The next subframe I built was for my Kioti CK30. This time I wanted
to make a 4-pt subframe with full encirclement of the rear axles for my
daily use tractor. I planned to make the biggest part of the subframe
(photo) permanently attached to the tractor VERY securely. The other
section stays attached to the hoe, and connects with four 1" bolts.
I published the thread here:
http://www.tractorbynet.com/forums/build-yourself/95092-yet-another-custom-backhoe-subframe.html
In general, I would say that 4-pt subframes are superior to the ladder
style, and offer easier removal and mounting. I also incorporated some
alignment aids to make it easier to get the hoe on. The 3-pt hitch is
not affected at all. I also used, and will continue to use, channel steel
that I have recylced from tractor shipping crates. Bolted connections
may not be the fastest to attach, but I will continue to use them as the
most secure structural attachment method. There certainly are tradeoffs.
Fortunately, my use allows me to keep the hoe on at all times, leaving
my loader for other attachments. It has worked well, but I do have to
monitor bolt tightness.
Next, I will get into the 4300 effort.