There is no need to test it any more than there is when someone says they have
a pertetual motion machine.
This has been discussed many times on the EVDL.
Here is one exerpt.
"
I had gotten thru college with a degree in mechanical engineering and I could
churn equations with the best of them, but did not always have a gut-level
grasp of what I was talking about when it came to electronics. I went to the
Museum of Science in Boston, where they had an exhibit in which visitors could
turn a small dynamo by hand and selectively apply that voltage to a load of one
or more light bulbs. I was really spinning away like mad on the first 100 watt
bulb when my friend abruptly added five others wired in series. All of my
rotational momentum drained away in a heartbeat.
Same principle.
Alan
-----Original Message-----
From: Bill Dube [mailto:[EMAIL PROTECTED]
Sent: Wednesday, December 06, 2006 12:34 PM
To: [EMAIL PROTECTED]
Subject: Re: Regenerative Cruising
You can't get something for nothing.
What most folks forget is that you don't just have to spin a generator, you
have to apply mechanical torque to get energy out of it. (This is subtle, but
vital point.)
Regenerative braking is what you get when you extract energy from the
spinning wheels. The car slows down quite nicely as its kinetic energy is
transformed into electrical energy and then stored as chemical energy in the
batteries.
Bill Dube'
At 10:23 AM 12/6/2006, you wrote:
>This is probably a very dumb question. I'm sorry.
>
>I was reading about power generating windmills, and it occured to me,
>what about capturing the power from the wheels of the car when it is
>just cruising. Which is to say, the power is not being applied via the
>accelerator, and the brakes aren't being applied via the brake, but the
>car has speed, and is coasting. The turning of the wheels will
>generate a current on the motor, which can then be captured in the battery.
>
>I haven't read anything about this, why is that? It seems that it'd be
>pretty simple to build a switch that charges the batteries when the
>accelerator isn't being pressed.. Perhaps the amount of energy would
>be negligible, but then, it seems, so would the weight of the device to
>capture the energy. And then, if you changed your driving habits a
>bit, I bet you could maintain the charge on the batteries for a bit
>longer. Not on the freeway for sure, but for around town driving, this
>could be ideal, coupled with regen braking.
>
>Thank you for your help..
>
>
>
>- - - - - - - - - - - - - - - - - - - - - - - -
>-
> r e d d i n g k"
paul wiley <[EMAIL PROTECTED]> wrote:
Can you give me more on that? Has someone done any testing?
Garret Maki <[EMAIL PROTECTED]> wrote: It will never be worth it, it is a net
loss of energy.
paul wiley <[EMAIL PROTECTED]> wrote: Ok, with all the chat about
regen....let me put this out there.
If instead of (or addition to) regen, one mounts a windmill generator of
sorts on the bike to generate during rides. No, No, No, i am not talking about
the impossible, just a range extender if you will.
So, if my bike gets 25 miles at 25mph, and i put on my "windmill" and get
more its worth it right?
Besides just throwing it on....How would one make the conclusion that what
power generated was worth the drag and extra weight of said contraption?
Thoughts???!!!
thanks Paul
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