Lost a blade on my 3 blade Mercury Lightning ET and ......

[Baja170]

I don't know for sure but I do know that my thinned, cupped Bravo1 that I bought new never ran then paid 485 with shipping to get it worked by the best known company that is pretty famous did not last 1 time running the boat before it shed a blade right at the hub. Pretty scary experience I don't want to happen again. I was only turning 5600 RPM as well on a 500EFI on a Cougar MTR 22.

I know from the source of my Intimidator that the ET was time limited and I have since replaced it with a Mazco RE4. I won't be selling it it is now wall art in my shop. Looks great on the wall and will never shed a blade unless I die and my wife sells it which I think I am going to engrave on the back of the blades, DO NOT BUY THIS PROP.

[XstreamVking]

Even seen thick offshore cleavers throw blades. On the other hand seen thinned blades that ring like a bell run for hundreds of hours....
You just can't tell....

[WillySteve]

As Stated.....Grind the sharp edges and file smooth, use a rat-tail on the "V" in the upper corner to make a radius instead of a sharp corner.
Remember that cracks start or continue from a corner or crack that is not radiused!
Check the runout on your prop shaft!

[87starflite]

Dont want to jynx it but my 4 blade mercury pro et probably has 500 hours on it. Only prop i have used for the last 5 years and my friend ran it 2 or 3 years on his boat before he sold it to me. Excellent prop

[Stålproppen]

Thanks for all the good input!

I did get a hold of a new Sporty (sorry Marcus, saw your post a little late), so I will do as you recommend, letting a pro fix the Case and run a almost brand new sporty the rest of the summer. Seems like I was lucky nothing else on the case took a beating.
Btw,
I ran my old ET as my number one prop for four years (more than 2,000 miles).

[Markus]

I know from the source of my Intimidator that the ET was time limited and I have since replaced it with a Mazco RE4

Mazcos (as well) are known for throwing blades...

[phillnjack]

I would 100% get a file on there before it rips open more .
No way would I use it like that as it will definitely tear and then who knows what else will get smashed.
a nice bit of welding will put that right inside 10 minutes, make it thicker then taper it down with elbow grease and a hand file then wet n dry.

As for the prop shedding a blade, that is very poor quality, I dont care who make it that is very poor.
why on earth use a prop that is known for shedding its blades ? that is crazy.
you wouldn't drive a car if you were expecting the wheel to fall off would you ?

high performance is useless if it dont make it the finish line.

[ssv1761982]

Can anybody name a high performance prop that has not shed a blade?

[David]

Are the new Promax props robust? I have a friend who says the Promax prop is less likely to break. I ran one for 20 minutes without incident

[XstreamVking]

Haven't heard of many herrings going to pcs.....