SG9090 Fourstars description of what a good crush may look like is a good one. When discussing preferred grain mill gap, not much is said about mill speed or roller speed which I feel has a great influence on the quality of your crush after selecting a gap setting your happy with.
I had experience with this as a friend of mine Budwiser built me a beautiful 4 inch mill. And after hours of fine adjustments to the gap the only marked improvement on the crush was a slower roller seed, a reduction of roller surface speed from 813 millimetres per second down to 480 millimetres per second had an astonishing result on the quality of the crush, so much so I could hardly believe the difference.
Sorry for the ramble guys but I feel this is the simplest single improvement I have made to my system.
Cheers.gregs.
I have recently put a motor on my MM2, changing the roller surface speed from 596mm per sec (at 300rpm) down to 318mm per sec (160rpm).
Hi QldKev,
I also have a MM-2 and would like to motorise it. What motor did you use and what gear ratio did you use? The old power drill I'm using is pretty hard to judge what speed it's actually rotating at, especially when it's rocking around on a bucket. Definitely keen to bench mount and motorise my mill.
Cheers
I went the 'AndrewQld' setup
peakydh said:Cheers for the info, I've had a look around at different motors, set-ups etc and this looks like the best value for money, easiest to set up, and great for getting the roller speed right.
One motorised MM-2 coming right up! :super:
im currently milling at 1.1mm but thinking of opening that to 1.3-1.4mm as im getting alot more flour than what i would like and consequently a slower inconsistent sparge. The joys of milling with a drill i suppose.
for those milling with a drill.
I opened my gap to 1.2mm today, (it was actually .9 earlier, not the standard 1.1mm aqs it should be)...
... I'll report the efficiency once my brewday is done and see how she fairs. i usually hit around 68-73% dependant on grist+-adjuncts. all i can say is I'm happy. :beerbang:
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