We had a minimum budget for a sprinkler system, when we moved in here in 2004, so I designed a simple system where the heads are above ground in some places, the plastic pipe is underground, and with a regular manifold and all. But I used gear drive heads, so as to cover the maximum area, without having the whole yard trenched for those small heads, which appears to cost the most. The problem is, those gear drive types only seem to last a year or two, then they quit rotating. So I'm thinking of ...
