Subject:
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Re: There's a reason steam engines use a flywheel...
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Newsgroups:
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lugnet.org.ca.rtltoronto
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Date:
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Tue, 24 Oct 2006 19:34:26 GMT
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Viewed:
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935 times
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On 10/24/06, Derek Raycraft wrote:
> Rob Antonishen wrote:
> > Bottom line is a flywheel is more effective when its inertia is larger
> > (mass is further from the center of rotation or mass is larger. So
> > you either need it large (diameter) and lighter or small and heavier.
> > When you say "tiny" what do you mean? I would suggest attaching two
> > train weights to a pulley, if that is not too big. Otherwise, tires
> > tend to be the heavier elements. One from 8448 or something similar.
>
> Angular momentum plays a big role in flywheel design as well. So you
> can bring velocity into it. You can add a small, light, fast flywheel,
> and a large, heavy, slow flywheel to your options.
Thanks for that addition Derek. One issue with high angular
velocities is stalling. To get the high RPM you tend to need lots of
gearing, and starting out can be a pig. Ideally, a high speed
flywheel behind a CVT should work great, but I haven't seen a high
torque CVT made from Lego (yet).
Cheers!
-Rob A>
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