Newporter 40 Together

a beautiful boat should sail forever.

Understanding the hydraulic steering, which in theory is simple, had a small complication that took me a little research to overcome. In short, I have an original 1960's Crowell hydraulic helm station in the pilot house that came with the boat. There weren't to many of these, but if someone needs info contact me. I also purchased a latter model Hynautics hydraulic helm for the hard top dodger helmstation that I added to the boat. To make a long story short, the Crowell unit was pre check valve, using a manuel shutoff valve hooked up as a bypass valve, while the Hynautics unit uses check valves which allow switching from one helm station to another without performing a manual operation. Once I realized I was using two generations of technical development everything became clear.
One idea to focus on is the various forms and combinations of helm stations. The fundamental principles and layout are best illustrated by a simple one helm power boat. Then we move up to two hydraulic helm stations at different locations. Another alternative is a hydraulic station at one location and a "mechanical" station the other location. This last combo is what Ack used for Newporters. A hydraulic station in the cabin and a "mechanical" quadrant in the cockpit.
If you look at the photo you see the slave cylinder connected to the rudder stock. If the rudder is being turned by the wheel in the cockpit (as in the original Newporter setup) you can see that the arm on the rudder post will move the slave cylinder piston (or "ram"), which will cause fluid to flow at the hydraulic station inside, creating a lot of resistance. Therefore the original hydraulic helm station had to have a shut off valve set up as a bypass to allow the fluid to circulate. (as far as the fluid the recommendation is Dexron II or III, type A).
However, my arrangement is two hydraulic stations, one with check valves and the other with shut off valves (that are essentially manual check valves) because the unit is pre check valve technology for hydraulic boat steering.
Looking at the photo, remember I rebuilt my cockpit so the hatch is up on the lazzerette. Looking at the hydraulic hose fittings, you can see a "T" where the second lines to the other helm station will come in. Another note is the emergency tiller receiver (green) in case the hydraulic go down. And finally, for the tiller to work, the slave either has to have a hydraulic by pass between the two lines, or be able to be mechanically disconnected. I had bought the fittings for a hydraulic bypass, but short of a significant mounting effort it seemed very vulnerable, introducing a failure area for the whole system in what was supposed to be an emergency response. So I switched to just pulling the pin between the arm off the rudder and the cylinder ram, ie a mechanical disconnect so the hydraulic fluid was not pumped in reverse by the slave cylinder.
This is a far cry from all the information for a good understanding of hydraulic steering, but Nigel Calder, in Boat Owners Mechanical and Electrical Manual, does a fantastic job in short order.

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THE ROSTER

Muf, our Keeper of the Roster, has updated it.  But he still needs information on boats out there that he doesn't have, like new owners, old owners, where any of the boats are.  We don't post the roster on the web site, it is only sent to owners.  Please send him anything you might have, or call him at:      

gmuf48@aol.com   

909 561 4245

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Captain Clyde's Newporter  sites:

newporters.blogspot.com

and  

newporter.ning.com

The Ning site has been given a reprieve.   I have  transferred my Ning site to the blogspot site and will leave it there. I am keeping my Ning site open as a home for my photos and drawings.

Many of my photos there do not relate to Newporters, but a search through my collection may prove useful for your studies.

My drawings are not accurate in many respects as a result of the PAINT program used to draw them, There is no accurate scale and at best they are only useful to indicate some specific detail.  Some are inaccurate because of my poor memory.  Use them to help you think, not as a detailed presentation of the subject matter.

If any of you want to start a web site I suggest you remember what has happened to both my Ning site and this site (which is a Ning site) and remember that my Blogspot site is free and Blogspot's owner (Google) has promised to keep it that way.

 

Clyde's email:

camgphil@msn.com 

Put 'Newporter' on Subject Line.  Email is the best way to contact me.  I do not regularly look at this site or its messaging system.  Email will get to me post-haste. 

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