KKTO Hybrid

derrilex · May 2012

Ok, now that last nights wine has cleared my system, its time for some more pics. The motor mount is a bit crude but effective. I butchered the window regulator to suit and inverted the motor to get more clearance. Slight height difference between the mounting surfaces of the motor cradle so I used 22mm timber on one side and 19 mm the other - again crude but effective. I welded a 1/4 drive socket to the gearbox sprocket after removing the gearbox from the motor. It all lines up great with about 3 mm clearance ( depth wise).

derrilex · May 2012

The base is just 18 mm MDF. I ran the router around to make the recess for the frypan legs. It fits perfectly and takes all the location hassles out of the equation. You can position it any way that suits, even move it around mid roast. I dont know if I will need any insulation on the top of the MDF. I'm sure heat from the TO will come down past the drive shaft and there is the frypan element there as well - see what happens

derrilex · May 2012

The agitator. I struggled with this for ages. I'm going with a 3 blade made from bits of whisk with a bent piece of metal at the base to try and keep the beans away from the centre. The blades work well but a few beans still get caught at the centre. I'll try it and see how it goes. Its ugly as but I'll judge it based on its function rather than its form :rofl:

Brett H · May 2012

http://www.ehow.co.uk/how_6598014_build-12v-5a-power-supply.html 2nd hand ones at the computer markets are really cheap but as always after modification have it tested and assessed by a qualified AM! A laptop power supply 2nd hand would be really cheap and better for what you want. http://www.sundaycomputermarket.com.au/computer market.html

Koffee_Kosmo · May 2012

If you feel that 3 wire blades are going to fast and forcing the beans to spill over the edge just remove one loop Looking good so far :thumb: KK

Brett H · May 2012

I used a 1/4" copper pipe that had the centre drilled out and the ends flanged out. I'll post a pic later.

Brett H · May 2012

on 1337471440:

I used a 1/4" copper pipe that had the centre drilled out and the ends flanged out. I'll post a pic later.

A quick snap. Despite appearances it agitates the beans very well and because it is so malleable I could tweak it for best coverage. The SS wires are from an old rotisserie.

derrilex · May 2012

Ended up with the 12V 5 amp unit from jaycar. Got a cheapie fan, not a eco friendly one and a bucket.

Koffee_Kosmo · May 2012

Looking "fan"tastic :thumb: Roaster looks nice as well, perhaps its roast day tomorrow if the Turbo Oven is sourced KK

Brett H · May 2012

Mate... seriously, it looks a bit too pro! Spot the builder eh: Galvo strapping... Is there nothing it can't do!!! :thumb:

Koffee_Kosmo · May 2012

Don't forget to make a video of the roaster I would also like to take a video of both roaster versions side by side Have to tee up a day for it KK

derrilex · May 2012

Totally out of my league KK. Pics are one thing, vids quite another but you are more than welcome to handicam up anytime you want. Hopefully my greens arrive tomorrow and I'll get the TO from Chris and all shall be well :thumb:

derrilex · May 2012

See if this link works http://s1174.photobucket.com/albums/r603/derrilex/roaster vid test/

Koffee_Kosmo · May 2012

on 1337560533:

See if this link works http://s1174.photobucket.com/albums/r603/derrilex/roaster vid test/

Yes it works with smooth operation Not bad for a few days work :thumb: KK

derrilex · May 2012

http://s1174.photobucket.com/albums/r603/derrilex/roaster vid test/ First attempt.

Koffee_Kosmo · May 2012

I also feel now seeing the beans agitate that it could use a little taming We can tame it by altering and tweaking the blades KK

derrilex · May 2012

KK, I guess so. Take one off ?

Koffee_Kosmo · May 2012

on 1337575465:

12 V AM. KK, I guess so. Take one off ?

It's the amps that gives the juice for speed Yes cut one off and see how it goes Have a look at the KK videos on my you tube channel for a visual [embed=425,349]

KK

derrilex · May 2012

I know what you're thinking AM, variable resistor ? Couyld probably cobble something together from a fan speed resistor

derrilex · May 2012

First results. MM and Honduras COE

Koffee_Kosmo · May 2012

The first roast would be considered as :thumb: The second ( Photos 3&4 ) roast looks like its on the verge of second crack and needed a little more time That should not distract you from sampling it, it will just need extra time to degas KK

derrilex · May 2012

Go hard or go home is my motto :rofl: :rofl:

derrilex · May 2012

http://s1174.photobucket.com/albums/r603/derrilex/roaster vid test/?action=view&current=VIDEO0004.mp4 Go to video 1 Vid using 1 blade. Doesnt look that fast in real life but the camera doesnt lie I guess. Previously the beans were been spun around the bowl as one mass. Now thet are moving around a bit but with heaps more lift and roll motion. I think slowing it down a touch could be good

Koffee_Kosmo · May 2012

Had a look at the video (#1) Looks a fair bit better than previously It may need a stubby half size agitator at the opposite end of the full one Experiment a little and see what comes from it Use those coloured segments as your guide KK

derrilex · May 2012

Yep, love having a fiddle ^-^

derrilex · May 2012

The new frankenstien crack pipe agitator.

derrilex · May 2012

http://s1174.photobucket.com/albums/r603/derrilex/roaster vid test/?action=view&current=VIDEO0019.mp4 go to video 1 first part is at 10 ish volts and the second is a touch over 8 volts

Koffee_Kosmo · May 2012

Doesn't look that pretty :stir But the agitation is 100% better You are welcome to the wire one with springs I knocked up for you KK

derrilex · May 2012

It works well. The video does lie. It looks way more physco in the vid than in real life. Still, I'm convinced its the shape of the bowl that is causing issues. With a small load its ok (300gm) but get above that and the outer beans get no workout, just get kept to the outer. At least now they get a workout but at the expense of the central beans been overworked maybe ? I'm determined to make the current bowl work though. Tomorrow is a new day and with it comes a new agitator :rofl:

hiphipharar · May 2012

on 1337862355:

It looks way more physco in the vid than in real life.

"Physco"? Wasn't that a movie by Alfred Hitchcock? :P

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