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 04-05-2009, 10:56 Post: 161733
earthwrks

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 Electric Compact Equipment

DavidLevin, our Israeli friend, I have been following your many posts on the web about this and the easy-on/off tracks for loaders on other sites.

To the others here that don't know about Mr. Levin he purports to represent a major manufacturer in Israel--but won't give any details as to his involvement. (Me thinks this a teenager dreaming up ideas--IMHO, of course)

While there is some entertainment value you bring to the table, I'm highly suspicous of a. your credentials and b. your approach which at best is amaturish. Think about it: The brain-trust at your "corporation" must be empty; no self-respecting corporation would be asking the questions you ask--even in light of the boundless resources of the internet. (BTW, elctric equipment has been around in Europe for decades---BUT it's NOT rechargeable AND needs a power cord) And by that I mean you could easily google any search word and found a result.

Be that as it may, you will continue to ask inane questions and won't stop until someone tells you the answer you seek.

So here it is: Yes the world needs electric compact equipment. Knock yourself out.






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 04-05-2009, 14:40 Post: 161740
earthwrks

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 Electric Compact Equipment

Amen!






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 04-05-2009, 18:34 Post: 161751
earthwrks

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 Electric Compact Equipment

Avishay, I have a skid loader. It weighs about 8,000 lb. Its fuel consumption is rated in gallons-per-hour which is 2.9. It's rated at 78 hp.

Unlike a transportation vehicle which is rated for getting from point A to B and using that energy efficiently because of speed, machinery cannot do that. Somehwere I read a typical vehicle only needs 4 HP at each wheel to propell it at 45 MPH.

Laughing out loud, I come from a long line of prolific inventors. I remember when I was 12 or 13 I "invented" a proplusion system based on compressed air and a steam-type turbine. (Little did I know that a turbine was not like a fan) I was so proud of it. I showed the plans to an engineer-type whose first observation was: "Where does it get its compressed air?"

(I had air tanks to hold compressed air). In "my world" the turbine would power an air compressor to refill the compressed air tanks. He says "Then you have invented the first perpetual motion machine. And those don't exist".

Oh.

"Air tanks, not good enough", he said. "You'll need a big compressor mounted on a trailer to power it. And if you're gonna do that, you might as well just power the car with the engine from the compressor".

So, Avishay, this is how I see electric equipment: you'll need a big generator to constantly recharge the batteries. And if you have to do that, you might as well...

And you said thjat tracks use more power than wheels--I'm not sure about that. There are many factors that go into that pro and con. Yes it takes more power to turn a tracked vehicle that has tracks longer than the tracked width. No, it doesn't take more power to traverse sand where you have floatation. And it depends on the profile of the track too: New Holland and Komatsu excavators have what are called pavement tracks taht have curved-up side lips that make turning easier and less damaging to not only pavement but earth too.






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