I'll be bringing five 2 1/2# bottles of N2O with me, and maybe the motor will hold together long enough this year for me to have to refill them and make some more runs.
I don't remember seeing a mother Nitrous bottle at Rick Gold's ERC trailer -- but lotsa racers have large bottles in their pits. Are any of us aware of who will willingly sell/fill bottles for other racers? Pumped filling would be nice, but I guess I could bring an extra cooler and fill it with ice and empty bottles. I do carry a small digital electronic-al scale for weighing 'em...