That s the next destination, maybe in a few years, up the amazon as far as peru; I did it downstream in local pirogues, and while pink dolphins were quick to run away, trees and damned waterlilies were quickest to foul/stop/twist propellers, nothing a couple of hammer strokes could not repair. local knowledge!
That leaves a lot of time to ponder the usefulness of a rope stripper!
Bluidy @#ell, I think my instinctive reaction would be to throttle back as soon as I sensed a change in the engine note, but it would appear that in that scenario it would be exactly the wrong thing to do. When I went into St Vaast at Easter it was absolutely thick with pot markers.
I don't think that any tropical rivers flow into the Irish Sea so where do the tree branches that I see come from? And sawn off tree trunks in the river Wyre, usually after a spring tide.
The real Ambassador website is at www.ropestripper.com - where there's lots of info including prices.
The Ambassador Stripper is an excellent bit of kit. The price reflects very high degree of manufacture. Remember that versions for saildrives are more expensive than for conventional shafts. Bearing this in mind, I reckon the option price quoted is very reasonable.
Go for the Ambassador. They are excellent tho make sure you get a set of the nylon bearings as spares in case you have to replace these. I have dragged lines all over the Med and back to the UK. Tied up in my home port on arrival here and there was 30 meters of line hanging off the prop. Since fitting the Ambassador not one line tho did get a funny noise once half way across the North Sea. Guess someones fishing net now has some serious holes in it.
On a saildrive its really easy to fit, all you have to do it cut a small piece of skirt at the boss of the prop, its then a simple matter of fitting a new Anode with a slot cut in it supplied by Ambasador then sliding the cutter assembly into place and refitting the prop. Their website has full fitting instructions.
The total surface area of a stripper is only a few sqins, and in any case the stripper blades are aligned with prop blades, so they are totally neglible.
What's more they are aft of the P bracket or saildrive leg in an area of non-linear waterflow, so if they account for a speed loss of .01 kt I'd be surprised.
I believe that relates to larger, shaft driven motor cruisers, where drag from cutters can knock a bit off the top end speed. Cannot see it would in any way affect a sailing boat though.
I've seen a demonstrator at the Southampton Boat Show chopping up 6mm. rope with a stripper powering it by turning the propellor by hand. A 28 hp engine is ample