Selecting gears strong enough to do the job you need them for is great but what if those gears are too big to fit in the space you have available? How do you get the same gear ratio from smaller gears? You use a compound gear train and Matthias Wandel […]
How it works
Here is a video from Matthias Wandel where he gives a practical description of how a direct current motor works. He does this in a nice practical way by dismantling a battery drill and explaining how the different parts of the motor works. Here is my video about the cheap […]
How DC motors work
Something different today, here is a couple of videos about turbo jet engines. The first one is an old american instructional video which is about a complicated fighter jet engine. The second is everyone’s favourite plumber with his practical guide to making your own jet engine. This is the first […]