recommendations for mecanical systems

Forex trading is hard ,really hard that's why I want precise rules knowing exactly what I can and can not do.Have no ambiquity in my trades what so ever in short I'd rather trade a mecanical system.But it's easy for a author of such a system to promise the world only independent reviews counts for anything.

So I would like to ask for recommadations.Know of a mecanical system that works?Why don't you post a recommendation for me.

I'd appreciate it very much thank you