Quote from: FlyinBrian on June 29, 2020, 18:06:23 pmPeter
Two 1500 pack will fit where needed but a 3000 will not.
Cells are actually
2/3 AAACTUALLY 2/3 A, not AA, but I have tested the packs separately at 3A discharge and they stay above 5V until well over 1000Mah has been used so even with heavy use I should get a few flights out of them.
The two switches is just a convenience rather than make up a wiring loom.
Re Diodes and s/c - I can not remember ever having a NiMH (or NiCad ) cell go s/c and am not aware of anyone who has??
I recall ( I think ) someone called "Red" who used to work for a cell manufacturer used to write about batteries in an online forum c1998 - 2000 and he reckoned s/c was a rare form of failure - occasionally dendrites? may cause a short inside a cell but they were very tiny and the current flow from regular use cleared them. They could build up to the point of damaging the cell if the pack was idle for a long time.
Quote from: FlyinBrian on July 27, 2020, 20:15:34 pmOK, Interesting and amusing stuff so far.
no one has commented on Lithium or alternatives.
If we take heat from the ground, water, and / or the air will it not affect the winds. I suppose whatever we take out goes back in some form.
About 28 years ago I did some work in Stavanger, Norway. It was the middle of Dec and os temps were minus 16. The offices were heated with heat pumps extracting heat from the sea. They also had automated window blinds and vents so the indoor temperature could be quickly adjusted. Leading edge at the time
Quote from: firefox on July 27, 2020, 20:20:16 pmI find that my electric bill is very little with my roof panels.
Quote from: paulinfrance on July 26, 2020, 10:03:59 amFrance keeps on about going green, a load of rubbish, maybe a 200€ grant from the government for 20.000€ Worth of solar panels and buying back at 0.10€ a kilowatt hour, going abroad ( poor countries and not so poor ) I see every building with a solar hot water system on the roofs, nothing here, it's all about company's making money and taxes,,
Quote from: RobC on July 27, 2020, 11:30:11 amHow about an old fashioned water mill wheel driven by rain with vanes attached to drive it from the wind too? Feed it from the gutters, job done