1/72 Revell E Boat German PT boat of WW2

It is the system for now popular LIPO mini helichopter. 800 to 1100ma LiPO 7.4V,with one mini-motor for 1/24 car or similar,using a Graupner 20mm 3 blade-props.

what motor are you using?

I know another one in Central park New York which is much bigger.

Hong Kong Tuen mun garden model boat pool.