8 replies to this topic

[The Stig]

This is my own formula and technique for getting that oh so sought after B&M loop shape.
No it isn't perfect. But it's very, very close. And it looks something like this:



Oh yeah. The support is 2/3 the height of the loop at 70°.



Do it again on the other side to get a full loop.
It's very important to support it properly.
Then simply add your favorite VV track spine, and you're done.

Edited by The Stig, 18 October 2013 - 12:59 PM.

[Micro Mike 21]

Very nice addition Stiggy!!! I think I might use this once!

Edited by The Stig, 26 February 2013 - 11:09 PM.

[rollercoasterfanatic919]

That looks incredible! I'm imagining the other half of the loop, and the shape seems to be just right. Very nice technique.

[ForgotToGrowUp]

Funny, when I planned the loops for Vortex I did virtually the same thing but on graph paper. Then I planned the boxes around the shape and recreated hte track work after I built the boxes. This is way batter!

[The Stig]

[Witting]

This is just amazing I've been comparing it to the real-life loops and it looks good!
But 1 question do you also have the radius to drop-size relations? For the arrow 1 you could use the center of the pull-in radius as the drop height but I'm not sure.

[The Stig]

Pulling to drop ratios would vary. Loops aren't always after the first drop.
Arrow loops are a little funny because they don't grow larger than a certain size.
That's why big Arrows like Viper and Shockwave had medium sized loops really high in the air.

Edited by The Stig, 18 October 2013 - 02:34 PM.

[Witting]

I would also need to know where the other center of the circles need to be because otherwise this awesome guide is pretty useless, at least to me.

[Jogumpie]

I would also need to know where the other center of the circles need to be because otherwise this awesome guide is pretty useless, at least to me.

Everything is geometrically determined. It is up to you to determine the locations of the different circles the track segments are part of.