I can't really think of a reason why the piston returns to the original position!! any ideas?? I made a transparent QEV coaxial cannon out of the preform of a bottle. This was inspired by a Nighthawkinlight's project, although I added a transparent barrel and had to make everything work with a wooden piston and o-ring seal. The breech seal is just a piece of rubber from the inner tube of a bike tire. Thanks for watching!

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Motor boat - Både sælges, Maxima 720 Retro, 2023 DKK 375.000 Scanboat https://www.scanboat.com/en/boat-market/boats/motor-boat-maxima-720-retro-17467616

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We have been struggling to sort out the battery power for the electric motor as part of our fully electric boat refit. Except for diesel heating for a British winter, we are going to be Fossil Fuel free. These Lithium (LiFePO4) batteries from Fogstar are the game changer for us. They are the Drift PRO 24V 280Ah LiFePO4 Leisure Battery (Gen2), a new product release that gives us 24Volt, 285Ah and able to deliver 300A. With four of them, we can provide our electric motor with the 48V and 600A it needs. This is an essential step towards finishing our huge refit so we can launch our 1977 Rival 38 Centre Cockpit ketch ASAP. Disclaimer: We are Brand Ambassadors for Fogstar and can earn commission from referrals and get a discount. They do not have any editorial input or approval. We reached out to them because they were highly recommended by friends and because of the unique set of features that made these by far the best solution we could find for our needs. We have a frequently updated blog at https://sustainablesailing.net with membership options and a weekly newsletter at £2 per month for Early Bird Supporters. Our free Sustainable Sailing book is at: https://sustainablesailing.codeberg.page/ Or visit our shop at https://sustainablesailing.teemill.com/ for great hoodies, t-shirts and bags. When we bought Vida in August 2019 she was in a very tired and damp condition with all original equipment and fittings (much of it not working). We have removed all the gas, diesel and paraffin equipment, and are installing all-electric (motor, cooking etc). More details on our blog at https://sustainablesailing.net/ Socials: Facebook: https://www.facebook.com/SustainSailing Mastodon: https://mas.to/@SustainableSailing

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After 10 years in the sport, skydiving has completely changed my life. In this video, I share what it’s like to be a professional skydiver and tandem instructor with over a decade of experience jumping out of airplanes. We cover everything from high-speed freefly skydives to what makes tandem skydiving so rewarding. You’ll also get a behind-the-scenes look at daily dropzone life, including a fun (and very real) parachute packing race with my buddy Ben. Whether you're into skydiving, aviation, extreme sports, or just curious about what it's like to fall from 13,000 feet, there’s something here for you. 🎥 In This Video: – 10 years of skydiving experience – How skydiving changed my life – Tandem skydives and first-time jump reactions – Freefly and belly jumps with friends – Parachute packing race (can you pack faster?) – The joy of introducing new people to the sky – Flying, freefall, and everything in between Whether you're a licensed skydiver, student jumper, private pilot, aerobatics enthusiast, or just dream of flying, I hope this video inspires you to chase the sky. 📍 Filmed at: Skydive Midwest - https://skydivemidwest.com/ 🪂 Gear used: Vector V300 Micron - PD Valkyrie 71 - Kua Sky https://www.kuasky.com/ 📢 Don’t forget to like, comment, and subscribe for more skydiving videos, aviation adventures, and behind-the-scenes life as a skydiver and pilot. #Skydiving #TandemSkydive #Freefly #SkydiverLife #ParachutePacking #AviationVlog #ExtremeSports #PilotVlog #SkyAdventure #BaseJumping #Wingsuit #DropzoneLife #FlyingHigh #GeneralAviation #AdrenalineRush

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