homemade scoop...
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Originally Posted by dbpack' post='823521' date='Mar 21 2009, 11:14 PM
Right, but that's not what ENGINEERING is. Engineering is the application of known scientific principles, NOT trial and error. Look at it this way: A bridge is engineered. When it was decided to build the George Washington Bridge, they didn't build a bunch of bridges, testing each one until they found one that worked good. They used known scientific principles and many different engineering disciplines to design the bridge, then built it, once. They knew it would work because the design was based on math and the laws of physics. That's the difference between engineering and trial and error. If an engineer with expertise in fluid dynamics was hired to analyze RPi's scoop, I have no doubt the design would be improved, without the need for trial and error.
But like I said, the RPi scoop is a great product, and RPi is a great company dedicated to selling ONLY products that work!
But like I said, the RPi scoop is a great product, and RPi is a great company dedicated to selling ONLY products that work!
Actually, even at the very high end of bridge building, they do theorize, test, change, retest, change, retest, etc. The difference is they do it on models inside gigantic wind tunnels instead of full sized, because of cost and time restraints. Even when so pressed for time that much of the construction equipment itself is prototypes, models are made, tested, and remade (ie. Millau Viaduct). Sometimes, even the bridges themselves fail and need to be retrofitted (ie. the Millenium Bridge over the Thames River in London) at considerable cost in terms of time & money. Whatever field you're in, you theorize, test, change, retest.
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Originally Posted by NobleForums' post='824277' date='Mar 22 2009, 10:06 PM
Actually, even at the very high end of bridge building, they do theorize, test, change, retest, change, retest, etc. The difference is they do it on models inside gigantic wind tunnels instead of full sized, because of cost and time restraints. Even when so pressed for time that much of the construction equipment itself is prototypes, models are made, tested, and remade (ie. Millau Viaduct). Sometimes, even the bridges themselves fail and need to be retrofitted (ie. the Millenium Bridge over the Thames River in London) at considerable cost in terms of time & money. Whatever field you're in, you theorize, test, change, retest.
Either way, kudos to RPi for making a great product, and kudos to the DIYer's for playing around with things on their own and sharing with the community!
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Originally Posted by mchamner' post='823499' date='Mar 21 2009, 08:59 PM
Its definitely not botany (the study of plants)...LOL Im messin with ya now 
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This may have only been humorous to me since i've been doing a lot of renovation to my house lately (1930's spanish home that has been ignored for 30 years)
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Originally Posted by DRANGED' post='825157' date='Mar 24 2009, 12:41 AM
Drywall.
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Only question I have about the scoops is how do you dyno a product that needs 70 mph of wind for it to work? Did you have a ultra mega hairdryer in front of it?
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Originally Posted by Aviator' post='825653' date='Mar 24 2009, 03:14 PM
Only question I have about the scoops is how do you dyno a product that needs 70 mph of wind for it to work? Did you have a ultra mega hairdryer in front of it? :P
The best method would be to monitor the 'hot-film air mass meter.' It would detect a drop in air pressure (i.e. least resistance from intake to engine). Measuring pin 4 of X6207 would show the difference with or with out a scoop [RPI or Mud-pan].