Select to expand quote
MAGNESIUM said..
Ramona which of those two on gumtree would you go for ?
Only the old Fleming Major showed and that was way over priced.
If you have a lathe or know some old pensioner with a lathe that's looking for something to do, then making your own replica monitor is the way to go. Use the dimensions and ratios of the fleming, aries or monitor, they are all the same. They look different but they work exactly the same. Slight differences in the method of course setting the air blade, but that's it. I made a replica monitor simply because it had more access to the parts and I could easily modify the lever lengths etc. The bevel gears are readily available in brass or Delrin.
Or, you can use a Z crank style windvane steering system like the Walt Murray style. I made one of these and used it successfully on two yachts. The Z crank does not give the auto feedback you get with bevel gears however. The original WM 20/20 design used to cost $20 but the increase in plumbing pipe fittings has made it dearer now.
walt-murray.info/ This is one of my earlier Walt Murray designs.
When I wanted better feedback I went with a monitor copy. The monitor layout is easy to replicate but you can also steal ideas from the others. I used the weight adjustment system from the late model Fleming.
This is the monitor copy.
The SS is all from a scrap yard. The bevel gears from the USA [the dearest part of the lot]. The Monitor uses a SS chain for course setting. This unit uses rope on a pulley. Bearings on the lower unit are Delrin. SS ball bearings for the wind blade are skateboard bearings.