Mobile landing ramp

[Icarus]

Hucks to flat arn't good. I think we can agree on that.
But all the good launching rocks or urban stuff always seems to be too flat to huck. My plan to to create a mobile landing ramp something like a very strong folding table. Imagine a metal reinforced tresal (sic) table with or without a curve, stuck at a 45 degree angle to flat. This would be great if it could work but if it collapsed it would probley be deadly.
Good Idea?
Questions?
Comments?
Production Contracts?
Marrage Propsoals?

[RCOH]

It would be a good idea if you were going to session one spot for a while. But getting it to-and-from spots would be a hassle (unless someone had a car).

[Icarus]

How strong does it need to be?

[Grip]

It'll need to be capable of taking 2169.5 Mpa (on a directly corelated scale) with a maximum elongation of 11% on it's unsuported axis. Make sure you allow for the depreciating effect of Young's Modulous when used alongside Beryllium Copper with a Brinell hardness of between 96-102.
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Icarus... welcome to Farkin, mate and excuse the above joke, but your question sort of left you open for it. There is no way someone could tell you how strong it needs to be in a way that would A/ make any sense to you and B/ actually help you make the thing. The bottom-line is it needs to be strong enough to take repeated hits from an MTB landing on it.... and of course every rider lands differently etc.

As a guide though, I made "A" frames for trials comps about 6-7 years ago and they have had the bejesus belted out of them in every conceivable way ever since and are still going strong. Each section of these were 1200mm sq and the frame work was 50x50x3 mild steel angle around the edges and as a cross in the centre. The surface was 20mm thick plywood screwed to the frame.

Now that's probably over kill for what you want, but it'll last forever (sort of). You can go to lighter material but if you increase the length past the 1200mm (which you'd need to for a landing ramp) then you would have to increase the bracing underneath.