Originally Posted by rafterman
I actually like the frame when it is on my round boat, though knowing what I know now I could build a nice one for less $ and it would probably be lighter. However, those same retro fitted parts would not work for the cat like the NRS ones do. I'm totally fine with having them replace parts that end up breaking for no good reason for now. My ultimate goal is to have two cats and I will be using a minimalist NRS frame for one of the boats as I probably won't buy two madcatr frames...
I'm wondering how much weight/money could be saved on the round boat by using galvanized toprail and speedrail fittings, with alum. siderails to they don't get crushed by u bolts and set screws.
Probably none going to steel http://images.discountsteel.com/file..._Schedules.pdf
I think the .065 is pretty thin wall stuff and you don't want your frame to crinkle If a piece of pipe has to span 5'
You'd probably save half pound per speedrail but you lose easy ability to move stuff around without leaving divots. I only use speedrail where it can't move (like crossbars that connect to drop rails
Don't be so hard on your NRS gear. It's purpose is definitely more flexibilty at expense of weight. But it does fulfill a need or niche. They have no idea whether you plan on running 2000 or 200 lbs down the river
The reason welded frames are so light is there are no fittings and the frame can be gusseted, have shorter spans, and configured using the drops to add strength and stability.
The ultralight ones are probably not as capable of handling 200 lb coolers etc in addition to several users - they can be, but then the weight would also creep up