10
When the stroke has been selected and the pin is in the correct position tighten the screw just
a bit. Twist the screw driver and the Eccentric pin back and forth to make sure that the screw
seats on a flat part of the Eccenter pin. There is one flat part for each stroke position as you
can see on the cut through section of the Eccenter below. Do not over tighten the screw.
Note: the Dragonfly machine naturally stops in the upper position with needles retracted in
the tip when the Stay up spring
is present. The X2 version is slightly different than the
previous Dragonfly. When set with short stroke there is no difference, the stroke goes all the
way up when the motor is not running. For the standard 3.7mm the stroke stops 0.5mm before
the top position and the long stroke 4.5mm stops 0.9mm from the top position when the motor
is not running. This is due the damper in the cap. When the motor is running the stroke will
pass this position and take advantage of the whole stroke length. This should be accounted for
when setting up the needle in the tip. The pictures below shows the upper positions with
different stroke length settings.
Upper stop positions
2.6mm
3.7mm
4.5mm