Originally Posted By: ChicagoCraig
Carrying a very large pack when traveling at 40 to 50 mph is very challenging if the trails aren't smooth as glass. A good jolt from a bump and larger bag can bounce around potentially throw you from the machine.


I hear you. I hate to wear anything on my back when bicycling for basically the same reason. That is why I will put the weight almost anywhere else - panniers are great.

I would imagine some of these items could be carried on your body in pockets and the like. That way you can be sure you have them. If kept warm, Bics are great lighters - also light and cheap.
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