by destorman on Sat Sep 06, 2014 7:38 am
G'day crew ... as always the newtriton guru's have a wealth of knowledge shared for all. Just read this thread as we have a little, ah "project" we are in concept stages of ... more about that later.
Question for the guru's, and anyone else who would like to add their $0.02 ...
How much "down weight" would you think your DIY draw systems would handle?
The weight of the aluminium tube is appealing, we need to minimise weight of the draws for use in the "load" which is the other part of this project. But, we are unsure how much down weight they would cope with? Obviously additional vertical supports can be added, but, that weak spot could be the joiners? In the end, it's the load weight, lets say 500kg to 750kg max, spread across the whole area (think, a big box, flat base, evenly spread weight). Would the ally vertical supports and joiners cope with this type of load? What's your thoughts on down weight? How many stringers and how far apart? How far to space out the vertical supports?
Alternate is the plywood, say 12mm marine grade, but with the "stringers" run at full depth rather than cut outs like Robby has in his build. Again, what's your thoughts on down weight and how many "stringers"? How far apart if using say 12mm ply as base and top?
FWIW, the rough plan ATM is a set of three draws (i.e. so an additional stringer) in the back section, it's around 900mm deep to the wheel arches, and 1300 across the tail gate opening. Between the wheel arches, we are planning a set of 4 "boxes" with removable lids. We're also thinking to have a 12mm ply "base" so as to help spread the load. Probably 12mm for the top of the draw box too, for same reason. Frame, out of ally tube, 25x25x1.6 and using the ezyjoiners / qubelok system.
How would you build it so as to take a down weight of say 500kg, max 750kg?
The best surfer is the one having the most fun ...