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Author Topic: Propeller - spoilt for choice?  (Read 989 times)

sailorboy61

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Propeller - spoilt for choice?
« on: September 27, 2010, 02:42:14 PM »

Next step in my tug build spending spree are the propellers......

I'm not planning on any super competition towing, so what props should I choose; I have steerable Korts and need a 70mm prop.

Now should I go straight for the second mortgage with 5 blade Kort props, or how does performance rate with 4 blade Kort props, or 4/5 bladed 'standard' props, bearing in mind the price comparison is from over 40 for a PropShop 5 blade kort, down to 17 for a 5 blade, 70mm Raboesch Type A.

Ok I understand you gets what you pays for.... but is there a really noticable difference at the end of the day......

What do you serious competion Tuggers have to say??

Thanks
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kit1947

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Re: Propeller - spoilt for choice?
« Reply #1 on: September 27, 2010, 03:43:13 PM »

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Pirate

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Re: Propeller - spoilt for choice?
« Reply #2 on: September 27, 2010, 04:51:12 PM »

I agree a four blade is more than adequate.
 Five blades increase power output by about 20%.
' Prop shops' are without equal in my mind   BUT  ' George Sitek's' are by far the most economical if you are on a budget and still want a proper Kort prop.
 A standard prop in a Kort is very inefficient.
A plastic prop by Raebosh is  seen by many as a perfect compromise. Though of hand I do not know there sizes.

Just my opinion

Pirate
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