Dinghy hp

J

jtsmlarson

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Jul 7, 2002
RO Number
9256
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411
I have a Maxxon inflatable with an inflatable keel and high pressure floor. It's rated for 2 people or 880 lbs ( I don't know ANY 440 lbs folks!). I need a motor to throw on the back and have found a 2-stroke 5 hp Nissan. The inflatable can handle up to 5hp, but I'm worried that the 5 hp might be overkill, heavy and make it kind of squirrely to drive! The inflatable is about 7 feet long.

I've always gone for the BIG motors and always push people to get bigger motors on a boat, but in this instance it might be too much motor!! Whadya think??
 
We use an 8HP Yamaha on a 9ft. Walker Bay with no problem. The 5 should be just about right.
 
we can plane with 2 people and a Lab on our 10' high pressure air floor with a 2 cycle 9.9 mercury.

RWS
 
If the capacity plate on your inflatable states a maximum hp of 5hp, then 5 hp should be fine.

We have used the maximum allowable hp on our two previous inflatables and we found the issue was more with taking the 9.9 hp on and off the inflatable.

Mike.
 
I'm kind of partial to the Honda 2HP 4-stroke. 27 Lbs, about 1 qt per hr, air-cooled, centrifugal clutch, clean burning, 5 kts on my 9.5 ft dingy. How fast do you want to go?
 
If you find that it wants to "chine walk" with the added HP, just add fins to the outboard. I put a 15hp 4 stroke on a 10" Avon Rib and that thing was all over the place on plane. Added the fins and she stays stable and true.
 
The 2hp Honda is a great engine, just bring your ear plugs! I've listed to a lot of outboards and I'd LOVE to have the new 2.5 Yamaha or Suzuki. The Honda is reliable and doesn't have an impellar which is great, but it's too loud for my liking. I even considered twin 2's!! :-)
 
i'm usein a 3.5hp 2stoke on a 9.5' inflatable, and it works just fine.
your 5 will be smokin
 
Please take into consideration the weight of the engine. It is a lot easier
on the back when installing/removing/storing using a smaller one.
HP? It all comes down to how fast you want to commute and how much weight you can safely handle with one hand on the dingy and the other on the engine.
(That is, unless you use a davit) Think about it.
 
quote:
Originally posted by Cpt. Harold

Please take into consideration the weight of the engine. It is a lot easier
on the back when installing/removing/storing using a smaller one.
HP? It all comes down to how fast you want to commute and how much weight you can safely handle with one hand on the dingy and the other on the engine.
(That is, unless you use a davit) Think about it.

the only reason i choose a 2.5hp 2stroke was weight. this engine weights 23lbs.

Click to expand...
 
5hp 2-stroke is ideal...this is what we use.Beats the 6hp 4-stroke hands-down.
 
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