Don’t bother to read this unless you are interested in electric power models.. .. .Had an interesting one today, flying from a bit of dry sand at low tide on the south coast. 10 kts from the sea. Planned to do a few circuits. On first overshoot when just out over the sea power faded away. Nearly managed it back to the sand. Big splash in about 6 in of water. Model OK, controls OK but no donk. Another bl**dy speed controller I thought. Wrong. Speed controller OK. Motor brushes corroded and not free to slide in under wear. Extra item of WD40 to same now added to after flight service. Bad stuff sea water. (Which reminds me that the USMC used to spray fresh water hoses into the intakes of their jets after you landed on and before you shut down.)