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shade of knucklehead
06-25-2011, 06:02 PM
Pop made this to cut the hole for a bowthruster tube in an old Grand Banks

http://i1234.photobucket.com/albums/ff404/Shade_O_Knucklehead/IMG_0908.jpg

http://i1234.photobucket.com/albums/ff404/Shade_O_Knucklehead/IMG_0907.jpg

Made out of stuff laying around except for the piece of all thread. He spent a couple days building it, and about an hour cutting the hole. Now we can install them in wood boats or fiberglass boats.

BrianW
06-25-2011, 07:57 PM
That is cool!

As I shop for boats, I always marvel at the wood ones that have bow thrusters, and wonder "how did they do that?

Have you guys installed several already? Any opinions on electric vs hydraulic?

That set up look portable... could work most anywhere.

bobbys
06-25-2011, 07:59 PM
how big is the hole?

BrianW
06-25-2011, 08:03 PM
Looks like it gonna be about 8 inches. If that's a 2x4 being used as a rear support on the jig stand. (left side of picture)

bobbys
06-25-2011, 08:12 PM
Very nice however not to take anything away from POP but i have to put out a table saw with a guard on it and hide the one i really use from OSHA.
POP needs to make a fake one with a guard on it:D

shade of knucklehead
06-25-2011, 08:50 PM
Its the first bow thruster we have installed. This one is electric.

Guards were removed so I could take a picture. Haha

epoxyboy
06-25-2011, 08:58 PM
Excellent! I could never figure out how they made those holes so tidily.

pete

shade of knucklehead
06-25-2011, 09:01 PM
Well, the instructions that came with the thruster basically said to mark the hole really carefully and then cut it out.

If it was a fiberglass boat it would be simpler, because the hole could be sloppy, with a wood boat and then need to be able to caulk around the tube and have it watertight we figured the hole had to be cut accurately.

Duncan Gibbs
06-25-2011, 10:49 PM
I'm assuming the central 'axle' is augured through and through plumb and perpendicular to the CL of the boat. Is there some kind of sacrificial registration plate on the CL/stem of the bow to ensure both sides are identical?

Neato! You should post these shots in Pless's homemade tools thread.

L.W. Baxter
06-25-2011, 11:26 PM
Do you have something for removing barnacles.

Breakaway
06-25-2011, 11:32 PM
http://www.ecbowthrusters.com/a-joe-molinaro-ecbowthruste.jpg

Ever seen this?

Cool machine POP built.

Kevin

shade of knucklehead
06-26-2011, 07:36 AM
I'm assuming the central 'axle' is augured through and through plumb and perpendicular to the CL of the boat. Is there some kind of sacrificial registration plate on the CL/stem of the bow to ensure both sides are identical?

Neato! You should post these shots in Pless's homemade tools thread.


No, we spent a bit of time leveling the boat and moving the front over so that it was perpendicular to the tracks the car is sitting on.
I was going to post them there but figured a separate thread would be better since its not a common tool, plus I have tons of homemade tools to post in there as soon as I snap pics of them.

shade of knucklehead
06-26-2011, 07:38 AM
http://www.ecbowthrusters.com/a-joe-molinaro-ecbowthruste.jpg

Ever seen this?

Cool machine POP built.



Kevin

Oh, and the hole was 7 and something in diameter
That is how the guys that installed a bowthruster in another boat we work on did it.