I have a 1996 28'TE. The previous owner replaced the original prop with a 4 blade prop.
Is this better for the boat? I have a Volvo Penta 7.4Gi gas engine.
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four bladed prop
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- Deckhand
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- gerygarcia
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I'm not an expert
I did find this website explaining advantages and disadvantages for both
http://www.powerboat-training.co.uk/art ... 0yours.htm
Here is a copy and paste from the article:
3 Blade vs. 4 Blade
The 3 blade prop has been the design of choice for performance boaters for many years. It works well, provides good acceleration and control and excellent top speed performance. In the past few years, however, the 4 blade propeller has been gaining in popularity due to it's different handling and performance characteristics.
The 4 blade configuration is popular with boaters who are looking for a great hole shot, good acceleration, and strong, predictable low to mid range handling, at a possible expense of top speed.
This group of boaters includes certain types of fishing boats, ski boats, and boats that are used in rough water conditions.
In general, when replacing a 3 blade propeller with a 4 blade propeller of the same diameter and pitch, expect a loss of 50 to 100 rpm at full throttle (with a corresponding decrease in top speed). This is due to the fact that 4 blade propeller has slightly more drag in the water.
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I have a 28TE with a diesel Peninsular 280 HP Turbo
3 bladed Nibral, 18 LH 17 with cup
Maybe 4 blade is better for gas engines. Maybe he was looking for better fuel efficiency for his way of boating
Gery Garcia
I did find this website explaining advantages and disadvantages for both
http://www.powerboat-training.co.uk/art ... 0yours.htm
Here is a copy and paste from the article:
3 Blade vs. 4 Blade
The 3 blade prop has been the design of choice for performance boaters for many years. It works well, provides good acceleration and control and excellent top speed performance. In the past few years, however, the 4 blade propeller has been gaining in popularity due to it's different handling and performance characteristics.
The 4 blade configuration is popular with boaters who are looking for a great hole shot, good acceleration, and strong, predictable low to mid range handling, at a possible expense of top speed.
This group of boaters includes certain types of fishing boats, ski boats, and boats that are used in rough water conditions.
In general, when replacing a 3 blade propeller with a 4 blade propeller of the same diameter and pitch, expect a loss of 50 to 100 rpm at full throttle (with a corresponding decrease in top speed). This is due to the fact that 4 blade propeller has slightly more drag in the water.
_____
I have a 28TE with a diesel Peninsular 280 HP Turbo
3 bladed Nibral, 18 LH 17 with cup
Maybe 4 blade is better for gas engines. Maybe he was looking for better fuel efficiency for his way of boating
Gery Garcia
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- Gold Member
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- jcollins
- In Memorium
- Posts: 4927
- Joined: Sun Apr 16, 2006 9:05 pm
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- Location: Seneca Creek Marina
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3 blade vs. 4 Blade
Hi, I'm a new member of this group and also a new Albin 27 owner who's busy learning.
I've talked to some who say the four blade prop can, in some cases, reduce vibration and quiet things down.
Does this sqare with the experience of others?
Jim
I've talked to some who say the four blade prop can, in some cases, reduce vibration and quiet things down.
Does this sqare with the experience of others?
Jim