Impulse holding brake

I have ridden the new V2 at SFMW 11 times this year. I didn't ride it with the hold this year, but on the new version, the hold seems to be incorrect. It does not hold for very long and it really hurts your chest when you hit the restraint. I was wondering how the hold is on V2 at SFGAm and S:UE at SFWoA.

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"enough is enough"-?

The hold on V2 @ SFGAm is great, the only reason that the holding brake on v2 @SFMW is because the back spike is smaller than V2 and S:UE. It holds for about 4 and a half seconds on V2 @ SFGAm, the back spike at SFMW holds for like 1 or 2 seconds 'cause it's shorter and it doesn't hold the entire train on the back spike.

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CAK91687
Whizzer is forever!
Coaster Amusement
http://www.geocities.com/cak91687/Coaster_Amusement.html

*** This post was edited by Chris K. on 7/31/2002. ***

Actually, SFMW's V2 holds for only like a tenth of a second. You hit your restraint hard then plummet down back through the station.

Wow I thought V2 at SFGAm and S:UE held for like only a second. 4 seconds is a great amount of time IMO.

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http://sixflagsthrills.tripod.com/sixflagsthrills visit for some great thrills!
"enough is enough"-?

It has nothing to due with the height of the spike. SUE's spike is just as tall as the on V2 at SFGAm and it doesn't hold for more than a half second.

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James Draeger
-Proud co-founder of the Coasterbuzz street team

4 seconds...oh no...thas quite a stretch

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God is Good!

They all hold for less than .2 of a second. 4 Seconds and it would feel like a ride at a carnival or something. I've heard accounts that the SFMW V2 likes to stutter in the holding brake, though.

--Josh

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Yea, its only for a tenth-of a second at a dead stop. But it you are against the harness for about a second. Sometimes, it pushes the train farther up the spike! Sometimes it drifts down while holding, sometimes completely stopped, sometime it shifts up. Im talking about SUE here.

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Six Flags Worlds of Adventure Online
Team NL
NITRO ~ The most EXPLOSIVE coaster on the planet!

And the holding brake at SFMW makes the coolest screeching noise.

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http://sixflagsthrills.tripod.com/sixflagsthrills visit for some great thrills!
"enough is enough"-?

yeah no way in hell SFGAm's is 4 seconds. each are less than a second dead stop but combine that with the gradual deceleration of the train up the spike and the gradual acceleration back down and it can feel closer to 2 seconds.... but not 4

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I've noticed that on the holding brake at SFGAm, it does seem to kind of levitate up and down with the holding brake it is not a motionless stop. I find it more obvious in the back for some reason.

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Tuesday's Gone With The Wind.
Elijah Rock.
Is it written in the stars?
La Vie Boheme!!!

SFGAMDie HARD said:
I've noticed that on the holding brake at SFGAm, it does seem to kind of levitate up and down with the holding brake it is not a motionless stop. I find it more obvious in the back for some reason.

i think that what you describe is normal... the magnets are pushing up and down at the same time to keep the train in place and if the power isnt quite equal and the upward force exceeds the downward force (or vice versa) for even a millisecond, the train drifts up or down the brake strip. In response the magnets react and push it back... in other words see-sawing to find the perfect stop position.

that's my theory at least.

2 seconds is what i counted at SFGAM. Also, sfgams hold is a dead stop sfwoa is a rolling stop

Drop208, it all depends on how much power it released. Sometimes Ive seen it stop completely (most of the time), some time it rolls a little, and others it pushes up.

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Six Flags Worlds of Adventure Online
Team NL
NITRO ~ The most EXPLOSIVE coaster on the planet!

SUE only stops completely when it's an empty train, or has VERY few riders in it. Otherwise I've never seen it stop completely.

V2 on the other hand stops completely with a full train, and actually *goes higher* with an empty train. Pretty cool to watch on empty morning test cycles.

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It tastes like burning.

I went to SFWOA a few weeks ago and SUE came to a dead stop every time. I guess its because the train was almost empty the whole day.

Okay, yeah maybe 4 was a stretch a little, but it sure felt like it was about 3 because I counted it with mississippi. Maybe they did it for some reason longer when I went on it?

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CAK91687
Whizzer is forever!
Coaster Amusement
http://www.geocities.com/cak91687/Coaster_Amusement.html

*** This post was edited by Chris K. on 8/1/2002. ***

JD, just to explain what's going on up there...it's simpler than you make it out to be.

It isn't a brake at the top of the tower; it's a row of linear motors. Those motors are energized to drive the train in an upward direction, and they apply a force roughly equal to the weight of the train.

So what you have is motors pulling up and gravity pulling down, and if everything is balanced just right, the train won't move. It's virtually impossible to get it perfectly balanced, though, so there will typically be a little slippage in either direction. But it really isn't a push-pull thing with the motors...the motors just pull upward, and try to balance against gravity. To release the train, the motors are simply shut off.

--Dave Althoff, Jr.

Does SFGAm's or SFWoA hurt your chest like SFMW's?

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http://sixflagsthrills.tripod.com/sixflagsthrills visit for some great thrills!
"enough is enough"-?

coastermaster said:
Does SFGAm's or SFWoA hurt your chest like SFMW's?

not particularly... i guess it depends on your pe rsonal opinion though... to me it doesnt hurt...

not to be rude or perverted, but i wonder what girls think of it?