Maramu Gearbox identification


James Alton
 

Hello fellow Amelians,

   I would like to locate spare gearboxes for the main mast and boom curlers on my 1987 Amel Maramu.  Amel has not been able to help me with this since my spars are by Nirvana and were not made by Amel.  I have done some searching and cannot find a match for what I have on my boat.  I will attach some photos below and a description, any help appreciated.

Best,

James
SV Sueno
Maramu #220

Description:  Right angle gear box with 1/2"or 13.9mm input shaft and 1"or 25mm hollow output shaft.  Gear ratio 73:1.  Mounting flange to bottom of boom is 44mm OD with 4 - holes at 35mm centres.  





Craig Briggs
 

Hi James,
That looks like the standard reduction gear on Amels of that era, like my SN. If so, it may be a Bonfiglioli Model VF44 Configuration P1 70 P63 B14 B3, which is readily available from many suppliers.
Cheers, Craig


James Alton
 

Craig,

   Thanks a lot for the help.  If there is a supplier that you like to use for ordering these please let me know.  

Best,

James
SV Sueno
Maramu #220

On Dec 10, 2019, at 11:35 PM, Craig Briggs SN 68 Sangaris via Groups.Io <sangaris@...> wrote:

Hi James,
That looks like the standard reduction gear on Amels of that era, like my SN. If so, it may be a Bonfiglioli Model VF44 Configuration P1 70 P63 B14 B3, which is readily available from many suppliers.
Cheers, Craig


Craig Briggs
 

James,
I got mine from US Distributor: Drivetech Automation; 5401 NW 102nd Ave #146; Sunrise, FL33351 954.746.9800.
They were $220 each plus tax & shipping (a few years ago).
You will have to grind off some of the cooling fins on the mainsail furler to fit it inside the mast (at least on my SN). This is what AMEL did, I'm sure and it has no effect on the operation (the fins would only be needed for high speed continuous operation in an industrial application). You will need to reuse the delrin mounts and, as I recall, you need to bore a couple of holes in the cover to match the delrin block. You can add Zerk grease fittings if you wish.
Good luck with it,
Craig


James Alton
 

Craig,

I am amazed that you found a US source for these boxes! Thanks for sharing, I have added this information to my Sueno file.
I will be in Florida myself pretty soon and will follow up. I agree with what you said about the cooling fins not being needed since our usage is of short duration.

Thanks,

James
SV Sueno
Maramu #220

On Dec 11, 2019, at 5:18 PM, Craig Briggs SN 68 Sangaris via Groups.Io <sangaris=aol.com@groups.io> wrote:

James,
I got mine from US Distributor: Drivetech Automation; 5401 NW 102nd Ave #146; Sunrise, FL33351 954.746.9800.
They were $220 each plus tax & shipping (a few years ago).
You will have to grind off some of the cooling fins on the mainsail furler to fit it inside the mast (at least on my SN). This is what AMEL did, I'm sure and it has no effect on the operation (the fins would only be needed for high speed continuous operation in an industrial application). You will need to reuse the delrin mounts and, as I recall, you need to bore a couple of holes in the cover to match the delrin block. You can add Zerk grease fittings if you wish.
Good luck with it,
Craig