First off, apologies Don - I wuz starting to think you were "that dumb" (which still beats "stupid" - "dumb" is usually curable by learning, where "stupid" usually isn't
Second, I WAS "that dumb", never knew Kubota's smaller tractors didn't have position control (all my stuff is old, see my list)
Anyway, if I read your comments right your 3ph has only 2 modes, float or lift? See if this would work to get repeatability -
Set your gear up STATIC, with rake at depth (and attach angle) you want, adjust gauge wheels so they're on the ground - then set some blocks UNDER your lift arms, and try to lower the 3PH FURTHER - this is to make sure there IS no "power down" (you already "fooled me ONCE" :laughing
If the above is TRUE, you may be able to rig a couple chains and/or a turnbuckle of some sort, so that your 3PH can NOT go any LOWER than those "snubbers" - if that works, then you would just raise the 3PH between passes/turn-arounds, and lower it ALL THE WAY for the next run - that should get you the repeatability, and it's a few $$$ cheaper than a new tractor
any confusion on what I said please ask... Steve
They are mounted to the fame of the rake. There is a tiny bit of wiggle room due to machining but basically no they don't float.Unless your gauge wheels "float" also? Are they mounted so they're in a FIXED position, or ???
When I had a landscape rake and gravel drive, I leveled the rake frame (parallel to ground) with the toplink, then adjusted the gauge wheels to the depth desired. Lowered the 3pt so the gauge wheels are taking the weight of the rake, and off I went. I never had any leveling issues.
Don, I noticed that your machine has a sub frame for mounting a backhoe - you sounded like you're about to give up (or go a different route) on this problem, and if it's simple enough and will work for you, good deal.
With what's available to me, I would have your problem solved in about a day of messing with it and (literally) running down the road :laughing:
But I have quite a few tools, including 2 MIG welders, 2 stick welders (newer one also does TIG), a plasma cutter and oxy/acetylene torches, a fairly serious milling machine, drill press, etc, and several decades of experience including heavy industrial maintenance, plus running a 12-man maintenance crew the last 10 years before retiring...
NONE of which will make any difference because I have NO IDEA what YOU have available to you, either in experience or equipment availability -
Sooo, if you want to pursue this I can help, but to do that I'll need to know what YOU can (and WILL) do, what's available to you, etc - depending on your local availability of common tractor hitch parts, this could happen using (mostly) just off the shelf parts and maybe a bushing and a couple pieces of 1/4" thick steel with 2 holes drilled in them.
Let me know if you wanna take this further... Steve
The washboard problem, if you can't get around it by multiple passes in both directions, can only be solved by basic geometry - for any hitch-mounted implement, the shorter your tractor's wheelbase and/or the longer the distance from rear axle to implement, the worse it's gonna be.
The only way I know to get around that one is to steal ideas from a REAL land plane, or build some sort of NON-3PH drag - basically just a pair of skids wide enough to support the weight of the drag, with cross pieces (blades) you can (usually) adjust for height til it works for YOU - google images for land plane, you should see a few million images (some of which might be small enough for less than a 600 horse tractor)
You already have the box blade, which in its stock form will be as frustrating for you as the rake - there are a few threads on here where people have modded their box blade with some long skids (cheaper than buying a LPGS, and done right works pretty good) - if you're interested (and especially if you want an excuse to learn to weld) PM me your email. I can send you 108 pics of stuff like this (just the ones in my "land leveling" folder
). A lot of 'em I got right here, but couldn't tell you whose they were - plus, this site is too clunky when you try to post more than a handful... Steve