what the fork bearings sit against on the fork, the crown race, is supported by the machined face of the crown race seat.
crown race is part of the Headset bearings.

tapered steerer, 9/8" at the top and 1.5 at the bottom , Anything is definitely going to be way over the dream cost ceiling..

even retail to replace what you have with another one.