Electronic timers on grinders

On Tue, 23 Sep 2008 11:45:45 -0700, Steve <me@privacy.net> wrote:

>On Tue, 23 Sep 2008 11:01:28 -0700 (PDT), shane <shane.olson@juno.com>
>wrote:
>
>>Except when the beans get stuck in the hopper...
>>
>>I have a Virtuoso that I use at work.  It has a timer switch.  I set
>>it to the same place, always runs for the same amount of time.  When I
>>have peaberry in the hopper I get a larger volume of ground coffee
>>compared to a larger bean variety such as Kenyan.  My observation is
>>that different sizes of coffee beans grind at different rates.
>>
>>Shane
>
>So do beans of different densities.
>In fact, as the beans age/stale they will require different timer
>settings for a given volume.
>No real benefit from this modification.
>

I have both a Mini E (factory installed electronic timing) and a Super
Jolly (DIY electronic timing using homebuilt circuit).

Generally, I like both grinders much better with, than without, the
electronic timers.  But the timers are not the solution for consistent
dosing.

My SJ is at the office and has a semi-full hopper most of the time. It
is convenient to walk up to it, press the button, and get "about" the
right amount of coffee.  I leave the timing a smidge short so I can
top off the PF by briefly hitting the switch again.  I dose by volume
in this instance.

My Mini E is at home.  We use it to grind by the dose and keep
anywhere from 3 to 5 different roasted beans on hand (but no beans in
the very nice little hopper that Tex sent me).  On this grinder, I
have the timing set a little long so that all of the beans will be
ground.  It doesn't hurt anything for it to run a few extra seconds.

My observation is that fineness of the grind, followed closely by the
amount of surface oil on the beans, are the most significant factors
in screwing up an otherwise perfectly good idea (i.e. consistent doses
using a timer).

Jim
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