Why don't they put wind generators on electric cars seems as they would more than power the car.
http://www.youtube.com/watch?v=raLgNo0jhys
Looks like you have the same idea as this guy. Wait and see the wind power near the end of the video.
Cool vid but he only used the wind power sitting still if he had turbines mounted on the car at 60 mph they would generate a lot of juice it wouldnt matter if it was cloudy or dark.
I would think after a certain speed the electric motor could be switched off the batteries and run on the wind generators and get some high speeds 70 to 80 mph easy.
A motorcycle would make a good prototype made like a jet engine.
Quote from: Dave45 on September 12, 2008, 09:16:34 PM
Why don't they put wind generators on electric cars seems as they would more than power the car.
Zje wind forces that will also stop the car are higher than the
porces tat you can "earn" from the genarator-mill.
That say. you have losses !
You need nore motor power to receive INPUT in the generator
so that you becoumes "somes" output from tham. that is never
more the the forces you need to receive the "wind".
GP
Quote from: ResinRat2 on September 12, 2008, 10:10:22 PM
http://www.youtube.com/watch?v=raLgNo0jhys
Looks like you have the same idea as this guy. Wait and see the wind power near the end of the video.
Really good Video!, nice to see someone in the Uk doing electric conversions.
I think this is what you're looking for. No details on if he has to top up the batteries from other sources. I'd suspect he'd have to.
http://www.youtube.com/watch?v=bkcn8ZkvKKc&feature=related
-Steve
http://rimstar.org
http://www.gizmag.com/the-first-race-for-wind-powered-vehicles/9953/
Quote from: tbird on September 13, 2008, 10:10:03 AM
http://www.gizmag.com/the-first-race-for-wind-powered-vehicles/9953/
that is not an wind powerd car.
an air-palne ist also not wind powerded.
als thsi are mot driven objects.
an sailimg boat is wind powered
------
so my thread is to (miss) understand.
if you will use the wind on an normal driven car
with adaping an wind-wheel on in to reveive
additional electic energy.
Sorry, my missunderstanding
GP
opps!!
hi gp,
not sure what you where saying, but one requirement for the race was to be able to go directly into the wind powered only by that wind. you could have a storage device, but it had to be empty at the start.
tom (tbird)
Quote from: pese on September 13, 2008, 04:50:41 PM
that is not an wind powerd car.
an air-palne ist also not wind powerded.
als thsi are mot driven objects.
an sailimg boat is wind powered
Actually GP, I think the ones on above link don't have motors. I can see why you might have thought they did though. Normally this type of vehicle has a sail:
http://en.wikipedia.org/wiki/Land_sailing
That's the first time I've seen one with propellers.
Quote from: pese on September 13, 2008, 04:50:41 PM
so my thread is to (miss) understand.
if you will use the wind on an normal driven car
with adaping an wind-wheel on in to reveive
additional electic energy.
Sorry, my missunderstanding
GP
I had the same understanding as you. I guess Dave45 will have to clarify if he meant to use existing wind to power the car or if he meant to use the wind generated by the motion of the car to power the car.
-Steve
http://rimstar.org
Quote from: Dave45 on September 12, 2008, 09:16:34 PM
Why don't they put wind generators on electric cars seems as they would more than power the car.
You cant be serious?
The wind resistance from the wind generator would have a diminishing return. IE it takes much more wind to generate the force to move the car that speed. This is why cars get better gas mileage at 50 than they do at 80. The wind resistance eats it.
hakware,
QuoteThe wind resistance from the wind generator would have a diminishing return. IE it takes much more wind to generate the force to move the car that speed. This is why cars get better gas mileage at 50 than they do at 80. The wind resistance eats it.
That is true based on the automobile designs we now have but they could be designed better to use the winds exit as a push to help offset the resistance that is created. Wind generators could be placed in channels that are designed to help offset the resistance and they may not add any more resistance then a design that does not utilize the winds exit as a push but then we would have to see which is more efficient, the winds exit as a push or the power that the wind generator produces. The concepts do make for some interesting experiments.
We must remember that we can never create more energy then the energy used unless we are using energy to release energy that is stored in a substance and or magnetic field that contains more energy then the energy used.
Quote from: hakware on October 11, 2008, 11:17:20 PM
You cant be serious?
The wind resistance from the wind generator would have a diminishing return. IE it takes much more wind to generate the force to move the car that speed. This is why cars get better gas mileage at 50 than they do at 80. The wind resistance eats it.
you can't be serious?
i wouldn't say it's just the wind resistance. gearing has a lot to do with it.
here's what happens when you actually build...
http://www.youtube.com/watch?v=NOSFpnbnGjY
WilbyInebriated, that was a good find and I want to thank you for posting the link to it.
Quote from: Steven Dufresne on September 13, 2008, 09:39:23 AM
I think this is what you're looking for. No details on if he has to top up the batteries from other sources. I'd suspect he'd have to.
http://www.youtube.com/watch?v=bkcn8ZkvKKc&feature=related
-Steve
http://rimstar.org
It would seem that any electricity generated via the cars movement and then used to move the car is a losing game due to friction/energy/heat loss, so says the first law of thermodynamics.
Now if the electricity was generated not by the movement of the car but rather an external source of wind energy...say a head wind of ten miles an hour, you may get enough energy generated to defeat the friction of the ten mile an hour head wind...but I doubt it has all those blades turning is a tremendous drag which look to be interrupting any smooth low friction surface original designed into the car. I'm afraid this thing has no viable workability outside of a cartoon. But then, that's what my parents said about me.
Better to have a wind generator at home which charges an extremely arrow-dynamic low friction electric vehicle. Though I must say I like the little van in the video Lakes posted. Seems a nice platform for experimentation and bopping about town.
Actually my feelings are that the way too go green right now is home made wind-turbines and solar hot water heating. Both very low tech and inexpensive, and efficient. We get too easily caught up in the fancy-dance stuff.
james
JamesThomas, wind generators designed in electric powered cars may help add efficiency if designed properly, I too doubt they could be used as a main power source but I believe they may be able to help prolong the main sources life.
It would make for a very interesting experiment as well as a interesting prototype.
In that case... expanding the concept from propellers, there are Theo Jansen's wind driven walking machines:
http://www.ted.com/index.php/talks/theo_jansen_creates_new_creatures.html
-Steve
http://rimstar.org
Steven Dufresne, that was a good one. LOL
YOU COULD USE WIND POWER TO POWER A CAR IF YOU DID NOT GO INTO THE WIND BUT CUT CROSS IT THE CROSSWINDS PROVIDE THE POWER TO MOVE IT PERPENDICULAR TO THE WIND CAUSE THERE IS NO WIND RESISTANCE THERE
YOU COULD ONLY GO A PERCENTAGE OF THE WIND SPEED BUT WOULD BE BETTER THAN A SAIL CAUSE YOU COULD USE A LITTLE STORED UP JUICE FOR WHEN THE WIND WAS NOT SO STRONG.
COOL LINK
Steven !!
Steven,
if you mean it is not possible to go into the wind, you must have missed this link
http://www.gizmag.com/the-first-race-for-wind-powered-vehicles/9953/
also your comment "THERE IS NO WIND RESISTANCE THERE" is not true. trying to stay simple, wind resistance is anything that disrupts the smooth flow of wind. thus the side of your car being driven 90 degrees to the wind would present resistance.
if you are in your car stopped, you feel the true wind from the direction it is coming from. when you take off, you create wind too. now the wind you feel is called apparent wind. the faster you go, the more the direction moves to head on. if when you started you were facing downwind and its strength was 20mph, you would feel no wind when your speed reached 20mph. as you go faster, you will start to feel the wind again (now in your face instead of on your back). if you started off facing into that 20mph wind, by the time you reached 20mph on your speedometer, you would feel a 40mph apparent wind. that's why airplanes take off and land into the wind. they can be going slower and still provide lift.
this same lift is what moves sailboats. the sails are just vertical wings instead of horizontal (giving horizontal lift [thrust] instead of vertical lift). most can sail to within 45 degrees of the true wind (angle of attack). closer than that, the angle doesn't provide enough lift to overcome the resistance (wind and water). that's why the cars in the race use a mechanical drive. you'll notice they all have minimum surface area (looking at it head on) and very little road surface contact.
as you can see from this reply, it's hard to keep it simple. as my teacher told me at graduation, "we learn more and more about less and less" .
tom
ok, looks like i need to put a description in front of the video link to avoid YELLING from the cheap seats. yeah, that means you pyrodin, you must have missed two links...
click here http://www.youtube.com/watch?v=NOSFpnbnGjY to watch a video clip of a vehicle moving directly INTO A HEADWIND, powered only by that headwind.
@ tbird
I'm not Steven Dufresne, I was just sayin it was a cool link..
i know, there is still resistance, i shuold have said less resistance...
i typed that way to quick
@WilbyInebriated
... sorry i didnt mean to yell, i just always type in caps and i forget to turn it off
I can see how a wind powered machine can move into the wind( energy in, is energy in, no mater where you use it)
i was thinkin along these lines (see pic)
i apologise for the incorrect statements didnt think about it long enough.....
ill try to keep my incorrect typing to myself ;)
(pyrodin-lights cigar in cheap seats)
(everyone else- booo)
(pyrodin-what? No smoking either!!)