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  • Users: chocobanana
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  1. chocobanana

    Biodegradable, non-toxic adhesive?

    Hi what I mean as water proof is that after the glue is applied, the product must remain glued even on water contact or if submerged on water for a long period of time (many hours). The base material to be used is wood. Ultimately, the objective for the glue to be biodegradable is that it...
  2. chocobanana

    Biodegradable, non-toxic adhesive?

    Greetings everybody! I would like to ask if someone knows of any glue that is strong, water-proof, bio-degradable and doen't harm in any way or the least possible the environment during its manufacture. Any tips would be much appreciated. Thanks
  3. chocobanana

    Inner Tube rubber toxicity

    Hi there everybody Can somebody please inform me if the rubber from inner tubes causes water that is in contact with it to become toxic for drinking, higiene or for agriculture irrigation? Thanks!
  4. chocobanana

    Inner Tube rubber toxicity

    Hi there everybody Can somebody please inform me if the rubber from inner tubes causes water that is in contact with it to become toxic for drinking, higiene or for agriculture irrigation? Thanks!
  5. chocobanana

    How to use FEA in bicycle design?

    Hi It's for a cruising bicycle, but I want to take into account some ocasional abuse. Thanks
  6. chocobanana

    Linux and windows

    Hi Ok, here's the links for the best (in my opinion) distributions for 64bit cpus. Bear in mind that some programs won't be available for use in 64bit (most notably the flash player) or will be harder to install, although for each of this distros there are excellent guides to help you install...
  7. chocobanana

    How to use FEA in bicycle design?

    Hi No, this isn't for a class and I don't have any measuring equipment available, that's why I think FEA might help me in the project. Still, I know that there are many bicycle companies that use FEA to develop their frames, and I just wanted to know what kind of FEA analysis they do. Thanks
  8. chocobanana

    How to use FEA in bicycle design?

    Hi I'm not sure which loads should I use. but basically we're dealing with forces coming from the wheel hubs, from the rider wheight and also lateral loads. I think that's it, correct me if I'm wrong. Also remember that a bicycle frame is subject to variable stress, kind of like a car (holes...
  9. chocobanana

    How to use FEA in bicycle design?

    Greetings I'm in the process of designing some bicycle frames and wanted to use FEA to generate better results. Thus I wanted to ask a (apparently) simple question: Which kind of FEA analysis should one do to optimize or check for stress areas in bicycle frames? Thanks a lot!
  10. chocobanana

    Low pressure water filter

    Hi there There are already 0.2micron filters for low pressure applications that are pretty cheap. For example: http://www.katadyn.ch/site/int/home/outdoor_products/our_products/endurance_series/pocket/ This pump costs about $50 and it has a porcelain filter with silver and 0.2um pore size...
  11. chocobanana

    Low pressure water filter

    Hi What I needed was something like this: http://www.sterlitech.com/products/membranes/ceramic/CeramicMembranes.htm The problem with this one is the price - $100 per unit (90mm of diameter, I need 66 or above) Thanks
  12. chocobanana

    Low pressure water filter

    Greetings Does anyone knows where can I find a water filter designed for low pressure with a very closed porosity of 0.2 micron? I'm looking for these in the form of discs or sheets for long term use. The thickness doesn't matter too much, but 4 to 6 mm would be ideal. Thanks
  13. chocobanana

    Pipe valves

    Hello and thanks for the reply Yes, that's the kind of application I'm looking for. However I'm trying to design a valve for a portable hand piston pump, so I needed some examples of valves related to this kind of application. Some diagrams or images would be nice. Thanks P.S.: Don't think...
  14. chocobanana

    Pipe valves

    Hi and thanks for your help Your link was helpful but I'm also looking for valves for low pressure piston water pumps. Thanks
  15. chocobanana

    Pipe valves

    Greetings I'm looking for information on pipe valves, more specifically, piston water pump's valves. Can anybody post some links where I can find information about this? I wanted to see some diagrams and also to know about the materials used. Thanks!

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