Hello all,
I am an industrial design engineering student of the Technical University of Delft (The Netherlands). I'm currently working on a playground product on rails, you could call it a skelter, on which childeren provide propulse the vehicle by muscle power.

The propulsion is done by a conveyor belt whichs stand under an angle of aprox. 30 degrees, and the maximum load will be 60 kg. The length of the belt is approx 170 m. The belt has to be solid, e.g. PVC, and stay stif (low inflection). (See picture)

At first I was thinking of a rollerconveyor, but in that way the load will bend the belt, and it needs to stay flat.
Then I came up with the idea to use conveyor (transport) chains, with rollers to to support the load on the side.

I was wondering if anyone could help me (globally) on this issue. I have to get a global idea of the construction, and used parts of the conveyor belt I will use.

Thanks very much in advance,

Guido