03-08-2010, 03:41 PM
I thought you weren't concerned about "speed", rather than "effort" needed to drill the hole. I have an 8" manual Mora and as long as its sharp it cuts great. I guess if you think about it, if you have an 8" and a 5" and you are rotating them at the same speed and they are the same degree of sharpness, then they should "tie" in a since they are cutting through the same thickness of ice. One is just cutting a larger hole. If you have the muscle to use an 8" then go for it. If I was to go with a power auger, why not go the largest possible? You're not going to save any significant weight with a smaller power auger.
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