Author Topic: Fixing a cracked bag  (Read 1870 times)

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Offline Paul_Rowles_VA

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Fixing a cracked bag
« on: March 12, 2009, 05:28:00 pm »
OK - this is my first time, so be gentle with me!     I purchased a 2001 Connie last year (yeah! love it!). It came with a cracked left-hand bag. Previous owner dropped it whilst stationary, he sez. He had caulked the crack with some sort of silicone caulk which in short order pulled out.     The crack is on the inside, generally around the antler area, and can be pulled together and fixed with metal pop-rived strips. But I don't know what material the bag is made of and what would approximate a semi-permanent waterproofing substance.     Any help? Yes, I'm too cheap to spring $400 for a replacement, if you can't tell. Any help would be appreciated.  

Offline Rich

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Fixing a cracked bag
« Reply #1 on: March 12, 2009, 06:24:00 pm »
There are ways to repair the bags.      The only way I have personally used was to fabricate a doubler out of sheet aluminum, and mount it to the inside using a combination of mastic and pop rivets with large washers.  I've tried some commercial glues and adhesives but found if it is near a load bearing area, such as yours, it usually won't work.  The doubler spreads the load out, seals the break and keeps it from spreading.      I have also "welded" the plastic material on the fairing using scraps of plastic from a wrecked bike as a "welding rod" and an old-fashioned electric soldering iron.  Don't know if you can do that with the saddlebags.  Getting the same material to use as a sacrifical welding material would be difficult.      I am sure others will comment on this thread.  Stand by.  The Original Rich Reed  COG #7  1986 Kawasaki Ninja 1000R  1977 Yamaha XS650 Standard  2004 Little Blue Chevy  "Over the hill it's five bucks.  Here in Idaho it's a hundred and eighty."
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Offline 2fast

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Fixing a cracked bag
« Reply #2 on: March 13, 2009, 12:03:00 am »
The fairing parts are made of ABS plastic and are easily repaired with standard ABS glue found in plumbing supply departments. I know that is not your question. I think the bags are a polypropylene type of plastic. Very resistant to any glue or epoxy. They supposedly will respond to some plastic welding products, but I have not tried them. I also have repaired a cracked bag  with an aluminum  stock pop riveted to the plastic with backing washers. This should work pretty good if your part is not to far gone. You might check with Murph www.murpskits.com and see if he has a welding product too.  
Brian in Minnesota

Offline Sahagan

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Fixing a cracked bag
« Reply #3 on: March 13, 2009, 07:51:00 am »
After busting the bottom part of my left side bag, against a deer, I found, at Wal-Mart, a plastic 'welder' glue. The impact had actually separated the plastic of the bag from the aluminum frame, so it was a mess. The repair isn't pretty (but no one can see it anyway) and it's held just fine now for going on five years. Cheap, not hard to apply, and works for at least five years. What's not to like?    Sahagan  

Offline Ken_Ford_FL

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Fixing a cracked bag
« Reply #4 on: March 13, 2009, 11:35:00 am »
Go to www.plastex.home.att.net, their repair kits work on all types of plastic.  Also since all the other plastic on a C10 is ABS the bags may be as well.  ABS glue works very well.  
Ken Ford
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Offline Rich

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Fixing a cracked bag
« Reply #5 on: March 13, 2009, 01:26:00 pm »
I've come to the conclusion the bags are indeed made from something other than the familiar ABS the fairing, tail piece and side covers are made from.  Probably some sort if distillate of Saskatchewan Mink Oil or some such exotic material.  However, as with any plastic, it has a melting point and as long as you have enough material it can be welded.      Then again, I CAN win the next Dakkar rally and be named Sexiest Man Alive ahead of Brad Pitt et al, but...    So Paul, your original "pop-rivet and strips" idea is indeed a practiced method of repair.  Any worries of water-proofing can be addressed with a glob of mastic or RTV.  But if you feel adventurous, welding seems to be a great way to go.    Whatever you decide, any chance you could take a few digital photos and write up your experience and results to share with your fellow COGers?  We'd appreciate it.  The Original Rich Reed  COG #7  1986 Kawasaki Ninja 1000R  1977 Yamaha XS650 Standard  2004 Little Blue Chevy  "Over the hill it's five bucks.  Here in Idaho it's a hundred and eighty."
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Offline goatmar

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Fixing a cracked bag
« Reply #6 on: March 13, 2009, 04:03:00 pm »
Plastex will do the trick it sticks to everything........ small kit in black should work for you.    Plastex    Dave Muzzey  St. Charles, IL  COG#7957  '01 Connie    
« Last Edit: March 13, 2009, 07:04:00 pm by goatmar »
Dave Muzzey  St. Charles, IL  COG#7957  '01 Connie  100K miles and counting

Offline Paul_Rowles_VA

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Fixing a cracked bag
« Reply #7 on: March 23, 2009, 04:38:00 pm »
OK, thanks for the help, everyone. I've ordered the Plastex (not to be confused with plastique, which is what I'd like to use on my boat). As soon as it's in, I'll attempt the fix and let y'all know.  

Offline Brett0769

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Fixing a cracked bag
« Reply #8 on: March 23, 2009, 05:05:00 pm »
They say the two happiest days you'll spend with your boat are the day you buy it and the day you sell it.  
'06 C10  Brett Hatfield  AMA# 1019197  COG# 8229 (CDA# 0267)    <a href="http://www.flickr.com/photos/brett0769/2793453582/" title="Trip Home by Brett0769, on Flickr"><img src="http://farm4.static.flickr.com/3223/2793453582_bba89ca959_t.jpg" width="100" height="75" alt="Trip Home" />[/url]

Offline S Smith

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Fixing a cracked bag
« Reply #9 on: March 23, 2009, 06:15:00 pm »
The bags are polypropylene. Adhesive epoxies and other chemical plastic weld stuff may hold for a bit, but if you want it to last, keep the bags all plastic, then look into true plastic welding.  Polyprop welds don't look pretty, and they CAN NOT sanded and refinished like ABS body panels. If you can live with Frankenstien type "scars" then this is the way to go. There is a cycle salvage shop that has a pro welder on staff, and it takes a pro with the proper plastic rods to weld polyprop.  (much harder to weld than ABS)  I had a bag welded a few years ago and it is holding up well.    --  Steve Smith, COG #3184  COG Northeast Area Director  (somewhere in south central CT)     If you're not living on the edge, you're taking up too much space.
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