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Old 19-01-2015, 09:38   #1
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NEED HELP with right outboard for new inflatable

I just purchased a new Zodiac 10' inflatable. Since it will be hanging on davits and it may be just me on the sailboat, what is the best HP to buy. Limit is 9.9 hp for the zodiac. Will be using Ronstan triple blocks with 6 to 1 ratio (4 total) Weight of dingy is 60 lbs. 9.9 motor is 80 lbs. 6 hp is 60 lbs. 3.5 hp is 40 lbs. WILLING to sacrifice the speed of the dingy so that I can raise it. My first thought is the 3.5 hp motor but this may be to slow. Usually the dingy will have 2 people in it. ANY advise is GREATLY appreciated
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Old 19-01-2015, 10:03   #2
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Re: NEED HELP with right outboard for new inflatable

Assuming you have 6:1 on each davit the 9.9 is the go. I can lift ours pretty easily one end at a time with 3:1. The engine is ten have end .
our dinghy plus motor plus fuel is around 100kg, 200lb
You can always run it to a winch anyway..
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Old 19-01-2015, 10:33   #3
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Re: NEED HELP with right outboard for new inflatable

I got a Yamaha 8hp 2 stroke, as it was the most power I could get for the weight. It weighs about 60lb, and my 10ft Zodiac RIB flies along very nicely.
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Old 20-01-2015, 13:23   #4
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Re: NEED HELP with right outboard for new inflatable

Another consideration, aside from the ability to motor into a head wind, is can you tow your mother ship your dink.

If you have a mechanical failure it's really nice insurance knowing you can put the dinghy on the hip and maneuver into a port and repair dock.

For that reason I would recommend a 9.9. IF you can manage the extra weight.

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Old 31-01-2015, 11:06   #5
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Question Re: NEED HELP with right outboard for new inflatable

I have a Walker Bay 8' with flotation collar; I would like to power it with an electric trolling motor for short trips to shore when anchored/moored.
Any suggestions for the power and brand I should look for?
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Old 31-01-2015, 13:13   #6
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Re: NEED HELP with right outboard for new inflatable

From the limited info provided it sounds like a 6-9.9 hp motor would do.
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Old 17-02-2015, 08:08   #7
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Re: NEED HELP with right outboard for new inflatable

I would suggest 8-9.9hp. I have an 8 hp Yamaha two stoke and can do about 14 knts with two on board. Dole fins are a big help. I understand Yamaha doesn't make a 8hp two stoke anymore.

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Old 17-02-2015, 09:26   #8
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Re: NEED HELP with right outboard for new inflatable

As far as the davits, we have a 350lb dink setup and I can raise it by myself pulling on both ends at once using the 4 triple block setup like you describe. And I am a skinny weak guy.

The key is to change two of those triple blocks to ratcheting ones (one of the three pulleys in the block have a ratchet in it). This takes most of the weight off them when pulling up and letting down.

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