David Jacques writes:
The Submarine has now been dismantled and the photographs show the various parts after cleaning. All the components had been submerged over the last one and half years. The hull had been assembled with stainless steel nuts and bolts which were easy to dismantle. The electrical control components were installed in the black box module situated in the centre of the free flood outer hull casing, this rectangular box had a flanged lid with a 60 mm diameter screwed access opening. The main components received, 2 servos, drive motor and switches had all been sealed in this unit with bathroom silicone sealant. Over the period of being submerged the lake water had accessed this module.
After cleaning the electrical components in water and soap left to dry out. The main power supply was from a sealed lead acid 12 volt 1.3 amp/hr battery which was positioned in the free flooded space in front of the main control module.
The battery was as expected completely and has been put on a very low charge.
The main drive 555 motor has been washed clean and now is working ok.
The 2 servo’s are not working the armature’s are solid.
The esc sealed unit is also not working.
The receiver is showing intermittent signals and may be recoverable.
The main battery has been recharged and is holding a full battery voltage and power.
That’s all for now still a lot to do!
My test on the RX:
The openLRS receiver is working after 18 months on the bottom of the lake.