Somewhere at every minimoto round there is a generator that has made enemies. It roars from six in the morning, it smells like a lawnmower museum, and everybody downwind has an opinion about it. Then there is the quiet family at the end of the row running tire warmers, charging transponders, and boiling a kettle, and you barely notice them. The difference is not luck. It is equipment choices and a bit of arithmetic.
Inverter or nothing
The generator that belongs in a racing paddock is an inverter generator: quiet, clean power that will not upset the charger bricks and timing gear plugged into it, and a fuel sipping habits that fits a whole weekend on a jerrycan. The open-frame contractor generator that runs a job site does not belong at a track with kids sleeping in the next paddock over. The paddock remembers who brought the loud one. Buy quiet, or borrow quiet, or reconsider.
Do the math before you buy
No wattage numbers here, because your gear is your gear — learn the exercise instead. Every device you run has a rating on its label or its power brick; add up the things that run at the same time, and that total is the generator you need, with headroom to spare because motors and heating elements spike when they start. The surprise for most families is how modest the honest total is: warmers on a timer, a couple of chargers, a kettle at lunch. Write the list, add it up, and size the machine to the list — not to the biggest number the salesperson can justify. If the list is small enough, skip the generator entirely: a battery power station covers chargers and a kettle all weekend and makes no sound at all, and half the paddock is quietly heading that way.
Fuel discipline
Fuel discipline is safety discipline. Fuel outside, stored away from the canopy and the hot things, in proper cans, filled with the generator off and cooled. Know your machine's run time on a tank and check it on a schedule instead of waiting for it to die mid-session with warmers plugged in. And run it dry or drain it before it sits for the winter — the number of generators that refuse to start in May because of September fuel is a paddock constant.
Where you put it matters
Placement is the whole etiquette: far enough from your own canopy that fumes and noise are not yours to breathe, and far enough from your neighbours that they are not yours to apologize for. Downwind and behind, not under the awning. If you can hold a conversation standing next to it, you have chosen well; if you are shouting, so is everybody within four pit spaces of you. Quiet power is paddock manners, and paddock manners are the currency that buys you help when you are the family whose generator will not start on Sunday morning.