|Topic Review (Newest First)|
|12-21-2011 02:40 PM|
|rrh||I have a Watkins 23 (2500 lbs). I have a 6 hp Johnson 2 stroke. It is all I need, except if you need to stop fast :-) I hardly ever run over 1/2 to 2/3 throttle. It has a "weedless" style prop though and that makes it lacking in reverse. I'm pretty sure that I saw somewhere that the standard motor offering was 2 1/2 and the upgrade was six.|
|12-21-2011 02:02 PM|
|MarkCK||I use a 6 hp on my 1500lb 20' boat. If I had to buy another one I would probably get a 4hp motor. I do sail on an inlind lake where conditions never get out of hand. If I was in an ocean enviroment I would probably opt for the 6.|
|12-21-2011 10:25 AM|
I have 4 hp mariner on my 21 ft, weighs 1400 lbs and rarely need much throttle. I don't sail in the sea, but can't imagine it wouldn't be enough if prop stayed in water.
|12-21-2011 05:08 AM|
Thanks for that - good advice. I'll stick to long shaft.
High thrust - can anyone give me an idea of the dimensions and range of pitch ratio I should look for in a prop?
|12-20-2011 10:11 PM|
|bjslife||I had a 9.9 Johnson long shaft on my 1969 Venture(mcgregor) 24' and never worried about tide or current. It was easy to lift also.|
|12-20-2011 07:08 PM|
Originally Posted by CoasterNZ View Post
I never noticed much problem with vibration. I tended to lock it dead ahead and steer with the tiller, so I was never holding onto it for long.
As we are likely to see more bodies of water closed to 2 strokes, I think getting a 4 stroke makes sense if you're not too sensitive to weight. 10 or 20 extra lbs isn't going to bother you as much as it would with an inflatable dinghy.
I bought the Tohatsu as, at 43 lbs, it was a good tradeoff, power vs. weight.
|12-20-2011 05:49 PM|
|kwaltersmi||I agree, 8hp is overkill to be sure. Cavitation becomes a real issue when things get snotty and you have to motor. Better to avoid the snot or learn to sail in it.|
|12-20-2011 04:39 PM|
|zz4gta||I use 3.5 on a 25' 3000 lbs boat. Works just fine. In a sea way, an outboard ain't gunna move you anyway. Hope there's wind, and sail in.|
|12-20-2011 11:33 AM|
when I had a Catalina 22 I used a 4 HP motor and I never wished for more power. The boat weighed about 2000 lbs, so I would say that WanderingStar's formula is correct.
Lastly, a long shaft is more important than more HP from a short shaft. A big motor that comes out of the water in waves / chop won't work as well as a 4HP that is in the water when you need it.
|12-20-2011 11:18 AM|
|WanderingStar||The old formula was 1hp/500lbs. Four horse should be fine. I rowed my 20' keelboat, then used a 45lb thrust trolling motor. Neither method worked into the wind, but then I just sailed.|
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