High-speed filming of bow shots

[Duss]

You certainly have seen some high-speed films of bow shots. They usually are made in "ideal" situations. Excellent archer and perfectly tuned bow and arrows. The idea being of showing the beautiful "archer's paradox".

For example the "HighSpeedMovie" link in http://www.ide-teknik.com/eindex.htm or the videos by Beiter here http://www.wernerbeiter.com/en/produ...deos/video.php

Fine! Excellent and beautiful!

What I would like to find would be similar high-speed movies or photographic sequences showing how an arrow actually exits the bow system in the following situations:

- arrows too stiff
- arrows too weak
- arrows well-tuned but the front node is way back of the arrow rest
- arrows well-tuned but the front node is way front of the arrow rest
- etc

Any of you have such "gems"

[N.Vodden]

gordon benett!!

and that much wobble is ideal?

dread to think what mine are like you can see them like that in flight all the way to the target! without the aid of a high speed camera, and my eyesight's terrible :!

[Duss]

Perhaps some people SHOULD not look at their arrows exiting their bows...

The point of my asking is that I would like to determine how much all the factors like "spine-berger" tuning and nodal point position may affect the behaviour of an arrow exiting the bow system. If the arrow touches something on its way out, then it certainly affects grouping.

[joetapley]

One of the Beiter "way to the centre" sequences compares the behaviour of a correct arrow being shot with the behaviour of a weak arrow. You can just about see the arrow rotating and swerving away. Best part of the video imo.

The Iris centre and others these days use HS video for tuning. They must have hours of such material.

[BowSurfer]

I guess that you would want a 'mechanical archer' using a releaase aid in order to isolate the effects of the arrows from the effects of the archer and the loose - plus a high speed camera of course. You might be able to do a cheaper approach by using the technique from 'Wimbledon' where they used an array of separate cameras triggered in sequence. You could use simple 25fps video cameras using external synchronization from clocks that were slightly phase shifted so that they were triggered in sequence on each frame - you would have to check that individual exposure times were reasonably short, but that should be possible given enough light.

[Duss]

Thank you Bowsurfer, but the number of cameras would hamper my budget and clutter the club's area

The fact is that I would need at least a few thousand pictures per second

[BowSurfer]

A few thousand for the whole setup certainly, but that is compared to tens of thousands for proper highspeed cameras. Sounds like a job for a research Council grant to me!