For the small number that most DIY ttypes will need to handle, hand tools are fine. The tool to set these is available for less than $25-, and the rivets are not hard to find. The only fasteners i will consider are aluminum rivets.and I will likely go with the solid variety. If I have to do this again.and I do have a 12 foot cartop to do next spring, I would not want to imagine what salt water would do. Well, there is already significant corrosion around the screw heads.and they are above the water line, although subject to lots of spray.and this is a fresh water lake. The only DISASTER in the whole process was one corner that I cut.rather than use aluminum fasteners in one particular spot, I listened to someone's advice (well-meant I am sure) who said stainless steel screws would be fine. I own an older aluminum boat and replaced the transom last year. I do not think anyone is questioning your qualifications, but some of us have had different experiences which i do not think are any less relevent. What about galvanic considerations? and Why is setting solid rivets regarded by so many as dangerous ground? Want more details on how rivets should be sized, fit and driven?Īerospace/milspec/aviation/marine/structural business The truss head screws almost exactly match the rivets and look good. SO.simple drill, screwdriver and little open end wrench do the job AND it's still MUCH stronger. And again, most individuals with small aluminum boats do not have most of the special tools needed. The screws in most case will NEVER come loose or shear. Re-bucking I also do some times but there are still ones that are jus' sheared off or oversized holes from vibration and pounding of the hull. They will elongate eventually and do not have the same amount of support as any other rivet unless you use a matched backup washer. I use them extensively in aviation work for special purposes. Closed end pop rivets do work but they don't have the water sealing ability in the long run for "hull" usage. The only appropriate weld spots are long splits or 90' corners and should be backed up with a piece of stainless steel or copper when welded using 5356 weld filler ONLY.įor exposed nuts and screw ends use "acorn nuts". The screw not only look nice and is stronger, it matches the boat, any bafoon can fix it with a screw driver and 1/4" socket wrench with some 5200. They DO NOT improve the integrity of the hull as do the screws. Any goo or other quick fix amounts to the same thing. AND.on top of all this, it cost alot more to weld and looks like **** when done. ALSO.if you weld a rivet head, it will enlongate the shank of the rivet and the rib or bulkhead behind it will start to seperate(if not completely melt away) and a gap between the two pieces will appear which will exacerbate the cracking proccess because the sheet metal is no longer supported properly. In addition the heat will warp and buckle the hull around the welds. On an aluminum boat with thin skins or aluminum boats that are riveted, the sheet metal will eventually crack around the edge of the welds. You could literaly dissassemble your whole boat and put it back together this way with different size screw for different size rivets. should cost about 4.50, nuts 4.50, washers 2.50. USE STAINLESS STEEL TRUSS HEAD PHILLIPS screws. IMPORTANT! Remove all filings, champher all holes by hand with large 3/8" or 1/2" drill bit. Use #10-24 X 1/2" size screw and drill out rivet with 3/16" drill bit. Wipe of exterior with lacquer thinner soon as you tighten the screw. Drop of 5200 sealant around the screw head before inserting so that it squishes thru jus' a bit when ya push the screw in. TRUSS HEAD phillips screws with flat washer and nylon locking nut on the back side. The rest of the other types of repairs are hokey pokey:DO NOT WELD!(and this is coming from a weldor that fixes alum. Use Screws that match the diameter of the rivets you want to use. Twostep.this is from one of my earlier post.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |