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Homeroasters - Home Roasting Coffee Community » GRINDERS » GRINDERS

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Page 2 of 2: 12

Grinder black hole??
allenb	#26 Posted on 12/22/2022 10:24 AM
Administrator Posts: 3649 Joined: February 23, 2010	My assumption is that these starting current values in the chart are for regular induction motors. Brushed DC and permanent magnet motors do not have that kind of current inrush. 1/2 lb and 1 lb drum, Siemens Sirocco fluidbed, presspot, chemex, cajun biggin brewer from the backwoods of Louisiana


CK	#27 Posted on 12/22/2022 5:09 PM
1/2 Pounder Posts: 231 Joined: December 07, 2018	The chart mentioned for post #24 is attached here. CK attached the following image: Technivorm Moccamaster, French Press, Aeropress GO, Ibrik, Moka pot, Breville Barista Express, Urbanic070s/static-free with zero retention mods, Breville SGP, Roaster908


renatoa	#28 Posted on 12/23/2022 1:20 AM
Administrator Posts: 2497 Joined: September 30, 2016	This table is a pure math HP=Watts conversion, based on 750W/HP ratio. More exactly should be 745.7 Has nothing to do with real motors currents, which depends of load.


CK	#29 Posted on 02/17/2023 7:18 PM
1/2 Pounder Posts: 231 Joined: December 07, 2018	Here's the modified Urbanic grinder as it is today... has been working well with the updated mods. No more static or retention problems on this build, and the small bellows is just right for a final blowout. CK attached the following image: Technivorm Moccamaster, French Press, Aeropress GO, Ibrik, Moka pot, Breville Barista Express, Urbanic070s/static-free with zero retention mods, Breville SGP, Roaster908


allenb	#30 Posted on 02/18/2023 9:42 AM
Administrator Posts: 3649 Joined: February 23, 2010	Looks like your hard work and engineering skills paid off! This looks to be one that the main stream grinder makers will need to use as a model for a benchmark to try and beat. 1/2 lb and 1 lb drum, Siemens Sirocco fluidbed, presspot, chemex, cajun biggin brewer from the backwoods of Louisiana


CK	#31 Posted on 02/19/2023 10:02 AM
1/2 Pounder Posts: 231 Joined: December 07, 2018	In case someone wants to make something similar, or play around with brushed DC motors, here is the video/channel I learned from. Everything you could want to know on how to use an SCR controller for speed control... correctly. Technivorm Moccamaster, French Press, Aeropress GO, Ibrik, Moka pot, Breville Barista Express, Urbanic070s/static-free with zero retention mods, Breville SGP, Roaster908

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