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Re: 2" Boka development.

PostPosted: Tue Mar 31, 2015 11:18 am
by Urrazeb
I'll give one thing away though... These are a very good looking unit :-B :teasing-neener: :D

Re: 2" Boka development.

PostPosted: Tue Apr 07, 2015 11:00 pm
by Fishboy
And? :whistle:

Re: 2" Boka development.

PostPosted: Wed Apr 08, 2015 3:59 pm
by MacStill
Fishboy wrote:And? :whistle:


:text-+1:

Re: 2" Boka development.

PostPosted: Wed Apr 08, 2015 11:14 pm
by Fishboy
awwwwww CMON.....
This is worse than waiting for Christmas.....

Re: 2" Boka development.

PostPosted: Thu Apr 09, 2015 5:06 pm
by 1 2many
SOON :teasing-neener:

Re: 2" Boka development.

PostPosted: Thu Apr 16, 2015 12:03 pm
by Fishboy
Whooooosssssshhhhh

Re: 2" Boka development.

PostPosted: Thu Apr 16, 2015 12:12 pm
by Zak Griffin
Nearly 3 weeks and no word... Zeb's done a runner?

Re: 2" Boka development.

PostPosted: Thu Apr 16, 2015 1:32 pm
by LBextreme
Zak Griffin wrote:Nearly 3 weeks and no word... Zeb's done a runner?

I think he put too much wash in the boiler and it's taking time.

Re: 2" Boka development.

PostPosted: Thu Apr 16, 2015 2:01 pm
by bayshine
Maybe he's run off and married it :laughing-rolling:

Re: 2" Boka development.

PostPosted: Fri Apr 17, 2015 1:21 pm
by MacStill
I'll chase this up over the weekend, apologies for this dragging out for so long :oops:

Re: 2" Boka development.

PostPosted: Sun Apr 26, 2015 9:06 pm
by Urrazeb
Hey fellas, apologies for the delay.

If anyone in Perth has a controller I could borrow for a few hours I'll make it worth your while :pray:

Re: 2" Boka development.

PostPosted: Mon Apr 27, 2015 10:20 pm
by Swisswa
Hi guys,

I bought one of these boka heads off Mac last week and have given it a few runs in the Turbo 500 boiler and can say it runs beautifully. With a 600mm packing column full of stainless scourers and some copper saddles I consistently pulled off 93% ABV from a WBAB wash with the reflux condenser more than capable of knocking the vapours down.

A second run with some 30% hearts in the boiler (just to test) performed just as well with no vapour loss through the condenser.

Cheers.

Re: 2" Boka development.

PostPosted: Tue Apr 28, 2015 10:09 am
by Fishboy
Hi SwissWa,
What did you pay for it?

Re: 2" Boka development.

PostPosted: Tue Apr 28, 2015 10:30 am
by MacStill
Fishboy wrote:Hi SwissWa,
What did you pay for it?


Send me an email mate, we'll work out a special price for you seeing you've been so patient

allan@5stardistilling.com.au :handgestures-thumbupleft:

Re: 2" Boka development.

PostPosted: Tue Apr 28, 2015 10:41 am
by Linno
Urrazeb wrote:Hey fellas, apologies for the delay.

If anyone in Perth has a controller I could borrow for a few hours I'll make it worth your while :pray:


gday Urrazeb

I have a controller that is collecting dust atm you are welcome to grab it mate send me a pm.

Linno

Re: 2" Boka development.

PostPosted: Tue Apr 28, 2015 10:53 am
by Urrazeb
Thanks Linno, PM sent :handgestures-thumbupleft:

Re: 2" Boka development.

PostPosted: Wed Apr 29, 2015 12:18 am
by Andy
MacStill wrote:
Fishboy wrote:Hi SwissWa,
What did you pay for it?


Send me an email mate, we'll work out a special price for you seeing you've been so patient

allan@5stardistilling.com.au :handgestures-thumbupleft:


(*) (*) (*) (*) (*) now that's customer service

Re: 2" Boka development.

PostPosted: Wed Apr 29, 2015 10:03 am
by TheMechwarrior
When will these be available in the 5 Star Store Mac?

I get asked about Boka builds all the time, it would be nice to simply direct people to the store :)

Cheers,

Mech.

Re: 2" Boka development.

PostPosted: Wed Apr 29, 2015 10:21 am
by MacStill
Should be within a few days now mate, just been getting feedback on the test units and all seems good with them.... I didnt want to release them until they were proven to perform as I wanted them to :handgestures-thumbupleft:

Re: 2" Boka development.

PostPosted: Sat May 02, 2015 10:22 am
by Urrazeb
OK, the results are in.

Firstly let me apologise to everyone who has been waiting for this post. I had some unrelated issues that took priority and had some time to run her up last night so here are the juicy run specs;

18°C Boiler charge of 35% wheat vodka low wines
18°C Cooling water temp - 1000lt
20°C Ambient, in shed, no breeze
2 x 2400W elements, one through controller for operation, 1 off

I'll leave out boil up time, fores etc etc and assume this information to be irrelevant

Boka specs - 0.9m copper packing
Shot glass on the vent to monitor overpowering
rig.jpg



7000 LPH pump to 4 way manifold - one relief open, 2.5m head, approximately 2000 LPH makes it to the condenser

At 1.5 LPH take off the rig was pulling 94% @ 23°C = 93.4% actual with the voltage controller on 125
SweetSpot.jpg


At 0.5 LPH the rig was pulling 95% ABV @ 20°C = 95% actual with controller at 140
maxpower.jpg


With 1200mm of packing this rig could pull aezotrope at 1.0 LPH at a touch over 125 on the controller, it is a very capable rig and when ran right very little adjustments are needed for a consistent run.

I overpowered the rig to see how much it could handle but it didn't like going much over 150V.

All in all it was a good run and the rig had no issues, for someone wanting a rig to make neutral these are a perfect to get you going :handgestures-thumbupleft:

If I get some time I will add another 500mm packed section and see what she can pull at 1400mm packing