Re: [Amel Yacht Owners] Generator exhaust

michael winand

Thanks Joel. Appreciate your advice 
I do have confidence in the guy who is doing the installation. 
He is aware of the electrical system on the Amel. 
I am interested in also repowering the tmd22.  If you have any suggestions  I would appreciate your input. 
He has fitted a beta  engine to an amel. He rewired the whole engine harness with all new sensors to allow the ground return. I have been advised from a older amel owner that this guy is the most knowledgeable mechanical /electrical  that he had ever come across in 15 years of ownership. 

I would like to have someone very knowledgeable  with Amel. School me in the systems. I am in Australia if you have any recommendations? 
Sincerely Michael  251 

On Wed, 15 Aug 2018 at 11:51, Joel Potter jfpottercys@... [amelyachtowners]

Gently, and with all due respect, I would like to suggest to you that it would be a good idea to have someone very knowledgeable with Amel boats and their unique systems, in their entirety, spend some time with you on your boat. Part of the excellence of Amel boats is in the unconventional way Amel does several things that produce more satisfactory overall results than conventional practice.

Bill Rouse, when he asked you if you would install an isolated ground system generator, was talking about the big picture regarding the Amel 12 and 24 volt DC electrical system. Isolated ground, also described as full earth return and an isolated negative electrical system is when all of the DC energy comes out of the battery, to the device it powers, and then directly back to the battery bank via a closed loop system. This is precisely the same system used on most metal boats world wide. It prevents a  whole bunch of electrical and galvanic problems and makes this DC system better for all the elements of the entire system.

If you install a 240 volt AC genset with a 12 volt DC conventional ground system for starting and the alternator for starting battery recharging, you will have electrical and galvanic trouble until this situation is changed. The sad fact is  a majority of marine electrical contractors and/or installers think this not “a big deal” and pay little heed to the difference between conventional ground and isolated negative ground as it pertains to the DC electrical system..

If you dig deep into the incredible wealth of information that has been presented in this group, you will find many admonishments not to change anything on your Amel until you are absolutely familiar with what you intend to change.

Don’t be hesitant to ask for help if you are not 101% sure that the changes you entertain will produce positive results. 

Good luck with your new to you Amel and be sure to have fun with it. 

Office 954-462-5869 

On Aug 14, 2018, at 7:05 PM, michael winand mfw642000@... [amelyachtowners] <amelyachtowners@...> wrote:


The new genset is the same as the Onan regarding the isolation mounting and the electrical connection. It has a alternator instead of the generator for charging the 12v battery. Control panel where the Onan remote  start was, giving temperature, oil pressure, amps output /load Ect. 

 The retired Onan with 1000hrs was nonfunctional, so we knew that before purchasing. Removed the head due to lack of compression in 2 cylinders.  Found rust in cylinder  and a slight chance of color in the fuel pump housing. I thought it was not a good idea to rebuild the engine. 
We are just trying to get the best install of the new one. 
Thanks for your help 
Michael 251 

On Wed, 15 Aug 2018 at 0:42, Bill Rouse brouse@... [amelyachtowners]

Are you installing an isolated ground generator?


CW Bill Rouse
Admiral, Texas Navy
Commander Emeritus

Amel School
720 Winnie St
Galveston Island, TX 77550

+1(832) 380-4970

Any opinions and conclusions expressed in this message are solely those of the author and should not be construed as representing the opinion of an expert. Manufacturers' and Expert's precautions must be considered when dealing with mechanical and/or electrical systems to ensure that you are NOT harmed, and/or the device and/or system is NOT ruined. If in doubt, do not touch any mechanical and/or electrical device or system referred to above.

On Sat, Aug 11, 2018 at 11:22 PM michael winand mfw642000@... [amelyachtowners] <amelyachtowners@...> wrote:

Hi, I am installing a new genset into a super maramu 2000.

The engine is a kubota with a 50mm hose going to the vetas water lock. On the outlet of the water lock the hose reduces to 40mm. This is how the original is installed. It has a reducer 50 to 40mm glued  into the water lock.

Can anyone help with the reasons why the hose is reduced in diameter? 
The generator supplier  advised to have a 50mm hose going on the water lock outlet. 

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