Badly pitted Grumman canoe!!
Badly pitted Grumman canoe!!
SO like a dummy, I bought a vintage Grumman canoe without giving it a thorough inspection. I got carried away with the brand—. It looked straight, no dings, little use and some built up dirt on one side. I left a auction bid and I won—. After a good scrubbing, I come to find some pretty deep pitting on one side approx 12” by 24” section where apparently the canoe rested on it’s side on concrete. A strong hose actually reveled 2 pencil size holes. I know I should just scrap it but I want to bring it back from the brink. Using a stainless wire brush, I removed all the loose stuff oxidation [img]and now have to decide how to properly clean and what to use to fill the craters. If it was a car, I would use bondo. I considered the new low temp aluminum welding rods but using map gas might warp the aluminum or swell the rivets that are in the area. JBweld marine, alum bond, 3M5200—-skim Coat?
- Attachments
-
- 02983946-A883-4701-BEF4-0397E3789DD2.jpeg (172.5 KiB) Viewed 7178 times
-
- Donator 08, 09, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
- Posts: 1752
- Joined: Mon Aug 18, 2008 1:37 am
- 15
- Your location: Kenai, AK
- Location: Kenai, Alaska
Re: Badly pitted Grumman canoe!!
Welcome to the AAB.com Forum, sorry its in these circumstances.
As you might see from the posts and pics? the main boat here is plate so likely a bit thicker and of 5000 series aluminum? Not sure what alloy is used by the stretch formed, pressed boats like a canoe, but is pretty clear the aluminum corrodes in a similar manner?
A bit thin to weld, more or less our typical remedy/repair/restoration methods for plate welded boats. Looks like that entire area will have thinned and already light panel?
I don't have any experience with canoes' hull repair- except helping to tighten some rivets in the keel/centerline of another old canoe. Whatever you decide to do? probably tests patches for adhesion to the metal before 'going for it' over the whole area?
I wonder if a bed liner type of pour on/roll on semi-hardening adhesive film might be the answer? At this point, where your canoe becomes a planter, it might not hurt to try? Maybe put a rivet into the holes? tighten them up with a 5200 type sealant? then apply the bed liner type of material over an acid etched surface- might try to get some primer/allodyne conversion film to stick?
Good luck, wish I knew more about the canoe's alloy and repair work on that type of boat.
Cheers,
Kevin Morin
Kenai, AK
As you might see from the posts and pics? the main boat here is plate so likely a bit thicker and of 5000 series aluminum? Not sure what alloy is used by the stretch formed, pressed boats like a canoe, but is pretty clear the aluminum corrodes in a similar manner?
A bit thin to weld, more or less our typical remedy/repair/restoration methods for plate welded boats. Looks like that entire area will have thinned and already light panel?
I don't have any experience with canoes' hull repair- except helping to tighten some rivets in the keel/centerline of another old canoe. Whatever you decide to do? probably tests patches for adhesion to the metal before 'going for it' over the whole area?
I wonder if a bed liner type of pour on/roll on semi-hardening adhesive film might be the answer? At this point, where your canoe becomes a planter, it might not hurt to try? Maybe put a rivet into the holes? tighten them up with a 5200 type sealant? then apply the bed liner type of material over an acid etched surface- might try to get some primer/allodyne conversion film to stick?
Good luck, wish I knew more about the canoe's alloy and repair work on that type of boat.
Cheers,
Kevin Morin
Kenai, AK
kmorin