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>> Only problem is... what sort of clutch do you use to enguage a gear if
>> a beam is rotating above a certain speed? ._.
>
> There are several options to choose from. First one that comes into my
> mind is to have some weights (small ball bearings) that move outwards
> from the rotation axis as speed increases due to the centripetal force.
> This linear motion outwards can be used to engage a clutch between two
> other shafts. Similar concept is used to govern the speed on some engines:
>
> http://en.wikipedia.org/wiki/Centrifugal_governor
>
> Another option (simpler but not as long lasting) could be to have a
> simple frictional contact with another shaft that is constrained to
> rotate by a torsional spring. As the input shaft speeds up the 2nd
> shaft will reach some static equilibrium position, again this could be
> used to move another clutch that connects two different shafts.
Yeah, this sounds like the two options I came up with.
I was wondering if something like the "Bendix drive" used in a starter
motor might work, but looking at how it operates, it seems unsuitable.
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