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Amel Super Maramu 2000

Main Mast Furler Box Transmission
Leroy Somer vs Bonfiglioli

Leroy Somer Mini Bloc MVA
(I believe model M33C with 1/60 reduction but have also seen on the forum MVA-60-NJ-M-H-M)
Leroy Somer Mini Bloc MVA (4.3 MB .pdf)

Bonfiglioli Model VF44 with configuration P1 70 P63 B14 B3 70:1 reduction

 

Overhaul the Bonfiglioli is a ittle bigger.
 Voltage adjustment Genset ONAN MDKAL Amel Super Maramu 2000

 

The first issue I see is the position of the holes attaching the electric motor
They are 3 on the Leroy Sommer and 4 on the Bonfiglioli, therefore they are at a different angle.
 Voltage adjustment Genset ONAN MDKAL Amel Super Maramu 2000

 

Side by side
 Voltage adjustment Genset ONAN MDKAL Amel Super Maramu 2000

 

On the Leroy Somer the distance between the holes is 65 mm
 Voltage adjustment Genset ONAN MDKAL Amel Super Maramu 2000

 

The Bonfiglioli will have to be drilled to match the Leroy Somer
 Voltage adjustment Genset ONAN MDKAL Amel Super Maramu 2000

 

The shaft from the electric motor was 10 mm on the Leroy Somer
 Voltage adjustment Genset ONAN MDKAL Amel Super Maramu 2000

 

And 10 mm as well on the Bonfiglioli
 Voltage adjustment Genset ONAN MDKAL Amel Super Maramu 2000

 

The shaft space for the winch on the boom (for the outhaul) was difficult to measure, but over 19 mm on the Leroy Somer
 Voltage adjustment Genset ONAN MDKAL Amel Super Maramu 2000

 

On the Bonfiglioli the shaft space was only 16 mm
The inside will have to be machined to be enlarged to 19 or so mm
unless the shaft itself is reduced to 16 or so mm to fit inside the Bonfiglioli
 Voltage adjustment Genset ONAN MDKAL Amel Super Maramu 2000

 

The width of the 4 bolts holding the transmission (and its electric motor was 60 mm on the Leroy Somer
 Voltage adjustment Genset ONAN MDKAL Amel Super Maramu 2000

 

And it was also 60 mm on the Bonfiglioli
 Voltage adjustment Genset ONAN MDKAL Amel Super Maramu 2000

 

Another concern was how long were the bolts on the Bonfiglioli
 Voltage adjustment Genset ONAN MDKAL Amel Super Maramu 2000

 

Fairly short
 Voltage adjustment Genset ONAN MDKAL Amel Super Maramu 2000

 

With plenty of space to bolt a longer bolt (as these hold the transmission to the boom)
 Voltage adjustment Genset ONAN MDKAL Amel Super Maramu 2000

 

These are size 5 mm .80 thread
 Voltage adjustment Genset ONAN MDKAL Amel Super Maramu 2000

 

Here are different views of these 4 bolts
 Voltage adjustment Genset ONAN MDKAL Amel Super Maramu 2000

 

Not knowing the proper sequence, some bolts have been removed already on the picture
 Voltage adjustment Genset ONAN MDKAL Amel Super Maramu 2000

 

Another view
 Voltage adjustment Genset ONAN MDKAL Amel Super Maramu 2000