Might be getting back into a Yanmar

   / Might be getting back into a Yanmar #81  
I wonder why the top of that ROPS is rewelded? It looks like a decent job.
 
   / Might be getting back into a Yanmar #82  
I wonder why the top of that ROPS is rewelded? It looks like a decent job.

rScotty, Just think of the technology back then to form and bend. It was VERY LINMITED or VERY COSTLY. ;)

I too looked at that and wondered with my engineering mind. A few thoughts of possible reasons.

- The formed curved sections can be reused on ANY sized width of ROPS.
- The joint in the middle provides further strength as the larger SQ bar fits over the two other half's
- The sections below the rounds can be modified to fit other machines and mounting brackets.
- Lower costs for sure.

Welding would need to pass the AWS requirements and to pass the ROPS strict certification of the roll-over and bearing loads. So, the overlap joints are key here.

ROPS today with the foldable part are a modern version of sizing the ROPS top to lower section that fit multiple tractors.

Prior to either of these methods spoken above, ROPS were basically goal posts off the back just in a square corner shape.
 

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