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Rear tow pylon on ’90 SN |
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dbrown 
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Joined: August-23-2006 Location: United States Status: Offline Points: 5 |
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 Topic: Rear tow pylon on ’90 SNPosted: April-03-2007 at 4:20pm |
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Looking for a little help. Only once last year did we break out the tubes. I attached it to the rear pylon behind the rear bench. (I call it a pylon, not sure the proper term) After some riding I brought the tubes in and noticed the towing had loosened the bolt below and thus caused the entire pylon to loosen. The result, the pylon dug a small groove into the gel coat.
I am looking to combat this problem in the future. I took the seat out and found that there was only a nylon bolt holding the pylon on from the bottom. Should I simply add a washer and lock nut to ensure that the unit will not come undone, or is there something else I should do to make sure I'm not pulling this seat out next year? |
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dbrown
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Posted: April-03-2007 at 4:21pm |
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Stainless steel nylon lock bolt. I apologize.
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tnplicky
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Joined: December-22-2006 Location: C'trl Illinois Status: Offline Points: 333 |
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Posted: April-03-2007 at 9:13pm |
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I had the exact same thing happen on my '95 SN. Not only did I pull the tube from the rear, but I also skied from there on occasion when we had 2 friends along. I didn't feel like making everyone pile up front or lay on the floor while I skied. One of the brawbacks of a closed bow ski boat - more than 4 people and it gets crowded in a hurry. I managed to tighten mine down once I realized what was happening, but I'm not sure how long it will hold up w/o doing something else. I was thinking of trying to add a sleeve around the neck of the rear pylon that would swivel instead of loosening the bolt. I'll let you know if I have any luck, but I am a few weeks away yet from breaking the boat out and putting it in the water.
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bkhallpass
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Joined: March-29-2005 Location: United States Status: Offline Points: 4723 |
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Posted: April-03-2007 at 9:19pm |
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I'm confused. I thought that model boat had
a spool on the back for towing. I thought the spool was supposed to swivel, but I could be wrong. BKH |
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Livin' the Dream
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tnplicky
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Posted: April-03-2007 at 10:01pm |
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dbrown
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Posted: April-03-2007 at 10:59pm |
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I agree with TN. BKH it is a spool, but it certainly is not designed to swivel. My thought are a lock washer and nut.
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Randy_in_Ohio
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Joined: September-13-2006 Location: N. Canton, OH. Status: Offline Points: 1891 |
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Posted: April-04-2007 at 12:43am |
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Mine doesn't swivel, but the black coating has cracked and peeled off. Has anyone ever painted one of these?
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8122pbrainard
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Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Posted: April-04-2007 at 5:24am |
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The rear pylon I saw, did not swivel. I think if it does then it's loose. I would put a nylock nut on it plus a removable thread locker (locktite). It sounds like a common problem. It's another reason for not pulling TUBES!!
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TRBenj
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Posted: April-04-2007 at 7:38am |
I powdercoated mine. After seeing how its mounted I dont plan on pulling from it, but powder is more durable than paint if I change my mind. When I removed it, I believe it had a nylock nut on there- which I assume to be factory. |
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M3Fan
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Posted: April-04-2007 at 9:01am |
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Yeah, when I saw how that thing was connected I'd never pull from it. I think the instruction manual says to never pull more than 2 skiers from it- I'd rather not risk ripping a big hole in the deck!!!
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2000 SN GT40 w/99 Graphics/Gel
2016 SN 200 OB 5.3L DI https://forum.fifteenoff.com |
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tnplicky
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Posted: April-04-2007 at 8:07pm |
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If they didn't want you to pull from it, they never should have put it on the boat in the first place!
I can see where it is not designed to pull a 5 person pyramid, but it should be able to pull a couple of kids on a tube w/o coming loose. I would have expected a better design from CC. I am still going to chech out some type of sleeve to go over the spool that will swivel/rotate. |
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8122pbrainard
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Posted: April-05-2007 at 6:55am |
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Tim, You had better check out the mounting as well since just adding a sleeve over the spool will not strengthen it. From what M3 has to say, it sure sounds like the engineers at CC were out to lunch on this one. I've seen tubes dive under water and snap tow ropes.
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David F
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Posted: April-05-2007 at 11:05am |
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Mine has an 2"x2" (aprox.) aluminum backing plate under the deck. The nylock nut should suffice. If not, it needs to be replaced. Snug it up good a tight and you should be fine unless the hole as become enlarged.
BTW, like Tim, I powder coated my non-swiveling spool. I use it all the time (tubes) with no problems. |
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Darrel
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Posted: April-05-2007 at 1:47pm |
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I have seen some Mastercrafts that have a thin plastic/nylon type sleeve that rotates with your rope. Less wear-n-tear on your ropes and the pylon/spool. Anyone know of a source or product that would duplicate this?
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Mark Mel
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Posted: April-05-2007 at 3:05pm |
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David F
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Posted: April-05-2007 at 3:16pm |
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You could take the spool off that contraption and bolt it through the deck easy enough.
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Darrel
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Posted: April-06-2007 at 1:54pm |
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The stuff i was looking for is a lot less contraption and simpler. About the thickness of a credit card, plastic or nylon type material. It slides around the existing pylon where the rope wraps and takes the friction, your rope rides over the top and sees no friction. Thanks
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tnplicky
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Joined: December-22-2006 Location: C'trl Illinois Status: Offline Points: 333 |
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Posted: April-07-2007 at 4:25pm |
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I was thinking of going cheap first, similar to Darrel's suggestion. I haven't looked for anything on the market, but thought about trying to find some PVC plumbing pipe the correct dia., cutting it to the correct height, and slitting it so I can snap it over the rear pylon to act as a swivel. If that doesn't work, I might try to buy something.
My friend's MC has a main pylon that has a white nylon swivel portion where the rope attaches. (similar to the one Mark posted) It does help prolong rope life, as the rope sees no relative movement between it and the pylon. The boat's still in storage, but I might break it out next week. I'll have to see how my rear pylon is mounted. I seem to recall a 3" x 10" plate underneath the fiberglass the last time I tightened it up. I'll let you all know if I have any luck figuring something out. |
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tnplicky
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Posted: May-29-2007 at 9:01pm |
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Here's what I ended up doing. I have only used it once, but it works good.
I bought a 1-1/4" drain tube from a hardware store, $1.89, cut it with a hacksaw to the correct width, about 5/8" for my rear pylon, cut a vertical slit in it, sanded the rough edges, and slipped it around the pylon to provide a sleeve that will swivel with the rope so that the pylon bolt doesn't come loose. 
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Randy_in_Ohio wrote: