Nantucket owners..what prop are you using for which engine?

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Yiddil posted 06-07-2005 03:43 PM ET (US)
Nantucket owners..what prop are you using for which engine?
Just curious to try a SS Vengence or some other kind with my 115 -2:) Tryed using a 14p recommended by BW and couldnt get on plane at all:( Had a 18 but didnt use it based on BW reomend.)????? very confused about this....thanks in advance for your help and advise...
Riverwhaler posted 06-07-2005 04:09 PM ET (US)
Yiddle you should have got the 150hp then prop wouldn't be such a ticklish problem. I try to tell everybody to get the max hp that boat allows. Then performance isn't a big deal. That being said trial and error is the way to find the right combo for your situation. Good luck. I come over to the coast as much as possible so I would be happy to give you a ride in a Nantucket with 150 Honda.
Marlin posted 06-07-2005 04:15 PM ET (US)
Henry, what prop(s) do you have now? We could try the 16" Vengeance off my Dauntless next time we get together. I'd like to try the 18" if you still have it.
-Bob
Sal A posted 06-07-2005 08:31 PM ET (US)
Riverwhaler,
I forgot that you originally got the 115 on your boat. I would love to hear about how you pimped your ride, and what your impressions of that Honda are.
Yiddil,
My prop: 14 x 19 Merc Vengeance
Riverwhaler posted 06-07-2005 10:00 PM ET (US)
Yiddil, not sure what you mean by pimped my ride but it did cost me quite a sum to change but in MY OPINION that is the best motor for that boat. First it is quiet, maybe even the quietest motor going. Second it is smooth running, you can feel the power change when the second lobes of the cam come into play. I put Mobil 1 oil in the crankcase and just run it all year. Change in the fall. Just add gas to the tank, thats all. Always starts instantly. Not going to buy another boat so one might as well be very happy from the get go. Now that retirement is gradually taking place I am going to play more so I could meet you on the coast some day.
Riverwhaler posted 06-07-2005 10:04 PM ET (US)
Sorry I now see that Sal was asking.
Yiddil posted 06-07-2005 11:21 PM ET (US)
Marlin.
Was going to try a 16 next...14 was a bust...The 18 is around somewere and you can try that if you like...have to get it back from you know who....
Riverwhaler, you said..."Yiddle you should have got the 150hp then prop wouldn't be such a ticklish problem. I try to tell everybody to get the max hp that boat allows. Then performance isn't a big deal".
Im not at all dis-pleased with the 115-2 with the standard prop WHaler put on her(aluminum)...if you have read my previous posts on "Das Boat" then you know Im actually very pleased with the motor I have...I can get up on plane almost as fast as a 150, and use less gas, and Im really not concerned about performance, doing 38 all day long...30 mph at 4000 rpms...as she runs really well. I was just trying out some other props to see what would work and what the differneces were......I get up on plane at 2000rpms...I ran her for 8 hours at the Potomac Swim event last weekend and only had to top off the tank with 20 bucks worth, 10 gallons...Im sure its hard for anyone to claim that with a 150...
But the 14 SS Vengence was a bust even though WHaler recommends it, so we will try the 16 Marlin real soon, then the 18...and see what the differnces are...
Perry posted 06-08-2005 02:08 AM ET (US)
"I ran her for 8 hours at the Potomac and only had to top off the tank with 20 bucks worth, 10 gallons...Im sure its hard for anyone to claim that with a 150..."
8 hours of use and burned only 10 gallons of gas on a 19 foot boat? Give us a break! That's 1.25 gallons per hour. It would be difficult to get that kind of fuel economy on a 13 footer with a 30 HP motor.
highanddry posted 06-08-2005 04:32 AM ET (US)
I know there are reasons to go with smaller engines, I just don't know what they are. Now that my Opti 150 is loosening up the engines is smooth, efficient and has tons of power to spare. When I put the hammer down from a start she leaps up on plan even loaded and goes like a scalded cat. So far so good, fingers crossed but my Opti seems like a darn good engine, hope it is.
Maybe playing with those vent plugs might allow the 115 engine to use a cupped stainless prop and still turn up enough to get on plane.
Riverwhaler posted 06-08-2005 02:22 PM ET (US)
Well what turns one person's prop may not turn anothers......
We should all get together and ride in each others Nantuckets then sit back over a coupla beers and say what nice boats we all have. Life goes on.
hwnwhaler posted 06-08-2005 04:24 PM ET (US)
Perry,
I think that was a swim event, like escorting an outrigger race over here. SO, you know how it is when your ideling around 2-5 mph for 75% of the time, the gas just don't disappear that fast. Now, MPG is a much better gauge...imho.
John
Perry posted 06-09-2005 03:53 PM ET (US)
Hey Riverwhaler, the dealer is about to mount the new Honda on my Nantucket and I was wondering what make and size propeller you have on your Honda BF150. Also do you know the RPM at wide open throttle on your boat? These answers will really help me decide what prop to buy.
Thanks,
Perry
Yiddil posted 06-09-2005 08:27 PM ET (US)
Well, its not to hard for me to belive, as i did the filling...and yes...I was running around @ 6mph 90% of the time!! Still try that with a 150 and i bet you use more:) Actually there was another nantucket layed out exacvtly the same at the Potomac Swim...Ill ask Daren how he did...but im sure it was probably the same as he has the same 115-2
I see the thread I started has "strayed" so let me ask again...what prop on what engine are you using and what recommendation for the 115-2 now that we know the 14p wont work well.........
Riverwhaler posted 06-09-2005 08:28 PM ET (US)
Perry, after all that discussion about props all I know is what is on the prop. It is a Mercury Marine Vengeance 48-16316-19P. At the present time I think it is cavitating a bit because the motor seems to be a bit high. Splash plate is about 1/2 inch above the bottom of boat and I can't trim out very far. Motor cannot be mounted any lower because of lip on engine mount. Dealer is sending another prop to try. This is not a problem when only 2 people are on board.
If you send me a email I will return it with some photos.
Still like the Honda tho and wouldn't want anything else.
allan@vtstudio.com
kamie posted 06-14-2005 09:05 PM ET (US)
I ran with a 150 on a 18 Outrage and topped off the tank with 19 gallons. Same as Yiddil, @ 6 mph most of the day.
Plotman posted 06-14-2005 10:01 PM ET (US)
In a sense, that Mec 115 is a different technology than Kamie's 150 in that at 6 mph that 115 V-4 was just running on two cyls most of the day.
kamie posted 06-15-2005 03:53 PM ET (US)
Plotman,
your correct in that the two engines would be different and the boats are different, one Nantucket and one Classic 18.
The real deal is what props are the Nantucket owners using on their boats? The prop and the setup make a difference in how the boat performs and that is true if you have a 115-2 or a 150HP on the transom.

Riverwhaler,
If you believe that by hanging a 150HP on a Nantucket you don't need to care what prop you throw on it you should try some different props cause you just may be suprised
Riverwhaler posted 06-16-2005 12:55 PM ET (US)
kamie , didn't mean to imply I didn't care what was back there. In fact dealer sent me a four blade to try. Can't seem to locate any numbers on it. So as soon as it warms up and stops raining I will try it out.
Yiddil posted 06-17-2005 07:23 AM ET (US)
Kamie, thanks for confirming...hmmm.. didnt know you used 19 Gal. but I know I used 10!!! either way..thats great numbers for both...(Im still in and out on Internet)I agree with Kamie...props and set up make a big difference , thats why Im asking>...Nope Im not running a 115-4...Im running a 115-2!big difference!!!
Riverwhaler posted 06-21-2005 01:51 PM ET (US)
OK Carson got out yesterday after installing four bladed prop the dealer sent me. A Mercury A48-825900-19 , called a Vensura. Size is 14 by 19 pitch. The prop is capable of ventilation but it had all plugs in. It went very well, it seemed to get on plane faster and easier. Top sped was 47MPH by GPS, revs were 6000 and I could now at last trim the motor out without feeling it cavitating. Much smoother experience all around. Don’t know exactly how long it took to get on plane but it just popped up there with no effort. It is a Mercury prop with slightly smaller looking blades than the three blade I had previously. Remember the motor is mounted all the way down on last holes at the top of the mount. I think I am very satisfied with the whole situation now.
Perry posted 06-21-2005 05:30 PM ET (US)
That's great Allan. How heavy was your boat loaded (gas, people etc.)? I ran your numbers into the prop calculator and you are achieving around 6% slip which is pretty good. I think the Vensura prop needs to be running a little higher than you have it with the motor all the way down. You are getting to the upper range in RPM though which is good. Thanks for posting the results.
Perry posted 06-21-2005 05:49 PM ET (US)
I take delivery of my boat on friday and I think I may buy the same prop as you Allan. I had the dealer mount my motor two holes up and I am wondering if it needs to come down one hole with that Vensura prop. I may also have to go down an inch or so in pitch or experiment with the vent holes. Before I make the purchase I will try out the aluminum 15 X 17 prop that came with it and see how it performs. I know thge motor will be too high for that OEM prop.
LHG posted 06-21-2005 06:34 PM ET (US)
The Vensura (previously called Offshore until the Revolution-4 came out) can and should be run elevated, in the middle set of 5 five holes. This 4 bladed prop is really excellent and runs beautifully on an 19 Outrage II/Yamaha 150 that a friend has. It gives great overall hull lift, improving ride and speed over an aluminum. Offshore holding is excellent, although not as good as the high blade surface Revolution 4, probably the best of them all. It is not known as a really fast prop, and will probably run 1 or 2 MPH slower than a Laser II, Mirage Plus or Revolution 4 in same pitch. But everyone I know who has one really likes it, for engines in the 135-175 HP range. If all out top speed is not your game, this is a great prop, with really strong acceleration, offshore holding and mid-range speed. See mercurymarine.com for informative details on props.
I would check whaler.com for pitch and gear ratio considerations, and how that may effect a non-Merc higher reving 4-stroke 135 or 150. What line of props does BW ship on this hull with a 135 or 150
Riverwhaler posted 06-21-2005 09:25 PM ET (US)
If I moved my engine up two holes the anticav plate would be above the bottom of the boat by a good two inches. How would the propeller work at all being part way exposed. Maybe the Nantucket transom it extra high. Going to leave it where it is and run in the ocean this weekend. May go to Portsmouth NH or Maine.
Yiddil posted 06-23-2005 09:59 PM ET (US)
HIJacked again!:(
LHG posted 06-24-2005 03:03 PM ET (US)
Maybe I can help out. If the 115 2-stroke is mounted as it came from the factory, you want to be running an 18" Merc Vengeance. This should give you speed up to 42 MPH, if the boat will go that fast. Get rid of an aluminum prop on a nice boat like that. They just don't give you the maximum performance the engine can put out.
If you raise the engine one more hole, you might be able to use a Michigan Wheel "Rapture" in 19" pitch. Otherwise you want to use a 17" Rapture, since I hear they take a little more bite than a standard SS like the Vengeance. The Rapture series may give a little more lift to the hull, increasing speed slightly.
I like the Rapture props over the Stilettos, since they use Mercury's interchangeable hub. This greatly increases your ability to sell or trade the prop at a later date, since all brands can run it with the addition of a $37 hub purchase
highanddry posted 06-24-2005 03:43 PM ET (US)
"Nantucket owners..what prop are you using for which engine?"
Yiddal, you should have asked specifically about the 115. You did not, you asked a general question as noted in the quote above from your initial post. This does not lead me to think the thread limited to the 115 only. I am not sure why you think the thread is hijacked, I have found it informative.
I think you may have to play with the vent plugs to allow the 115 to spin up to get on plane, to get into the meat of the horsepower that you have available and still have enough pitch to produce economical cruising and decent top speed.
Unfortunately what you seek is a treasure that may not exist. You want an optimum propeller for a non optimum engine and hull combination. Kind of like shooting yourself in the foot just before running a marathon, cannot expect to find an easy solution. I worry that one could spend hundreds of dollars on props that could have been spent initially on the optimal engine---this bit for those who might be shopping for a Nantucket.
The prop on my 'tucket with Opti 150 is the stock Mirage Plus 17P. It seems to work fine, when the throttle is put forward, the 'tucket makes history of where it was effortlessly.
Hope you find the treasure you seek.
LHG posted 06-24-2005 04:27 PM ET (US)
The 115 Merc 2-stroke is a stronger engine than the same HP 4-stroke. It's a surprising performer on the Nantucket. Vengenace props do not come with the vent system.
highanddry posted 06-24-2005 07:57 PM ET (US)
"The 115 Merc 2-stroke is a stronger engine than the same HP 4-stroke. It's a surprising performer on the Nantucket. Vengenace props do not come with the vent system."
Well, it was asked what props might work best, not what venegence props work best, my thought is then get something other than a Vengence that does have the vents while experimenting. To bad not many places or people have props to loan, wish I could help you out there.
kamie posted 06-24-2005 08:15 PM ET (US)
Find that Vengeance 18p you got last year and we will throw that on when I get down to CPM.
If you want to get a 17p Rapture there is one on ebay for $70.00. Since Das Boat is in the water I wouldn't move the engine, if you want to try that we can do it if you need to pull the boat.
Yiddil posted 06-24-2005 09:16 PM ET (US)
THanks everyone:)Your insight is well taken....
This is what I said originally...
"Just curious to try a SS Vengence or some other kind with my 115 -2:) Tryed using a 14p recommended by BW and couldnt get on plane at all:( Had a 18 but didnt use it based on BW reomend.)????? very confused about this....thanks in advance for your help and advise..."
In any event....seems like Kamie and LHG hit it on the head, although I was looking to see what others would say...Ill do the 18 P Vengence next:)
By the way...my 115-2 is a treasure and works as LHG stated and Ive experienced..."It's a surprising performer on the Nantucket". So I have my treasure:)Ive not been disapointted once!....just looking to improve on a terriffic product!:) Dont expect to get any great MPH increase although Ive been told I may get 5 more...Want to experience the SS Vengence and see how it feels or some other prop...thats all:) I get up on plane pretty lick ity split..fast, crusie around at like 30-35 all day long at around 4000-4500 RMPs so its not about speed, just about tinkering:) THanks all:)

Yiddil posted 06-25-2005 11:32 PM ET (US)
Well, I picked up the 16 P and will get the 18P after that...me thinsk the 16 may not be worthy...whats ya think LHG???? was going to email you but couldn't...thanks in advance, Henry AKA THE YIDDIL
kamie posted 06-25-2005 11:39 PM ET (US)
I am going to bet the 18 is the one you will end up with. Since you have the 16, if I get down to CPM we can try it. I will bring the tools, you bring the bandaids.
whalerfan2 posted 06-27-2005 01:42 PM ET (US)
Yiddil: I found this link to be helpful:
http://www.mercurymarine.com/prop_selector
Also, try this one:
http://www.mercurymarine.com/everything_you_need_to_know_about_propellers5
These two sites helped explain to me why I had a hard time pulling a skiier with my 16 Dauntless.
RIVERWHALER:
I am looking at getting a Nantucket, and equipping it with a 150 Honda. How easy was it for you to swap out engines? Do you mind sharing the ugly details of the price difference?
Thanks!
Perry posted 06-27-2005 04:13 PM ET (US)
whalerfan2, I, along with Riverwhaler swapped out the Mercury for a new Honda on a Nantucket. Since this thread is about Nantucket propellers, I suggest you start a new thread asking about repowering a new Nantucket. Lots of good info to share.
LHG posted 06-27-2005 05:19 PM ET (US)
Mercury's prop charts indicate the 18" Vengenance is the right prop for your engine on a Nantucket. Should run about 40-42 MPH.
Yiddil posted 06-27-2005 10:32 PM ET (US)
THanks whalerfan2 , got it:)LHG Im sure your RIGHT ON TARGET!:) I may not even waste my time on the 16P...Ill just go and get that 18P and give back the 16P, getting 38 on the Aluminum stocked prop now...but Im told it may give me a differnt feel and some extra bite...will be interesting to see how it does with the 18P...Like I said before, not really looking for that much more speed, just tickering to see what feel differnt and maybe better....I have not been displeased with the standard Aluminum, or the 115-2 that came with "Das BOat" Actually, There isnt to much at all Ive been not pleased with were Das Boat is concerned:))The original specks for her with the 115-2 which are no longer posted talked about getting 40-42 as I recall, and talked to the issue of how well the 115-2 did up against the 150...thats probabaly the reason I just got the 115-2...I havn't been sorry with ths, my 1st Whaler:)Being retired Im out with her 3-5 times a week:))Gosh, Life is good:)Thanks again LHG, your always so helpful:))

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Author	Topic: Nantucket owners..what prop are you using for which engine?
Yiddil	posted 06-07-2005 03:43 PM ET (US) Nantucket owners..what prop are you using for which engine? Just curious to try a SS Vengence or some other kind with my 115 -2:) Tryed using a 14p recommended by BW and couldnt get on plane at all:( Had a 18 but didnt use it based on BW reomend.)????? very confused about this....thanks in advance for your help and advise...
Riverwhaler	posted 06-07-2005 04:09 PM ET (US) Yiddle you should have got the 150hp then prop wouldn't be such a ticklish problem. I try to tell everybody to get the max hp that boat allows. Then performance isn't a big deal. That being said trial and error is the way to find the right combo for your situation. Good luck. I come over to the coast as much as possible so I would be happy to give you a ride in a Nantucket with 150 Honda.
Marlin	posted 06-07-2005 04:15 PM ET (US) Henry, what prop(s) do you have now? We could try the 16" Vengeance off my Dauntless next time we get together. I'd like to try the 18" if you still have it. -Bob
Sal A	posted 06-07-2005 08:31 PM ET (US) Riverwhaler, I forgot that you originally got the 115 on your boat. I would love to hear about how you pimped your ride, and what your impressions of that Honda are. Yiddil, My prop: 14 x 19 Merc Vengeance
Riverwhaler	posted 06-07-2005 10:00 PM ET (US) Yiddil, not sure what you mean by pimped my ride but it did cost me quite a sum to change but in MY OPINION that is the best motor for that boat. First it is quiet, maybe even the quietest motor going. Second it is smooth running, you can feel the power change when the second lobes of the cam come into play. I put Mobil 1 oil in the crankcase and just run it all year. Change in the fall. Just add gas to the tank, thats all. Always starts instantly. Not going to buy another boat so one might as well be very happy from the get go. Now that retirement is gradually taking place I am going to play more so I could meet you on the coast some day.
Riverwhaler	posted 06-07-2005 10:04 PM ET (US) Sorry I now see that Sal was asking.
Yiddil	posted 06-07-2005 11:21 PM ET (US) Marlin. Was going to try a 16 next...14 was a bust...The 18 is around somewere and you can try that if you like...have to get it back from you know who.... Riverwhaler, you said..."Yiddle you should have got the 150hp then prop wouldn't be such a ticklish problem. I try to tell everybody to get the max hp that boat allows. Then performance isn't a big deal". Im not at all dis-pleased with the 115-2 with the standard prop WHaler put on her(aluminum)...if you have read my previous posts on "Das Boat" then you know Im actually very pleased with the motor I have...I can get up on plane almost as fast as a 150, and use less gas, and Im really not concerned about performance, doing 38 all day long...30 mph at 4000 rpms...as she runs really well. I was just trying out some other props to see what would work and what the differneces were......I get up on plane at 2000rpms...I ran her for 8 hours at the Potomac Swim event last weekend and only had to top off the tank with 20 bucks worth, 10 gallons...Im sure its hard for anyone to claim that with a 150... But the 14 SS Vengence was a bust even though WHaler recommends it, so we will try the 16 Marlin real soon, then the 18...and see what the differnces are...
Perry	posted 06-08-2005 02:08 AM ET (US) "I ran her for 8 hours at the Potomac and only had to top off the tank with 20 bucks worth, 10 gallons...Im sure its hard for anyone to claim that with a 150..." 8 hours of use and burned only 10 gallons of gas on a 19 foot boat? Give us a break! That's 1.25 gallons per hour. It would be difficult to get that kind of fuel economy on a 13 footer with a 30 HP motor.
highanddry	posted 06-08-2005 04:32 AM ET (US) I know there are reasons to go with smaller engines, I just don't know what they are. Now that my Opti 150 is loosening up the engines is smooth, efficient and has tons of power to spare. When I put the hammer down from a start she leaps up on plan even loaded and goes like a scalded cat. So far so good, fingers crossed but my Opti seems like a darn good engine, hope it is. Maybe playing with those vent plugs might allow the 115 engine to use a cupped stainless prop and still turn up enough to get on plane.
Riverwhaler	posted 06-08-2005 02:22 PM ET (US) Well what turns one person's prop may not turn anothers...... We should all get together and ride in each others Nantuckets then sit back over a coupla beers and say what nice boats we all have. Life goes on.
hwnwhaler	posted 06-08-2005 04:24 PM ET (US) Perry, I think that was a swim event, like escorting an outrigger race over here. SO, you know how it is when your ideling around 2-5 mph for 75% of the time, the gas just don't disappear that fast. Now, MPG is a much better gauge...imho. John
Perry	posted 06-09-2005 03:53 PM ET (US) Hey Riverwhaler, the dealer is about to mount the new Honda on my Nantucket and I was wondering what make and size propeller you have on your Honda BF150. Also do you know the RPM at wide open throttle on your boat? These answers will really help me decide what prop to buy. Thanks, Perry
Yiddil	posted 06-09-2005 08:27 PM ET (US) Well, its not to hard for me to belive, as i did the filling...and yes...I was running around @ 6mph 90% of the time!! Still try that with a 150 and i bet you use more:) Actually there was another nantucket layed out exacvtly the same at the Potomac Swim...Ill ask Daren how he did...but im sure it was probably the same as he has the same 115-2 I see the thread I started has "strayed" so let me ask again...what prop on what engine are you using and what recommendation for the 115-2 now that we know the 14p wont work well.........
Riverwhaler	posted 06-09-2005 08:28 PM ET (US) Perry, after all that discussion about props all I know is what is on the prop. It is a Mercury Marine Vengeance 48-16316-19P. At the present time I think it is cavitating a bit because the motor seems to be a bit high. Splash plate is about 1/2 inch above the bottom of boat and I can't trim out very far. Motor cannot be mounted any lower because of lip on engine mount. Dealer is sending another prop to try. This is not a problem when only 2 people are on board. If you send me a email I will return it with some photos. Still like the Honda tho and wouldn't want anything else. allan@vtstudio.com
kamie	posted 06-14-2005 09:05 PM ET (US) I ran with a 150 on a 18 Outrage and topped off the tank with 19 gallons. Same as Yiddil, @ 6 mph most of the day.
Plotman	posted 06-14-2005 10:01 PM ET (US) In a sense, that Mec 115 is a different technology than Kamie's 150 in that at 6 mph that 115 V-4 was just running on two cyls most of the day.
kamie	posted 06-15-2005 03:53 PM ET (US) Plotman, your correct in that the two engines would be different and the boats are different, one Nantucket and one Classic 18. The real deal is what props are the Nantucket owners using on their boats? The prop and the setup make a difference in how the boat performs and that is true if you have a 115-2 or a 150HP on the transom. Riverwhaler, If you believe that by hanging a 150HP on a Nantucket you don't need to care what prop you throw on it you should try some different props cause you just may be suprised
Riverwhaler	posted 06-16-2005 12:55 PM ET (US) kamie , didn't mean to imply I didn't care what was back there. In fact dealer sent me a four blade to try. Can't seem to locate any numbers on it. So as soon as it warms up and stops raining I will try it out.
Yiddil	posted 06-17-2005 07:23 AM ET (US) Kamie, thanks for confirming...hmmm.. didnt know you used 19 Gal. but I know I used 10!!! either way..thats great numbers for both...(Im still in and out on Internet)I agree with Kamie...props and set up make a big difference , thats why Im asking>...Nope Im not running a 115-4...Im running a 115-2!big difference!!!
Riverwhaler	posted 06-21-2005 01:51 PM ET (US) OK Carson got out yesterday after installing four bladed prop the dealer sent me. A Mercury A48-825900-19 , called a Vensura. Size is 14 by 19 pitch. The prop is capable of ventilation but it had all plugs in. It went very well, it seemed to get on plane faster and easier. Top sped was 47MPH by GPS, revs were 6000 and I could now at last trim the motor out without feeling it cavitating. Much smoother experience all around. Don’t know exactly how long it took to get on plane but it just popped up there with no effort. It is a Mercury prop with slightly smaller looking blades than the three blade I had previously. Remember the motor is mounted all the way down on last holes at the top of the mount. I think I am very satisfied with the whole situation now.
Perry	posted 06-21-2005 05:30 PM ET (US) That's great Allan. How heavy was your boat loaded (gas, people etc.)? I ran your numbers into the prop calculator and you are achieving around 6% slip which is pretty good. I think the Vensura prop needs to be running a little higher than you have it with the motor all the way down. You are getting to the upper range in RPM though which is good. Thanks for posting the results.
Perry	posted 06-21-2005 05:49 PM ET (US) I take delivery of my boat on friday and I think I may buy the same prop as you Allan. I had the dealer mount my motor two holes up and I am wondering if it needs to come down one hole with that Vensura prop. I may also have to go down an inch or so in pitch or experiment with the vent holes. Before I make the purchase I will try out the aluminum 15 X 17 prop that came with it and see how it performs. I know thge motor will be too high for that OEM prop.
LHG	posted 06-21-2005 06:34 PM ET (US) The Vensura (previously called Offshore until the Revolution-4 came out) can and should be run elevated, in the middle set of 5 five holes. This 4 bladed prop is really excellent and runs beautifully on an 19 Outrage II/Yamaha 150 that a friend has. It gives great overall hull lift, improving ride and speed over an aluminum. Offshore holding is excellent, although not as good as the high blade surface Revolution 4, probably the best of them all. It is not known as a really fast prop, and will probably run 1 or 2 MPH slower than a Laser II, Mirage Plus or Revolution 4 in same pitch. But everyone I know who has one really likes it, for engines in the 135-175 HP range. If all out top speed is not your game, this is a great prop, with really strong acceleration, offshore holding and mid-range speed. See mercurymarine.com for informative details on props. I would check whaler.com for pitch and gear ratio considerations, and how that may effect a non-Merc higher reving 4-stroke 135 or 150. What line of props does BW ship on this hull with a 135 or 150
Riverwhaler	posted 06-21-2005 09:25 PM ET (US) If I moved my engine up two holes the anticav plate would be above the bottom of the boat by a good two inches. How would the propeller work at all being part way exposed. Maybe the Nantucket transom it extra high. Going to leave it where it is and run in the ocean this weekend. May go to Portsmouth NH or Maine.
Yiddil	posted 06-23-2005 09:59 PM ET (US) HIJacked again!:(
LHG	posted 06-24-2005 03:03 PM ET (US) Maybe I can help out. If the 115 2-stroke is mounted as it came from the factory, you want to be running an 18" Merc Vengeance. This should give you speed up to 42 MPH, if the boat will go that fast. Get rid of an aluminum prop on a nice boat like that. They just don't give you the maximum performance the engine can put out. If you raise the engine one more hole, you might be able to use a Michigan Wheel "Rapture" in 19" pitch. Otherwise you want to use a 17" Rapture, since I hear they take a little more bite than a standard SS like the Vengeance. The Rapture series may give a little more lift to the hull, increasing speed slightly. I like the Rapture props over the Stilettos, since they use Mercury's interchangeable hub. This greatly increases your ability to sell or trade the prop at a later date, since all brands can run it with the addition of a $37 hub purchase
highanddry	posted 06-24-2005 03:43 PM ET (US) "Nantucket owners..what prop are you using for which engine?" Yiddal, you should have asked specifically about the 115. You did not, you asked a general question as noted in the quote above from your initial post. This does not lead me to think the thread limited to the 115 only. I am not sure why you think the thread is hijacked, I have found it informative. I think you may have to play with the vent plugs to allow the 115 to spin up to get on plane, to get into the meat of the horsepower that you have available and still have enough pitch to produce economical cruising and decent top speed. Unfortunately what you seek is a treasure that may not exist. You want an optimum propeller for a non optimum engine and hull combination. Kind of like shooting yourself in the foot just before running a marathon, cannot expect to find an easy solution. I worry that one could spend hundreds of dollars on props that could have been spent initially on the optimal engine---this bit for those who might be shopping for a Nantucket. The prop on my 'tucket with Opti 150 is the stock Mirage Plus 17P. It seems to work fine, when the throttle is put forward, the 'tucket makes history of where it was effortlessly. Hope you find the treasure you seek.
LHG	posted 06-24-2005 04:27 PM ET (US) The 115 Merc 2-stroke is a stronger engine than the same HP 4-stroke. It's a surprising performer on the Nantucket. Vengenace props do not come with the vent system.
highanddry	posted 06-24-2005 07:57 PM ET (US) "The 115 Merc 2-stroke is a stronger engine than the same HP 4-stroke. It's a surprising performer on the Nantucket. Vengenace props do not come with the vent system." Well, it was asked what props might work best, not what venegence props work best, my thought is then get something other than a Vengence that does have the vents while experimenting. To bad not many places or people have props to loan, wish I could help you out there.
kamie	posted 06-24-2005 08:15 PM ET (US) Find that Vengeance 18p you got last year and we will throw that on when I get down to CPM. If you want to get a 17p Rapture there is one on ebay for $70.00. Since Das Boat is in the water I wouldn't move the engine, if you want to try that we can do it if you need to pull the boat.
Yiddil	posted 06-24-2005 09:16 PM ET (US) THanks everyone:)Your insight is well taken.... This is what I said originally... "Just curious to try a SS Vengence or some other kind with my 115 -2:) Tryed using a 14p recommended by BW and couldnt get on plane at all:( Had a 18 but didnt use it based on BW reomend.)????? very confused about this....thanks in advance for your help and advise..." In any event....seems like Kamie and LHG hit it on the head, although I was looking to see what others would say...Ill do the 18 P Vengence next:) By the way...my 115-2 is a treasure and works as LHG stated and Ive experienced..."It's a surprising performer on the Nantucket". So I have my treasure:)Ive not been disapointted once!....just looking to improve on a terriffic product!:) Dont expect to get any great MPH increase although Ive been told I may get 5 more...Want to experience the SS Vengence and see how it feels or some other prop...thats all:) I get up on plane pretty lick ity split..fast, crusie around at like 30-35 all day long at around 4000-4500 RMPs so its not about speed, just about tinkering:) THanks all:)
Yiddil	posted 06-25-2005 11:32 PM ET (US) Well, I picked up the 16 P and will get the 18P after that...me thinsk the 16 may not be worthy...whats ya think LHG???? was going to email you but couldn't...thanks in advance, Henry AKA THE YIDDIL
kamie	posted 06-25-2005 11:39 PM ET (US) I am going to bet the 18 is the one you will end up with. Since you have the 16, if I get down to CPM we can try it. I will bring the tools, you bring the bandaids.
whalerfan2	posted 06-27-2005 01:42 PM ET (US) Yiddil: I found this link to be helpful: http://www.mercurymarine.com/prop_selector Also, try this one: http://www.mercurymarine.com/everything_you_need_to_know_about_propellers5 These two sites helped explain to me why I had a hard time pulling a skiier with my 16 Dauntless. RIVERWHALER: I am looking at getting a Nantucket, and equipping it with a 150 Honda. How easy was it for you to swap out engines? Do you mind sharing the ugly details of the price difference? Thanks!
Perry	posted 06-27-2005 04:13 PM ET (US) whalerfan2, I, along with Riverwhaler swapped out the Mercury for a new Honda on a Nantucket. Since this thread is about Nantucket propellers, I suggest you start a new thread asking about repowering a new Nantucket. Lots of good info to share.
LHG	posted 06-27-2005 05:19 PM ET (US) Mercury's prop charts indicate the 18" Vengenance is the right prop for your engine on a Nantucket. Should run about 40-42 MPH.
Yiddil	posted 06-27-2005 10:32 PM ET (US) THanks whalerfan2 , got it:)LHG Im sure your RIGHT ON TARGET!:) I may not even waste my time on the 16P...Ill just go and get that 18P and give back the 16P, getting 38 on the Aluminum stocked prop now...but Im told it may give me a differnt feel and some extra bite...will be interesting to see how it does with the 18P...Like I said before, not really looking for that much more speed, just tickering to see what feel differnt and maybe better....I have not been displeased with the standard Aluminum, or the 115-2 that came with "Das BOat" Actually, There isnt to much at all Ive been not pleased with were Das Boat is concerned:))The original specks for her with the 115-2 which are no longer posted talked about getting 40-42 as I recall, and talked to the issue of how well the 115-2 did up against the 150...thats probabaly the reason I just got the 115-2...I havn't been sorry with ths, my 1st Whaler:)Being retired Im out with her 3-5 times a week:))Gosh, Life is good:)Thanks again LHG, your always so helpful:))