I do not have a definitive answer. Much of this is conjecture -- taken from some comments made years ago when we first found a pic of this particular Cub. There were a couple similar ones on
at the time .. I wish I had the pictures ... but I wasn't as anal then as I am now about saving pics of interesting Cubs and Cub modifications/conversions. There are references to the different threads in the post above.
As Jim said, there is no sure proof...
Jim Becker wrote:And that appears to have been purely speculation. That makes 2 threads. One more and we'll have a full-blown rural legend.
And he may be correct. It is just something I remember.
From what I understand and remember from visiting various orchards in southern California when I lived there back in the late 70's, many of the operations had to have tractors specifically modified to fill some of their requirements depending on the operation. We are all familiar with the funny looking Hi-Crop A's etc., from California so this one is not much different. The Avocado Cub as it has been called (I did not coin that name btw), needed to be very low to clear the lowest fruit bearing branches of the avocado trees. Aside from that I have no clue. This is all just anecdotal as I have never personally seen a Cub that I can remember in these orchards/groves.
I googled Avocado Orchards
and one of the hits is this one. California Avocado Grove Tour
. In this video you can see how close to the ground the fruit grows.