The most economical upgrade to this engine is the PS 32 .......the original PS2 5 volt system is suspect for failure. Doing the PS32 upgrade also gets you away from having to deal with a battery.......Here’s a video of a PS2 5 volt Hudson that GGG (George) set up a board swap for me to PS 32 ....for my application, simple plug and play swap....now this engine is a proven performer...........Pat
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