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Old 21-04-2016, 00:43   #16
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Re: What Actually Happens If You Oversize The Dinghy Outboard?

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And go to jail for littering and pollution!



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I suppose you're right.

It would be a crime.

Why, ghee whiz, my overpowered 3knot dinghy might endanger those overloaded 14' RIBs flying into harbor drunk at 20 knots. THINK OF THE CHILDREN!

Nope, the law is the law, I'm sure there's a good reason for it..
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Old 21-04-2016, 00:58   #17
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Re: What Actually Happens If You Oversize The Dinghy Outboard?

I had a walkerbay. You won't damage the transom with a 4hp.

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Old 21-04-2016, 01:00   #18
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Re: What Actually Happens If You Oversize The Dinghy Outboard?

I had a 5hp tohatsu on mine,.

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Old 21-04-2016, 01:03   #19
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Re: What Actually Happens If You Oversize The Dinghy Outboard?

^^^And no problem with the transom being pushed down?
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Old 21-04-2016, 01:41   #20
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Re: What Actually Happens If You Oversize The Dinghy Outboard?

The transom handled it fine, it just dosent go any better than the 2hp.....more throttle and the stern just digs deeper. To be honest I didnt like the walkerbay very much. Low freeboard, dosent take a load and wet. Definitely need the floats and even then I found it marginal....just my opinion.

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Old 21-04-2016, 05:48   #21
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Re: What Actually Happens If You Oversize The Dinghy Outboard?

I have a Walker Bay 8, the transom is pretty strong. When I bought it the PO had had a 5 HP on it. When loading the engine onto the transom he capsized the boat and lost the engine. Working over the stern of a WB 8 can certainly be challenging because they are such small boats. If you have a system worked out though, it should be fine.

I have oars and sailing rig for mine. I am very happy with the sailing rig and would not change it for an outboard.

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Old 21-04-2016, 06:31   #22
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Re: What Actually Happens If You Oversize The Dinghy Outboard?

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It is pretty simple: if full throttle gives you issues of control or flex in the transom (which I really doubt), back off on the throttle. Ain't no rule sayin' you must run full throttle ever.

I would not worry about the 4 hp at all; YMMV

Jim

This, exactly don't worry about nothing.

If your really worried, peel the 4HP stickers off and replace with 2HP ones

Oh, and I'm real sure a 4HP at low throttle will burn less fuel than a 2HP run at high throttle as normally engines are set to run rich at high power settings because rich is cooler, but either way it's not enough gas probably to even notice
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Old 21-04-2016, 06:37   #23
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Re: What Actually Happens If You Oversize The Dinghy Outboard?

Not much issue with a 4 hp on a 2 hp boat.

I saw this thread and expected something more like sticking a 150 on a boat rated for 35.
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Old 21-04-2016, 06:39   #24
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Re: What Actually Happens If You Oversize The Dinghy Outboard?

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In the U.S. Coasties, Park Rangers and others can give you a ticket for exceeding the capacity plate.

From:
Boat Weight Regulations - BoatUS Magazine

Federal requirements mandate that outboard-powered boats 20 feet and under must be built with enough flotation to keep the passenger-carrying area at or just below the water's surface, in the event of swamping or capsizing.
~~
If an overloaded boat swamps or capsizes, its built-in flotation may not be sufficient to keep the hull from sinking.

Horsepower capacity deals with two concerns that must be addressed when attempting to match an outboard engine to a boat: horsepower and weight. Too much power can make a boat difficult to control and too much weight, whether "live load" or gear, can lead to stability problems.
The USCG federal regulations require that manufacturers affix the capacity plate. The CG cannot give you a ticket for not following it. That's not to say there might be a state regulation that would require you follow it. If there is an accident and the boat is overloaded or overpowered then you are setting yourself up to be sued.

MAXIMUM HORSEPOWER
The maximum horsepower information listed on the capacity label is a guide for selecting an engine for a boat. Its not a violation of Federal Regulation to install or use a larger engine. Boaters should check state regulations for restrictions. They should also take a look at their insurance policy regarding horsepower.

http://www.uscg.mil/d1/prevention/na...ing_safety.pdf
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Old 21-04-2016, 06:58   #25
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Re: What Actually Happens If You Oversize The Dinghy Outboard?

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Just 2 more HP shouldn't create any of these issues...............
You might think, but on the other hand, he is considering doubling the horsepower from what the boat is designed for.

I'm thinking it's not a great idea.
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Old 21-04-2016, 07:04   #26
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Re: What Actually Happens If You Oversize The Dinghy Outboard?

when i used a wb 8 i used a 3.5 nissan. was a perfect match. 4 was a tad heavy. ye aint gonna plane the damnthing, so why weigh down thew transom unnecesarily.
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Old 21-04-2016, 07:16   #27
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Re: What Actually Happens If You Oversize The Dinghy Outboard?

I think a light weight 4 that could also be used to move the big boat if it had to is not a bad idea.
I think the Walker Bay is the bad idea, not the motor
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Old 21-04-2016, 08:36   #28
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Re: What Actually Happens If You Oversize The Dinghy Outboard?

AND....internal combustion engines are rated X hp @ X rpms.
reduce the rpms, and you reduce the HP produced...Just sayin.
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Old 21-04-2016, 08:38   #29
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Re: What Actually Happens If You Oversize The Dinghy Outboard?

So you want to double the hp on your little boat, no problem just calculate the force used to propel by the square of the force going backward and divide that by a random number and you get the Kiss principle. I say go for it dude just keep it simple stupid
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Old 21-04-2016, 08:57   #30
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Re: What Actually Happens If You Oversize The Dinghy Outboard?

As soon as the government card is played you have to do it :-)
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