|Written By: Marty Redmond
Lund-Larson Boats Canada Ltd.
|Originally Published in the September 1987
issue of The Outfitter Magazine.
INSERTING AND TIGHTENING RIVETS
To insert a new rivet, drill out the old one or drill an appropriate size hole (3/16 for standard rivets ¼ for oversize). Insert the rivet so it sticks through the hole about 1/8 inch. Hold a hammer or piece of steel against the head and pound the inside down until the hole is plugged.
PROCEDURE FOR TIGHTENING EXISTING RIVET IS:
Locate leaking rivet or rivets and use same procedure as in above drawing. Heavier piece of iron (or hammer) held to rounded head of rivet (or outside of boat) strike firmly with 12 to 16 oz. hammer to inside, until leak stops.
(Means approximate 2 ½” rivet spacing on bottom rails instead of normal 5”)
If you are having trouble with bottom cracking or rivets coming loose in rough usage, double riveting the bottom will help, especially in boats manufactured prior to 1981.
To double rivet simply turn the boat upside down and follow each rail. Wherever there is a space of more than four inches add another rivet. When finished, all rivets should be about 2 ½” to 3” apart or less.
Boats manufactured in late 1979-1980 and early 1981, double riveting between seat sides (under seats) are necessary, as these model years could have excessive space between rivets at this area.
It is not usually necessary to double rivet under the seats in models 1982 and newer.
PATCHING ALUMINUM BOATS
Select or cut a piece of aluminum approximately 2” larger than the hole or crack on all sides.
Remove any rivet, rib, seat side or other part within areas to be covered by patch.
Spread alumalastic caulking (Mono or Silicone) on one side of patch about 1/16” thick.
Center patch over hole with alumalastic sandwiched between boat and patch. Place patch on inside of boat.
Screw patch into place with two or three screws (10 - 12 flat head) so patch is as tight to bottom of boat as possible. NOTE: Be careful not to drill into the inside or middle of a rail!
Drill holes of previously removed rivets or parts back from outside through a patch.
Drill a row of holes around the edge of the patch, ¼” to ½” in from sideand 5/8” apart with a 3/16” bit, skipping middle of rail.
Rivet patch and parts into place. Remove screws. Drill screw holes.
Rivets can also be placed on ends of cracks and around rough edges to keep them from running or snagging.