Power Drill Outboard Motor

The next addition to my wooden boat had to be a homemade outboard motor.  I saw a video only of a guy who made one using a power drill as the power source.  This was my inspiration for this portion of the boat project.

I purchased a propeller from Minn Kota which is a company that sells trolling motors.  For the drive shafts I used a total of 3 twelve inch drill extensions.  For the bend in the drive train, I used a 90 degree drill adapter.  My plan was to use the rudder that I made for sailing as the mount and steering mechanism for the drive train. 

The most involved portion of this project was to somehow fix the propeller to the drive shaft.  The propeller itself came with a bolt and a nut that I assume is used to mount it to the trolling motor.  So, I decided to use these as it seem the easiest.  First I cut the head off the bolt so that I could hammer it into the end of the drill extension. This worked out pretty well as the treads pretty much functioned to hold the bolt into the extension. 

After I hammered the bolt into the end of the extension, I drilled a hole through the bolt so that a small pin would slide through.  The inside of the propeller had a small notch that I assumed was the mechanism that it locked into the drive shaft.

I made the pin from a piece of heavy gauge wire I just cut to fit into the slot of the propeller.  After everything was cut and drilled and made, I assembled the propeller onto the drive shaft and secured it with the nut that it came with.  Overall, the construct seems very strong and I think it will work very well.