by Peppersass on Wed Sep 19, 2012 12:12 pm
I find Tom's initial results very interesting, because they suggest that grinder speed affects fines production. This isn't something you can necessarily compensate for by changing the grind setting or loading the hopper differently, which in turn suggests that grinder speed may be very important -- at least for conical grinders.
My recollection is that there has been a bit of discussion on this board about the effects of grinder motor speed. While I don't believe that rigorous tests have been conducted, the posts I've read tend hold that lower grinder speeds are better. Two of the top-rated Titan conicals, the Robur and K10, run at relatively low speeds. Without spending a lot of time (that I don't have right now) to search and read those threads, I can't say whether the benefit is supposed to be in flavor, consistency or both. But if the percentage of fines is partly a product of grinder speed, we have something that needs further investigation.
As for the trade-off in preparation time between motorized and hand-operated grinders, my calculations show that hand-grinding with an HG One wouldn't take materially longer than the current bump/grind/sweep/clean routine I go through when single-dosing with my K10. The advantage would be even less retention and a much quicker cleanup (the part of my routine I like the least.) IMHO, once the HG One is fully optimized, the difference for those who single dose will simply be in the muscle effort required.
Dick Green