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[PhilP]

Perhaps it's uses gravity, like a roller coaster, I can't imagine anyone wanting to risk even their cheapest bit of kit on it

No backbone, some people! Where's your sense of adventure, and 'derring-doo'?

i have found a link to words, but no moving pictures, as yet..

 

[Greg Elmassian]

Perhaps it's uses gravity, like a roller coaster, I can't imagine anyone wanting to risk even their cheapest bit of kit on it

Agreed, I experimented on something on a smaller scale, and the flexing of the unsupported track was quite a bit!