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Re: Man & pillion wiped out by rogue kookaburra (frickin typos :
Posted: Mon Jan 07, 2008 11:17 pm
by Neka79
ive hit a magpie- destroyed front guard...
mate had a bird go thru his front wheel the other day..spent 3 days trying to clean the mess..bloody bird dented (small dents) his rim!!
Re: Man & pillion wiped out by rogue kookaburra (frickin typos :
Posted: Tue Jan 08, 2008 8:50 am
by Flywheels MC
The only time being hit in the face by a bird is funny...
http://palaceofseriousness.blogspot.com ... ident.html" target="_blank
Re: Man & pillion wiped out by rogue kookaburra (frickin typos :
Posted: Tue Jan 08, 2008 9:25 am
by Strika
Marty Craggill had an almost career ending interaction with a sea bird of some sort, during a race in @ 1995/6/7. His shoulder ended up behind his head. It took surgeons months to sort him out and at one stage he had no feeling in his lower arm or hand. Apparently accupuncture was what fixed it??? But it was ugly. I am not sure of the mathematics, but one of the boffins mught know how weight and speed effect impact????
Re: Man & pillion wiped out by rogue kookaburra (frickin typos :
Posted: Tue Jan 08, 2008 1:21 pm
by Rusty
I'm no boffin, but momentum = mass x velocity
Also one should take into account the pressure of the impact, ie something small or pointy will do a lot more damage than something flat given the same momentum.
Re: Man & pillion wiped out by rogue kookaburra (frickin typos :
Posted: Tue Jan 08, 2008 2:02 pm
by Flywheels MC
Rusty wrote:I'm no boffin, but momentum = mass x velocity
Also one should take into account the pressure of the impact, ie something small or pointy will do a lot more damage than something flat given the same momentum.
Correct. P = mv, where P is measured in Newtons (Kg m/s), m in kg an v in m/s
If the bird weighed 2 kg and the rider was travelling at 54kph , the force exerted would be 30 Newtons, all delivered through whatever contact patch the bird covered. this is a hell of an impact! It would be like somebody throwing a 1kg wheat bag at your head at 30m/s .....
Re: Man & pillion wiped out by rogue kookaburra (frickin typos :
Posted: Tue Jan 08, 2008 2:17 pm
by Daisy
Flywheels MC wrote:Correct. P = mv, where P is measured in Newtons (Kg m/s), m in kg an v in m/s
If the bird weighed 2 kg and the rider was travelling at 54kph , the force exerted would be 30 Newtons, all delivered through whatever contact patch the bird covered. this is a hell of an impact! It would be like somebody throwing a 1kg wheat bag at your head at 30m/s .....
Hence my previous - somewhat flippant - question about visors and birdstrike.