Subject:
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Re: lego Technic "class"
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Newsgroups:
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lugnet.edu, lugnet.technic
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Date:
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Fri, 29 Oct 1999 18:42:24 GMT
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Viewed:
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276 times
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In lugnet.edu, Todd Lehman writes:
> In lugnet.edu, Kevin Wilson <70641.507@compuserve.com> writes:
> > [...]
> > Anyone got good ideas on how to do things like introduce different ways
> > of driving a vehicle from a motor? Anyone else doing this? I'm having as
> > much fun with it as they are <g>.
>
> Last week I built a little non-robot vehicle using four of the new
> internally geared-down Technic 9v motors. Two of the motors were connected
> directly to the wheels, the other two motors served as human-cranked
> generators to power the motors on the vehicle. The reason I used four
> motors (two pairs) instead of two motors (one pair) was so that I could run
> each of the wheels different directions, so that the vehicle could pivot in
> place and turn.
I had a chance to play with Todd's creation for awhile. It was really cool!
(The best part was the 20-foot control tether that he made so that it could be
operated from a balcony high above.)
I thought the controller was cool too -- to get the nonrobot to turn, you had
to do this funky figure-eight thing with your fingers... It took a little
practice, but once you got the hang of it, you could really crank that thing
all over the place!
Look Ma, no batteries!
> Anyway, a really fun experiment that kids and adults alike seem to enjoy is
> simply to hook two 9v motors together with a regular connector. Then turn
> one motor and watch the other one turn in perfect a mimic. It's really
> amazing how energy-efficient the LEGO motors are.
>
> Jin Sato did something even neater yet -- he made a little walker vehicle
> using two motors -- one as a generator, the other as a motor. The feet were
> the "claws" (opened wide) from an Aquazone set such as 6109 Sea Creeper:
>
> http://www.lugnet.com/pause/search/?query=6109
>
> The mechanism worked magically -- you turned the generator motor back and
> forth, back and forth, like a washing machine, and the walker took little
> steps. I think kids would love seeing something like that.
There are some electric trains that brake by using their motors as
generators. The motion of the train is used to generate electricity that is
stored in capacitors or batteries (same thing). The energy is then recycled
to help get the train moving again.
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Message is in Reply To:
 | | Re: lego Technic "class"
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| (...) Last week I built a little non-robot vehicle using four of the new internally geared-down Technic 9v motors. Two of the motors were connected directly to the wheels, the other two motors served as human-cranked generators to power the motors (...) (25 years ago, 29-Oct-99, to lugnet.edu, lugnet.technic)
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