Originally Posted by greenology
My thoughts are it was a mix of poorly prepared surface & ground has settled with a little erosion over time (even with the turf). Ive been cutting this for nearly 5 yrs now & has been this way for that time, however the owner has had it top dressed in the past & has also mentioned the idea of doing it again (so he can have it cut lower) can cut any lower than I do without cutting into dirt on the top of ruts. So that will be a welcome relief if he ever does.
It may well have been a paddock for growing vege's, so being cultivated for a very long time would mean it needed a lot of prep work to prevent it from settling, the ruts are all inline across the length of prop so I cant help wonder if its related to old veg growing mounds. Alternately top dressing for a few yrs, but being costly & not the home owners priority I can understand why this doesn't get done.
The first pic was taken of the pool a few yrs ago but just so happens to show some of the ruts by looking at the low cut spots, which is of coarse the top of each rut. Then the second pic, not taken for this purpose but it shows some more of the ruts. The biggest problem with these is they are covering 80% of the place.
I would say your deduction is probably accurate, when the mower is crossing where rows were possibly once cultivated makes good sense as to how this came about.
Originally Posted by skew
Leave the air pressure at 15 psi rear and 25 for front. Any less the tire will flex and this will cause the deck to lower and possibly scalp on bumps. Leaving at correct pressure makes the suspension work as designed and the deck will follow the contours of the ground.
This is a very good tip, and one that makes sense when thought about, Green let us know what you find when fooling with the air pressure.