Re: [Amel Yacht Owners] Bow thruster motor repair?

Rick Grimes

Hi Pat! Yes. The estimate to service and repair was $2,400 so I figured I would use the bow thruster as little as possible until I could get some help and do it myself....but in retrospect, not a good idea.  It is a very good idea to try it again when I disconnect the shaft...but before I yank the motor...first week in January...Hope you have a Merry Christmas and look forward to crossing paths again! 


Rick & Linda Grimes
S/V "Rascal"
SM2K (#404)
Sent on the run from my iPhone

On Dec 11, 2015, at 10:20 AM, Patrick Mcaneny sailw32@... [amelyachtowners] <amelyachtowners@...> wrote:


Rick, As I related to you when you had your boat here on the Sassafras, and I inspected your bow thruster. I and the mechanics at Georgetown believed that the bearings were badly worn and the gears sounded rough. I don't think you had the bow thruster serviced and it probably has salt water in it. Is it possible that  they could have seized , not allowing the motor to turn . I don't know the answer to that, but I guess it could be possible. After you detach the shaft from the motor , why don't you try the motor again and see if it spins.
Good Luck,
Pat SM Shenanigans
-----Original Message-----
From: rickgrimes1@... [amelyachtowners] <amelyachtowners@...>
To: amelyachtowners <amelyachtowners@...>
Sent: Thu, Dec 10, 2015 2:43 am
Subject: [Amel Yacht Owners] Bow thruster motor repair?

This is a Hail Mary but I'm looking to get my bow thruster motor rebuilt somewhere in San Juan, PR. My boat is in the water at Sun Bay Marina in Fajardo.  There are three or four electric motor companies that come up in a search but I have no clue who might do the work.  Does anyone have any experience with anyone in Puerto Rico who might point me in the right direction--or any advice about what to look for? 

Also, can anyone walk me through the steps to remove the bow thruster motor while keeping the bow thruster in place (while boat is in the water) if this is doable?

Steve and Liz Davis of Aloha are here and have been helping me troubleshoot and I have been corresponding with Beaute Olivier offline (who has been great).  We have concluded that the problem is in the motor itself.  I was getting a blue arc when engaging the joystick--and no motor.  Af ter eliminating potential issues related to the magnetic switches (e.g., bypassing the SP switch with a shunt), we measured the amps and volts when engaged for two seconds. It was drawing 511 amps when engaged and dropping from 26v to 21v with heat and smoke coming from the motor itself.  Conclusion: something wrong with the motor--possibly bushings or worse.  

I saw the posts from Dr Lamb? but his work (stripping down the motor and innovating a fix) is way above my skill set so I am left with taking the motor somewhere to have it repaired...

Thoughts anyone?

Rick Grimes
S/V Rascal
SM2K (#404)

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