'Lo all!
I'm certain there are a few pilots here old enough to be trained on the venerable Link Trainer. I was just going through some old photos with my old squadron today and came across a few that brough up some fun memories.
My first RCACC squadron was 87th Eagle out of Welland, Ontario. We had a Link Trainer in pieces. How the heck we got the damn thing I have NO idea. Well; some officer got it into his head it'd be a good idea to restore it and get the old clunker working again - and this one was real old; 1950 at the latest (so about 30 yrs at the newest.) Of course - who'se the best people to fix it up? You bet - Cadets.
So there we went; cleaning, scrubbing, tapping away at this poor old wood-and-fabric doghouse; with officers - IOW; people that think they know what they're doing - worked on the hard bits. The bellows; pneumatics, etc. I tell you; it was quite a proud moment when we got the little plane mounted on the base; as you can imagine. The poor thing actually looked pretty good - gleaming dark blue with a silver wooden instrument hood. 
Well; the day came when the contraption was pronounced "done" by the...ahem...experts. Man were we proud; looking at what we'd created. Link's aren't very big; but when compared with the pile of junk in the corner it was the year before; it looked enormous - a lovely monument to what a few dozen eager hands can do in a year and a bit.
Our CO got the first ride. He was...fairly large. They started the thing up; it made the most unholy rattling racket you've ever heard! Maj. Smith climbed up into the thing; made a few test-turns. Worked great. So he tried a nice sharp turn to the port; just in time for the left bellows to let go. Hee hee - I never knew you could spin a Link Trainer! It went round a few times before we could shut it off.
Couple of months later; the bellows was repaired; and we tried her again - worked great; save those had to be the loudest instrument flights on Earth - I doubt an F-18 makes so much noise. (They'e apparently pretty quiet when they're working right; I've been told.)
Everyone got a turn; and we wound up using the thing fairly successfully for ground instruction. When I earned my Glider Scholarship; they congratulated me by giving me several hours of free time in the thing; then locking the damn hood with me inside for about an hour, the jerks.
Lol - just remembering a fine time of life - that old piece of firewood had loads of personality; sure 'nuff.
Cheers!

LOL   They rebuilt a Link Trainer at my old ATC squadron when I was a cadet there back in the 1950s. I was put in charge of instruction as I was the only one there who could "fly" the darned thing.

By coincidence the electronics division of Miles Aircraft based at my home town of Lancing, Sussex, went into partnership with Link, becoming Link-Miles & later Singer Link-Miles. As I recall they were mainly involved with military vehicle & flight simulators. http://www.link-miles.co.uk/

The company was later taken over & the workforce moved to the old Rediffusion Flight Simulation (later Hughes Simulation & finally Thomson) premises at Crawley, near Gatwick Airport. My brother worked at "Redifon" for over 20 years when they were the world leaders in flight simulation. While he was there they developed the computerised wrap-around visual display that is now commonly used on all flight simulators. Until then the visual display was projected onto flat screens from a camcorder on a mobile gantry above an actual 3d model of the airport. The highly detailed models were so big they were generally mounted upright on the wall of the room the simulator was housed in. The complete model had to be replaced if you wished to represent a different airport. A highly skilled team of model makers was kept busy creating them. This trade has now been made redundant by modern technology.

Rediffusion also produced sims for the leisure industry. These include the "Back to the Future" ride at Universal Studios in Orlando, Florida. Still one of my favourite rides.