Prop for 4100 SCA

[gregorys]

I hit bottom with my prop (I hope that is my only damage). I am getting hauled Tuesday for an inspection. I can’t figure out what props I have on my boat. 1999 4100SCA with two 330 HP Cummins engines with ZF transmission, I think with 1.96 ratio.

Just trying to prepare myself.

Thanks!
Scott

[PJHoffnet]

Same boat, same year, same engines/transmissions ...
I run 24X26X4,HS,(RH or LH),NI,2"SHFT,6"HUB

I had an unplanned encounter with a little sand spit back in 2019 ... cost to 'straighten out' both props was $1,092.14.

[gregorys]

Thanks PJ!
I have a mobile mechanic coming now that I have her out of water to help with the removal of the props.

I am thinking I might need a new prop.

[mmwjr]

Ouch! That’s pretty mangled.

[PJHoffnet]

Originally Posted by gregorys

I am thinking I might need a new prop.

'fraid so ... oh well, what's done is done. Hoping shaft, shaft seals, etc. are ok.

[shrew]

Wow!! I'm always amazed how clean bottoms and running gear are in freshwater.

[gregorys]

Originally Posted by shrew

Wow!! I'm always amazed how clean bottoms and running gear are in freshwater.

I have been in the water for less than 72 hours and just painted the bottom.
Scott

[gregorys]

Originally Posted by PJHoffnet

Same boat, same year, same engines/transmissions ...
I run 24X26X4,HS,(RH or LH),NI,2"SHFT,6"HUB

I had an unplanned encounter with a little sand spit back in 2019 ... cost to 'straighten out' both props was $1,092.14.

I am learning more about props and the difficult removal process.

Correct me if I am wrong if you could on what the prop details means.
24 inch prop
26 pitch
4 blades
HS - not sure what this means
(RH or LH) - is right hand on the starboard side and LH port?
NI - I don't know what this means
2"SHFT - 2" shaft
6"HUB - area the shaft goes into the prop is 6" in diameter

I see "cupping" on some prop websites. What does that mean or do I really don't care and go with no cupping?

Thanks!!
Scott

[gregorys]

Props have been repaired and look great! My total cost was $2,500 cash. I used Midwest Boat and Prop out of St. Cloud, MN. I live close enough that I drove the props there and returned to pick up. It was a 5.5 hour drive each way, but completely worth it.

The business was great in their communication and gave me a tour of the shop and tool that was used to fix the props. I did learn there are different classifications for props. Class, 1, 2, 3 and S. The damaged prop didn't have enough blades left to be scanned and the undamaged prop was outside of class 3, meaning the pitch was way off.

I have installed the props and waiting until after July 4 to launch the boat again due to limited dock space during the holiday.

I have attached selected pages from the report they provided.
https://surfandturfretirement.files....cted-pages.pdf

Photo of the props in the back of my car.