MF lift......No Sound?!

MF lift......No Sound?!

Post by James Morela » Mon, 06 Mar 2000 04:00:00


Bryan Edwards tried to explain that the anti- rollbacks lift up off the
track, at least until there is some kind of problem, when they snap back
into action!

A perfectly quiet lift!??  I can't wait to hear only the Lake Erie winds
as I climb to 310 ft!

He also commented about there being no emergency stairs along side the
lift.....something about an evacuation car that could run parallel to
the lift?  How the heck would that work?  Almost sounds like a ride in
and of itself!

Could someone who has a little more knowledge about this fill me (us)
in?

See you at Coastermania! (if not sooner)

Jim

 
 
 

MF lift......No Sound?!

Post by Iain Hendr » Mon, 06 Mar 2000 04:00:00

Quote:

>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.

Quote:
>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.
Neat.

    Iain
--
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MF lift......No Sound?!

Post by Dave Althoff » Mon, 06 Mar 2000 04:00:00

On my web page, on the patents page, there is a deep-link to the Intamin
patent for the anti-rollback system Iain described in an earlier post.
The patent has a ridiculous name, though, something like "roller coaster,
monorail or the like".  Anyway, I think it is the last one in the list of
patents at the bottom of the page:

http://capital2.capital.edu/admin-staff/dalthoff

As for Millennium Force...
Remember, we have a lift pusher in this case. Remember also that the
pusher is being *pulled* up the lift by a wire rope.  It seems to me that
the most obvious way to do a silent anti-rollback would be to do something
like we see on elevators:  the lifting rope pulls a hinged assembly which
pulls the lift pusher.  The hinged assembly has attached to it the
anti-rollback dogs.  So long as the lifting rope is under tension, either
for lifting or for lowering, the anti-rollback pawls are retracted.  If
that tension is lost, the anti-rollback drops into position to catch on
the lift track.  A similar safety means could be used on the train
itself...an anti-rollback pushed clear of the track by the lift pusher itself.

I don't know if this is what they're doing for Millennium Force or not,
but it is a possibility.

--Dave Althoff, Jr.
--
    /^\        _       _               _*** Closed for the season ***
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MF lift......No Sound?!

Post by Christian Luch » Tue, 07 Mar 2000 04:00:00

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). 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! :-)

Chris.

Quote:

> Bryan Edwards tried to explain that the anti- rollbacks lift up off the
> track, at least until there is some kind of problem, when they snap back
> into action!

> A perfectly quiet lift!??  I can't wait to hear only the Lake Erie winds
> as I climb to 310 ft!

> He also commented about there being no emergency stairs along side the
> lift.....something about an evacuation car that could run parallel to
> the lift?  How the heck would that work?  Almost sounds like a ride in
> and of itself!

> Could someone who has a little more knowledge about this fill me (us)
> in?

> See you at Coastermania! (if not sooner)

> Jim

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MF lift......No Sound?!

Post by Christian Luch » Tue, 07 Mar 2000 04:00:00

Yeah, they mentioned that evacuation system at Eastcoaster. I'm not sure
what the capacity of it will be though.

Chris.

Quote:

> Oh? So it's just one car? Ok, I didn't remember hearing how that was set up.
> Neat.

>     Iain
> --
> tokama       http://www.oxford.net/~hendryjr
> ICQ UIN      5362826
> AIM          Linjerflyg
> h e n d r y j r  AT  o x f o r d  DOT  n e t
> (Remove bibiphoque to reply)

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MF lift......No Sound?!

Post by CP Irvi » Wed, 08 Mar 2000 04:00:00

Quote:
>Bryan Edwards tried to explain that the anti- rollbacks lift up off the
>track, at least until there is some kind of problem, when they snap back
>into action!

>A perfectly quiet lift!??

   I've been wondering about that, also. The question I have now: Is this the
future of lifthills, or just a novelty? At first I was mourning the loss of
lift-noise (if there isnt any on MF) but thinking about it, it seems the
'futuristic' route. Will we see more lifts designed as MF's, or will the
chain-driven lift still predominate?

 *\l/*CP Irvine*\l/* QUEEN OF DETAH
-Proud & Loyal Cedar Po!nter since I was a pott tot!-
amEriCA's rOcK n' roLLeRcOasT - haulin' ass since 1870!
IN SIGHT, IT MUST BE RIGHT - WE LOVE SNS!

*just can't stop CG&CP - shakin' the lakes since 10/11/98*

 
 
 

MF lift......No Sound?!

Post by Jack Wlezi » Wed, 08 Mar 2000 04:00:00

Hey Kids!  CP Irvine has been wondering:

Quote:
>I've been wondering about that, also. The question I have now: Is this the
>future of lifthills, or just a novelty? At first I was mourning the loss of
>lift-noise (if there isnt any on MF) but thinking about it, it seems the
>'futuristic' route. Will we see more lifts designed as MF's, or will the
>chain-driven lift still predominate?

Hmm...I think it depends on (1) the cost efficiancy of the system and (2) the
amount of complaints of riders who complain about hearing all the swearing
going on as riders peer 300ft down.

"Hey look!  Woodstock's Express looks like a kiddie coaster from up here!"

-Jack

 
 
 

MF lift......No Sound?!

Post by Gordon Gilber » Wed, 08 Mar 2000 04:00:00

Quote:

> "Hey look!  Woodstock's Express looks like a kiddie coaster from up here!"

"Hey look!  The Magnum looks like a kiddie coaster from up here!"

;-)

 
 
 

MF lift......No Sound?!

Post by RSteven8 » Wed, 08 Mar 2000 04:00:00

Quote:

>> "Hey look!  Woodstock's Express looks like a kiddie coaster from up here!"

>"Hey look!  The Magnum looks like a kiddie coaster from up here!"

Well we know what Gemini and even Mean Streak look like from Magnum....we're
just going up another order of magnitude.

Roz
who can hardly wait!

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Big Shot Rules!

 
 
 

MF lift......No Sound?!

Post by Christopher G. Knig » Wed, 15 Mar 2000 04:00:00

Quote:
>Subject: Re: MF lift......No Sound?!

>Date: 3/7/00 2:09 AM Central Standard Time


>> "Hey look!  Woodstock's Express looks like a kiddie coaster from up here!"

>"Hey look!  The Magnum looks like a kiddie coaster from up here!"

>;-)

Hey look what are those ants doing down there oh my goush I could have sworn
that Magnum was high than that the other day.

Christopher G. Knight
Kansas City, KS
South of Sawblade (Kansas) Route 5
KC Highways always Y2k Complient
Kansas City Highways http://www.crosswinds.net/~sawblade5/index.html
Spammers please remove my Y2K bug

 
 
 

MF lift......No Sound?!

Post by Charles Nungest » Wed, 15 Mar 2000 04:00:00

Quote:
>Hey look what are those ants doing down there oh my goush I could have sworn
>that Magnum was high than that the other day.

>Christopher G. Knight

well the magnum used to be 310 ft tall till it started sinking, MF is just a
new coaster to reclaim the record.

Chuck
http://members.aol.com/coasterfanatic/CoasterFaNaTiCsFoRuMindex.html

 
 
 

MF lift......No Sound?!

Post by Joe » Wed, 15 Mar 2000 04:00:00


Quote:
>>> "Hey look!  Woodstock's Express looks like a kiddie coaster from up here!"

>>"Hey look!  The Magnum looks like a kiddie coaster from up here!"

>>;-)

>Hey look what are those ants doing down there oh my goush I could have sworn
>that Magnum was high than that the other day.

There once was this horse, and then it died, but these people started beating
it.  And they kept on beating this dead horse.  Why oh why are they beating
this dead horse?  

:P
_______________

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Track Record:  137
Top Steel: RB, Hulk, AC, Montu, S:RoS, Steel Force, Kumba
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MF lift......No Sound?!

Post by Dont email here not my addre » Wed, 15 Mar 2000 04:00:00

And wow, that dead horse looks so small from up here!!!

Sorry, I couldnt resist :)