Tank Gun
1.
elevation tube holder: insert 1.4mm pin to center of these two part and cement
it
Small
circle part with 1.4mm hole
is just used to align elevation tube holder center, do not cement it.
Trim here
to avoid interference when inserting elevation tube holder
Have some
Tamiya 5mm square beam, drill it with some 1.6mm hole at 10mm pitch
Drill Top
block with 2mm hole
Tap Bottom
block with 2mm*0.4 thread
Make two
Fit 0.3mm
plastic sheet on top block
Cement
top block elevation tube holder, bottom block to turret roof. Do not cement top
and bottom together.
Have two
small piece of Tamiya 3mm square beam, cement it to recoil unit, drill
1.4mm whole
Bolt it
with the screw come with servo
Link barrel
end and servo arm
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