08-25-2016, 02:55 PM
(08-25-2016, 02:34 PM)JaM Wrote: no worries, i know precisely how to throw a Javelin. thing is, throwing a javelin requires specific release angle, once you are past that angle, your release speed decreases, which results in inferior throw. I have read some works about javelin throws in the past, while trying to understand what distances would be possible with standing throws. Luckily, Javelin throwing is Olympic sport, which is dissected into science. you can find very detailed studies for it.. one interesting fact for those who don't know - 45 degree, which from perspective of a person with a base physic knowledge should guarantee the longest range is actually not the release angle Javelin throwers use.. angle is a bit shallower (30-35) and not greater than 40 degrees precisely due to human physiology which results in less release speed with higher angle.
Which is another reason for actually testing the overarm grip vs underarm, because measuring speed for proper javelin throw is not the same as thrusting overarm with a spear on a downward trajectory. (but of course, javelineers are able to release javelins with speed around 30-33m/s with a running throw and 800g javelin, women around 28m/s with 600g javelin)
This is actually wrong, there is no slow down after a certain angle. Not sure where you got it from. Release angle is about optimum trajectory, not highest force. I fact the whole reason Greeks used the ankle is so that they could keep accelerating the spear past the release point for the optimum trajectory angle. Ankyles and atlatls have nothing to do with lever arm extension like a sling, and everything to do with extending the time you spend in contact with the shaft accelerating it.
This is why the best release angle is less than 45 degrees- it is a trade off between keeping the contact and accelerating and the best trajectory.
