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  #1  
Old 05-21-2011, 07:49 PM
reaghcharles reaghcharles is offline
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Building new Boat
Hello, I'm new to building boats with engines,

My question is, how do I attach a boat propeller to a vehicle engine mounted in the boat?

Thank you
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Old 05-21-2011, 07:51 PM
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gonzo gonzo is offline
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If you are installing an automotive engine, please read the marinizing threads. You can find out how not to blow up or go up in flames. After that, you will need either marine gears or fabricate a double sided thrust bearing holder.
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Old 05-21-2011, 08:28 PM
reaghcharles reaghcharles is offline
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Would it be hard to fabricate one?
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Old 05-21-2011, 08:37 PM
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gonzo gonzo is offline
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Yes, it has to take the reverse and forward thrust of the propeller. I think you are way over your head.
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Old 05-21-2011, 09:29 PM
reaghcharles reaghcharles is offline
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Haha, yes I think I am..and at my age..most would say don't...but I'm wanting to do this..so I am willing to do what it takes.
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Old 05-21-2011, 09:34 PM
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It makes no sense to take automotive equipment, re-invent the wheel and make it square. There are plenty of used marine powerplants for not too much money. What is your reason to fabricate parts that won't work all that well anyway.
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Old 05-21-2011, 09:42 PM
reaghcharles reaghcharles is offline
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Haha, alright fine.

Me, brother and fiance want to build an amphibious vehicle, that is the reason I am asking.

I know this is a huge task, and none of us are experienced for such...but still...I know how to do the "hull"bottom of the truck to make it "float" and I know how to keep it water tight that much I understand and ahve gotten done on the truck,

I just haven't been able to find any information on adding the propeller to run off the same engine, I know there are a few that use this setup..like the military dukw.

Any help would be much thanked
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Old 05-21-2011, 10:10 PM
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KnottyBuoyz KnottyBuoyz is offline
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Everything I needed to know about marinizing a road vehicle I learned from Top Gear!

http://www.youtube.com/watch?v=WTVPPTV-bQM
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Old 05-21-2011, 10:35 PM
reaghcharles reaghcharles is offline
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Thank you knotty
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Old 05-21-2011, 10:51 PM
Nurb Nurb is offline
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Take a look at the aquada:
30 mph Amphibious Car

The UK Dutton kit
amphibian

And Rambat's sterndrive amphibian
Prototype Amphibious Sports car
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Old 05-21-2011, 11:11 PM
reaghcharles reaghcharles is offline
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Thank you Nurb
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Old 05-22-2011, 12:10 AM
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You need to add a PTO. It can be mechanical or hydraulic.
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Old 05-22-2011, 12:38 AM
reaghcharles reaghcharles is offline
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Whats a PTO again?
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Old 05-22-2011, 01:29 AM
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Power Take Off, common on farm equipment.

Are you on the east or west coast?

-Tom
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  #15  
Old 05-22-2011, 01:43 PM
reaghcharles reaghcharles is offline
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West Coast
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