After studying your pics - I finally got the idea exactly how to plan to make the roll cage. All I can say is you got it well planned out for ease of removal with the flange. I like the inner stub idea, but wonder if the tubing wall thickness is really necessary? it seems pretty substantial. But what do I know?
I just have a few questions though. Have you checked with TSC for those longer ubolts? My TSC has various sizes and one of them look like exactly what you might need. second, I am a little confused on the plug welds. I understand welding inside the slugs, welding outside corners but what are you planning to do? cut slots to weld slugs to tubing? third, from the flange to tubing to corner before going down to upright post, how big of that corner are you planning to make? I was thinking rolling that corner on bender would look nicer and gusseting it a little on inside corner? next question is the flange that I see you have ready. is the canopy going to be able to clear it and I think it might be a tad to big. As you mount/enter the cab or sit in the BH position, is there enough room for your head to lean to side and back up looking as you dig with BH?
Inner wall 'stub' as being necesary? Probably not...I would rather be safer then sorry.
Those rear anchor points will take a lot of stress if the tractor were to roll, so
will the unmolested ROPS.
Have not looked at TSC for UBOLTS, my people make BEAUTIFUL UBOLTS to order.
They come w/ Tall Nuts and Extra Heavy Washers. Custom made at about 7bux each. To
me it is a no brainer. These are not fake UBOLTS w/ a 3/8"-16 nut...that is not a real
UBOLT, or should I say, not what I consider a Professional Grade UBOLT.
Plug welds 'may' get tossed, it would help to marry the outter to the inner.
That 'corner' you speak of is not 100% written in stone yet. I may ditch the A Pillar as I drew
it in my "Rough Sketch" that shows the flanged connection, and go w/ a "U" clear around
the top, then down w/ 'A' Pillars. Those angles will be strongbacked, probably w/ dimple dies and
holes to lighten them up, yes, on the inside corners. ( I am trying to awnser all q's reading along here.)
I have been him-hawing about those front pillars and at what angles I will go with, for days.
There is more going on then meets the eye. There are some other features I have not
spoke of yet as well... :shhh:
No, flange is not to big, it clears the radio box and canopy no problemo.
There is nothing that intrudes on my headspace.