not much done today. been fighting autodesk inventor constraints. and taking 1 step forward 3 steps backwards :/
for the transport wheels see last diagram above. thinking of just mounting the cylinder portion of a hyd cylinder. directly to the main frame. so the cylinder is not able to actually freely move in any sort of direction. and lust let the Rod go down and connect to the sub-frame that the transport wheels are connected to.
other solutions for transport wheels in this thread. just causes to much free play. and end up chasing tail around. something bends here, or holes wobble out, pins slightly bend, and things just start falling apart. and binding up on to one another. then the "swing out" of other solutions for transport wheels. is a big problem when it comes implements. more the transport wheels "swing out" further the implement has to be swung out. so the implement does not bind up and come back up on the transport tires, taking both tires and portion of the implement out at the same time.
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trying to figure out what might be the best approach to "beef" up things. so the rod of the hyd cylinder does not need to be overly sized diameter up beyond comprehension, let alone $$$. also need to come up with a better solution than using approx 40" inch extend/contract hyd cylinder.
thinking C channel metal bar. with wheels in it, that first come to mind, but i am not about to fight a stinking little wheel. that is catching and tearing things up. on a conveyer belt ok. enough little wheels mass produced. but beefer wheels for the C channel track metal bar for transport wheels... first reaction, is.... see how much explosive it takes or how much needs to be cut out, in order to get things operational and in working order.
i am a little on edge with using a pipe inside of a pipe. not actually a hyd cylinder. but just a pipe inside of a pipe. to help transfer forces between transport wheels and the main frame and vise verses. but with pipe, once you start to get a bend and pipe begins pinching. ya in trouble quickly. on other hand pipe inside of another pipe. allows nice even surface all the way around to absorb and transfer stresses and force from multi directions.
perhaps a I (capital i) or T beam, inside of a C channel beam. and toss some grease zerks in. i would get away from pesky wheels in the track of a C channel. gain strength in 2 different axis (X,Y, and not Z). Z = hyd cylinder itself. if something does begin to bend to pint of pinching. it would most likely cause the C channel beam to open up some. and some relief valves for the hyd cylinder go off. but would most likely still be able to raise and lower the transport wheel. it may be on its final leg. but perhaps enough to get things back to the shop so it can be repaired.
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I or T beam inside of a C beam, i like it.
but what sort of configuration to put them in, and placing the hyd cylinder into the mix........
off to autodesk inventor.... to hopefully draw something up that is possible.