River and canal exploration SIB?

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rcx103 Great Britain
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River and canal exploration SIB?

Post by rcx103 » 16 Sep 2023, 14:31

I wanted to see some of our canals and rivers from the water side, so I got super excited when my friend said he's selling his motorised inflatable. I had some amazing days on it with the kids, we've explored the Thames from London to Windsor and seen beautiful areas that we'd never have seen otherwise.

But problems quickly showed up. The 4.3m long x 2.0m wide boat and 25hp two stroke engine is too heavy and big to pack down. It doesn't fit into the boot of a car, not even close. The floor is ply and needs to be removed each time to dry out and that means taking the engine off as well, it can't just stay on a trailer. The two stroke engine is also pretty loud, my wife finds it takes away from the boating experience. We also have issues with launching the boat. My Isuzu with the trailer becomes a "land train", so on weekends when the slipway is busy we can't even get it onto the water.

And then there's the wake. Fine at idle, and not so bad when planing, but anything in between it's hella big, way bigger than other boats, and disturbs others. Well I can't just idle my way down the river because it's a two stroke and needs to burn the oil off the plugs. And I can't plane on an urban river.

So I'm forced to sell the boat :(

I wanted to ask about alternatives. I'm thinking of changing to a V air floor and lightweight four stroke engine that I can put into the boot of the car, maybe with one of the seats down.

In terms of planing, I hear that longer boats are better, but is there a cut off point where longer is not better? I was thinking of the Honwave 3.2m as a compromise.

The Tohatsu 6hp is nice and affordable, and at 25kg, can be hand lifted. But I hear it's planing ability is borderline. I've also looked at the Selva 10hp which is the only bigger engine I can lift at 30kg. It's single cylinder and has issues but I might take the risk.

Limecc Great Britain
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Re: River and canal exploration SIB?

Post by Limecc » 16 Sep 2023, 22:52

Tbh I don't think you'll be much better off wake-wise with any of the alternatives you are looking at. They're just blunt tubes displacing water and you'll never get on the plane within the speed limit. I reckon a solid hull's a better option, maybe with hydrofoil to give stern lift and lessen the wash. All modern four strokes are whisper quiet, especially Suzukis.

CRF999 Great Britain
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Re: River and canal exploration SIB?

Post by CRF999 » 17 Sep 2023, 16:29

Limecc has covered it pretty well .
You are certainly not going to be planning on a canal where the speed limit is 4 mph !
That is often the case on rivers as well.

I used to troll with a 40hp 2 stoke for many hours and did not have oiled plug issues. May I respectfully suggest you have to much oil in the mix if you do.

Regards Clive

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