i bought what was described as a 55 L Arc Blast off eBay or this site, not sure. I have been trying to ascertain it’s volume by finding the history of the early Arc Blasts. I cannot find this pack. The bag when measured is 12 in wide x 4 inches deep by I’m guessing 24 in long. For the body only that is 48 sq in x 24 or 1152 cu inches. Let’s call it 1200. That is equivalent to about 20 liters for the main body. I cannot find any Blast less than 45 L. Add this 20 L to the volume of the front and side pockets (8 and 2.5 x 2) = 33 liters!! Where am I going wrong? It is the old hipbelt and shoulder straps (though I did sew on a new hb onto the old one after cutting off most of the medium hb. ZPacks say they cannot help me. Does anyone have a clue why I am not measuring a larger main body? Like at least 32 liters so when I add the 13 for the outside pockets it would come out to be a 45 liter. It appears to be only 33.
Thanks for any insights,
Steve
