I don't mean "good with your hands" in THAT way... keep that mind of yours in PG for now.
Anyway, this is the only reason I know I'm an ENTP and not ESTP. (Of course, I know Ns that kick ass at building/fixing things, and Ss that suck ass at it. But let's generalize for the sake of simplicity.)
I'm completely USELESS with my hands. I don't know any of the different components and parts/functions/arrangements of car engines. I've never built a model airplane. I even suck on those IQ test things where you have to fill in the pattern diagrams. :steam:
It's not necessarily just because I'm female. My ISTP chick friend can fly a plane. My INFP male friend, however, is worse than I am. He barely knows what to do with a set of Legos. Have him screw a lightbulb, and he just sits there gawking at the lightbulb like he wants to cry. My INFP father is the same way.
I didn't grow up with anyone who was good at that kind of thing. Were you SPs taught about mechanical things, or were you just BORN knowing how to change a tire?