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| Loose Rudder in Lower Casting http://www.hobie.com/forums/viewtopic.php?f=13&t=62606 |
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| Author: | Bheflin [ Sun Apr 29, 2018 2:42 pm ] |
| Post subject: | Loose Rudder in Lower Casting |
I have a 79' H18 with original rudder castings. I noticed one of my rudders has a lot of "play"/ movement in the lower casting, should I tighten the bolt more so it reduces the play but still allows the appropriate movement to raise and lower the rudders? |
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| Author: | flatlander [ Mon Apr 30, 2018 10:04 am ] |
| Post subject: | Re: Loose Rudder in Lower Casting |
There is a plastic shim kit available to take up the slack or you can cut your own and place between rudder and housing Tightening the bolt through this cast housing may cause them to crack...not a remedy. Another thought. Unless the rudders are moving excessively (chattering), when going downwind, you may do nothing. Going upwind, the rudders will be pressed against the housing, due to lateral force, and will not move. |
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| Author: | srm [ Mon Apr 30, 2018 12:20 pm ] |
| Post subject: | Re: Loose Rudder in Lower Casting |
Unless we're only talking about removing a 1/32nd of an inch of slop or less, you will need to shim the rudders in the castings as described above. If you over-tighten the bolt you risk breaking the casting. Old milk jug plastic works just fine. Cut out some discs, slide them between the rudder and the casting, put the bolt in the casting and whack it with a hammer to punch through the shim. If you're running old lexan rudders, then you may need several shims to build up the thickness. The EPO and newer composite rudders are thicker (and much better rudders all around) and should not require many shims for a snug fit. While you have the rudder system apart, check the holes in the rudders as well. If they are enlarged or ovalized, use some epoxy to fill them in and re-drill for a snug fit. sm |
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| Author: | Bheflin [ Tue May 01, 2018 6:42 pm ] |
| Post subject: | Re: Loose Rudder in Lower Casting |
Thank you for the great replies. I will look into the shims to remove the slack. Not sure if it's more then 1/32, it feels that way though. |
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| Author: | OlderBowman [ Thu May 03, 2018 4:23 am ] |
| Post subject: | Re: Loose Rudder in Lower Casting |
another item that will help prevent further wear is to reduce any rudder humming that occurs, (if you experience it). if you have the lexan rudders, cleaning up the leading edge and removing any side molding bulge at the aft edge gives a cleaner exit for water flowing off the rudder. that and a flat trailing edge. there's a thread here somewhere that demonstrates it. |
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| Author: | Bheflin [ Sat May 05, 2018 9:28 pm ] |
| Post subject: | Re: Loose Rudder in Lower Casting |
OlderBowman wrote: another item that will help prevent further wear is to reduce any rudder humming that occurs, (if you experience it). if you have the lexan rudders, cleaning up the leading edge and removing any side molding bulge at the aft edge gives a cleaner exit for water flowing off the rudder. that and a flat trailing edge. there's a thread here somewhere that demonstrates it. Thank you! did that last weekend, putting her on the water tomorrow, we'll see if it worked. |
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