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[Amel Yacht Owners] Bowthruster Problem
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Ian Shepherd <g4ljf@...>
Hi Dimitris,
it sounds like you have overcooked the bow thruster through prolonged use. If you have the 10 HP motor, it will draw around 160 amps, and with no forced cooling in a confined space, it will get very hot after a few minutes operation. It is not designed for other than short bursts of operation. The smoke will have come from the insulative lacquer on the motor windings. It may be OK after a cool down period, but it's now possible that the insulation will break down sometime sooner, rather than later. From what you say, smoke comes from the motor as soon as you use it now, even when cold? Is this correct? If so, you may need to get the motor rewound by a motor repair company. I would check the current on the Link 10 when the bow thruster is operated. If it's much more than 160 amps, you probably have damaged the windings on the motor. The oil should not be affected, but if I were you, I would drop the bow thruster tube down a few inches and check to see if the shaft turns freely. It may just be that you have a mechanical problem which is loading the motor more than normal. Whilst you are doing this, check for wear around the 4 bolt holes and make sure that the countersunk screw that holds the brass ring inside the tube is secure. What is the hull number of your boat? The design has changed recently. I would doubt that your insurance company would pay for a repair, but I maybe wrong. If you say that you had to over use the thruster to save the boat, they may be sympathetic! Good luck. Ian Shepherd SM 414 Crusader
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Hanspeter Bättig <hanspeter.baettig@...>
Dear Ian
toggle quoted messageShow quoted text
very interesting what you mentioned. Question? How will you messure 160 Amps on the bowhruster cabels? With the Volt-meter and the Amperemeter clamp. Such an instrument cost you about more the 1000$ and please calibrate it. Maybe you have a great deal with General Electric or ABB. Best regards and good winds Hanspeter SM #16
----- Original Message -----
From: Ian Shepherd To: amelyachtowners@yahoogroups.com Sent: Thursday, April 01, 2004 5:14 PM Subject: Re: [Amel Yacht Owners] Bowthruster Problem Hi Dimitris, it sounds like you have overcooked the bow thruster through prolonged use. If you have the 10 HP motor, it will draw around 160 amps, and with no forced cooling in a confined space, it will get very hot after a few minutes operation. It is not designed for other than short bursts of operation. The smoke will have come from the insulative lacquer on the motor windings. It may be OK after a cool down period, but it's now possible that the insulation will break down sometime sooner, rather than later. From what you say, smoke comes from the motor as soon as you use it now, even when cold? Is this correct? If so, you may need to get the motor rewound by a motor repair company. I would check the current on the Link 10 when the bow thruster is operated. If it's much more than 160 amps, you probably have damaged the windings on the motor. The oil should not be affected, but if I were you, I would drop the bow thruster tube down a few inches and check to see if the shaft turns freely. It may just be that you have a mechanical problem which is loading the motor more than normal. Whilst you are doing this, check for wear around the 4 bolt holes and make sure that the countersunk screw that holds the brass ring inside the tube is secure. What is the hull number of your boat? The design has changed recently. I would doubt that your insurance company would pay for a repair, but I maybe wrong. If you say that you had to over use the thruster to save the boat, they may be sympathetic! Good luck. Ian Shepherd SM 414 Crusader ------------------------------------------------------------------------------ Yahoo! Groups Links a.. To visit your group on the web, go to: http://groups.yahoo.com/group/amelyachtowners/ b.. To unsubscribe from this group, send an email to: amelyachtowners-unsubscribe@yahoogroups.com c.. Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
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koenvelleman <no_reply@...>
Hi, You can measure the current with a clamp DC multimeter for
example DCM268 (up to 1000A in AC and DC)from Velleman Components (www.velleman.be). Relax price is only a fraction of what You mentioned... Fair Winds, Koen --- In amelyachtowners@yahoogroups.com, Hanspeter Bättig <hanspeter.baettig@b...> wrote: Dear IanWith the Volt-meter and the Amperemeter clamp. Such an instrument cost you about more the 1000$ and please calibrate it. Maybe you have a great deal with General Electric or ABB. prolonged use. If you have the 10 HP motor, it will draw around 160 amps, andwith no forced cooling in a confined space, it will get very hot after afew minutes operation. It is not designed for other than short bursts ofoperation. windings. It may be OK after a cool down period, but it's now possiblethat the insulation will break down sometime sooner, rather than later.From what you say, smoke comes from the motor as soon as you use it now, evenwhen cold? Is this correct? If so, you may need to get the motor rewound bya motor repair company. I would check the current on the Link 10 when thebow thruster is operated. If it's much more than 160 amps, youprobably have damaged the windings on the motor.the bow thruster tube down a few inches and check to see if the shaftturns freely. It may just be that you have a mechanical problem which isloading the motor more than normal. Whilst you are doing this, check for weararound the 4 bolt holes and make sure that the countersunk screw that holdsthe brass ring inside the tube is secure. What is the hull number of yourboat? The design has changed recently.but I maybe wrong. If you say that you had to over use the thruster tosave the boat, they may be sympathetic! Good luck.---------- Yahoo! Groups LinksService.
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