you may be smart for your age, but there are some geniuses on this site.  master mechanics, engineers, and machinists.   there are a lot of people you may be smarter than, but if youre looking to outsmart someone or tell them how to do something, then youre in the wrong place.   you know a lot of theory.  and if youre 15 or 16, you have no experience. trust me, i thought i was smart when i was your age too, now i realize ten years later, im still slow compared to guys around here and guys i've worked with  i went to different tech schools totaling over 4 years, but i learned more in 6 months of being in an actual shop than those 4 years together.   in theory, a motor will never fail and will last forever