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+--- Thread: 3 blade vs 4 blade (/showthread.php?tid=6274)
3 blade vs 4 blade - OurHighLife - 08-27-2019
Hi all,
2001 38 open, twin Cummins 450, ZF transmissions 1.719:1
What is the difference 3 vs 4 blade?
Ran a 4 blade boat: 2200RPM=22kts
2400rpm=24kts
WOT 2665rpm=27.5kts
How does that sound?
Thanks,
Andy
RE: 3 blade vs 4 blade - ReelMagic - 08-27-2019
I have a 2003 38 Open w/450 Cummins as well but with 24x28 3 blade nibrals w/full cup.. At 2100 I'm doing 21.5knots. At 2200 23-23.5knots and wide open, 2600, I'm at 27-28 knots. Very similar to your analysis. Boat came with 3 blade but have heard several owners switching to 4 blade. Was told they are smoother, less vibration, although at all speeds mine feels smooth. Not sure what the real difference is. M2C
3 blade vs 4 blade - tprobst - 09-28-2019
Any body know the cost of four blade
Prop.
Sent from my iPhone using Tapatalk
RE: 3 blade vs 4 blade - greylion - 09-29-2019
About $7000 for the pair