Jam bo – fmh is spot on.
If you are coming down Jobbers Row past the scout hut you pick up the tarmac road, at the end you probably carry on down to Sheepstor village, however turn left & follow the road up the hill, past Ringmore Cottage on the left & over the cattle grid then immediately turn right & go down the hill following the stone wall.
It starts quite wide, then goes into two deep ruts, then down to a singletrack gully & a fast downhill. At the bottom follow the road, turn right at the T junction & down the hill to Meavy. It's worth the effort to get to the start & it's a stonkin downhill just be careful of the low tree branches on the way down.