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Author Topic:   power for Montauk
philipat posted 09-11-2000 05:59 PM ET (US)   Profile for philipat   Send Email to philipat  
I recently bought a 1961 Montauk and have not yet bought a motor for it. What is this boat rated for?
JimU posted 09-11-2000 06:03 PM ET (US)     Profile for JimU  Send Email to JimU     
I think the boat is rated for 100 hp.
lhg posted 09-11-2000 07:13 PM ET (US)     Profile for lhg    
Check out the 16/17' reference section of this site for the correct model of your Whaler. The Montauk was not introduced until 1974.
philipat posted 09-11-2000 09:10 PM ET (US)     Profile for philipat  Send Email to philipat     
You were right, this isn't a Montauk. It is a 17ft.
whalernut posted 09-12-2000 03:35 AM ET (US)     Profile for whalernut  Send Email to whalernut     
Philipat, you have a `16 Hull, actually `16ft. 7in. they were called this until 76`. You either have a Sakonett, Eastport, or Nauset, if no center console then you have a Currituck, if it has bench seats. You have the old hull design with is flatter and much lighter than the post 75`s. A 100 h.p. motor would work, but I feel a littler to much for the lighter hull. From what I`ve read a 50-70 h.p. engine would be about right, probably the 60-70 for all around use. I have a 73` Currituck and I have a 75` 85 h.p. Johnson and it flies! If my motor dies I will replace with a 4-stroker in the 50-70 h.p. range. Good luck-Jack Graner.
Lil Whaler Lover posted 09-12-2000 06:12 AM ET (US)     Profile for Lil Whaler Lover  Send Email to Lil Whaler Lover     
Hey guys,

The question remains unanswered. Is Philipat's Whaler a Montauk or a 1961 hull? What is the serial number????

whalernut posted 09-12-2000 09:19 PM ET (US)     Profile for whalernut  Send Email to whalernut     
Lil, philipat said it is a 1961 so it definatly not a Montauk, only 3 options if center console-Eastport,Nauset,or Sakonett. Regards-Jack Graner.
andygere posted 09-13-2000 03:23 PM ET (US)     Profile for andygere  Send Email to andygere     
The 85 hp on the back of my 79 Montauk seems like plenty. I still have not had a calm enough day on Monetery Bay to go full throttle! So far, 32 mph, 2 people, 24 gallons of fuel and plenty of gear (15 hp kicker, dual batteries) in a stiff chop and plenty of throttle left.....
whalernut posted 09-13-2000 05:10 PM ET (US)     Profile for whalernut  Send Email to whalernut     
andygere, if you think yours has plenty of power, I have a Currituck that weighs 450lbs. less than you`re Montauk, at full throttle it seems to bee just in the water! I guess it`s up in the 45-50mph range. Acctually, it`s too much for such light of vessel, when the 85 buys the farm, I`m going 50-60 4-stroke, about 50lbs. lighter and in my opinion a whole lot better in fuel savings, low noise, no smoke, and will troll slow as hell! Regards-Jack Graner. P.S. Hopefully less carbon buid up.
philipat posted 09-14-2000 11:22 AM ET (US)     Profile for philipat  Send Email to philipat     
Another question...What length motor will I need for the boat? ie. Reguler, long, XL?
whalernut posted 09-14-2000 08:36 PM ET (US)     Profile for whalernut  Send Email to whalernut     
long-20inch JACK
andygere posted 09-15-2000 09:15 AM ET (US)     Profile for andygere  Send Email to andygere     
Jack,
Your Currituck must be a rocket! I have been using a decarbonizing additive in my fuel, so hopefully it will work and I'll get many more years out of the ol' gas hog.
whalernut posted 09-15-2000 06:05 PM ET (US)     Profile for whalernut  Send Email to whalernut     
Andygere, it is extremely fast and I also used decarb stuff and it helps. Mine is a gas hog to, acctually way to much. It also doesn`t troll very slow, something I was used to with a 35 h.p. Evinrude. I can`t afford a 4-stroke right now, so I`ll deal with it until it crokes! I just had a power pack replaced and the starter bendix gear, and a positive starter cable, the latter 2 as a precaution, frayed and worn. Regards-Jack Graner.
newportguy posted 09-15-2000 10:49 PM ET (US)     Profile for newportguy  Send Email to newportguy     
The 70 hp is a perfect engine for the 17 foot Whalers. It is easy on fuel and has enough snap for skiing. I would love to have a 4 stroke and maybe when the 70 croaks I will look at the the new 115 Yamaha 4 stroke...it seems to be a wonderful engine....I am a speed freak :)and the extra power would be great for pulling 2 out on solomon ski's.

andygere posted 09-19-2000 12:33 PM ET (US)     Profile for andygere  Send Email to andygere     
Jack,
What prop are you using? Also, does your engine rev up to 5500 rpm? I went fishing on SF Bay this weekend, and found some fairly smooth water (not glass but no major chop) and saw 34 mph on the GPS at 5000 rpms. I always assumed I would have another 500 rpm, but this was the first time I had smooth enough water to open it all the way up. Could be that the throtle is not opening the carbs all the way, or it could be the pitch of the prop. We had a decent load (two people, 15 gals fuel, 15 hp kicker, dual batts, fishing gear etc.) but nothing wild. I was expecting more like 40 mph. I think the prop is 13.5 x 17....any thoughts?
triblet posted 09-19-2000 02:01 PM ET (US)     Profile for triblet  Send Email to triblet     
I'd expect to see a little more speed with
the 85 too. I'm just back from a houseboat
weekend, and I got 35.7 KNOTS (41 MPH give
or take) on the GPS with an Evinrude 90,
14x17" prop, 5200 RPM, half a tank
of gas, and just me on board. I loose about
one knot if I have a passenger on
board.

Chuck

whalernut posted 09-20-2000 08:21 PM ET (US)     Profile for whalernut  Send Email to whalernut     
Guys, I have had an awful Flu, so I have been laid up, glad to be back. Anyway I run a 19 or 21 inch prop, as I have 2, but forgot which was which, their not marked. I think if you would move up to the 19in. prop you would get more speed and RPM. My engine really sceems on a `16 Currituck! I don`t have a Tack. or Speedo. but it rides barely in the water at full speed. I hope I am not exceeding the 5500 RPM limit, probably am, but the speed is fun. I think the 17in. prop is the one recomended for over all use, and it keeps the RPM`s honest. The 19 and 21in. props really tach. the 85h.p. out. Regards-Jack Graner.
triblet posted 09-20-2000 09:06 PM ET (US)     Profile for triblet  Send Email to triblet     
I thought that increasing the pitch reduces RPM. It's like a higher gear in your car.

Chuck Tribolet

Peter posted 09-20-2000 09:18 PM ET (US)     Profile for Peter  Send Email to Peter     
Andy

Check to see that your GPS is set to read statute miles per hour not nautical miles per hour.

jmbreitinger posted 09-21-2000 07:20 AM ET (US)     Profile for jmbreitinger  Send Email to jmbreitinger     
How can I tell what model my 62 Whaler is? It looks a lot like the current 17' standard. It does have the mohogany console.
whalernut posted 09-21-2000 07:20 PM ET (US)     Profile for whalernut  Send Email to whalernut     
Chuck, I have always thought the opposite. I have thought that a higher pitch increases RPM, thus increasing the speed. Maybee I don`t know right? Can anyone clarify? As to the 62` Whaler question, I think you have a Currituck, I have a 73` Currituck with 2 bench seats and a 3/4 length Mahogany console. Mine has a plastic steering wheel, original. Does this sound like what you may have? Regards-Jack Graner.
Dick E posted 09-21-2000 09:20 PM ET (US)     Profile for Dick E  Send Email to Dick E     
Whalernut as you increase the pitch of the prop you will decrease your rpms. Roughly 200-300 rpm for each inch

The pitch is the theoritical distance, without slipage, a boat would move during one complete revolution of the prop.

A prop with 21" pitch would have to "move" more water than an 18" with the same diameter.
Hope this helps.

Lil Whaler Lover posted 09-21-2000 09:30 PM ET (US)     Profile for Lil Whaler Lover  Send Email to Lil Whaler Lover     
To jmbreitinger:
You do have a Currituck, possibly one from the first year they were marketed. Certainly 1962 was the first year they appeared in a catalogue. Check your serial number against the list in the reference section to verify the year your Currituck is.

Compliments to Dick E on an accurate explanation of changing propeller pitch. One can also note that in a given series of props as the pitch increases the diameter decreases. Lower pitch + more diameter = beter pull in a heavily loaded situation.

Note to Jack: you really ought to get a tach on your 85 as its lifespan will drop exponentially if you consistantly operate it over 5500 rpm. You will probably discover that your 21 is way too much pitch even for your light hull and the nineteen probably turns 5,200 to 5,400 rpm with just you in the boat. These things just do not breathe well enough to sustain high revs, one reason they tend to last a long time. Dave

whalernut posted 09-22-2000 07:49 PM ET (US)     Profile for whalernut  Send Email to whalernut     
Thanks guys, I think I was thinking of diameter, not pitch. Now am confused on the difference between the two? So the difference is? Anyone? Regards-Jack Graner.
Peter posted 09-22-2000 08:08 PM ET (US)     Profile for Peter  Send Email to Peter     
Assume that when the propeller is turning that the outer tips of the blades form a circle. The diameter is the length of a line drawn across the circle which cuts the circle into two equal halves. Typically, the diameters of the propellers for the OMC V-4's were less than 14 inches, usually in the range of about 13 and 1/2 inches give or take a 1/4 inch. The pitch relates to the angle the blades make with the rotation axis. The pitch can vary widely depending on the application. For heavy boats, a lower pitch is typically used and for light boats a higher pitch is used. Your propellers should state on the hub the dimensions of the propeller. You might find some marking such as 13-3/4 x 17. Usually the first number in such markings is the diameter and the second is the pitch. Hope this helps.

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