Close

transmission woes

A project log for Boat Motor Gets Updated Ignition

updating a 1968, 3 cylinder, 55 hp, johnson outboard motor with junkyard parts to have crank triggered distributorless ignition.

duane-grzybDuane Grzyb 07/15/2017 at 02:180 Comments

this i never bargained for. the transmission (forward neutral reverse) is a electrically contolled hydraulic unit that has been giving me no end of grief. originally controlled by a pair if solenoids moving a hydraulic spool valve deep in the leg of the motor, multiple dissassembly procedures and bench testing resulted in the replacement of the solenoid with pushbuttons, an arduino, and a servo. now servo noise and some question regarding hydraulic pressure differences caused by various in fluid viscosity have been hampering a honest effort of tuning the ignition system effectively.

Discussions