Home Forums Fishing Saltwater Honda 2hp 4stroke?

BW,
Really not sure, I guess I missed that this is a 6-7 foot raft. I'd check the mfgs hp rating...even the two hp could be over powered. I was looking at the more substantial inflatable that that Savage99 posted here. A buddy had a small inflatable without a keel; it was not usable with any motor without the keel. I wrote the mfg and complained after he and I did the shakedown 'cruise'. The mfg bought it back. Inflatables vary so much. I'm use to thinking Zodiac when I hear inflatable. Even their smaller models seem highly stable. Inflatable designs are not just making them blow-up, they are complicated to get right.

Bearhunter,
2 stroke and 4 stroke engines have vastly different speed/torque characteristics. 4 strokes have more low-end torque and 2 strokes have more high-end speed. When you couple this to a prop in a fluid medium, the top end performance (top speed) favors the 2 stroke. Power may be derated by the 25-30%. But that doesn't mean the speed will be 25 % less as the power is proportional to the square of speed. Most certified boats would quote two HP ranges, one max for outboards and another higher number for inboards or I/O, as these are all 4 stroke (except diesels).
I've never talked to a marine dealer who would not tell you this.
Hoppes9

Hoppes9,

I was staying within the context of BW's post. My research indicated the following:

Mercury 2.5
Specifications
HP @ Prop: 2.5
Max RPM (WOT): 4200-5200
Displacement (CID/cc): 4.6/74.6
Dry Weight (lbs.) (Lightest Version model, excludes engine oil, rigging, hardware and propeller): 28

HONDA SPECIFICATIONS
ENGINE
Type 4-stroke OHV Single Cylinder
Displacement 57cc (3.4 cubic inches)
TypeFull Throttle RPM Range 5000-6000 RPM
HP Rating @ Propshaft 2HP @ 5500 RPM
DIMENSIONS
Recommended Transom Height (S) 381 mm/15 inches
Dry Weight (S) 12 kg - 27 lbs.


[quote]The 2 strokes are so much lighter and more powerful. In the small motors the rule is to derate the 4-stroke by 30 percent to get the equal 2-stroke. Means that a 5hp 4 stroke is like a 3.5 hp 2-stroke when it comes to performance.[quote]

I guess that my previously stated question had to do with the merits found in simple specs. It appears that the Honda developes virtually the same horsepower per cubic inch of displacement, has a higher range of rpm's, and weighs less. Granted, the Merc. is rated @ 1/2 hp more. The Honda has the potential to turn 500 more rpms. My whole point is that there is so little difference between these two that it is almost a wash. Sort of like the difference between a 30.338 and a .300 norma?

best,
bhtr

It's a good raft, not a pool toy like a Seyvlor (sp?) <img src="/ubbthreads/images/graemlins/smile.gif" alt="" />

It came along with our big boat so I can't bitch about the price or lack of keel.

I just started to carry it on the 'roof' of my skiff, inflated and ready to go, whether for fun or emergencies. In the past 2-3 years there have been too many aluminum drop bows sink around these parts. All of which were bigger than mine. So the raft is primarily there for emergencies, and secondly to get me from the mooring bouy to shore. The skiff itself is great for hitting the shore and unloading people and gear.

I have no problem with rowing, but it can be a pain with more than one person onboard. It's so much nicers to just sit in the back and motor in rather than try and row with gear or people getting in the way.

I'm sort of leaning towards the little Honda...

Savage99,

BTW, got some more pictures of your sail boat?

BW,

You know what your doing.

I row to the boat when it's easy and leave the kicker on it. If I have a long way to go then I put it on the tender.

The boat is a C&C 35-1. The picture shows it beating to windward under just it's genny. I am under the dodger which is sort of a pilot house if you will.

This boat was selected to keep up with our friends boats who had the same model. I went to Annapolis and brought this retired racer up to Connecticut.



Details on the C&C 35-1

Savage99,

Thanks! I'm still developing a taste for sailboats. Truthfully I know little about them, and the terminlogy is overwhelming. I'm a frequent visitor at woodenboat.com and sailboats and small row boats are popular over there.

All that you need to know about them is not to get hit by the boom or fall off. The Genny refers to the "Genoa" which is an old term for a large foresail or jib.

Your boat must be wood then? I can't even keep up with the Sickens as you could see in one of the pics.

Yes, our commercial boat is wood...





...but the skiff is aluminum...



I think I could learn the names of all the items in your picture above, but there are a lot more than that. And, they I think they use different terms for the same thing just to confuse me. <img src="/ubbthreads/images/graemlins/smile.gif" alt="" />