>The anti-rollbacks are probably similar to what is on S:ROS at SFDL.
>There are magnets that keep the teeth from engaging while the train is
>moving (Iain can explain this in detail).
I doubt it's the same system as on SRoS. SRoS's sawtooth has a vertical fin
running parallel with it over which a semicircular saddle wraps around -
lined with circumferal rare-earth magnets (I had the chance to look under
one of the trains when that extra car was there in the first few weeks of
operation). That "drags" as the train goes up forwards - lifting the dogs.
If the train slows down, stops, or reverses, the dogs either fall or jam
back down onto the sawtooth.
MF's system doesn't have a reaction fin. I don't know what material the I
beams that the sled runs in are made of - and as such I can't predict wether
or not there's going to be a linear electrodynamic retarder attached to that
to lift the antirollbacks. It is worth noting that the squares cut into the
I beams are out of phase - that is, they are not directly lined up. You can
see this in Jeff Jone's pictures.
If they're going to do a silent system, I'm kind of imagining something like
the MACK mouse at PCWo uses (I don't know if the other mice use it - I
didn't look close enough at BGW when I rode theirs) - that is, a small wheel
attached on the same pivot as the antirollback dog itself, and it's got some
sort of slipping clutch attached. When the train rolls forward, the wheel
engages with a beam running parallel to the sawtooth. This lifts the dog. If
the car moves backwards, the wheel turns backwards and lowers the dog onto
the sawtooth. Car stops.
>As far as the evacuation
>system, there will be a "car" on a set of tracks parallel to the coaster
>tracks on the lift hill. It will be used to shuttle people down, a few
>at a time, in an emergency. I suggested they use a Super Fun Slide as an
>evacuation system, but they wouldn't listen! :-)
Oh? So it's just one car? Ok, I didn't remember hearing how that was set up.
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