[quote=leeboweffect]I buy these (3/8"-16 X 1" UNC Hex Head Nylon Bolt), cut the head off and hack saw a screw driver slot in the end then cut them to length. Note that Murrays specifies 13 threads per inch, but standard UNC is 16 and that is what fits my castings.
http://www.ebay.com/itm/162036799258?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT
Right now I am using the actual bolt with the head left on cut to a 1/2" length screwed in from the inside. The rudder rests right on the bolt head which is about 1/4" thick.
[img]http://www.thebeachcats.com/gallery2/main.php?g2_view=core.DownloadItem&g2_itemId=124551&g2_serialNumber=4[/img]
[img]http://www.thebeachcats.com/gallery2/main.php?g2_view=core.DownloadItem&g2_itemId=124554&g2_serialNumber=4[/img]
My boat is an '83 Nacra 5.0 which seems to balance for me "just right" (slight weather helm) with this amount of rudder rake and about 5 degrees of mast rake (5th hole up on the shroud adjuster for me).
If you want more rudder rake (less weather helm), cut the head off and slot the end, then you have the magic Murrays $ 9 screw (nylon instead of Delrin, but they seem to work fine). You will likely need to use Blue Loctite with just the set screw as there is nothing for it to tighten up on to prevent movement.
If you want less rudder rake (more weather helm), add washers under the bolt head one at the time until it feels perfect.<!-- editby --><em>Edited by leeboweffect on Aug 26, 2016 - 02:45 PM.</em><!-- end editby --> [/quote]
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