MOC: "Skyrunner"

[Haddock51]

This is an experimental MOC, equipped with 2 9V engines, designed for the Twin Spirals with close to 10 percent inclinations (see also under "9V Extreme II - Twin Spirals").

Tests later this year will show if it manages "all the way up to the top"....

[Hrw-Amen]

This is for a roller coaster? How high is it going to go, and how will the cars get held onto the track when it goes upside down or at extreme angles? Do you have any of the structure in place yet? If so it would be good to see it. I imagine this will be an interesting project for us to follow and see how it developes.

[Haddock51]

This is for a roller coaster? How high is it going to go, and how will the cars get held onto the track when it goes upside down or at extreme angles? Do you have any of the structure in place yet? If so it would be good to see it. I imagine this will be an interesting project for us to follow and see how it developes.

The top level will be approx. 1 meter above ground level (table).

I don´t know what you mean by "upside down"? Personally, I don´t think you can build a true roller coaster - including loops - with Lego Train 9V, even if you would use only one engine and start from a high level with very high speed. Huge challenges construction- and traction wise, not to mention the centrifugal forces ... Maybe somebody has tried this?

The rails will be fixed on masonite ramps (width approx. 12 cm) which will obviously bend given the narrow radius and the inclination. I don´t know how much the lateral inclination of the rails will be. There is somewhere a limit where the moving unit - with low speed - starts to tip of the rail.

The projects "9V Extreme I and II" are still in the planning phase. I first need to get my new hobbyroom ready later this spring. However I intend to set up some testing environment to find out what is actually possible. The reason why the inclination gets so steep is the need for space between the circles. Using only the Skyrunner would probably require less space and allow for lower inclinations, but I haven´t given up the idea of trying at least small and light trains with double engines.

Uphill is one challenge, downhill probably an even bigger one as speed continously increases even at low power.

In my previous display (see Brickshelf, DaRePo) I had inclinations - most of them straight - of approx. 8 percent. No problems to pull up a 4 engine powered Santa Fe with two 9V transformers in synch.

Edited February 28, 2013 by Haddock51

[Haddock51]

The top level will be approx. 1 meter above ground level (table).

I don´t know what you mean by "upside down"? Personally, I don´t think you can build a true roller coaster - including loops - with Lego Train 9V, even if you would use only one engine and start from a high level with very high speed. Huge challenges construction- and traction wise, not to mention the centrifugal forces ... Maybe somebody has tried this?

The rails will be fixed on masonite ramps (width approx. 12 cm) which will obviously bend given the narrow radius and the inclination. I don´t know how much the lateral inclination of the rails will be. There is somewhere a limit where the moving unit - with low speed - starts to tip of the rail.

The projects "9V Extreme I and II" are still in the planning phase. I first need to get my new hobbyroom ready later this spring. However I intend to set up some testing environment to find out what is actually possible. The reason why the inclination gets so steep is the need for space between the circles. Using only the Skyrunner would probably require less space and allow for lower inclinations, but I haven´t given up the idea of trying at least small and light trains with double engines.

Uphill is one challenge, downhill probably an even bigger one as speed continously increases even at low power.

In my previous display (see Brickshelf, DaRePo) I had inclinations - most of them straight - of approx. 8 percent. No problems to pull up a 4 engine powered Santa Fe with two 9V transformers in synch.

Apparently somebody has made a real roller coaster, but not in 9V. I got this link from a swedish colleague. The whole construction is simply fantastic! Talking about "extreme"...

http://www.horseshoe...aster/index.htm

Edited February 28, 2013 by Haddock51