Throwing and construction mistakes

The boomerang flies straight forward:

  • A right-hander threw a boomerang for left-handers or vice versa.
  • The profiled side of the boomerang did not face the thrower.
  • You threw much too lightly.
  • The angle to the wind coming towards you was not heeded; in this case the wind was coming from behind.
  • The boomerang has a very negative bend.
  • The boomerang has nearly no profile which is the matter with some purchased boomerangs.
  • The boomerang is too heavy.
  • The boomerang does not get enough lift.
  • The boomerang is a not returning boomerang, i. e. a boomerang for hunting.
The rotation of the boomerang constantly gets weaker:
  • The boomerang did not get enough rotation when it was thrown.
  • The boomerang lacks profile or the profile is made too blunt.
  • The surface is much too rough.
  • The boomerang has too many holes or brake flaps.
The boomerang flies parallel to the ground, then descends steeply and crashes down uncontrollably:
  • With most throwings the reason is sickle throwing!
  • The angle of inclination was nearly 90, it should be approx. 20.
  • The boomerang may be totally warped. Normally, both the wing endings and the rest of the boomerang should lie flatly, e. g. on a table board.
  • Arm 1 gets too much lift.
  • The shape of the boomerang gets its average maximum lift far in front of its center of gravity.
The flight line is circular, but the boomerang grounds on its way:
  • Thrown to weakly!
  • The angle to the horizon is too wide.
  • The angle of inclination is too small or even negative.
  • One or more wings have a negative horizontal bend.
  • The shape of the boomerang gets average maximum lift right above or behind its center of gravity.
  • With multiwinged boomerangs the whole in the center is too big.
The boomerang lands too far to the right of the thrower:
  • The angle to the wind coming towards you is too wide/ with the left-hander too small. (it was thrown "into the wind" / "away from the wind".)
The boomerang lands too far to the left of the thrower:
  • The angle to the wind coming towards you is too small/ with the left-hander too wide. (it was thrown "away from the wind" / "into the wind".)
The boomerang lands too far in front of the thrower:
  • Angle of inclination was too small.
  • Arm 2 does not get enough lift.
  • The multiwinged boomerang does not get enough lift.
  • Check the wind direction.
  • There is no wind at all!!!
  • The boomerang needs to get more wind.
The boomerang lands too far behind the thrower:
  • Angle of inclination was too wide.
  • Arm 1 does not get enough lift.
  • The multiwinged boomerang gets too much lift .
  • Check the wind direction.
  • The wind is too strong.
In the first half of the flight line, the boomerang descends, but then crashes down in the second half:
  • The angle to the horizon is too wide.
In the first half of the flight line, the boomerang flies close to the ground, but then rises steeply in the second half:
  • The angle to the horizon is too small.
The boomerang does not fly horizontally and even rotates in the wrong direction:
  • Arm 2 gets too much lift when compared to arm 1. 
    (Sometimes caused by the shape of the boomerang, i. e. when arm 2 is bigger, wider and thicker than arm 1.)
  • Shape of boomerang gets average maximum lift behind its center of gravity.
  • Boomerang is warped.
The flight line of the boomerang resembles an "S" in the final flying phase (compare to preceding point):
  • Arm 1 gets too much lift when compared to arm 2.
  • Boomerang shape gets average maximum lift too far in front of its center of gravity.
  • Boomerang is warped.
The boomerang performs a circular flight line, keeps standing still above the thrower and falls down in direction to the center point of the flight line:
  • Angle of inclination is too wide
  • Thrown too hard.
  • Arm 2 gets not enough lift.
  • Make profile at the front edge blunter.
The boomerang makes some additional loops in the final phase:
  • Thrown too hard!
  • Boomerang does not have enough air resistance.
Advanced throwers use the "mistakes" described above usually to profit from their effects within a special situation (e. g. competition).

What is called a "mistake" by us is therefore a subjective term and depends on whether a particular throw is successful or not for each individual person.