spoke size for lunacycle 1000 watt hub?

I got this motor: https://lunacycle.com/ebike-kit-1000-watt-waterproof-connectors-hub-motor-conversion/

built into the generic 26" rim...anyone know the spoke size/length?

If you mean the spoke size it already has, you'd want to measure what's actually there.

If you are wanting to change to a different rim, you will need to determine the ERD of the new rim and get spokes for that, as the ones for the rim you have may not fit even if it is the same "size" rim.

See http://www.ebikes.ca/tools/spoke-calc.html for more info.

Trouble is, there is no generic rim ERD. The double wall tends to vary in thickness. So you will need to turn to the calculator once you know your rim size.

163mm fits the rim E-Bikekit.com uses which is 535 erd in 26".

You can look up how to measure ERD on the net.