With a spindle insert like this, you can change Castor +/- 3°, while, if you want, changing camber 0° to 5°. Different inserts for different angles. In the bottom of the spindle yoke would be a ball socket arrangement for alignment.
Could you please explain exactly where and how your insert is to be inserted and how it alters the caster angle ( defined as the angle between the vertical, and the axial centre line of the kingpin bolt as viewed from the side of the kart) on a kart where the kingpin bearings are top and bottom of a tubular housing welded to the frame at a predetemined angle.
This is a picture of an earlier version, helps you see the relationship. In this version, the yoke is welded to the frame. The spindle is not shown. Does this help?
Does this help?
Well it’s an improvement on the first one, thanks a lot.
Setting up a fixture to hold the frame on a mill to machine those square holes in the C-hangers would be a treat. If someone wanted to modify their current frame to except those pills.
Is this an idea for a product, or just an exercise for explanation purpose?
What are the advantages\disadvantages when compared to, say the sniper kit?
Doing the machining – on the kart – would be a job right? No, I think it would be easier to just cut off your old spindles and weld new spindles on, or, it’s something for the kart manufactures to think about installing on new karts.
What do you think of the idea?
Are we talking about spindles, or the “C” part of the frame. I ask because the illustration looks like it’s an insert for the C, but the conversation says spindle.
I think you could make a jig\insert of some description that would make it acceptably close when milling or drilling.
“Spindle holder” would be more accurate because a lot of karts have this type of bracket welded to the frame, but not always, there are many karts out there with the reverse configuration, a short round tube welded to the frame.
What about the idea? Good, bad, stupid! lol
It’s the machining of the square hole I question. On a current frame, to do this would take a lengthy setup procedure. Keeping the clocking of the holes exactly the same side to side. Fixturing the frame to machine the same king pin angle side to side.
Yes Alvin, starting with pre-machined C-hangers then cutting and re-weld would be an easier approach. Although I like idea, and understand your view point, the Sniper system is an easier upgrade onto a “used” frame. As long as your hangers have enough material to oversize the kingpin holes.
Having only seen pictures of their system, just today, I’m not sure of all the advantages my system might have. It’s a lot simpler, I think. No measuring, just put the right insert in it. When I started this drawing I had no idea what a Sniper was, why would I lie? Sometimes, in the course of history, a need for something becomes apparent, and it just happens. Sometimes that need becomes apparent to more than one person and without any collaboration, they will seek to fill that need, totally independent of each other. Sometimes it’s just one person who comes up with a new idea. I like to think of my chain breaker as one of those ideas.
It’s similar in concept to the IPK, sniper designed, independently adjustable caster camber kits.
They use different bushings in the image below to adjust caster, and the screws to adjust camber (which is more easiliy measured).
The original sniper system that is used by CRG and others has notches for caster with each notch corresponding to a degree (i think). Plus you don’t have to take the whole spindle apart to change it, you loosen and adjust.