Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

Hi Chuck...i'm with you...i really like the 3.7 volt 18650 rechargeable li-ion battery idea ! ...Fresh off the charger at 4.2 volts should really pep up the sparkplug juice !! ...btw...that little black, 2 wire timing sensor near the magnet timing disk is a simple magnetic reed switch...not like the earlier blue engine's electronic 3 color wire hall device...the 2 plain black color wire leads is the tipoff...still the M90 newbie,...tom.