I have two techs working for me aswell , I have always wanted to get into domestic central vacuums but never had the chance plus most houses out here are brick or concrete which makes the instillation cost very high. we get beam here as well as a few others but on average it costs $ 11000.00 to fit one , its insane.
I only do some designing these days , not allot mainly small things like redesingning motor mounts to accept newer( Cheaper

) motors for one or two companysthat still produce models in SA
I have attached a photo of one Electrolux wet&dry that i helped to develope with other people when I woked at Electrolux cape town , Its a team effort
Most of my designing had to do with adapting motors to fit machines and the study of air flow and so on, I spent most of my time developing air flow chambers, and slip streaming the air flow, Its amazing how 2mm can change a vacuums suction from good to fantastic.
I saw your website , not that crappy ours is almost finished what fun that has been.
I will happily send you pics when I can find some, I looked at some now but they have machines that have not been released on our market yet. a number of years ago I did proper designing but now its more testing and improving products for our market. things can take a bit o a bashing in SA.
I am a workaholic and I suffer from a form of insomnia so I don't sleep much. I love what I do and I miss working on the machines my self allot.
I do not do any engineering projects outside of SA as I said its a small part of my business, but I would love to come over and see your place, I love learning and you are obviously quiet knowledgeable
As for asking you to prove any thing i am not , Your comment was there is really No expert opinion on here. there is so you were wrong in saying that thinking that you are the only one who is an expert.
I have no problem with you your self I enjoy your point of view some times but you need to realise that you are not the only one who is an expert.
