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Author Topic:   1992 Whaler Walkaround 23Re-Power

rvazquez23 posted 10-04-2012 10:10 PM ET (US)
[This thread is closed. See the duplicate thread in the PERFORMANCE discussion at
http://continuouswave.com/ubb/Forum4/HTML/008124.html
--jimh]
Hello. Has anyone re-powered a Boston Whaler WHALER 23 WALRAROUND Whaler Drive with a single engine? Thanks--Rafael

6992WHALER posted 10-05-2012 12:01 PM ET (US)
Rafael,
Use the search function. There has been talk about doing this but I am not aware of anyone who has done it.
John
Peter posted 10-05-2012 06:48 PM ET (US)
Have never seen a 23 Walkaround with "Whaler Drive" powered or repowered with a single outboard. Given that they were typically powered by a pair of 150 HP or greater V6 2-stroke outboards that weighed 400 to 450 lbs, anything but the 800+ lb 4-stroke Yamaha V8 outboard may not put enough weight on the transom.
Tom W Clark posted 10-05-2012 10:30 PM ET (US)
I have never seen, nor even heard of, a 23' Walkaround with a single outboard, Whaler Drive or not. I doubt one exists.
Compare the classic 25' Whaler to the 23' Walkaround Whaler Drive:
Revenge 25 Whaler Drive -- LOA: 26'-6"
Boat weight: 4250 pounds
Maximum horsepower -- 450
23' Walkaround Whaler Drive -- LOA 26'-4"
Boat weight: 4300 pounds
Maximum horsepower -- 400
Very comparable, yes?
No, not at all. Look at the minimum horsepower to plane satisfactorily:
Revenge 25 Whaler Drive -- 115 HP
23' Walkaround Whaler Drive -- 275 HP
The Dougherty designed 25' classic Whaler hull is vastly more efficient that the Van Lanker designed post-classic 23' hull.
K Albus posted 10-05-2012 10:41 PM ET (US)
Here's a 23 Walkaround, no Whalerdrive, powered with a single 250: http://i512.photobucket.com/albums/t329/kalbus/Miscellaneous/ BW23WalkaroundStandardTransom.jpg
Tom W Clark posted 10-05-2012 11:02 PM ET (US)
Well, I'll be damned.
The 23' Walkaround (without Whaler Drive) has a minimum horsepower rating of 225. I have to presume this boat planes satisfactorily...so long as it is lightly loaded.
6992WHALER posted 10-05-2012 11:25 PM ET (US)
Just curious, has anyone ever seen a revenge 25 with only 115 on it?
revengewanted posted 10-06-2012 12:37 PM ET (US)
No, I have never seen a Revenge 25 WT with a single 115 but I can say that my own Revenge 25 WT would get up to plane with a 1989 135HP Mercury when necessary.
It is also interesting to note that the Whaler Brochure circa 1993 shows a nice picture of a 23 Walkaround (no Whaler Drive)with twin Evinrude 150's. Hence, why not a single 350 for a re-power? It would be an expensive experiment!
george
Ridge Runner posted 10-06-2012 12:49 PM ET (US)
Why wouldn't you go with the E-Tec 300?
Tom W Clark posted 10-06-2012 01:01 PM ET (US)
300 HP is only 9 percent over the minimum horsepower rating. It would be like putting a single 125 on a Revenge 25 Walk-Through Whaler Drive.
I wouldn't do that.
Tom W Clark posted 10-06-2012 01:05 PM ET (US)
Like George could, I can plane my Revenge 25 Walk-Throughh with only one of it's motors.
With a single 150 mounted almost 15 inches off-center and overpropped by 4 inches of pitch, the boat gets on plane easily and has a top speed in excess of 38 MPH.
I wouldn't try that on a 23' Walkaround Whaler Drive either.
K Albus posted 10-06-2012 03:51 PM ET (US)
My mistake - that's a single E-TEC 225 on a 23 Walkaround. http://i512.photobucket.com/albums/t329/kalbus/Miscellaneous/DSCN0755. jpg (Photo by Jim Hebert)
revengewanted posted 10-06-2012 05:25 PM ET (US)
A closer look at the brochure for 1993 reveals that the Whaler 23 Walkaround Whaler Drive requires dual engines. The Whaler 23 Walkaround Outboard does not.
However I still wonder if, say, a 350 Yamaha wouldn't work satisfactorily.
martyn1075 posted 10-07-2012 11:31 AM ET (US)
I don't see why a V8 350 Yamaha wouldn't work. Is it the best choice maybe not. The engine is just a beast it might look a little out of place as well but it should still offer the power required to lift that boat and power it through the water. Single vs double again argument when discussing its pros and cons.
Jeff posted 11-05-2014 03:07 PM ET (US)
I am reviving this thread because I remembered it after posting information in another thread. I think the info I posted would also be good to be added here.
23's in general and the Whaler Drives especially need twins for low speed maneuverability. You could get away with a big single on a standard notched transom, but I personally would not do it. The way the hull is designed has a unique and varied deadrise where at displacement (no wake / docking) speeds the keel at the bow is actually deeper in the water than the props at the stern. This makes it really tough to get that bow to swing, and if you get caught in a cross wind you can get in big trouble if you are not on top of things. The Whaler Drive even has more of a difficult time swinging at displacement speeds here is why. With the standard / notched transom on the Outboard model the prop thrust in reverse is being forced completely under the hull. On the Whaler Drive the motors and props are set back 3'+ back from the transom and are raised up a bit. This makes a lot of the reverse thrust get pushed against the flat of the transom and not under the hull.
On our 23 Walkaround Whaler Drive I am always under heavy power tractor steering (engines straight and using one engine in forward and the other in reverse) to get the hull to swing while docking. If it's blowing, I am never without power because you do not want to let the boat get caught by the wind.
Another thing I do you to help the maneuvering on the Whaler Drive model is, I keep the motors trimmed at least vertical if not up a bit to get the prop thrust move under the hull. On the Whaler Drive if the motors are trimmed all the way in (down) the motors are actually 5-10 degrees in from vertical. This is helpful when coming on to plane because it allows you to keep the bow down on "take-off". However at docking displacement speeds it is actually not only directing the thrust at the transom but up at the bounyance box as well greatly reducing the effectiveness of the thrust.
Here is a video of me piloting our 23 Walkaround Whaler Drive into a berth on a dead calm day. You can see it takes a fair amount of throttle to get it to swing.
http://youtu.be/noPs-MqGf7w

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Author	Topic: 1992 Whaler Walkaround 23Re-Power
rvazquez23	posted 10-04-2012 10:10 PM ET (US) [This thread is closed. See the duplicate thread in the PERFORMANCE discussion at http://continuouswave.com/ubb/Forum4/HTML/008124.html --jimh] Hello. Has anyone re-powered a Boston Whaler WHALER 23 WALRAROUND Whaler Drive with a single engine? Thanks--Rafael
6992WHALER	posted 10-05-2012 12:01 PM ET (US) Rafael, Use the search function. There has been talk about doing this but I am not aware of anyone who has done it. John
Peter	posted 10-05-2012 06:48 PM ET (US) Have never seen a 23 Walkaround with "Whaler Drive" powered or repowered with a single outboard. Given that they were typically powered by a pair of 150 HP or greater V6 2-stroke outboards that weighed 400 to 450 lbs, anything but the 800+ lb 4-stroke Yamaha V8 outboard may not put enough weight on the transom.
Tom W Clark	posted 10-05-2012 10:30 PM ET (US) I have never seen, nor even heard of, a 23' Walkaround with a single outboard, Whaler Drive or not. I doubt one exists. Compare the classic 25' Whaler to the 23' Walkaround Whaler Drive: Revenge 25 Whaler Drive -- LOA: 26'-6" Boat weight: 4250 pounds Maximum horsepower -- 450 23' Walkaround Whaler Drive -- LOA 26'-4" Boat weight: 4300 pounds Maximum horsepower -- 400 Very comparable, yes? No, not at all. Look at the minimum horsepower to plane satisfactorily: Revenge 25 Whaler Drive -- 115 HP 23' Walkaround Whaler Drive -- 275 HP The Dougherty designed 25' classic Whaler hull is vastly more efficient that the Van Lanker designed post-classic 23' hull.
K Albus	posted 10-05-2012 10:41 PM ET (US) Here's a 23 Walkaround, no Whalerdrive, powered with a single 250: http://i512.photobucket.com/albums/t329/kalbus/Miscellaneous/ BW23WalkaroundStandardTransom.jpg
Tom W Clark	posted 10-05-2012 11:02 PM ET (US) Well, I'll be damned. The 23' Walkaround (without Whaler Drive) has a minimum horsepower rating of 225. I have to presume this boat planes satisfactorily...so long as it is lightly loaded.
6992WHALER	posted 10-05-2012 11:25 PM ET (US) Just curious, has anyone ever seen a revenge 25 with only 115 on it?
revengewanted	posted 10-06-2012 12:37 PM ET (US) No, I have never seen a Revenge 25 WT with a single 115 but I can say that my own Revenge 25 WT would get up to plane with a 1989 135HP Mercury when necessary. It is also interesting to note that the Whaler Brochure circa 1993 shows a nice picture of a 23 Walkaround (no Whaler Drive)with twin Evinrude 150's. Hence, why not a single 350 for a re-power? It would be an expensive experiment! george
Ridge Runner	posted 10-06-2012 12:49 PM ET (US) Why wouldn't you go with the E-Tec 300?
Tom W Clark	posted 10-06-2012 01:01 PM ET (US) 300 HP is only 9 percent over the minimum horsepower rating. It would be like putting a single 125 on a Revenge 25 Walk-Through Whaler Drive. I wouldn't do that.
Tom W Clark	posted 10-06-2012 01:05 PM ET (US) Like George could, I can plane my Revenge 25 Walk-Throughh with only one of it's motors. With a single 150 mounted almost 15 inches off-center and overpropped by 4 inches of pitch, the boat gets on plane easily and has a top speed in excess of 38 MPH. I wouldn't try that on a 23' Walkaround Whaler Drive either.
K Albus	posted 10-06-2012 03:51 PM ET (US) My mistake - that's a single E-TEC 225 on a 23 Walkaround. http://i512.photobucket.com/albums/t329/kalbus/Miscellaneous/DSCN0755. jpg (Photo by Jim Hebert)
revengewanted	posted 10-06-2012 05:25 PM ET (US) A closer look at the brochure for 1993 reveals that the Whaler 23 Walkaround Whaler Drive requires dual engines. The Whaler 23 Walkaround Outboard does not. However I still wonder if, say, a 350 Yamaha wouldn't work satisfactorily.
martyn1075	posted 10-07-2012 11:31 AM ET (US) I don't see why a V8 350 Yamaha wouldn't work. Is it the best choice maybe not. The engine is just a beast it might look a little out of place as well but it should still offer the power required to lift that boat and power it through the water. Single vs double again argument when discussing its pros and cons.
Jeff	posted 11-05-2014 03:07 PM ET (US) I am reviving this thread because I remembered it after posting information in another thread. I think the info I posted would also be good to be added here. 23's in general and the Whaler Drives especially need twins for low speed maneuverability. You could get away with a big single on a standard notched transom, but I personally would not do it. The way the hull is designed has a unique and varied deadrise where at displacement (no wake / docking) speeds the keel at the bow is actually deeper in the water than the props at the stern. This makes it really tough to get that bow to swing, and if you get caught in a cross wind you can get in big trouble if you are not on top of things. The Whaler Drive even has more of a difficult time swinging at displacement speeds here is why. With the standard / notched transom on the Outboard model the prop thrust in reverse is being forced completely under the hull. On the Whaler Drive the motors and props are set back 3'+ back from the transom and are raised up a bit. This makes a lot of the reverse thrust get pushed against the flat of the transom and not under the hull. On our 23 Walkaround Whaler Drive I am always under heavy power tractor steering (engines straight and using one engine in forward and the other in reverse) to get the hull to swing while docking. If it's blowing, I am never without power because you do not want to let the boat get caught by the wind. Another thing I do you to help the maneuvering on the Whaler Drive model is, I keep the motors trimmed at least vertical if not up a bit to get the prop thrust move under the hull. On the Whaler Drive if the motors are trimmed all the way in (down) the motors are actually 5-10 degrees in from vertical. This is helpful when coming on to plane because it allows you to keep the bow down on "take-off". However at docking displacement speeds it is actually not only directing the thrust at the transom but up at the bounyance box as well greatly reducing the effectiveness of the thrust. Here is a video of me piloting our 23 Walkaround Whaler Drive into a berth on a dead calm day. You can see it takes a fair amount of throttle to get it to swing. http://youtu.be/noPs-MqGf7w