Here is what I have currently:
Trike kit manufacturer and tire size
Towpac with 12 inch wheels
Tire pressure of trike tires
Was at 32 per tire recommendations. Now 26. May go a bit lower.
Tire pressure of silverwing
Set to what tire says
When I bought it was at 1. Riding with out trike I set it to 3.
Going to try 1 again to feel the difference.
What you might change for 2up riding vs 1up riding
No idea. Have not tried.
Down pressure of trike tires set so I can barely make the tires spin by grabbing and pulling up. This seems to handle best.
I tend to ride rather aggressive and in corners have been told one of the trike wheels is in the air. On slow street corners as much as 4 or so inches. Freeway not so much