Prop Stuffing Cord Types |
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tjamesbo
Senior Member Joined: July-13-2008 Location: United Kingdom Status: Offline Points: 110 |
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Posted: July-01-2011 at 2:49pm |
Just renewed my prop stuffing 1/4 " as measured by drill method . Got three rings in and nut just done up to clear and allow the safety collet on. Now just idled round from launch to jetty it looks tight but no drips evident , slackened it off still no drips evident There appears to be melted waxy black stuff at the Nut end Is this normal I got the cord at a chandlers that mostly do barges and canal cruisers . could i have got the wrong stuff ?? I took it for a 4-5min run at between 1500 & 2000 rpm to see if it bedded in and how hot it got, it was very warm to touch ( but no risk of burning hands ) I know it needs a few drops per minute to lube / cool the seal What should I do next????
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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James,
You didn't get the wrong packing but it does sound like you did get the older type that's a wax and graphite impregnated flax rope. There's nothing wrong with it but it does need more water than the newer "Gortex" teflon type packing. I suggest loosening the gland and see if it will run cooler and get some water through it. |
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tjamesbo
Senior Member Joined: July-13-2008 Location: United Kingdom Status: Offline Points: 110 |
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thanks I'll try it at the weekend
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tjamesbo
Senior Member Joined: July-13-2008 Location: United Kingdom Status: Offline Points: 110 |
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I took it for a breif run bit of idling and 5-7 mins towing a skier
when we came back it was quite hot ( stuffing gland ) touchable but not too hold on grip wise, back at the jetty, not a drip hot or cold, the nut is slackened right off, its up against the safety collett now so i am not keen on undoing any more. should i just keep doing short runs in the hope it will bed in and start dripping . |
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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If it doesn't loosen up and start to get some water through, you may end up having to pull the packing and start over. I'd say you got it too tight to start. This is fairly common because some feel the big nut requires a big wrench! Actually, all that's needed in most cases is just tight by hand.
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Morfoot
Grand Poobah Joined: February-06-2004 Location: South Lanier Status: Offline Points: 5320 |
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I have my hand up on this one as I've done that before I found CCFan... |
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"Morfoot; He can ski. He can wakeboard.He can cook chicken.He can create his own self-named beverage, & can also apparently fly. A man of many talents."72 Mustang "Kermit",88 SN Miss Scarlett, 99 SN "Sherman"
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tjamesbo
Senior Member Joined: July-13-2008 Location: United Kingdom Status: Offline Points: 110 |
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I am worried that I may have fitted the wrong size packing . I measured the gap with na drill and 3/16 seemed loose and rattley whereas 1/4 seemed to fit . Looking at packing Posts on The 2001 forum everyone seems to be fitting a 3/16 Is it possibl;e that I have fitted a 1/4 to a 3/16 possible ???????
Course as said above I might just have overtightened were some 88/89 SN 2001's done with 1/4 packings?? just trying to do it Right !!! and get skiing before brit summer is over |
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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James,
If the 1/4" fit between the shaft and the gland without you having to hammer it in, then you have the correct size. Again, I feel you just over tightened the packing nut. It can be a delicate adjustment at times. |
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tjamesbo
Senior Member Joined: July-13-2008 Location: United Kingdom Status: Offline Points: 110 |
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Thanks
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Whitfield
Senior Member Joined: July-30-2009 Location: Central Va Status: Offline Points: 449 |
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I learned the hard way it is a very delicate proceedure. This is a skill that I have had to practice to master. 3rd time now. First time thru with the 1/4' I absolutely over tightened it ~ even just running it tight by hand. Last year I ran 1/4" all year and faced similar issues. Either too loose or too tight no good inbetween adjustment. This season I stepped down in packing size 1/4" to 3/16" and it helped. The 3/16 now gives me 2 more rings (4 total now) and a better feel on adjusmtent. My 1/4" was a very tight fit but still pressed into the packing nut by hand with some work. The 3/16" covers the gland gap just fine and fits into the nut a little easier. I did smush the 3/16" gortex packing slightly to make it just a tad wider as Pete recomended last year (when I asked). I'm an exception (Not a nautique). |
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Michael ....
I'm the black sheep ~ 1984 Dixie 299 Super Skier (350 Chev PCM / counter rotation / Velvet drive) Open Bow. |
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tjamesbo
Senior Member Joined: July-13-2008 Location: United Kingdom Status: Offline Points: 110 |
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Thanks for that I bought some more 1/4 graphite and it was better finished & went in a loteasier and we were able to hand tighten it to two and a half thread engagements with 3 coils just got it launched now so check up and run sat night to see drip rate, couldnt check when launched as there was a downpour.
will advise outcome |
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Keep us informed with the outcome. |
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tjamesbo
Senior Member Joined: July-13-2008 Location: United Kingdom Status: Offline Points: 110 |
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Drip rate quite high 50drops / minute tightened it up still dripping at quite a rate . When underway the Stuffing nut "vibrates " and moves
this makes me wonder if the propshaft is bent or out of alignment???? . It doesnt look as smooth running as it may be should be . I have tightened it up by hand as tight as my hand can move it. It doesnt appear to be dripping at all now, but as I am leaving it for a few days i am leaving it this way for now and seeing what the next session brings |
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