29" thick slicks with 700c inner tubes???
 

So i'm looking into buying some 29 inch thickslick tires and am currently running a 700c WTB RESOLUTE tire so, my question is if any one knows if my 700x42c inner tubes work for the 29in thickslicks?(also i'm on a 700c rimset) this is for a CHARGE MORTAR FGFS

In a pinch, they would expand enough to work. I'd probably get bigger tubes to match, though.

Are you sure your inner tubes are 700x42? If they are then I can't see why they wouldn't work with your ThickSlicks (assuming you have the ~2.0" width ThickSlicks). (BTW 29" and 700c are the same diameter)