A pretty good impact, it gets the job done. I wonder how long it would take for the arm to get excessive play in it. They need to press in a brass sleeve in the arm for the fulcrum pin. The gouges in the PJ bend could be to help disperse the spray to take advantage of it for close-in coverage.
The zinc sprinklers that I have which is a bunch that are worn out, which was the way I got them. There appears to be a part of a plastic sleeve in there, but it is the zinc that gets worn out from the movement. I agree that a brass sleeve in the arm shaft would help the arm from wearing out like it does. I have a bunch of different designs that I have paid good money for and the result is the same. Zinc designs are for me do not buy recommendation. They do serve their place and get the job done, but for how long is the great question.
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Good analysis of these sprinklers.
you might be surprised as there is more to come on these zinc sprinklers.
A pretty good impact, it gets the job done. I wonder how long it would take for the arm to get excessive play in it. They need to press in a brass sleeve in the arm for the fulcrum pin. The gouges in the PJ bend could be to help disperse the spray to take advantage of it for close-in coverage.
The zinc sprinklers that I have which is a bunch that are worn out, which was the way I got them. There appears to be a part of a plastic sleeve in there, but it is the zinc that gets worn out from the movement. I agree that a brass sleeve in the arm shaft would help the arm from wearing out like it does. I have a bunch of different designs that I have paid good money for and the result is the same. Zinc designs are for me do not buy recommendation. They do serve their place and get the job done, but for how long is the great question.