How simple would it be to generate electricity on my model steam vehicle?

I'm in the process of designing a steam powered vehicle could be tank or truck depending on how it performs with tracks. I aim to have a fully remote control tank with active flame throwers and spotlights, other additions may came later. To power the RC gear I'm happy to use battery but i would like to be able to power the spotlight which will just be LED via the engine which is going to be 4 single action pistons though i could get more (i lack the materials and tools to make a tidy double acting cylinder.) they opposed and in V formation. The size of the vehicle is gonna be roughly a foot wide, 0.5 feet tall and 2-2.5feet long. I want to know how i could do it if its possible so i know how much more i need to add to produce the electricity.
thank you.

Re-design6 years ago
You can generate electricity by adding almost any dc motor and gearing it to the right speed.

THis instructable would probably illustrate the principle to get you started.