Hi I have just read your post about your tug, I am one of those who modified mine to two new motor
A. Because the original gear box nylon pinion gears split and there was no way that one could get them to fix securely back on to the motor
shaft, plus the fact that when initially refitted they would no longer mesh and if the motor
s stopped at the wrong point they would not restart they just jammed.
B. I wanted
to make the tug more manoeuvrable so fitted separate speed controller
s to each motor
enabling me to run one motor
forward and one in reverse this with suitable rudder
positioning allows the tug to rotate on its axis with very little forward or reverse motion.
C. I was able to use a 6v 4Ah Gel type battery
which gives a much greater runtime.
As to the old gearbox
I think that because the gears were split it was disposed of. Somewhere in my harbour here there should be some photo’s of the conversion. I am now using speed 300 motor
s with a 2.5:1 reduction position much further forward in the hull an I made extension shafts to the original fitted ones, and it all works.
Hope this helps and perhaps explained the need to change the original setup. Graham