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Old 7th January 2018, 09:11 AM   #1
chiefheadknocker
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Default Unusual notches on very old boomerang

just recently acquired this old boomerang which was collected from Australia in the 1920s and was known to be an old one then , what I cant figure out is why it has notches/tally marks cut out on one side , I don't think this is a fighting boomerang , maybe they were to represent important ceremonies ?
any info would be very welcome
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Last edited by chiefheadknocker; 7th January 2018 at 07:11 PM. Reason: extra pic
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Old 7th January 2018, 09:39 AM   #2
Robert
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Could these possibly be tally-marks used to keep count of animals taken when using this particular piece for hunting?

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Old 7th January 2018, 09:56 AM   #3
chiefheadknocker
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Quote:
Originally Posted by Robert
Could these possibly be tally-marks used to keep count of animals taken when using this particular piece for hunting?

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Robert
hi Robert , yes I did wonder this , but then I thought a boomerang of this age would of maybe taken more animals than this , I'm not sure ,difficult to know , I havnt seen any other boomerangs with similar marks ,
thanks for your reply
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Old 7th January 2018, 12:07 PM   #4
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Nice stone (?) carved boomerang! Sorry can't be from help by your question.
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Old 7th January 2018, 06:32 PM   #5
Battara
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Could they be for aerodynamic speed and lift?
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Old 8th January 2018, 05:13 PM   #6
Bob A
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Vortex generators are often used on the leading edge of aircraft wings to permit the wing to operate efficiently at low speeds. If these notches have a similar effect, it would keep the boomerang flying at lower rotational speeds, presumably.

Vortex generator:
https://en.wikipedia.org/wiki/Vortex_generator
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Old 9th January 2018, 08:02 AM   #7
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Quote:
Originally Posted by Battara
Could they be for aerodynamic speed and lift?

I dont think so, because the notches are on the trailing edge, not on the leading edge.

I simply think, the notches are either a kind of simple decoration or (better idea) made for more grip during the throw.


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