4 tube, 3 tube, 2 tube.

Hey peeps.

On coasters you see different types of trak on different places of the ride. I wanted to know where each type would go. For example 4 tube trak would go on the faster bits and so on.

Thanks!

Jordz.

On a hyper you can use any of these on the coaster, the Faster the more strength the track should need, so 4 tube on bottom of first hill, or fast hill , 2 tube mabie on the lift, And 3 tube on slower inversions. Look on www.rcdb.com Type a few hyper coaster names in, there should be some good examples.

Thats not true. Its where theres alot of force you need 4 tube track. You can have a piece of track where the train travels pretty fast, but has little force at all:


http://p2.rcdb.com/picmax/thorpe-park/colossus16.jpg

Take Colossus' bunny hop for example. Its going pretty fast, one of the faster parts of the ride in fact, but there is little force, so its 2 tube track.

Yes^, you just need to use your judgement as to how much force requires each type of track.

Most Intamin coasters don't use the 2 tube track at all except in the station so the majority of types you will use is the 3 tube and the 4 tube.

It's hard to say what amount of force decides between a 3 and a 4 tube because for example "Rita: QoS" is 3 tube all the way around the track and that has Vertical Gs of up to 4.7 which is pretty forceful.
http://www.rcdb.com/ig2787.htm?picture=5

Whereas coasters like Millennium Force have places where 4 tube track is not necessarily needed like on this airtime hill:
http://www.rcdb.com/ig594.htm?picture=13

I base my selections off of rides like MF. Some rides never use 4 tube, other rides only use 4 and 2 (like TTD type rides). What I did for my lift based strata coaster was I used 4 tube for the first part where the train was faster, then later on I switched to 3 for a bunny hop and a turn, then I use 4 for higher hills, including where it goes into the MCBR. The overbanks are also 4 rail while a lower, smaller overbank was 3, and the bunny hops and low turns were also 3. It's best to simply study real rides as mentioned above.

[Brtnboarder495]

The advantage of using more "tubes" is that the track then requires less supporting, because the extra "tubes" act as a brace. Intamin decides which would be safer and more cost effective, more tubes or more supports, of course each situation differs.

Rita: QoS" is 3 tube all the way around the track and that has Vertical Gs of up to 4.7 which is pretty forceful.

But did you notice the support bracing?

Whereas coasters like Millennium Force have places where 4 tube track is not necessarily needed like on this airtime hill:

Yes and no, they decided they didn't want as many supports, so that it would look cooler and more clean cut.

The track type is based on forces and support options, NOT speed, a train traveling on a straight away track at 200mph isn't going to need anymore bracing or "tubes" than a train traveling at 100mph on the same track.

Jpe : Colossus has a 2 tube track at the bottom of the first drop, just has some crazy supporting.

I always thought it was weird how the Superman:ROS clones both have 2 tube track everywhere except the lift hill and the two big air hills. I'm guessing it must have been cheaper than doing all 3 tube.


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But then look at how many supports they have. I think it looks kinda funny like that.

this is how supports work. (atleast in my book, hopefully someone backs me up)

1 sized tubes, i do not use these as they are too skinny for footers. i only use them for cross beams.

2 sized tube footers, these need to be placed closer together than any of the supports. these can be used as cross beams as well.

3 sized tube footers, these are the normal sized ones. these should be placed the same distance apart, no matter how high or forceful the coaster is at a certain point. i only use these for cross beams in severe situations, when i REALLY need a fat support to be placed.

4 sized tube footers, these should be placed farther apart than 3 tubed footers. this is the thickness of coasters like TTD. i do not use these for cross beams.

5 sized tube footers, i NEVER use, for anything. footers, cross beams, etc, i do not use these.

this is how i do supports, and what size i use for what.

For me, the amount of tubes used depends on the coaster style I'm building and if it has any similar elements to real life coasters. I also look at how tight turns are, how long the trains are, and what the speed is. On higher g turns it's a good idea to move the supports closer together reguardless of what the track tubes are.

Four tube track is best used on drops, areas of high stress, or areas with crossovers where less supports would look cleaner. Unless the project is really big and has high speed all around, try to keep four tube track to a minimum.

Three tube track should make up the majority of your coaster. It is the most used of the Intamin styles and works well in many areas. Remember though, there is less track strength so more supporting will be needed. However, because three tube is still pretty strong you won't need too many more supports than with the four tube.

My advice on using two tube track is to keep it to a minimum unless you want to support it properly. Two tube is best for turns to lifts and turns after breaks, areas where the train isn't traveling at high speed. If you want to use two tube like it's used in SROS you had better be sure you support it like that.

What about on euro-fighters. Theres 2 tube and 2 tube with cross ties. Where should i put the cross ties?

Just look at pictures of Eurofighters on the RCDB and see where they have them. They are there for the same reason as the extra tubes are on intamin track, to re-inforce it.

Ok thanks

Absolutely ridiulous that helix, i bet the force is so miniscule and its way to over supported[lol]. And people stillr why New England ROS is the better than the two clones.