uncleflo
Registered since September 28th, 2017
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Tag selected: propel.
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Bronze Engine Driven Clutch Pumps / Bilge Pumps / Pumps / Marine / Xylem JabscoShop - Jabsco & Rule Pumps and more - from the experts
Saved by uncleflo on February 12th, 2022.
Diesel engines need no electric supply to keep going, and usually have ample power to drive a substantial bilge pump as well as propelling the boat.Usually, there is no need to run the bilge pump continuously, so the pump is driven via an integral clutch, which allows the pulley on the pump to rotate without turning the pump itself. Fitted with a manual clutch, the pump is engaged by an attached lever. With an electromagnetic clutch using the boat's 12 or 24 volt D.C. electric supply, the pump can be operated remotely, usually from the helm. JABSCO manual and electromagnetic clutch pumps are powerful engine-driven units. These tough and fully-serviceable belt-driven pumps will self-prime rapidly and work continuously over a wide engine speed range. Installed in innumerable fishing boats and other workboats of all kinds, JABSCO clutch pumps are also popular in larger leisure vessels. - No Jabsco pump should be used for petrol, solvents or any liquid with a flash point below 37oC( 98oF)
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RP2040 Launches Rocket Flight Computer | Tom's Hardware
Saved by uncleflo on January 27th, 2022.
Putting Raspberry Pi boards into space is nothing new, but the method of achieving orbit often differs. While the Astro Pi computers headed for the final frontier onboard a SpaceX Falcon 9 rocket, there are some decidedly lower-tech approaches including, as detailed on the Tindie blog, this $45 RP2040 flight computer from Finnish designer Dan Invents. Combining the RP2040 controller with an altimeter, accelerometer, temperature sensor, and enough juice to power two servo motors (for parachute deployment on the way down), the Rockit (rocket operation computing kit) weighs just 0.18oz (5g) and measures 1.73 x 0.9 x 0.35 inches (44 x 22 x 9 mm). It comes with an open-source firmware pre-installed, and can be tinkered with and updated over micro USB. There's a 16-position rotary switch for adjusting parameters such as start and end positions for the servos, and also a buzzer, so you can more easily find your rocket after a successful landing. Compared to the 2MHz Apollo guidance computer that deposited Neil Armstrong on the Moon, the RP2040 is a powerhouse, and should be more than capable of altitude-based parachute opening and logging flight data from the sensors to a micro SD card. The kit, which costs $44.99, comes with just the board and its pin headers - you need to supply your own battery, servos, cabling, micro SD card and space suit.
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The Enthusiasts Guide to Pulsejet Engines
Saved by uncleflo on March 28th, 2014.
Welcome to the website and download center for those who have requested The Enthusiast's Guide to Pulsejet Engines book or CDROM. From here you can download the book and many support files from the CD along with updates that have been subsiquently been published. If you ordered the CD, you should have received your login ID and Password already and this will give you access to the key parts of this website.
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