« on: May 07, 2013, 04:01:44 PM »
If measurements over 100f are worthless, how do you get a valid gravity pre boil?
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I use this adjustable return tube from Brew Hardware. Food grade and safe up to 170 F.
The ideal speed for a mill is 400rpm. You would need to make a design change to allow for more rpm at the motor. This would likely involve a larger drive pulley at the motor side. Again, you'll need to calculate the size pulley needed to drive the mill at approx. 400 rpm.I have a Valley Mill and the sticker on the side states MAX SPEED 300 RPM. Last time I was using it with my cordless drill the battery ran out on the last few pounds and I had to attach the hand crank. I wound up with a bit of sweat on the browe and had to swap hands but when it was all said and done it had a therapeutic feel to it. It was as off I had put more of myself into the brew days effort. I may opt for that next time but make sure the drill battery is charged, in case.