I am part of a humanitarian group which is designing an irrigation pump for farmers in Malawi. The pump itself is powered by an individual pedaling a bicycle, where an additional chain is connected from the rear bicycle gears to a gear around a shaft (a few feet behind the pump). The shaft...
I am having difficulty finding a fiber optic cable for a test which has the following requirements:
- Works to a depth of 250 feet
- Has a tension test strength of 20lb or more
- Singe-mode, single-strand
- 1.5 mm Diameter or less
- 5-10 km length
If anyone knows any distributors or...
I need a small buoyancy control device which can fit into a 4 inch diameter cylinder. Once dropping the cylinder into the ocean, it needs to achieve nuetral buoyancy at a depth between 50-250 feet, stay there for some period of time (anything over a few minutes would work) and then come back to...
I have a 6" diameter HDPE tube, which needs to be shortend, via cutting out a section of it, then reattached back together. The tube is the middle portion of a large spool. I know HDPE is a difficult plastic to glue, and I am only able to find one adhesive that claims works on HDPE, called...
