Its time I came clean.
On every Minitrix loco that I have worked on,
there seems to have been an unwritten rule. The right hand side of the
loco is positive. The left hand side is negative and is connected to
the chassis. With this arrangement, if positive power is applied to
the right hand side of the loco, it moves forward.
Not with this loco.
It runs backwards. Normally this means that there is something that is wrong in the
assembly - the motor is upside down, the axles are put in the wrong way, the
contact plate is reversed. But not so with this model. You can't
put the motor upside down - well you can, but it won't work. If the contact plate is reversed, the
circuit board contacts don't meet up with the motor contacts. The same
thing happens if you turn the motor round. The only way I could get
this loco to run forwards if the right hand rail is positive, is if the copper electrical pickups are on the left. This
makes the chassis positive, rather than negative. It's not a problem,
you just put what I would consider the front bogey at the back and the back
bogey at the front. Problem solved.
But it breaks what I always considered as a hard and fast rule.
So - ready to fit the bogeys.|
Front is to the left, the motor brushes are
at the rear, the gear cover screws are facing us. The bogeys have
their electrical pickups on the near side (ie left) of the loco (and if you
didn't read the bit above, this is unusual).
Place the plastic gears into position in the slot in the top of the bogey