F.E. Myers Air Blast Orchard Sprayer Information

[r8f1k]

Ok, so I was able to source a set of NOS Myers piston cups. They are a whopping $92 a piece. I was able to get the OD dimensions of the original units which is 2-3/16”. That seems to track with them being a little tighter than they currently are and how much they have potentially worn. The units from abroad are 2.25” making the difference between them, .0625”. I am betting that I can mount the cups in there “mounts” and shave off .0625 on my lathe to make them 2-3/16”. Thoughts?

 

[airbiscuit]

Could you post a pic of these piston cups? Alternatively, could you sand off 1/16" off those piston cups?

 

[airbiscuit]

 

[r8f1k]

These are mine

 

[r8f1k]

Could you post a pic of these piston cups? Alternatively, could you sand off 1/16" off those piston cups?

Here is a photo of the units from overseas. There are 2.352" so my math is a little off from my previous post. The amount that would need to be removed is 0.1645", a little more than 1/16", but not by much. Sanding the cups could be a good way to go about it, but is there also a way to make/keep them smooth?

 

[r8f1k]

This looks good for leather, but the rubber on these piston cups is pretty thick

 

[airbiscuit]

Are the imported cups cheap enough you could experiment with one on reducing the diameter on your lathe?

 

[Seven Gables]

It looks to me like the cheap overseas cups have a thinner wall than the correct OEM cups to begin with. The other issue it looks like the internal diameter of the Chinese cup is bigger than the correct OEM cup. I think its important that the securing nut fits the inside diameter of the cups to give support to the cup walls. I think you’d be back to where you are now with a leaking pump.
I’d buy the OEM cups and be done with it. It’s not like you’re going to be changing them out once a season, with proper care they should last you many years especially since you’re only spraying 6 acres few times a year.

 

[r8f1k]

Are the imported cups cheap enough you could experiment with one on reducing the diameter on your lathe?

$2.90 each

 

[r8f1k]

It looks to me like the cheap overseas cups have a thinner wall than the correct OEM cups to begin with. The other issue it looks like the internal diameter of the Chinese cup is bigger than the correct OEM cup. I think its important that the securing nut fits the inside diameter of the cups to give support to the cup walls. I think you’d be back to where you are now with a leaking pump.
I’d buy the OEM cups and be done with it. It’s not like you’re going to be changing them out once a season, with proper care they should last you many years especially since you’re only spraying 6 acres few times a year.

Given the price point of the overseas units, I am probably going to buy both. I would experiment with the overseas units to see where it gets me. I would also make an offer on the NOS units. Let's see what happens!