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Pusher fan

2.3K views 8 replies 6 participants last post by  wbeadlescomb  
#1 ·
I was wondering what size motor would I need for a pusher fan on a 16/36 boat
 
#5 ·
A fan won't flip the boat or weigh it down. Just collecting all of the required items, can be difficult. I had what I needed for it. 2" aluminum pipe, 2 2/8 flange bearings, a bender for the shroud, a 13 hp engine, a teleflex throttle cable, some small pulleys, 3" and 4" aluminum pipe to make two steering drums, some stainless cable, a long turnbuckle, some cable clamps, and we had made a drunk chicken cooker, I used for the motor mount. I bought a 2 3/8" press fit bearing for the bottom, and cut some 6" aluminum pipe to shell the bearing. The six inch pipe also fit the flange bearing. A good hole saw set, and someone with a small lathe, and a welder. A sawzall will cut aluminum just fine. Then there is the expensive part, the prop. Of course I had to remove the muffler, and flange mount a 1" pipe muffler, out to the side. The teleflex cable has to be stiff enough to stay out of the prop. I have never had a problem with mine.

As always,,,, should you disagree feel free to comment.
 
#6 ·
Personally, I wouldn't waste my time or money on a project like that, but if you "have" to do it. I'd get a Predator 11 hp and put a 32" 3 blade hascon on it. That way , when you flip it, you won't be outta a chit load of money.
 
#7 ·
A fan won't flip the boat or weigh it down. Just collecting all of the required items, can be difficult. I had what I needed for it. 2" aluminum pipe, 2 2/8 flange bearings, a bender for the shroud, a 13 hp engine, a teleflex throttle cable, some small pulleys, 3" and 4" aluminum pipe to make two steering drums, some stainless cable, a long turnbuckle, some cable clamps, and we had made a drunk chicken cooker, I used for the motor mount. I bought a 2 3/8" press fit bearing for the bottom, and cut some 6" aluminum pipe to shell the bearing. The six inch pipe also fit the flange bearing. A good hole saw set, and someone with a small lathe, and a welder. A sawzall will cut aluminum just fine. Then there is the expensive part, the prop. Of course I had to remove the muffler, and flange mount a 1" pipe muffler, out to the side. The teleflex cable has to be stiff enough to stay out of the prop. I have never had a problem with mine.
Just for safety I also put a 1 12" pipe inside of the 2".
As always,,,, should you disagree feel free to comment.
 
#8 ·
I did test that rig on my 12' alumicraft boat. It was not enough thrust to flip it. It steered so badly that I took it off right away. Its all just a learning experience. But you can always put it on another boat when you get a wider one. That's the great thing about aluminum. It is easily worked.