Prop for 2120 F200

[Cheapie408]

I just replaced the 15x17 SS 3 blade prop with a 14.5 SS 4 blade prop but haven't gotten a chance to do a sea trial yet. Found a lot of threads on 150hp but not much to the 4 blade F200. With the original 3 blade prop it was fine with a light load but once I filled the tank, 4 guys and a couple coolers it was not great. Was doing 13k MPH @ 4k RPM fighting the swells the other day. Flat calm I'll be doing 22-23 MPH with the same RPM

smaller prop or lower pitch with a 4 blade?

 

[Cheapie408]

Hopefully someone with same boat and motor can chime in before I order another prop.

Did a sea trial with the 14.5x17p 4 blade prop couldn't get the boat up to WOT

Cruise 4200 RPM @ 27mph
WOT 5k RPM @ 35mph

If my calculation is correct, I should be getting a 14x15p prop to get it back up around 6k RPM.

 

[Ozdogg]

Cheapie408,

Did you ver get an answer on this? I'm looking to change out the stock prop on my F200 and was looking for the best available prop to install.

 

[Cheapie408]

I stuck with the 14.5x17p, In the ocean on relatively calm days, i was able to get her up to 5600 RPM. A little lower than i'd like but I bet I can get the RPM up in the river where it's calmer.


Have to say though, my load is always heavy, 4 guys and ice I'm ass heavy but the prop handles it quite well. I just added a permatrip last week still yet to be tested. It'll be interesting to see what happens once I drop the Yamaha 9.9 in the back in a few days.

 

[Ozdogg]

Good to know. I also installed a permatrim and it absolutely helps.