A couple of years ago had some creaking and groaning that hadn't previously occurred. A few outings later........popped starboard shroud! Coincidence?
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| Creaking and groaning http://www.hobie.com/au/en/forums/viewtopic.php?f=14&t=36892 |
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| Author: | tparrish [ Tue Jul 19, 2011 4:06 pm ] |
| Post subject: | Creaking and groaning |
I recently noticed some creaking and groaning on my boat while on vacation at the beach. Normally I sail on an inland lake and have not noticed the noise before. The water had some fair sized swells but nothing too bad. Is this something to be concerned about, or do all older boats make a noise or two? |
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| Author: | TexKat [ Tue Jul 19, 2011 5:16 pm ] |
| Post subject: | Re: Creaking and groaning |
A couple of years ago had some creaking and groaning that hadn't previously occurred. A few outings later........popped starboard shroud! Coincidence?
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| Author: | MBounds [ Wed Jul 20, 2011 4:43 am ] |
| Post subject: | Re: Creaking and groaning |
tparrish wrote: I recently noticed some creaking and groaning on my boat while on vacation at the beach. Normally I sail on an inland lake and have not noticed the noise before. The water had some fair sized swells but nothing too bad. Is this something to be concerned about, or do all older boats make a noise or two? It's not just limited to older boats. Mine has made noise since day 1 (a brand new '07). A 16 will creak and groan as the hulls work independently of the trampoline frame. It's mostly the pylons working against the corner castings. Nothing to be concerned about.
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| Author: | Jman6631 [ Wed Jul 20, 2011 8:55 am ] |
| Post subject: | Re: Creaking and groaning |
Also check your frame for rigidity. The rivets could be loosening. I've read on here that some old salt speed demons would drill out all the frame rivets at the corners castings and replace them with larger 1/4" rivets in order to bring as much stiffness to the frame as possible. Then there is always glueing (epoxying) the frame together. I noticed some groaning when I first got mine but haven't done either of those, yet. But, I did determine my frame was 3.5" out of square. I loosened the pylon bolts, rigged cabling from corner to corner with turnbuckles and brought her back to square, then tightened the s$%t out of the tramp (leaving the cabling). Since then she sure sails better and slices through swells like buddahhh, and the groaning is gone. It's probably just in my head but she seems to tack better, too, and the helm seems more responsive. That all could just be wishful thinking after the fact, but, the old salts stiffened their rigs for a reason so why wouldn't I experience a least some performance improvement as a result of what I've done? |
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| Author: | jsloan999 [ Wed Jul 20, 2011 9:36 am ] |
| Post subject: | Re: Creaking and groaning |
Both my 1981 and 2008 Hobie 16's creak/groan but in differnt ways. The 2008 is much stiffer, but sounds like a old wooden ship. Has your tramp lacing loosened a bit? This will affect the stiffness of your frame, which in turn might cause noise. |
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| Author: | tparrish [ Wed Jul 20, 2011 10:32 am ] |
| Post subject: | Re: Creaking and groaning |
Thanks for all the replies! I will check the frame for square. The shrouds are less than a year old and the tramp was tightened just prior to the beach trip using a ratchet strap around the frame to deflect them in a little. I guess they lacings could have loosened but I didn't notice it. |
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| Author: | mmiller [ Wed Jul 20, 2011 10:40 am ] |
| Post subject: | Re: Creaking and groaning |
We have determined that sidebars are the major culprit in new boats. We now taper the sharp ends of the sidebar extrusions so they do not chatter, grunt, squeak as they move in the castings. |
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| Author: | Scott Hitz [ Tue Aug 09, 2011 2:16 pm ] |
| Post subject: | Re: Creaking and groaning |
My 1979 H16 did that when I first got it (a month ago) and what removed most of the creaking was spray Teflon (the dry kind) from Lowes. I sprayed it in profusely where the corner castings meet the hulls. I also sprayed the heck out of where the corner castings join the sidebars. It still has a minor creak once in a while but for the most part is not frequent enough to be noticeable. |
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| Author: | Crieke [ Wed Aug 10, 2011 7:38 am ] |
| Post subject: | Re: Creaking and groaning |
Still learning my boat, but mine creaks and groans some, especially when powering up. It's kinda like its talking to me. Like the rudder hummm! It says "faster--faster--FASTER!!!". |
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| Author: | ASDASC [ Wed Aug 10, 2011 12:12 pm ] |
| Post subject: | Re: Creaking and groaning |
Scott Hitz wrote: My 1979 H16 did that when I first got it (a month ago) and what removed most of the creaking was spray Teflon (the dry kind) from Lowes. I sprayed it in profusely where the corner castings meet the hulls. I also sprayed the heck out of where the corner castings join the sidebars. It still has a minor creak once in a while but for the most part is not frequent enough to be noticeable. I am completely new at this, but it seems that spraying a lubricant in the joints goes against a lot of what I have read. I agree that it would reduce the noise, but would also make it flex more, which is a speed penalty, right? Is all the creaking and groaning due to loose tramps? I am really not intending to be critical, but am just trying to learn. Good wind to all! |
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| Author: | fpichel [ Sun Aug 14, 2011 8:12 am ] |
| Post subject: | Re: Creaking and groaning |
Quote: I noticed some groaning when I first got mine but haven't done either of those, yet. But, I did determine my frame was 3.5" out of square. I loosened the pylon bolts, rigged cabling from corner to corner with turnbuckles and brought her back to square, then tightened the s$%t out of the tramp (leaving the cabling). HI Jman6631 Did you leave the cabling on the boat permanently? I'd love to see pictures of it. I've seen pro and con discussions here of a squaring wire rig under the tramp. I have a lot of slop between my 1981 hulls. I've got a new tramp, my side rails were already bend in from previous tramps, but I ratchet-strapped on the new one. |
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| Author: | Jman6631 [ Sun Aug 14, 2011 11:47 am ] |
| Post subject: | Re: Creaking and groaning |
Hey fpichel, I did leave the cabling on the boat. I've read the pros and cons too and so far I think the pros outweigh the cons. But that could change. I haven't had a lot of experience with them so far but I haven't had the "cheese-grater" effect or a safety issue with a capsize either. See if you can access these from my picassa web album: https://lh5.googleusercontent.com/-VLzR ... 252529.jpg https://lh5.googleusercontent.com/-Jkkv ... 520Rig.jpg It's not very complicated. You can get all the hardware at the local hardware store. One thing I made sure of was to push the cabling as far down to the topsides as possible. I reasoned this would provide the greatest clearance between the tramp above while also pulling from as close to the center of the pylons as possible. What you can't see is the aft rigging. But it's the same as the fore rigging only one set of gear around the pylon, obviously. You can see it barely in both pictures but I didn't photograph it specifically. What's also not shown are the pool noodle covers I zip tied over all this hardware to keep it from cutting through the tramp or otherwise causing an unpleasant scrape. Let me know if you need anything else. |
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| Author: | fpichel [ Sun Aug 14, 2011 1:49 pm ] |
| Post subject: | Re: Creaking and groaning |
Jman6631 wrote: I did leave the cabling on the boat. I've read the pros and cons too and so far I think the pros outweigh the cons. But that could change. I haven't had a lot of experience with them so far but I haven't had the "cheese-grater" effect or a safety issue with a capsize either. See if you can access these from my picassa web album: https://lh5.googleusercontent.com/-VLzR ... 252529.jpg https://lh5.googleusercontent.com/-Jkkv ... 520Rig.jpg That's great. Thanks for the pictures. I just noticed the rivets are coming loose on my front corners. I've got a bunch of slack between my hulls now. I guess I'll insure squareness before re-rivet. Then try the epoxy frame stiffening method or your hardware method. thanks again |
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| Author: | Jman6631 [ Sun Aug 14, 2011 9:17 pm ] |
| Post subject: | Re: Creaking and groaning |
Great, glad to help. Since you're re-riveting anyway why not go all the way and install 1/4" rivets as I describe at the top? It'd be the perfect time..... |
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| Author: | srm [ Mon Aug 15, 2011 7:43 am ] |
| Post subject: | Re: Creaking and groaning |
Those cables look freaking scary. Think I'd go the epoxy route or just live with some squeeks. sm |
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