Hot tip for those who patch: draw a directional arrow on your tube with a Sharpie. When you pull the tube out to patch it, you can more easily find the offending thorn or glass in the tire, because you’ll know which way the tube was oriented when the flat occurred.
OP: On my bikes with tubes I carry one spare tube, an old-school patch kit, two CO2 cartridges, and a mini pump. I’ve fixed multiple flats on a ride by patching when I can and replacing the tube if I can’t patch it. I use the CO2 cans first and save the pump as a last resort.
To find the hole, put some air in the tube with the pump and hold the tube under your nose or against your ear; as you rotate the tube, you’ll feel and hear the air escaping.
Last edited by Rolla; 08-21-22 at 02:23 PM.