I'm using the standard Gemini Kart spindle and yoke on a bespoke upright to my suspension. https://www.geminikarts.co.uk/product/cyclekart-front-axle/
16 degree KPI
6 degree castor
Akerman as per Gemini
and at the moment I have positive camber by about 1 degree. This is adjustable in my set up and the least of the worries with the shape of the tyres.
The whole shebang is set to 3mm toe in.

... All of this is yet to be fully proved.
Jim

Morning all, I have just been trawling the Sywell website trying to find mention of food availability at the venue, and, not a mention of consumables anywhere. As Mrs JimR1999 will not go anywhere without foreknowledge of the eating arrangements, can anyone with experience of this event give me an idea of availability of grub in the area around the campsite and at the event?

Sorry Chris, my bad I should have payed more attention to the rules. I was just looking at Bills profile and it had a Maserati V8R1 as inspiration car, which I believe had torsion bar suspension not dissimilar to the old 1930's Citroen traction avant hence the torsion bar links. I think the set up in the second video actually has a solid front axle mounted to the torsion bars via drop links in his future videos.
If you need the post removing I will gladly.
Jim

First trip out to a small car park in a private location of a club I am a member of. Not the wide open spaces I would prefer for a full test but enough to give me first impressions.
1. It takes off like a scalded cat.
2. The throttle response is good, but the amount of travel the pedal needs to actuate the throttle takes a light foot.
3. brakes need bedding in but can lock up the rear
4. turning circle is great
5. Steering could get a little heavy on the arms if I did a lot of turning
6. REMINDER TO SELF!!! Don't dab the accelerator and turn in, you lift the inside wheel too easily"
7. Fix the front grill your fat belly dislodged whilst unloading. 
I am claiming this as a success, it was fun and informative. The seat works well for a bit of comfort and the springs coped with all the pot holes in the car park... Here is a bit of video footage of the ride...
https://youtu.be/f7m3Q8fRNPc

Are we adding our own cars or are you doing it en-mass Jim?

Yes Chris, I would appreciate measurements from anyone who went this route to see if it is viable. The width of the rails seems to be about right for track to allow a reasonable amount of wheel angle?

Looks like a fine start Moogie

Looked great fun Chris. A long way from home for me but who knows what next year will bring.
A suggestion for the name of the cup though "the son of the beach cup"