Need Help With Hole Spacing On 3-point Stabilizers Please.

[SPYDERLK]

If you use two different hole spacings,,
you will be able to get adjustments of far less than 1/4" per pin move.

Example (I ain't saying this is right)
On the exterior part, use 1" spacing
On the interior part, use 3/4" spacing.
Adjust to where you want it, then select the holes that happen to line up!!

I have had my tractor since 1995,, I have never adjusted them
so I could care less if they were welded.

I doubt they have been moved in the 35+ years life of the tractor,,
at least, they do not look to have ever been adjusted,,,

Below is probably the worst system EVER devised,,
inside the arms, turnbuckle chains.

A chain has to be un-pinned, and removed,,, to remove an attachment,,
or, the arms must be left VERY loose,,, :confused2:

Vernier hole spacing.
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[WantItDoneRight]

And here are some photos of my B9200 HST 4WD showing the existing arrangement (yes, there are some non OEM components currently in use - the shiny nut and bolt in place of the stock pin and split pin) as well as the location of unused mounting holes (circled in red - apologies for the yellow debris that's lodged in the middle of the three holes beneath the PTO, I didn't notice it while taking the photo) that could potentially be used for mounting telescoping stabilizers inboard of the lower arms as well as a simple depiction (a crude red line) showing approximately where I believe a telescoping stabilizer could be spanned. I also include a cropped image (blurry) showing a close up of the three mounting holes beneath the PTO).

 

[WantItDoneRight]

FWIW the distance between the left-most mounting hole beneath the PTO and the aft mounting hole in the left lower arm is 17", ample space for a lengthy-enough telescoping stabilizer.

Alternatively, is the stabilizers were mounted in a crisscross manner (so, left-most mounting hole beneath the PTO to the aft mounting hole in the right lower arm and right-most mounting hole beneath the PTO connected to the aft mounting hole in the left lower arm) - not sure if this would be advisable given the potential conflict with a drive shaft mounted to the PTO, but perhaps it's an option - then the distance between the mounting holes approaches 20" - more than enough space to accomodate telescoping-style stabilizers.

 

[WantItDoneRight]

OK, I've seen the error of my ways. In all my fantasizing I failed to comprehend the nature of the relationship between the point in space in which a three point hitch's lower arm pivots relative to where it's attached to the tractor (so the "tractor end", as opposed to the "implement end") and the point in space where the tractor-end of a stabilizer pivots.

The reality is that these two points must be either exactly the same (of course this can't be since the two ends can't occupy the same space) or to the immediate left or right of each other. The respective points cannot vary from each other either fore and aft or up and down since any difference in either if these planes would create the catastrophic situation whereby the distance between the two mounting locations (for the implement-end and tractor end of the stabilizer) would shorten or lengthen (increase or decrease) as the implement was raised and lowered. This is a problem because once the length of the stabilizer is set, which is an essential step when attaching a given implement), it cannot change (the stabilizer is not spring loaded so its length remains fixed once it's length is set). Movement of those two points in space either left or right is OK since this differentiation doesn't result in the effective lengthening and shortening of the stabilizer - the effective length remains constant.

In the case of the layout of the B9200 there simply isn't the option of locating the tractor-ends of the stabilizers inboard of where the lower arms connect - the latter are tight up against the various castings that comprises the rear end of the tractor. Which is why the stabilizers are located outboard which, along with the short rear axle, end up severely limiting the placement options of the stabilizers.

All of which is a complicated way of saying that the only method for utilizing telescoping stabilizers on a B9200 is to first add wheel spacers (to increase the effective length of the rear axle) which will create enough space between the rear wheels to permit sufficiently long-enough telescoping stabilizers to be mounted outboard of the lower arms of the three point hitch. I say "sufficiently long-enough" because trying to fabricate teeny tiny short telescoping stabilizers (as direct replacements for the teeny tiny short turnbuckles) will result in two stabilizers which aren't fit for purpose. Their diminutive length (a limitation of the distance between the stock mounting locations) will not allow for sufficient adjustability - no matter how close together the pin holes are drilled.

What I've learned (thanks to some correspondence with Mark at Stabilworks) is that telescoping-style stabilizers need to be of a sufficient length to allow for enough variation via the fixed number of pin positions (in contrast to a threaded turnbuckle-style stabilizer, they are not infinitely adjustable) and one that's ~9-12" in its shortest configuration and ~11" in it's longest just won't allow for that. Given the absence of sufficient adjustability, the user will quickly encounter the situation whereby they are able to set one stabilizer to the desired length but not the other - there will be a mismatch which will physically prevent the user from being able to get the adjustment pin in the other stabilizer.

Which now has me wondering about something like:

SELF Load Binder | Wrench-Operated Chain Tightener

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[WantItDoneRight]

So, according to the following, npalen did end up fabricating telescoping stabilizers for his B9200:

3ph Stabilizer Build - Show and Tell Pics

The telescopic type stabilizers are not available for my Kubota B9200 as the space envelope is very limited for conventional lengths. The stock stabilizers are turn buckle type and hard to get at for adjusting because of the tight space next to the tires. I visited with Mark Hodge...

www.tractorbynet.com

 

[WantItDoneRight]

One additional note: given the adjustment limitations inherent with such a short set of telescoping stabilizers (their diminutive length is why Mark won't endorse their use) and as a way around having to decide upon an optimal hole pattern is to simply only drill holes that correspond to the implements in one's possession (and maybe another set that opens the lower control arm up to their widest point to facilitate the initial step of implement attachment). Additional holes an be added at some future point should the need arise (either by the current or some future owner). Why needlessly overthink things, right?