When looking at a sheet line operating system there are several factors to consider and the last is cost. This is the heart of the EC12 and there have been many different driving units over the years. Today, the best that you can get is the RMG 280DL. Various models of RMG can be seen at regatta because of the changes Rob Guyatt makes in the ever quest to be current with design and technology. We have no data but it would be my guess that about 95% of the boats in the class use this winch.
You need about 16.5 inches of sheet line travel between the jib fairlead and a bow mounted pivot point. In addition to this you want fine resolution of movement over 20 degrees at close haul. The size and design of a drum for the winch is critical for this resolution. The most popular design is the spiral that allows fine movement at close haul and exponential speed when sheet to full out.
Whatever driver the system will have needs to have this resolution and sheet line travel. While a race is won by tactics and planning on the water, the ability to micro manage the sheets going to weather is imperative for full performance. A quarter of an inch of travel can be huge for the sail tuning set.
The size of the drum and the number of rotations in the servo need to be combined to achieve the above. Without R&D in the shop I do not see this Hitec servo getting the job done...maybe with a gearbox add on but I doubt it. I think it would be interesting to know what they designed this servo for.
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