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Old 04 May 2005, 18:26   #1
Country: UK - Scotland
Town: wemyss bay
Make: humber assault 4.5
Length: 4m +
Engine: mercury 50
Join Date: Apr 2004
Posts: 44
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help!! more prop questions!

i am looking to buy new blades for my prop or a new prop for me engine its a mercury elpto 3cyl 50hp and i think its somewhere between 1994-1997 and its on a humber assault 4.5m.

can anyone give me a bit of help as to what pitch and size i should be looking at?

i use the boat for general messin about and for a doughnut or other inflatables on occasion.

any help would be much appreciated!


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Old 05 May 2005, 06:00   #2
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Country: UK - England
Town: Gosport
Boat name: April Lass
Make: Moody 31
Length: 9m +
Join Date: Aug 2001
Posts: 4,837
Nick, I had the 60 hp version on a 5.2m rib. With a 13" prop the boat would plane with 4 divers, tow a skier etc and do 26 knots at 5000 rpm. Tried a 14" with a lightly loaded boat but wasn't any faster and time to plane was slower.

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