Made out of a bicicle pump! The idea is to use the one way valve that every bicicle pump has on its piston, to improve the performance of the gun, instead of using loose pistons as usually. I know the difference may not be crucial but it's for the sake of well-design. The piston is too heavy but seems to prove the theory. At only 75psi it shoots a 0,2g 6mm plastic bb through a steel (yes, steel. This is Europe) coke can. Filled with water it pierces the can and leaves a mark on the other wall. Air leak detected, soon to be fixed. UPDATE 20150719 Air leak was fixed with teflon tape. Cannon was intended to be tested to 10bar / 145psi. At 8bar / 116psi the back bursted off the main body, propelling it against a wall, with the cannon hitting at a great speed. Result is a bent cannon. Speed doesn't seem to have decreased but precision has been seriously affected. Plans for now are to test the energy at 75psi (like this teaser shows), then cut the cannon to the unbent part (which is about half the lenght), glue the back permanently and test energy again at 75psi to see the relationship between cannon lenglt and muzzle energy. Afterwards, with the back end fully glued, repeat tests at 116psi / 8bar and hopefully get the same energy as full-lenght-cannon @ 75psi. If not, test pressure until total burst, or the desired energy achieved. Advise is greatly appreciated. Thanks for watching! A FewFriendsFace production Likeyright FFF2015 All likes reserved

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The very first America's Cup for women was a special event and especially for those competing. Laura Harding and Annie Wilmot of HardingWilmot Sailing were invited to race and talk about how special it was to be part of history. From the It's All Possible Podcast. #sailing #yachting #americascup #womenempowerment #olympicsailing

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La plongée sous-marine, c’est notre passion… mais aussi notre loisir le plus coûteux 🐠💸 Heureusement, la pêche équilibre le budget et l’aventure continue sur et sous l’eau ! [ VISITEZ NOTRE SITE WEB ] https://www.sailingatypic.com [ VISITEZ NOTRE BOUTIQUE DE VÊTEMENTS ATYPIC ] https://sailingatypic.com/collections/all [ AIRALO ] Code promo 3$ de rabais : VERONI7320 https://airalo.pxf.io/c/5786229/2071037/15608 [ SUIVEZ-NOUS ] 🔔 Facebook: http://www.facebook.com/SailingAtypic/ Instagram: https://www.instagram.com/sailing_atypic/?hl=fr YouTube: https://youtube.com/c/SailingAtypic Patreon: https://www.patreon.com/user?u=37205310

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Diving the Banda Sea - Shorts - The Forgotten Islands - Banda Sea, Indonesia. A Diving Trip with Master Liveaboard into this amazing region. We had a UW-photography workshop with Gerald Rambert. IG - https://www.instagram.com/gerald_rambert/ . I hope you'll enjoy this video! If you have any questions, please leave a comment down below. Music: https://www.storyblocks.com/audio Voiceover: https://murf.ai/text-to-speech AI Invideo (10 minutes are free!): https://invideo.io/i/pyu Join me on Instagram: Everything big - https://www.instagram.com/project_yet_unknown_all/ Everything small - https://www.instagram.com/project_yet_unknown/ Check out my pictures on ... Scopio: http://bit.ly/2OtkRLg Wirestock: https://wirestock.io/peter.jantsch

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The yellow stingray (Urobatis jamaicensis) is a species of stingray in the family Urotrygonidae, found in the tropical western Atlantic Ocean from North Carolina to Trinidad. This bottom-dwelling species inhabits sandy, muddy, or seagrass bottoms in shallow inshore waters, commonly near coral reefs. Reaching no more than 36 cm (14 in) across, the yellow stingray has a round pectoral fin disc and a short tail with a well-developed caudal fin. It has a highly variable but distinctive dorsal color pattern consisting of either light-on-dark or dark-on-light reticulations forming spots and blotches, and can rapidly change the tonality of this coloration to improve its camouflage. Relatively sedentary during the day, the yellow stingray feeds on small invertebrates and bony fishes. When hunting it may undulate its disc to uncover buried prey, or lift the front of its disc to form a "cave" attractive to shelter-seeking organisms. This species is aplacental viviparous, meaning that the developing embryos are sustained initially by yolk and later by histotroph ("uterine milk"). Females bear two litters of up to seven young per year in seagrass, following a gestation period of 5–6 months. Though innocuous towards humans, the yellow stingray can inflict a painful injury with its venomous tail spine. This species is taken as bycatch by commercial fisheries and collected for the aquarium trade; it may also be negatively affected by habitat degradation. Nevertheless, it remains common and widespread, which has led the International Union for Conservation of Nature (IUCN) to list it under Least Concern.

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