Thanks Rick for the clear and practical response. All these responses help us as we determine how to set up a purpose driven rig. It also should cause us to dictate how we organize our plow days.
First, taking a look at the rig and deciding what your objectives are. I tend to be a "build it bigger, tougher, faster" guy. However, that isn't always the best thing in the end. I have to ask myself, "I may be able to cut a 6" furrow and plow at 4.5 mph with a well built 100, but the question in the end is, do I really want to do that on that machine." If so, more power to me!!! But it is input like you guys have shared in the last few posts that bring "the other side of the story" into focus. I know that cutting lawn on my diesel super is much smoother and more forgiving than I've experienced on any of my regular GT's but there is also something more "visceral" about cutting on a 50 year old block of iron that can't be touched." I'm with Earl, I may need to build one of each!!!
Second, as we left BPD IX, we talked about all the great times we had but we also noticed the unfortunate disparity between a full power, weighted down JD 430 and a STOCK 1962 CC Original. If the O is pulling an 8" plow at an average depth of 4" and going in first gear, he is gonna hardly seem to be plowing compared to the big JD who is running a Cat O and in the ground sometimes 10" (which is ridiculous I might add but I measured a couple of times). The O driver begins to feel like he is a nuisance to the big machines and it CAN take the fun out of it for him. If the O driver follows the big boys, he can feel like he is gonna tip into the furrow. This disparity of plowing depths doesn't allow the plow to work at its peak efficiency which further causes clumpy furrows, etc. So, we discussed if we ever hosted a plow day we would split the field into categories. Give the best (think easiest known spot) to the tractors running 10hp or less with 8 and 10" plows. Mostly those guys will be running in first gear or around 3mph.
The large class tractors, all running 12" plows and having 18hp and up would get the toughest know spot of the field to play in. This would be primarily super tractors (1872 cubs, 400 series JD, 400 series Case, Bolens HT23 etc). Diesels, high hp gas in this area. These guys can plow at whatever speed they can handle and crowd each others space! If you have a small tractor that is well set up like Wyatt's Wheatland--rock and roll in this category. The last a likely largest section which would be your 12hp to 18hp tractors. Mostly running 10" plows and plowing at mid range speeds about 3-3.5mph.
Maybe this has been tried before with disastrous results but it seems like it would work well to me...
Now the rebuttles...