Knex-LIM

Hey Joey, you didn't answer my question about building a TA2K instead of a RFF. Instead of CO2 carts, you could use model rocket motors! :) I think I'll build a TA2K outta LEGO. Should be fun!

I tried to find a site on how to make your own LIM/LSMs. No luck. Anyone know of any? I'm also interested in how you can make them yourselves.

TrBiggar, you like to be specific don't ya? :) You gonna dispute Neil H's post saying that 75mph is rather exaggerated? I'll go first, that'll smash someone's ankle!

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CoasterGod, who won the Pyromaniac award upon graduating from school for his rocket obsession!
I have found the system that im going to use.

Im going to use a electric drill with 1200 rpm that will pull a chain. The chain will connect to the car and then let go at the rise to vertical
hopefully not going through the cieling.
Coastergod, the only reason were not making a TA2K is well...we dont have enough knex. lol
joey isch said:
"Coastergod, the only reason were not making a TA2K is well...we dont have enough knex. lol"


LOL. I thought so, forgot to add that. Perhaps you could go around the neighborhood borrowing Knex from friends. That's what I did with my LEGO coasters as didn't have enough rails for it.
I don't know about LIMs, but I'm currently constructing a 6 ft. tall S&S tower. I geuss I could build a S:TE with it, if I place the tower horizontally. I geuss I could make a Hypersonic too!

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SROS at SFNE, the #1 steelie

CoasterGod, what did you use for your LEGO coaster rails? Just curious.:)
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"Johnny Rotten shot me with his BB-gun."
Intamin2k said:
"CoasterGod, what did you use for your LEGO coaster rails? Just curious.:)"


I use the rails from the old 4.5V (Blue) and 12V (Gray) train sets. LEGO doesn't make them anymore. With the rails, turn them 90 degrees and viola! Curved rails become loops. Flat turns aren't possible, unless you bend the straight rails yourself. One of my coasters had 90 degree banked turns. See photo below. It uses Arrow-style ledgers with TECHNIC parts, with the studs facing each other.

Close up of the track - http://www.zing.com/picture/pfb7b166735ef6c341f929e0e18d032b8/feab6644.jpg.orig.jpg

More photos - http://www.zing.com/album/?id=4292796583

*** This post was edited by CoasterGod on 5/6/2001. ***
That is really neat! I think that just inspired me to create a coaster somehow involving my good old toys.

Legos, Lincoln Logs, and K'Nex.

I love those things!!!

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When will......V2.......open.....*dies* (Vertical Velocity opens next day)
What are Lincoln Logs? Never heard of them. They sure sound American! :)
Lincoln Logs have been a building toy in America for generations. Basically it is a small log(maybe 1-2 inches in length with little divots in them to build upon one another. I used to create some great log cabin style houses with this toy back in my youth. I am surprised with as long as they have been around that they didnt sell them over the pond.

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"SAVING THE WORLD BEFORE BEDTIME" Powerpuff girls *** This post was edited by Chitown on 5/7/2001. ***
Ta. Never seen them in toy shops. Then on the other hand I outgrew toyshops long time ago! :)

Upon reading the S&S thread, you could use this method for launching the car. Cutting a slot in the PVC tube may not be viable. With the S&S system, they leave the piston in a fully enclosed cyclinder & attach both ends of cable on each side as to make it full-loop. They have pulley on both ends. In this case, attach a 'pusher' onto the cable. At the start of the tube, glue on a 90 degree elbow joint. Drill a small hole in the elbow in line with the center of the running tube for the string to run through. Attach the vacuum cleaner to the joint .This should have less air loss than the aircraft carrier launch system.

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The Buzzer formerly known as CoasterG-d
Is that how Hypersonic works?


By the way, hows that inverted model coming along?
Simple Science project type method:-

1- Have another smallertrack underneath the main one and on this run a holding car to push the proper car (from now on refered to as Shuttle).

2- Run string or thin cable from the front of the holding car onto a drum, a cotton reel should work but sothing more subbsansal may be needed.

3- Do not stick the cable to the drum yet, instead open an elastic band and place the drum in the middle. Selotape this on (Blue Peter style) with tape so there is a peice of elastic each side with two ends of the band free from the drum.

4- Pull the elastic tight and attach between two rods like on a hammock. This should hold the drum in place but allow it to wobble.

5- Now wind the drum as much as possible and only now stick the cable to it. Hold the drum in position and prepare car for launch.

6- Realese the drum which will wind in the cable pulling the holding car which in turn pushes the shuttle along the track. Once the car gets to the incline it the two car part ways the shuttle going up and the incline and the holding car continuing along the straightr track underneath to be brought to a stop by a couple of corks.

7- This launch mimmicks that of a shuttle loop or Space Mountain in Paris. It is explosive but can max out very quickly. However it is proven technology rather than bar Magnet which could take a while.

I hope my method helps, I use it to launch Lego cars usually i will have to make a coaster one day.

john Wilkes
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JawCoasters - Site for UK Coasters
http://www.wilkes2536.freeserve.co.uk
Why don't you just strip down an old sca-electrics, you know them racing car track things. Us the metal track and set to an electric current through it.

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Live your Life On the Edge
Or Live Life Over the Edge.
Either way make sure its on a coaster
John Wilkes said:
"Simple Science project type method:-

1- Have another smallertrack underneath the main one and on this run a holding car to push the proper car (from now on refered to as Shuttle).

2- Run string or thin cable from the front of the holding car onto a drum, a cotton reel should work but sothing more subbsansal may be needed.

3- Do not stick the cable to the drum yet, instead open an elastic band and place the drum in the middle. Selotape this on (Blue Peter style) with tape so there is a peice of elastic each side with two ends of the band free from the drum.

4- Pull the elastic tight and attach between two rods like on a hammock. This should hold the drum in place but allow it to wobble.

5- Now wind the drum as much as possible and only now stick the cable to it. Hold the drum in position and prepare car for launch.

6- Realese the drum which will wind in the cable pulling the holding car which in turn pushes the shuttle along the track. Once the car gets to the incline it the two car part ways the shuttle going up and the incline and the holding car continuing along the straightr track underneath to be brought to a stop by a couple of corks.

7- This launch mimmicks that of a shuttle loop or Space Mountain in Paris. It is explosive but can max out very quickly. However it is proven technology rather than bar Magnet which could take a while.

I hope my method helps, I use it to launch Lego cars usually i will have to make a coaster one day.

john Wilkes



So, are you saying some sort of slingshot type method?
joey isch said:
"Is that how Hypersonic works? By the way, hows that inverted model coming along?"


I was referring to their tower rides, but come to think of it, probably! In these HS system photos,
http://www.midwestcoastercentral.com/galleries/PKD_03-25-01/main.asp?PicName=HS_system_01.jpg
http://www.midwestcoastercentral.com/galleries/PKD_03-25-01/main.asp?PicName=HS_system_02.jpg
http://www.midwestcoastercentral.com/galleries/PKD_03-25-01/main.asp?PicName=HS_pulley_01.jpg
You can see the shuttle track on top of the main track & it continues in a straight line past the upwards curve. It looks like there is a central cylinder under the main track for the piston to run through. There's a photo of a pulley. So, yes, looks like I pretty much described how it works.

As for Taipan - my Inverted model, haven't done anything past what you can see in my photos. I'm too busy with my R/C Helicopters! One day...

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The Buzzer formerly known as CoasterG-d

*** This post was edited by Taipan on 5/8/2001. ***
Ok... I dont want to contradict myself, but were gonna use rubber bands. We didnt think they would work at first, but we screwed around with them for about 4 hrs yesterday and decided that was the way to go. Im gonna go to some sort of hardware store and pick up an industrial sized one. The tower now is about 7 ft tall. I think if we have a strong enough rubber band we'll make it around nine or ten ft, or make the runway longer. I want to get some pictures on my friends site soon www.angelfire.com/games3/Coasters. Its a great site with 3D models like badnitrus...(but hes just starting out).

By the way Taipan/Coastergod, Nick (my other friend) was wondering what you used for Taipan, and how you did it. I am to, were sorta motivated to make one now...lol.
yeah im nick the friend working on it.

Coastergod: I was just wondering, if you used a plastic spine and metal running rails. I have the general idea of how to make them but i dont know what to use for the track part. Looking at Taipan i can see the u used wood supports. What type of wood did you use for the base? I was thinking of using particle board.

Oh, no im not a new comer to modeling coasters. Ive been doing it for a while. Im kinda going by trail and error to get the idea of how to perfect the building of them.

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CP in 2002, get to the point
SmArtAce said:

Oh, no im not a new comer to modeling coasters. Ive been doing it for a while. Im kinda going by trail and error to get the idea of how to perfect the building of them.

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...LOL...Nick all yoov ever modeled is knex, what are you talking about...ROTFLMAO!!


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I`N`T`A`M`I`N`

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