Propeller Duoprop help

[JoeTe]

Hello everybody. I had a problem with my propellers (they are broken) and I need to buy a new one. My boat is a 23 ft with volvo penta 5.0gi v8 250hp and duoprop DP-SM 1.95 drive. Actually my boat have a D4 propellers and boat go until 25-30 at 5000rpm (with hull clean). So I would like go for propeller for more speed (although I lost some acceleration) and go cruiser faster with less rpm.
So do you thing could be better go to D3 kit or D5 kit? (Really I don't know so much abouth propellers). I found a D5 kit second hand cheap so if D5 is for more top speed could be good.. but I need help because I don't want to throw money.

Thank you in advance!

 

[Momac]

D5 will potentially give higher speed at the same revs.

 

[[2068]]

Hello everybody. I had a problem with my propellers (they are broken) and I need to buy a new one. My boat is a 23 ft with volvo penta 5.0gi v8 250hp and duoprop DP-SM 1.95 drive. Actually my boat have a D4 propellers and boat go until 25-30 at 5000rpm (with hull clean). So I would like go for propeller for more speed (although I lost some acceleration) and go cruiser faster with less rpm.
So do you thing could be better go to D3 kit or D5 kit? (Really I don't know so much abouth propellers). I found a D5 kit second hand cheap so if D5 is for more top speed could be good.. but I need help because I don't want to throw money.

Thank you in advance!

If you go with a D5, you need to check that the engine will still reach max rpm at the top end, or "cruise faster will less rpm" will just mean that you end up overloading the engine.