Recent content by michaelwoodco

That seems like a good idea, but at the moment we're more or less aiming to take a trolling motor off a store shelf and use it. I have some electric scooter motors at my disposal as well, but I don't yet know if they operate in a suitable RPM range. ---------------- Listening to: Taylor...

we would use as many magnets as we can on each wheel

Yes, we would have two "magnet wheels". I'll make them with rare earth, or neodymium magnets. The motor will spin a flywheel on the inside of the tank, and there will be a 2nd one outside the tank, which will have a shaft going off it to turn the propeller. We're not planning on going too...

Hey guys. A friend and I are planning on making a scuba diver tow device for his trip to the florida keys. We could just put a trolling motor exposed to the water, but at depth I have reason to believe water would push past the seal. So what we are hoping to do is weld up a thin wall steel...

Just using it as an example. Just picture whatever science fiction space travel device you want. Warp (bubble) drive, that black hole one (if people one day can make a black hole maybe they can shut it off) etc.

Well gravity doesn't need a medium to travel through. So in theory if we produce artificial gravity by creating a black hole in front of a space ship, and have the black hole move so the spaceship never enters the center...Oh..wait...well we'll never see any of the likes within our lifetimes...

Exactly. You can take 200g's to the head, with a Snell approved helmet for about 2 milliseconds. More force applied for more time to the head could certainly kill you, but the same force applied to your toe will only break it and at worst, with proper medical care ofcourse, you will be missing...

Someone stated earlier that if the acceleration is uniform it can be as high as anything and you wouldn't be harmed. If every piece of matter in your body is accelerated at the same rate there's no damage done. How you would achieve this I don't have any ideas off the top of my head.

I beg to lengthen your answer. A person can die so many ways from all different forces. The one thing I can think of off the top of my head is if you are wearing a very good helmet and get into a crash, the force per unit area is dispersed, and the impact is very small thanks to the collapsing...

How exactly would I calculate the energy needed for the heart to pump blood then, take into account viscosity and vein length/diameter? I'm guessing I could make a rough calculation by using average vein diameter?

I saw an example where the work of a heart was found to be 2 watts based on the height of a person and the liters of blood that it pumped throughout the day. Since we have closed circulation systems (unless we have a cut, annerism, etc. ) I thought height would not matter, and in order to...

He said if every atom in your body were accelerated that fast at the same time. So he is right. But practically no. Top fuel Drag racers for example, experience 5G's of deacceleration. Their retinas detach from their eyes after repeated races. Also TIME DOES play a huge role. I learned...

I am subscribed to a few magazines, but I saw something like this. http://en.wikipedia.org/wiki/Vibration-powered_generator I believe it was hooked up to a furnace as another way to get power from inconsistent flames but I don't remember all the details.

If you want to measure efficiency it seems a good way would be to put your engine on a brake dyno. Inertial dyno's would be useless in this case. The real world has to many variables to get foolproof results. (tail wind, slopes, weather, drafting, etc.) In theory what you would do is choose an...

Rather than get all those solar panels, wouldn't it be more economical to get heat from deep down in the Earth and use it to run steam turbines? Also there are solar pannel alternatives that use mirrors focusing the sun's light on pipes that heat water to a boil to power turbines. We can only...