Just bare in mind that these drills do require maintenance and that a gap to remove a gauge wheel axle is a handy thing.We predominantly drill into pasture and want a narrower row spacing .
By shifting to the 3 inch gauge wheel we should be able to squeeze in 2 extra row units.
Might be more trouble than it's worth.We were running the needham narrow spoked gauge wheels. We have gone back to a wider tyre still spoked but find the needham tyre was too hard.
Still running a us sourced rim and spoke. The jd ones don’t last in stones.
Know of a drill In nz that has been narrowed up using the narrower tyre. It worked ok.
I agree with you entirely as that's what we have successfully done for the past 25 years.I drill around 1000ac of pasture (clover and arg) every year. Both tiller out and provide a perfect sward. Never once cross drilled. Long irrigation bays with checkbanks every 70m make it impossible .
In the clay country the John Deere with a serated closing wheel should do a better job than an Allen’s custom.Might be more trouble than it's worth.
Allen drills are all the talk up here at present but at the end of the day it's still just a triple disc albeit with the option of a 5 1/2 inch row spacing.