Legos, Cars and Engines

 It started with Lego car sets.  Allen wanted to build a Ferrari and then another one and then another one.  Lego sells kits to build these cars.

Then Allen decided to use his random Legos to build his own car, complete with car doors that opened and closed.

Now he has moved on to bigger and better things.  He's built moving pistons.  He is powering them with a motor and experimenting with gears.  He has created a clutch and can move from first to second gear.

The version pictured has only one motor but he has moved on to two now.  He has added gears to see how many revolutions he can get and when he hits the point of diminishing returns.

Allen loves explaining all this and as I am not at all mechanically inclined, I understand only a small fraction.

What I do understand is that he is good at this and he likes it.  That is enough for me.