This shows the servo in it's
un-adjusted state with the yellow gear take off the top.
Please note the ball bearing unit, which is quite a
benefit on a 16g servo.
Once the screws are taken out
the servo falls lightly apart, and this is a good stage
to try and keep all the little gears together as they are
easily lost. They are also very easy to mix up and when
reassembling you can't remember where they go.
If the servo is connected to the
receiver with a battery and the transmitter on the motor
should turn, but as the feedback pot is not attached to
the final gear the motor will spin continously. Get the
idea? Well use a small screwdriver to turn the small
screw until the motor stops spinning. Then use the
transmitter (trimming set to middle) to check that if you
move the stick the gear moves in different directions.
The screw might need a bit of adjustment but when your
happy put some superglue around the side of the yellow
gear being very carefull not to get too much on the top
or round the side, I poured the superglue in roughly then
used a pin to spread it around. It is an idea here to mop
up any superglue lying around just to be sure. The gear
might need a bit of adjustment at this stage depending on
how careful you were.
Once the glue has set the
nodules can be cut off so the final gear in the 'gearbox'
can spin freely. I used the end of a penknife to cut them
off and then the end of a screwdriver to get it
completely flat. I also made sure the final big gear span
freely on the yellow thing. I did however need to clean
round the sides and the gear itself as I had been a bit
careless with the superglue.
Before I got to this stage the
gig final gear should have a bit od plastic on it's shaft
to stop it spinning and this needs to be removed. Be
careful and use a sharp knife to chop it off and then
make sure it's nice and flat afterwards. Stick the big gear on first then remeber what sequence the rest go on (I took 2 servos apart at the same time and cross referenced them). Once all the gears are on, put the lid of the servo on and just check it works. If it does do up the screws and it's finished. If not go back through the gear step and try and see whats happening.
Well the motors have been made
and here they are with LEGO gears superglued to them.
These gears will mesh with the 'gearbox' for the leg
assembly.