Spar Fabrication ?

HAS ANYONE TRIED THIS ???​

 

How tall a rig? The weight maybe a factor?

Did you look at this?

http://hometown.aol.com/polytarp/mast.htm

I think this is the way I am going to go! A 20' tapered!

I think to be effective, it would need a "X" of the plywood?

 

I wouldn't put much trust in PVC pipe. It isn't designed to carry bending loads, and it cracks too easily.

 

Filled Pvc

I THINK YOU NEED TO DO WHAT RESEARCH I DID (VERY SCIENTIFIC)
I WORKED WITH 3' SCH 40
I WEIGH 240#'S........SUPPORTED A 10' LENGTH..........JUMPED ON IT.
IT'S STRONGER THAN THE CATAMARAN ALUM. BEAM I HAVE NOW.
THEN I JAMMED IN A 1" X3" OAK.......
THEN I SHOT IN THE FOAM IN PLACE INSULATION.....
VERY STABLE SO FAR,
ANYBODY ELSE TRY THIS ?​

 

What does a 10' with the oak inside weigh?

 

PVC has limited building attributes. Other then welding, it's very difficult to get an adhesive to stick to it very well. It doesn't hold fasteners worth a damn. It breaks down in UV. PVC doesn't accept paint well. It's brittle and not self supporting (it'll break under it's own weight). It's heavy, when made thick enough to be useful.

Gottabsomewhere has an oak pole with a PVC cover, with the PVC providing very little stiffness or strength. Yes, it'll hold you weight in a 3" sch. 40 tube, but imagine what a 3" diameter 'glass, aluminum or wooden tube can do in comparison.

PVC does make a nice cup holder in the cockpit though.