My new KKTO - learning to use it!

[WSullivan]

Re: My new KKTO - learning to use it!

Ok done the silicone, didnt get a chance to run a roast as the silicone took some time to dry, my lovely mother in law is sewing up the insul brite into 3 layers to wrap around the outer pot, so ill let you know........need to think about the agitator once again...... :

[WSullivan]

Re: My new KKTO - learning to use it!

Righto, silicone = pain in the a**, suggest commercial grade silastic "MAY" do the job, however with the fumes.....maybe not, it melted to goo at around 120C, out came the turps, then the soapy water, so back to square......well 1.5, havent sewn up the insulation for the outer pot yet......will do that and report back with results......hopefully tonight

cheers
warren

[Koffee_Kosmo]

Re: My new KKTO - learning to use it!

Righto, silicone = pain in the a**, suggest commercial grade silastic "MAY" do the job, however with the fumes.....maybe not, it melted to goo at around 120C, out came the turps, then the soapy water, so back to square......well 1.5, havent sewn up the insulation for the outer pot yet......will do that and report back with results......hopefully tonight

cheers
warren

I use Permatex High-Temp RTV Silicone Gasket Maker - Red, 85G
I also used it to stick the gas oven door glass back on when it broke



KK

[WSullivan]

Re: My new KKTO - learning to use it!

Cool KK, thanks, ok i have applied the insul bright to the outer pot, 3 layers sewn up by my lovely mother in law wrapped around and held on temp with some stretchy cord, below are a couple of profiles,

First is 600gm INDO i did the other night, inner insulation only from KK, 15 min to first crack, another 5 or so to SC, beans were dropped in at 150C.

The second is tonight, 600gm INDO with inner and outer insulation, however, i tried a different approach, beans in, TO to thaw (50C) waited till bean mass hit 50C and hit full power to first crack at about 20mins, then backed off to 225C on the dial to SC @ 25.

Now i think i have first crack to SC sorted, i can get 2-4C/min easy as to control, i really want a faster climb to first crack though, i will try dropping in at 150 tmrw night see how that goes, i think i will have to cut the inner basket down to get bigger batches though, i will however try the Permatex Silicone first though.

Im having fun doing all this, i may sound annoyed but im really not, my coffee IS tasting better, great comments from friends and family, and they dont know ive changed roasting methods, so thumbs up to the KKTO, ill get there, tweaking and practice makes perfect!!

[WSullivan]

Re: My new KKTO - learning to use it!

Ok, grabbed the hi temp silicone from supercheap yesterday and applied it to the top and bottom of the KK adaptor ring and the inner ridge of the outer pot......it set dry overnight.

Sister in-law rang pleading for some coffee, any excuse to roast I say!! So i preheated to 150C let the roaster really completely get up to temp, dropped in 600gm of Indo once again, had some initial problems with the temp probe, but it was heading to first crack as per normal at around 15C/min, now the problem I was experiencing was a drop of climb at around the 7-8min mark, down to about 6C/min mark......sorted! It got down to about 10C/min and held it due to a hotter thermal mass! Perfect!

Hit first crack @ 197C @ 13:30 and SC @ 210C @ 19 mins, had to turn off the heat at 17 mins, thermal mass did the rest of the work for me!

Ps there was no leakage of hot air at all with the silicone applied, it was all coming out of the TO vent.......is this ok KK ?

Happy happy! Will post profile tmrw, cheers Warren

[A_M]

Re: My new KKTO - learning to use it!

Ok, grabbed the hi temp silicone from supercheap yesterday and applied it to the top and bottom of the KK adaptor ring and the inner ridge of the outer pot......it set dry overnight.

Sister in-law rang pleading for some coffee, any excuse to roast I say!!

So i preheated to 150C let the roaster really completely get up to temp, dropped in 600gm of Indo once again, had some initial problems with the temp probe, but it was heading to first crack as per normal at around 15C/min, now the problem I was experiencing was a drop of climb at around the 7-8min mark, down to about 6C/min mark......sorted! It got down to about 10C/min and held it due to a hotter thermal mass! Perfect!

Hit first crack @ 197C @ 13:30 and SC @ 210C @ 19 mins, had to turn off the heat at 17 mins, thermal mass did the rest of the work for me!

Ps there was no leakage of hot air at all with the silicone applied, it was all coming out of the TO vent.......is this ok KK ?

Happy happy! Will post profile tmrw, cheers Warren

I am interested in how teh Hi temp Si travels...

I tend to run for about 5 min at thaw..Aprox 70C with my beans in...

Then ramp to 250 .... But have not logged the rate... But it does taper off as I would expect...

FC at about 12 to 14 min at about 190C + 5 (time starts after kicking in the heat...)

Burp and knock teh heat back to 220 / 225

SC about 5 to 8 min later.. Sometimes this is a little hit and miss as to when it really starts Vs rolling SC - Usually around 205 - 210..

Fluster and forget to get teh temp probe out and then dump and cool - About 2 - 3 min..

Will have to do a log and a profile one day... But for now it tastes great..

Thus yours sounds OK.. Proof will be in teh cup :-)

[Koffee_Kosmo]

Re: My new KKTO - learning to use it!

Ps there was no leakage of hot air at all with the silicone applied, it was all coming out of the TO vent.......is this ok KK ?

Yep thats OK

When I started experimenting with my roaster I was hesitant to start with large batches
From memory I think I started with 350gr and built up with small mods

However even some of my longer roasts tasted fantastic

Try the bean equalization technique like AM

I tend to run for about 5 min at thaw..Aprox 70C with my beans in...

KK

[Dimal]

Re: My new KKTO - learning to use it!

Perhaps the slightly longer thermal gradients are due to the limitations of your particular TO Warren... :-?

Since KK completed all of the development of the KKTO using a Tiffany TO, thats what Ive stuck with and they also seem to be pretty easy to get hold of. The proof of the pudding with my setup has yet to be christened, while waiting for the finishing touches to be applied to the KKTO Kit thats coming my way.... Starting to get a little excited I must say.... [smiley=2vrolijk_08.gif]

Mal.

[WSullivan]

Re: My new KKTO - learning to use it!

I agree mal, as I said before, and if my cookwell breaks.......Ill grab a Tiffany, but till then Im happy with the profile Im getting now, 13 mins to FC is Ok by me, and the coffee is tasting amazing too!

[Dimal]

Re: My new KKTO - learning to use it!

I agree mal, as I said before, and if my cookwell breaks.......Ill grab a Tiffany, but till then Im happy with the profile Im getting now, 13 mins to FC is Ok by me, and the coffee is tasting amazing too!  

Thats the main thing of course Warren.... 8-)

I must have missed where you mentioned the future acquisition of a Tiffany TO. All the best mate [smiley=thumbsup.gif]

Mal.

[A_M]

Re: My new KKTO - learning to use it!

I agree mal, as I said before, and if my cookwell breaks.......Ill grab a Tiffany, but till then Im happy with the profile Im getting now, 13 mins to first crack is Ok by me, and the coffee is tasting amazing too!    

I use a Cookwell and like the glass element as it generates a light and I can see instantly when heat / power is being applied..

In addition only $79 so I can have a spare if I want  ;D

I also enlarged a number of the holes in the heat shield to assist with air flow..

NOTE:  There are some different models out there with different ratings..  

Tiffany = 1400
CookWell = 1300 and 1400 (Stated 1400... But element marked 1300)
Others = 1300 and 1400

Note there are now a sway of different ones on e- b a y  "TURBO  OVEN "  and most are 1300W to 1400W

There is also some "TURBO OVEN SHEILD CLEANER"  ???

[Koffee_Kosmo]

Re: My new KKTO - learning to use it!

Great to hear you are getting good results almost from the get go

Also note, the roaster will roast better once seasoned with coffee oils and that will take about 10 roasts

So hang in there and things will get better with time, and by then you will know its strengths and use them to your advantage

KK

[Koffee_Kosmo]

Re: My new KKTO - learning to use it!

Im thinking of cutting off the top of the basket so the heat source is closer to the bean mass, what do ya think?it just seems to be pushing it a bit hard, im thinking the cookwell isnt quite as powerful as the tiffany that KK is selling in his kit,see photo below

I have also been thinking with my investors hat on

I just recalled a mod I had thought of early on, but was not called upon to use it

Its an easy and reversible mod
A cylinder tube same diameter as the grill of the TO
Make it the length you desire or double sliding tube for adjust-ability
This gives you a closer to the bean mass starting point for the fan forced heat

KK

[lindsayra]

Re: My new KKTO - learning to use it!

A cylinder tube same diameter as the grill of the TO

I like the sound of that idea very much.

Lindsay

[WSullivan]

Re: My new KKTO - learning to use it!

Ok, im really happy, ill post this and comment on it after touch.....