Strange - The Henderson generator is 84 years old, and is being labelled as the first free energy generator, yet the stirling engine is older than that????
It's sale scams. Drawing you in by what the energy companies can pay you, how you can profit etc etc. Sales pitches that tire a point usually end with idiots queuing up to pay money. This information would be worth a lot more and I'd pay £1000 for it easy... Free energy? For life? Are you kidding me? Knowing how for £40?
I doubt it
Free energy generators do work, but you're not going to be able to build one using scraps laying around like they suggest. Sure you can buy the raw materials and have them, but it would require further specialist work, direct measurements with very fine tolerances that only certain machines are capable of achieving, perhaps even metallurgy work, or finishing up with anodizing or abrasive blasting or whatever else. I worked in the design process for many housings for products in the works, and any product with moving parts require a lot of work, a lot time and a lot of assistance from various processes that can get the 0.01+/- tolerances that would be required for some of these things and that would require a number of different machinists time, meaning a lot of money. What is the hourly rate? Some of these simple processes can take up to 3 hours just to cut and grind. I'm assuming there's various parts and all made out of different things, glass, metal, plastic, rubber etc. One part depending on the type of material used may be better using milling, while an other material is better with an injection operation, so it's not as if you could get a "bulk" discount by having a CNC machinst do the entire work for you, as you may encounter as I have in the past that if you want something built, you have to bring about 6 different companies on board who specialist in different areas. By the time you have finished, you'd be looking at 4 figures total easy and that's being generous, because those operations are not cheap I can assure you, especially when parts like pistons and valves are included. They require a lot of work.
Perhaps I've read this wrong, and you can buy just a standard piston of any kind? Get parts from the local B&Q and throw it together with elastic bands, but I doubt that is the case and anyone privy to such information would also keep it to themselves. When you sell back to the grid, you get paid, but it also has to rely on a lot of people demanding energy from the grid. People generating their own power and energy would make the grid useless and therefor no one would be able to sell to it, which is why £40 reeks of opportunistic selling that'll have a 3 month run so that they can escape before people finally realise they can't make one
My only wish is to live well. To form memory's which demonstrate a full enjoyable life!!! I am not Greedy