Search found 1734 matches

by kmorin
Mon Mar 18, 2024 5:05 pm
Forum: Hauling Your Alloy Rig
Topic: Crack in aluminum I beam Trailer - Fixable?
Replies: 3
Views: 180

Re: Crack in aluminum I beam Trailer - Fixable?

Tin Cup, I'd say the aluminum trailer beam is repairable by welding but would ask if the beam/frame is adequate for the boat?  If the axle was too light for the boat, and axles notoriously match trailers in mfg.'d products' wt ratings ......  could be more wt. than the beam has the strength to bear?...
by kmorin
Sat Mar 09, 2024 9:59 pm
Forum: Alloy Boat Forum
Topic: welded vs riveted?
Replies: 1
Views: 104

Re: welded vs riveted?

slug, as a long term welded hull designer, builder, welder, user, and having repaired both welded and riveted hulls I'd make a few remarks. Basically we're not talking apples to apples, these are my thoughts. The video has some good points in regard both methods of building but....  The Dialog is ve...
by kmorin
Fri Mar 08, 2024 11:45 pm
Forum: Alloy Shop Talk
Topic: Conchfish AL 17.6T build
Replies: 57
Views: 11348

Re: Conchfish AL 17.6T build

Carl, the bend looks pretty uniform but.... I'd do some 1/2" or 5/8" layout lines to insure your end product is 'fair' smooth w no kinks or angle points. Kick or kink bending is usually done with a set of lines to make sure the pressure is applied evenly - and depth of cylinder is the seco...
by kmorin
Sun Mar 03, 2024 10:04 pm
Forum: Alloy Shop Talk
Topic: Conchfish AL 17.6T build
Replies: 57
Views: 11348

Re: Conchfish AL 17.6T build

Carl, Looks like the 0.030" wire is good for any outside corners as shown by that first weld.  Good shape, size and travel speed and good fusion toe & top.  However, inside fillets look like they'll need larger dia. wire?  Need more heat while keeping tighter arc length and still fusing bot...
by kmorin
Sun Mar 03, 2024 3:36 pm
Forum: Alloy Boat Forum
Topic: Is this hull too far gone?
Replies: 2
Views: 287

Re: Is this hull too far gone?

Peterwd, Yes, I'd say the boat was too far gone to bother repairing - unless you remove the entire bottom and re-plate?  The reason for my pessimism is the uniformity of the corrosion- as though the boat's electrical system was delivering stray current to the hull or the bottom paint was copper base...
by kmorin
Fri Mar 01, 2024 6:57 pm
Forum: Alloy Shop Talk
Topic: Conchfish AL 17.6T build
Replies: 57
Views: 11348

Re: Conchfish AL 17.6T build

Carl, Yes, the keel line/weld seam will need support too, but not as badly as the mid bottom panel seam does due to the increased angle between the bottom panels.  The two bottom panels are closer to 'self supporting' at steeper angles than when they're nearly flat to one another. So the main center...
by kmorin
Fri Mar 01, 2024 1:44 am
Forum: Alloy Shop Talk
Topic: Conchfish AL 17.6T build
Replies: 57
Views: 11348

Re: Conchfish AL 17.6T build

Carl, I'll be OK, I think?  Seems like all I do is sleep! Regarding flat bar- I would want it to bend to the shape smoothly and notching the bar- will not make that happen- it will kink at the notches. The purpose of the Type 2 bar is permanent- Type 1 was in segments to remove after the seam was we...
by kmorin
Thu Feb 29, 2024 8:06 pm
Forum: Alloy Shop Talk
Topic: Conchfish AL 17.6T build
Replies: 57
Views: 11348

Re: Conchfish AL 17.6T build

Carl, What does this system look like using 0.035" wire?  The welds shown have excessive over spray- tiny droplets on the material surrounding the weld bead...that condition usually indicates the weld arc length is too long- so I'd want to increase the wire feed speed and shorten the arc length...
by kmorin
Thu Feb 29, 2024 4:24 am
Forum: Alloy Shop Talk
Topic: Conchfish AL 17.6T build
Replies: 57
Views: 11348

Re: Conchfish AL 17.6T build

Carl, If you turn the hull before welding the outer seams (?) will the building form go over too? If not (?) then I do understand some risk to deformity- but decent tacks shouldn't come undone?? It would be fine to weld the bow stem/keel seam from sheer to the aft end of the forefoot (keel seam) and...
by kmorin
Thu Feb 29, 2024 2:09 am
Forum: Alloy Shop Talk
Topic: Conchfish AL 17.6T build
Replies: 57
Views: 11348

Re: Conchfish AL 17.6T build

Carl, No need to show print stamp on chine flat once you show it's a tacked up pair of bars-plates-sheet outlines & NOT an extrusion! (I) Hate those T-joint fillets instead of outside corner joints where inside edges meet and form a natural full depth edge groove for a weld- but you have what yo...
by kmorin
Wed Feb 28, 2024 1:19 am
Forum: Alloy Shop Talk
Topic: Conchfish AL 17.6T build
Replies: 57
Views: 11348

Re: Conchfish AL 17.6T build

Carl, first the chine flat made of an extrusion??  I see the bar showing that flat has rocker and so it may rise as a buttock line forward from the transom, can't tell w/o the lines plan.  BUTTT.... you refer to it as 5086- so the angle extrusion is 5086 or there is a chine flat plate and a vertical...
by kmorin
Tue Feb 27, 2024 1:49 am
Forum: Alloy Shop Talk
Topic: Conchfish AL 17.6T build
Replies: 57
Views: 11348

Re: Conchfish AL 17.6T build

Carl, this set of images shows a major (problem) question I have of the lines plan and plate development of the bottom.  Image # 1 shows the panels all aligned next to one another and that confirms the two panel design is not likely needed?  Image #2 shows a VERY small shape separation at the bow- t...
by kmorin
Mon Feb 26, 2024 12:48 am
Forum: Alloy Shop Talk
Topic: Conchfish AL 17.6T build
Replies: 57
Views: 11348

Re: Conchfish AL 17.6T build

m32, The two panels I'd like to see in the photo are not the two center, inboard bottom panels adjacent the keel as shown . They are the panel to the left in the photo and the panel to the left of the paired center-line panels.  However the alignment is correct-tight together, aft where they're stra...
by kmorin
Sun Feb 25, 2024 1:25 pm
Forum: Alloy Shop Talk
Topic: Conchfish AL 17.6T build
Replies: 57
Views: 11348

Re: Conchfish AL 17.6T build

m32', Just discussing the seam in the twin bottom panels: that seam, if I'm correct (?), is unsupported and is visually very nearly 'flat' one sheet edge to another?  Pls confirm this as all the other seams in the hull shown are of a very different class of weld joint. To my eye- that seam in the bo...
by kmorin
Sun Feb 25, 2024 4:45 am
Forum: Alloy Shop Talk
Topic: Conchfish AL 17.6T build
Replies: 57
Views: 11348

Re: Conchfish AL 17.6T build

m32, have you welded a skiff before?  Just chking to see how detailed to try and explain my point of view re; skiff assembly. Also, just re-read the thread and would like to know if the hull bottom panel seams have longitudinals inside at or near the seam?  I'm referring to the seam in the bottom pa...
by kmorin
Sat Feb 17, 2024 12:54 am
Forum: Alloy Shop Talk
Topic: Stupid Question...
Replies: 12
Views: 17823

Re: Stupid Question...

Forum, I realize the dimension or scantling being discussed in the OP is what was being discussed but I've decided to add some to this topic.  I always thought the only stupid question was one that wasn't asked??  But I'm going to move sideways on the OP since this is so old. This older thread, bump...
by kmorin
Tue Jan 23, 2024 3:09 pm
Forum: Alloy Boat Forum
Topic: Labor Hours
Replies: 8
Views: 2519

Re: Labor Hours

starbright,  Welcome to the AAB.com Forum, as welder has mentioned, build sequence image posts are always widely read here, hope you'll share yours? My primary problem with trying to realistically predict the man-hours to complete a little pre-cut skiff-kit is the “unknowable” differences between fi...
by kmorin
Wed Nov 29, 2023 3:35 pm
Forum: Alloy Boat Forum
Topic: Chasing corrosion around fittings
Replies: 2
Views: 1917

Re: Chasing corrosion around fittings

Ethan, the pictures seem to indicate your builder's paint job didn't include an etch and chromic acid conversion of the surface to chromium oxide- accomplished with chemicals like Allodyne on wet rinsed acid etched 5000 and 6000 series aluminum?  The mill scale seems intact in the images, but the co...
by kmorin
Wed Nov 15, 2023 4:37 pm
Forum: Alloy Boat Forum
Topic: Advise
Replies: 1
Views: 3218

Re: Advise

roamer58,
5052 will weld to 5086 with 5356 alloy fillers and will work to patch holes, corrosion areas or other defects in the original hull.

Cheers,
Kevin Morin
Kenai, AK
by kmorin
Thu Sep 14, 2023 5:01 pm
Forum: Share your Projects and Creations
Topic: ID old gulf coast boat and ideas on refurb
Replies: 3
Views: 3331

Re: ID old gulf coast boat and ideas on refurb

Hey Justin, welcome to the AAB.com Forum.
The links don't open for me? and I don't see images in the text? In fact, on my display I see the Image string printed out.
May want to edit the post to see if the image attachment feature is OK maybe its just my old PC?

Cheers,
Kevin Morin
Kenai, AK
by kmorin
Fri Sep 08, 2023 8:13 pm
Forum: Alloy Shop Talk
Topic: Conchfish AL 17.6T build
Replies: 57
Views: 11348

Re: Conchfish AL 17.6T build

m32, If you rivet or bolt the deck to the topsides at the shear (?) you'd have to have some flange or guard deck/shear clamp to rivet or bolt too - if I understand the question?  That piece would be welded to the topsides along the shear- so why not skip that pc (shear clamp/rivet flange) and just w...
by kmorin
Sat Jul 08, 2023 5:19 pm
Forum: Welcome New Members
Topic: new to the forum
Replies: 2
Views: 3157

Re: new to the forum

Mark, congratulations on getting close to retirement and we're glad you're considering building your own welded aluminum boat, welcome to the AAB.com Forum. I can't speak to a "good size for the Great Lakes", but 20 to 26' LOA have proven to very successful boats in many different waters. ...
by kmorin
Thu May 25, 2023 1:17 pm
Forum: Alloy Shop Talk
Topic: Crack inside transom
Replies: 15
Views: 5632

Re: Crack inside transom

Hard_Way, First the transom bolt doubler 'pan'.  It appears this is a bent piece of sheet and the bends look like they were done with a knife edge brake die?  This resulted in a weakened piece of metal due to the strain hardening of the bend areas; by not using the correct (4T Radius Upper Nose Bar ...
by kmorin
Wed May 24, 2023 1:40 pm
Forum: Alloy Shop Talk
Topic: Crack inside transom
Replies: 15
Views: 5632

Re: Crack inside transom

Hard_Way, To directly answer your question about the inner transom plate; yes you should open up the void to see what's inside.  If the inner plate is the liner to a void that was created as a 'sandwich' or double sided built up 'box'(?) then it may not have been stiff enough internally? The bolt he...
by kmorin
Mon Mar 27, 2023 6:38 pm
Forum: Alloy Boat Forum
Topic: Pacific boat sides.
Replies: 5
Views: 5259

Re: Pacific boat sides.

In the 70's, of the last century, I used to work on a group of welded 32'ers that were built in Vancouver and Sea/Puget Sound for a fish packer in the Kenai River.  I'm not sure if the alloy's used were defective or not? Nut I've only seen this type of corrosion in those boats.  The boats were all b...