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T500 pot still review

PostPosted: Fri Apr 14, 2017 12:41 am
by Curmudgeon
I wasn't sure where to post this, but maybe here is best.

I started with a 2nd hand airstill and love it to this day, but got bored with the constant slow stripping runs. I dispute those who call it a toy still and would encourage any newbie who can grab a 2nd hand one for under £100 to do so.

I'm more into rums than vodka and decided that I can also make a good vodka on a pot still with a clean wash and a good process anyway, so I went for the T500 pot still head and T500 boiler over a full T500 (disability and limited space both meant constructing a still was not practical).

I may yet buy the copper dome for the T500 but as yet have not done so. At this time I have the T500 boiler and the bought still spirits pot still gear. It came with all the tubing and connectors initially required and I've only since bought a couple of small plumbing pieces so it attaches to a shower fitting now which suits me perfectly.

My other purchase was <£5 for a voltage controller from China via Ebay and this has paid for itself immediately as the T500 boiler is overpowered for the pot head and reducing the power means much less re-running of feints as in maybe 6 bottles of good liquor instead of 4 from a partial spirit run that follows a stripping run. This is dependent on taste but reflects how reducing power reduces smearing between heads/hearts/tails in a pot still.

Running/making cuts by temperature is a controversial subject and I suspect not having the copper dome skews my results.

My understanding is that hearts on a T500 with pot head should come out between 85 and 90 degrees (vapour temp)and my experience with rum largely backs this up, however on my still at least, with vodka hearts do not start until 87 and continue until 92 or close to it.

As such, I now know heads last to a certain phase and move to small jars when I approach it, go to larger jars containers when I know I'm into hearts and then go to a feints container well before I get to tails. Not exactly efficient but I'm rubbish at discerning tails, so prefer to make tight cuts and keep them for a feints run (I got 6 "free" bottles of booze last time I did a feints run).

I started like most folk thinking in kinda greedy terms and wanting every drop, but gradually have got to having 30+ bottles aging with really nice cuts. Some are neutral with essences and some are proper rums and cachacas. A few will even be whiskey if they last long enough.

Re: T500 pot still review

PostPosted: Fri Apr 14, 2017 7:56 am
by Brewhunter
6 bottles from a feints run?
I usually run 7/8 litres of feints watered down to 30% which probably 2/3rds fill the boiler and I come away with maybe 2ltrs at 40 % of drinkable spirit ???

Re: T500 pot still review

PostPosted: Fri Apr 14, 2017 8:10 am
by Curmudgeon
As mentioned, I have a crap nose/taste for tails, so my feints jars have a load of good alcohol in them as I stop taking "hearts" way before most people do. I probably only take 4 bottles (3 litres) of 40% from a 25 litre wash and I imagine most people take 5 or 6?

edit : also, the feints run was my first run on reduced power and I expect to get more than 3 litres from future spirit runs (from a single strip run of 25 litres). Running the T500 as a pot still on full power gave a lot of smearing.

Re: T500 pot still review

PostPosted: Fri Apr 14, 2017 8:17 am
by Brewhunter
If I run 2 x 23 ltr washes twice I will take around 8 ltrs at 40% after cuts and the rest goes in the feints (using 5kg sugar and VS in the washes) so yes maybe you leave more good stuff than me.

Re: T500 pot still review

PostPosted: Fri Apr 14, 2017 8:21 am
by Curmudgeon
As my edited reply says, I expect to match your numbers more closely now I have reduced power Brewhunter.

edit: checked my notes and there was roughly 5 litres of heads and 6 litres of "tails" which were a combined 60%ish and so were close to a full charge once diluted.

Re: T500 pot still review

PostPosted: Fri Apr 14, 2017 8:47 am
by Curmudgeon
Interesting (to me at least) is that I am re-distilling the feints again just now with some other feints (so a 4th distillation for most of it) and hearts started at 84 degrees this time and the temp has stayed rock solid at that for quite some time. The flavour is carrying across well and I am changing my mind towards making smaller cuts on each distillation rather than tight cuts on one spirit run.

Re: T500 pot still review

PostPosted: Fri Apr 14, 2017 9:15 am
by Brewhunter
Out of interest how long do your stripping runs take?

Re: T500 pot still review

PostPosted: Fri Apr 14, 2017 10:04 am
by Curmudgeon
About 90 minutes from power on viewtopic.php?f=12&t=4398

edit, maybe 2 hours with a full charge, but insanely quick

Re: T500 pot still review

PostPosted: Fri Apr 14, 2017 9:37 pm
by Easydrinker
That is very quick.

Robert.

Re: T500 pot still review

PostPosted: Sat Apr 15, 2017 6:44 am
by gaza the instructor
It may be Mr C that the copper dome slows
the flow on strip runs and spirit.
Strip runs, full charge about 3 hrs.

Re: T500 pot still review

PostPosted: Sat Apr 15, 2017 12:02 pm
by Brewhunter
gaza the instructor wrote:It may be Mr C that the copper dome slows
the flow on strip runs and spirit.
Strip runs, full charge about 3 hrs.


The dome is good but I'd miss the column more

Re: T500 pot still review

PostPosted: Sat Apr 15, 2017 2:16 pm
by gaza the instructor
Oh yes running column ATM. Tested ABV95% sir.
3x Kale wash strip thinnngies.
25ltrs @34%.
So go me approx 8.5 ltrs to extract.
hope for 5lts hearts, that will give me
about 12L.
By the way, refluxing does work if you have
not tried it. Condenses heads and ups the
ABV, never had nearly 96% before. :) :)

Re: T500 pot still review

PostPosted: Sat Apr 15, 2017 9:22 pm
by Brewhunter
Yes I know what you're saying but on a first run when I think it could be a distraction thats all 8)
I will admit that I do need to knuckle down and make more effort in that department. ;D

Re: T500 pot still review

PostPosted: Sat Apr 15, 2017 10:51 pm
by Easydrinker
Y'all know that I don't run a T500, but my very silly still is close in results, if a little slower.

Just chipping in to say that the numbers in Gaza's post above agree with my own.
Although my max is 94%, due to air cooling.

Also, the last 20 ish % of all alcohol is always left in my boiler, at around 10%, even if I fall asleep/go to bed.
Magic, this particular still of mine doesn't produce tails, the way that I run it.
Accident, not design.
Happy days :)

Robert.

Re: T500 pot still review

PostPosted: Sun Apr 16, 2017 8:13 am
by gaza the instructor
Yes as always Easydrinker you are spot on.
I know Its a reflux column on the T500.
But it never drops the ABV below 90.
When you run in pot still mode, the
quality and strength of the alcohol
falls off a cliff at 92c, which im sure
you have noticed Brewhunter.