Ok, I’m confused. The prop on my UL-19 is listed as a 1.7x1.6

From what I can tell with most other prop manufacturers , the first number is the pitch and the second is the diameter.

ProBoat seems the other way around. My prop diameter measures out at 1.7”, so I’m guessing the pitch is 1.6”. Opposite of what I thought to be true.

So, does this mean the optional prop (PRB282028)recommended by ProBoat to use (1.4”x1.65”) has a diameter of only 1.4”? Seems a bit small.

Anyway, due to my confusion, I ordered a x442 (1.4x1.65). It has the expected 1.65” diameter. It also works great.