Mikey B Posted May 27, 2018 Report Share Posted May 27, 2018 Hi All, I've been running a standard alloy prop on Henry B from new. WOT at 5000 rpm gave a top speed of about 15 knotts with the 12/14" x 9" alloy prop the boat came fitted with. Two crew and all the associated fishing paraphernalia. Changed to the prop to a Stainless Steel 10 x 5/8" x 11" and the difference is amazing. The stainless prop has a more progressive pitch. The alloy prop is much flatter in appearance. I now have a top speed of 19 knotts with a WOT of 5000 rpm with the same load. Also uses a lot less fuel which was a pleasant surprise. The motor does not sound as though its at bursting point as it did with the alloy prop. It always seemed as though I was driving around in 3rd Gear and the prop change has proved it. Mikey B Brian, Leicester Fisheagle, Tarlach. and 1 other 4 Quote Link to comment Share on other sites More sharing options...
great white Posted May 27, 2018 Report Share Posted May 27, 2018 Well done very sound investment , that will soon pay for itself on fuel savings alone Quote Link to comment Share on other sites More sharing options...
Maverick Martin Posted May 28, 2018 Report Share Posted May 28, 2018 It's amazing the difference different props make. Are you now achieving that max or near to rpm specified by the manufacturer? You should be able to achieve this or very close to it with your standard load onboard. if not there is room for even more improvement. As well as being more fuel efficient and giving better performance getting the required revs is also kinder to the engine Quote Link to comment Share on other sites More sharing options...
Jim Posted May 28, 2018 Report Share Posted May 28, 2018 Good news Mike. I keep wondering if I should buy one. Although Tiddler does 30 knots now. Jim Quote Link to comment Share on other sites More sharing options...
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