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Old 02 August 2006, 12:54   #1
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4 Blade prop versus 3 blade

Does anyone know if a 4 bladed prop of 17p is will be the same as a 3 blade 17p ? or should I go down a pitch .
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Old 02 August 2006, 14:02   #2
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Originally Posted by LURCHER
Does anyone know if a 4 bladed prop of 17p is will be the same as a 3 blade 17p ? or should I go down a pitch .
depends what you want? same material? etc etc! if its same ish prop an extra blade will increase ur acceleration but may effect top end!
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Old 02 August 2006, 14:50   #3
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4 bladers are great for torque i.e. a heavy boat that needs thrust quickly. Like a dive boat or someone who carries almost max payload of say freight.

We fitted one and havent looked back. The performance is not the same for similar sized 3 blader. We took the advice from Steel Developments and it was very accurate.

For our application as a dive boat the only question I might ask other dive boats is why they havent got a 4 blader fitted. That said as yet I've not seen many 4 blade stainless props which would be the next logical but expensive step for us.
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