RPS mount
- Thread starter paulj
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I have been giving this idea some thought as well. I did some measurements. There will be a small amount of non-linearity as a result of the arc of the rudderpost being 90deg. from the arc of the RPS. I believe it will be negligible as long as you keep the RPS ~12" away. The closer you mount it the more pronounced the non-linearity will be. The non linearity will increase the greater the angle. Most of the steering will be done with minimal rudder deflection. There are so many forces that are acting on the direction of sail that I believe this is just noise. It would be a wonderful trig problem to calculate it.
Actually the more I think about the problem as long as the the arcs are the same the non-linearity should cancel out. I measured the radius of the RPS and it is 5.5". The rudder post is 1.5", so if you place the connecting rod 4" from the rudderpost it should swing the same arc. Do I have this right?
All that talk about angles and mathematics ...
... reminds me of that old formula I learned in the Navy where "The pie of the thigh is directly proportional to the angle of the dangle." Not sure that one is relevant here?
BTW, I was looking around on a friends 310 at his installation done by the boat yard and here are the pictures.
... reminds me of that old formula I learned in the Navy where "The pie of the thigh is directly proportional to the angle of the dangle." Not sure that one is relevant here?
BTW, I was looking around on a friends 310 at his installation done by the boat yard and here are the pictures.
Here are the pictures
Sometimes my mouse clicks too fast.
The mounted his RPS on a small piece of aluminum bent in an L, with one side screwed to the bulkhead right in front of the rudder stock. His fluxgate compass is mounted right next to the rudder on the other side on the starboard side of the bulkhead, and his computer is mounted right around the corner in his port lazarrette. All components in about a 3-4' space.
Don't quite think this will work for a 310.
One really interesting thing about his boat (on a totally unrelated subject) is that he has an extra tube for his salon table along with blocks and a cushion with a hard bottom to turn his port seat into a double bed.
Sometimes my mouse clicks too fast.
The mounted his RPS on a small piece of aluminum bent in an L, with one side screwed to the bulkhead right in front of the rudder stock. His fluxgate compass is mounted right next to the rudder on the other side on the starboard side of the bulkhead, and his computer is mounted right around the corner in his port lazarrette. All components in about a 3-4' space.
Don't quite think this will work for a 310.
One really interesting thing about his boat (on a totally unrelated subject) is that he has an extra tube for his salon table along with blocks and a cushion with a hard bottom to turn his port seat into a double bed.
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I just realized that the beginning of the paragraph was deleted some how?
If the RPS is mounted vertically as it appears Paulj is trying to do, non-linearity may be present.
Here is the bracket I made for the RPS mount out of scrap anodized aluminum with stainless hardware. This will be mounted just behind the water heater. The swing arm will point aft with just enough clearance to the fuel tank. More pics to come.
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Well Fellows..........
I used the secant instead of the cosine.
It works just fine including the 60 degree cable stop locks.
paulj......:troll:
I used the secant instead of the cosine.
It works just fine including the 60 degree cable stop locks.
paulj......:troll:
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