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Reply to: Nacra Rudder System, Pivmatics and Bungee Setup

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[quote=P.M.][quote=windadict][quote=mummp][quote=windadict]What do you use to prevent tiller bars digging into back side of rudders in up position?[/quote]
A short piece of braided vinyl tubing slipped over the bungee before feeding through the tiller arms.  You could use a short scrap piece of garden hose.  Let me add that I hog ring the bungee together at a point very close to the rudders.[/quote]
 That is great idea, I will do that.

One other place of concern that I noticed on the rudders, is the outside edge, right below the bungee, which dig into the bottom edge of tiller arm when they are pulled all way up. Do you have anything to protect them?[/quote]
Let me clear up a few thing.  The only purpose of the short piece of vinyl tubing is to protect the trailing edge of the rudder from hitting into the tiller arm when raises up.  I kept a lot of tension on the bungee because I wanted the rudders to come all the way up and stop against the tiller arm end, hence the protective tubing.

[quote=hyperope]
That sounds about right.  Proper bungie cord is not that expensive.  Better to overestimate than under.  I fed through the tubes without pvc or vinyl tubing, although I can see how that would make it easier.  I'm just lazy.  Agree on hog rings for securing the bungies.  Once I got the bungies out the tube, with the rudder up, I stretched the bungie pretty tight and double hog-ringed as close to the tube as possible.  Then cut the excess and allowed the end to retract into the end of the tube, a neater look.[/quote]
Eric,  the info above should clear up the tubing.  As for the hog rings,  you need to put a hog ring on the bungees as close as possible, under tension, to the rudder blade, in the aft most position, when the blade in in the down position.  When you do this it prevents the bungee from falling to the sides of the rudder blade.  I think you are talking about hog rings where the bungee comes out the "front" of the tubes, near the cross bar, and that works fine.  As I said earlier, I overhand knot the bungee on the front end, pull it tight, let the knot work itself down to the pin or bolt than attaches the crossbar hardware, and finish with a square knot.  This just eliminates the hog ring.  If you look at the picture enlarged you can see the bungee stuffed into the end.

I'll look to see if I have some more pictures for Zach.  Zach, if you click on the pictures they are pretty large and show a lot of detail.[/quote]

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