Recent content by vadslram

  1. V

    Piggot type generator, Magnets

    No opinions? I'm going to go the cheap route and get N45s 2"x 1/2" x 1/16" at $1.15 a piece. I'm also going with more windings to get the voltage at lower RPMs since I'm not living in the wind belt. I'll start carving the blades this weekend. If anyone's interested, this is where I'm basing my...
  2. V

    Solar Panel System Troubleshooting - Charging Battery

    When a poster confused the "cycle use" charging information as printed on the battery as meaning it was a motorcycle starting battery.
  3. V

    Solar Panel System Troubleshooting - Charging Battery

    It doesn't mean motor CYCLE. That is a battery that is used for UPSs and emergency lighting. The cycle count is the number of discharge/ recharge cycles that the battery can do and still keep the rated AH.
  4. V

    Piggot type generator, Magnets

    I'm back in school after decades away and taking alternative energy .. just because it was interesting. In the wind power class we talked about Hugh Piggot and the home brew HAWTs he makes and teaches. That gave me the bug to see if I can do it. I'm pretty sure I can buy a used turbine on EBay...
  5. V

    Will the complexity of modern knowledge drive human brain evolution?

    I would say we are. But with some unique drivers. Usually evolution is driven by beneficial mutations. But with all of the technology we have survival isn't the driver it used to be. Modern medicine has allowed the continuation of genes that would have been winnowed if left alone. Traits that...
  6. V

    Favorite Authors: Larry Niven, Harry Harrison and Jim Butcher

    There is a pinned thread on favorite books but do you have any authors that you would read anything they wrote, can you reread their works and get more out of it every time? For me if I stop reading and start looking at words but see the scenes in my head then that is good writing. My...
  7. V

    Body decays in a microbe-free environment?

    Entirely depends on how microbe free. The body has a lot of wee beasties in it at any time so decomp doesn't really depend on external flora. If the environment is hostile enough to microbial life the body will last a LOOOONNGG time. There are documented cases of natural mummies in the Andes...
  8. V

    Max Possible Lift With Vacuum Pump: Exploring Possibilities

    :thumbs: See I figured there were a few people here smarter than me. Does the 760 mm in 4 ft extrapolate out eqaully for mythical miles?
  9. V

    What if the moon was compressed to palm size?

    Of course he wouldn't! Acme Industries has years of experience and have saftey tested each and every anvil, rocket and gallon of tunnel creating paint. Besides Wile E. has also been taking the Acme Industries nutritional supplements to increase his bone flexibility..How else would he be able to...
  10. V

    Max Possible Lift With Vacuum Pump: Exploring Possibilities

    But if you take a 4 ft test tube and fill it with mecury so no air is left then turn it upside down it will stay to the top or will it? If it does then what little non mercury space has to be a perfect vacum. A mythically strong tube could then be ... a mile high and you still wouldn't get...
  11. V

    Max Possible Lift With Vacuum Pump: Exploring Possibilities

    I was watching them pump sewage from a broken line yesterday and got thinking. Is there a maximum possible lift? Atmospheric pressure is around 15 psi(?), 30 inHg right? What happens when you try to pull 31 inches of mercury? Then taking it to a level only mindless commutes can create. If you...
  12. V

    I can't put a 5mw laser pointer on my sharks?

    When did being an evil doctor become illegal? I just got a reply from Dealextreme that told me my green 150mw laser order was canceled because they can't ship anything more powerful then 5 mw to the united states?
  13. V

    Can a Solar Panel Effectively Recharge a Car Battery for Frequent Restarting?

    Several companies make them for cars but they are more long term trickle chargers. For what you want look at the marine industry. Sailboats usually have solar chargers of enough wattage for what you need. Your also going to need some heavy duty diodes because without them your alternator will...
  14. V

    A simple but efficient Diesel burner?

    Home heating oil furnace?! Heating oil is only a slightly different fraction of the same base and manufacturers have been working for years to make them more efficient. The combustion chamber doesn't need pressure but the fuel needs to be as finely divided as possible for complete combustion...
  15. V

    Aerodynamic phenomenon? Physics of bbs

    My bet is that the distance is about where you hop up induced back spin is defeated by air friction and without the gyro stabilization, combined with the light weight of the plastic bbs any puff of air will deflect it noticably. Depending on your bb maker a little bit of mold sprue will do...
Back
Top