Preferred Outboard for MF855?

[Bouba]

Do you really believe it? If it was true every cargo ship, ferry, cruise liner, would be falling over themselves to buy them as even a small percentage improvement would be millions in savings.

But they aren’t. That should tell you everything you need to know.

It’s just beginning.....the props are very difficult to make, machined out of blocks of stainless (as far as I’m aware)...it could ramp up into something huge...mostly it’s about testing and early adopters at the moment

 

[Alicatt]

Do you really believe it? If it was true every cargo ship, ferry, cruise liner, would be falling over themselves to buy them as even a small percentage improvement would be millions in savings.

But they aren’t. That should tell you everything you need to know.

It is a fairly new design, not just with boats but with hobby aircraft, the jury is still out on whether they are effective on the likes of a drone/quadcopter.
Reading some of the reports on the Sharrow prop it looks like it is at it's most efficient at a low to medium speed, if the reports are genuine. It made me wonder that with the high speed of them used on drones and that people are not seeing any great performance improvement in speed, endurance, or even noise.

The one big thing the people that are testing out these designs have said is that they are very difficult to manufacture correctly whether it be by machining or 3D printing.

 

[Chiara’s slave]

It is a fairly new design, not just with boats but with hobby aircraft, the jury is still out on whether they are effective on the likes of a drone/quadcopter.
Reading some of the reports on the Sharrow prop it looks like it is at it's most efficient at a low to medium speed, if the reports are genuine. It made me wonder that with the high speed of them used on drones and that people are not seeing any great performance improvement in speed, endurance, or even noise.

The one big thing the people that are testing out these designs have said is that they are very difficult to manufacture correctly whether it be by machining or 3D printing.

If they got around to making them for smaller outboards, it sounds like something we could use. We have a 4 blade low pitch prop. Only 5” pitch, large area, for maximum thrust.

 

[ontheplane]

Mercury = BMW

Yam = Volkswagen

Honda = Kia

Suzuki = Massey Ferguson

Evinrude = Rover

I disagree totally with the above.

Yam are massively more reliable than anything VW have ever made!

Honda are Honda - why compare them to Kia that's just odd.....

If you are going to do that kind of comparison I'd say....

Mercury - Like Subaru - Sporty, performance based, but not the worlds most reliable, but plenty reliable enough

Yamaha - Like an older Mazda - totally dependable and reliable if not the seixest. If I had to put £1000 bet on which outboard would be the most reliable, that's where my money would be.

Honda - Honda - totally reliable as well

Suzuki - Kia - simple, basic, does the job some interesting innovation but not 100% reliable when they do inovate

Evinrude - Land Rover!

 

[Bouba]

I disagree totally with the above.

Yam are massively more reliable than anything VW have ever made!

Honda are Honda - why compare them to Kia that's just odd.....

If you are going to do that kind of comparison I'd say....

Mercury - Like Subaru - Sporty, performance based, but not the worlds most reliable, but plenty reliable enough

Yamaha - Like an older Mazda - totally dependable and reliable if not the seixest. If I had to put £1000 bet on which outboard would be the most reliable, that's where my money would be.

Honda - Honda - totally reliable as well

Suzuki - Kia - simple, basic, does the job some interesting innovation but not 100% reliable when they do inovate

Evinrude - Land Rover!

My old Subie was insanely reliable
My preference is Honda...but Mercury, Suzuki, Yammy are equally as good....now that Evinrude has shut shop it makes it difficult to choose it.
In the OP’s case, I would first decide if I wanted a single or twin...then I would pick the winner on which is the best and best equipped boat

 

[ontheplane]

As to power - I think any boat with over 100hp per tonne should go reasonably well,

I had a Fairline 21 with 130hp that weighed about 1800kg and it was a bit of a slug to get on the plane.

I think 120-130hp per tonne would be ideal?

Having said that, I would suspect that as the boat gets bigger / heavier perhaps the rule no longer applies I don't know.

 

[SC35]

Do you really believe it? If it was true every cargo ship, ferry, cruise liner, would be falling over themselves to buy them as even a small percentage improvement would be millions in savings.

But they aren’t. That should tell you everything you need to know.

Interesting test here.
Sharrow Propeller™

They appear to offer some sort of efficiency savings on small high revving applications cruising in the mid range.
But WOT dropped 400rpm, so similar figures might be obtained from over propping with a higher pitched propellor anyway.
It doesn‘t mean a cruise liner would see an advantage,