moreshots Senior Member Joined: 17 Apr 2011 Posts: 225 Location: west of Chicago Expertise: I love coffee
Espresso: Cimbali DT1//Jura Z5 Grinder: Mazzer Mini, Pharos Drip: Technivorm Roaster: Made my own 2KG roaster
Posted Wed Nov 23, 2011, 8:31am Subject: Re: anyone know of a used San franciscan sample roaster for sale??
Yes will document it using an infrared burner from a Solaire portable grill Should work great but should have a test roast in the next week or two
I am just deciding what to do with the flow between the cooling box and the top pipe that extracts from the heating chamber Bill
germantownrob Said:
Great! I hope you will document your build, i am sure there will be many that will want to build there own and as you know there is a lot of research into coming up with a plan for this project. I will be very curious as to your final costs and hours in the build, my gut tells me it can't be cheap but the savings is in all the man hours it takes to build. Keep the details coming!
The IR Diedrich's use one motor for air flow through the cooling bin and roast chamber, 80/20, 50/50, or 20/80. The air flow going through the roast chamber is pre heated with heat syncs. Other machines have a seperate motor for chamber and cooling tray.
You should throw the picture over to the folks at homeroasters.org . They would love to see what you are doing. (We do too, of course).
Looks like great work. Nice to see.
Len
"Coffee leads men to trifle away their time, scald their chops, and spend their money, all for a little base, black, thick, nasty, bitter, stinking nauseous puddle water." ~The Women's Petition Against Coffee, 1674
hankua Senior Member Joined: 29 Aug 2009 Posts: 204 Location: Jacksonville, Florida Expertise: Just starting
Espresso: Salvatore One Black Grinder: Pharos,Rossi RR45OD, Lido,... Drip: CCD Roaster: Yang-Chia 800n
Posted Wed Nov 23, 2011, 3:48pm Subject: Re: looked for a roaster decided to build my own
Great work Bill! Looks very professional. My little Yang roaster has a similar design as yours and I can email you detailed photos as well as another album from a roaster builder in Taiwan.
My top tube has flangs on both sides for removal/cleaning. There is an air valve in the top tube, just a round flap with a knob on one end. The fan on the top tube has a heat resistant motor, with a cyclone chaff collector attached. The gas controls are simple and precise, a gate valve for gross adjustment followed by a needle valve for normal adjustment, then a very sensitive pressure gauge for tracking gas adjustments. In my second album are some pics of a home built burner pipe you could make yourself. My burners are on an adjustable bracket and can be raised or lowered. The drum has a unique adjustment for fine tuning the travel forward/backward that I can't quite figure, something simple would work fine.
Yang roasters have variable speed drum motors, and I'm discovering that's a nice feature to have especially when roasting small batches. I like having the air and gas control within easy reach of each other and learning how to use both together. A variable speed drum motor on your setup would really be sweet.
moreshots Senior Member Joined: 17 Apr 2011 Posts: 225 Location: west of Chicago Expertise: I love coffee
Espresso: Cimbali DT1//Jura Z5 Grinder: Mazzer Mini, Pharos Drip: Technivorm Roaster: Made my own 2KG roaster
Posted Sun Nov 27, 2011, 5:42am Subject: Re: looked for a roaster decided to build my own
worked on the gas system and will install it today , propane is 2500 btu's/ scfh. for better understanding I installed a flow meter to measure gas flow. last night the test showed that the 3 positions were low 2 scfh , med 3 scfh high 5 scfh and is needed you could push down the regulator dial and get 7 scfh . all these would be x 2500 for btu value. also the solaire burner I am using is infrared and takes say 2-4 minutes to get to temprature then its fine. connected the drive motor box and fan controls but have to make the fan variable speed for better control.
anyhow moving forward, bought a smal cyclone for the chaff collection should be here next week.
moreshots Senior Member Joined: 17 Apr 2011 Posts: 225 Location: west of Chicago Expertise: I love coffee
Espresso: Cimbali DT1//Jura Z5 Grinder: Mazzer Mini, Pharos Drip: Technivorm Roaster: Made my own 2KG roaster
Posted Mon Dec 5, 2011, 12:24pm Subject: Re: looked for a roaster decided to build my own
I have had the oportunity to build and now have a first roast for this unit, if you are thinking about making a unit for your self I would highly recommennd it . I have had a great time working on it here and there duiing the last 3 months and now its done. you will learn a lot in the process and most importantly you will know your maching better than anyone. I completed mine this weekend and also just completed the first roast this morning . I have a lot to lean and also got a great product of the first 2# roast .
Thanks for everyones help and support in answering questions. this roaster has the capacity from 1 to 5 pounds a roast/.
moreshots Senior Member Joined: 17 Apr 2011 Posts: 225 Location: west of Chicago Expertise: I love coffee
Espresso: Cimbali DT1//Jura Z5 Grinder: Mazzer Mini, Pharos Drip: Technivorm Roaster: Made my own 2KG roaster
Posted Tue Dec 6, 2011, 10:14am Subject: Re: looked for a roaster decided to build my own
I have sound mechanical judgement but prior to this I had NO welding experiance at all . so this was the learning curve . for the most part you can get away with heavy tack welding but after some practice and setting of the maching correctly beads will become easy to do .
machining was for the drum only everthing else cut on a bandsaw then ground.
Bill
t
thehubbell Said:
This is really great. I would love to do something similar. What degree of skill do you have with welding and machining?
moreshots Senior Member Joined: 17 Apr 2011 Posts: 225 Location: west of Chicago Expertise: I love coffee
Espresso: Cimbali DT1//Jura Z5 Grinder: Mazzer Mini, Pharos Drip: Technivorm Roaster: Made my own 2KG roaster
Posted Tue Dec 13, 2011, 10:31am Subject: Re: looked for a roaster decided to build my own
We have roasted 3 loads this morning of different blends at 2.5# per batch with great sucess. the machine is working great. the first crack is comming at around 10 munutes and the second out at 14 to 15 minutes.
moreshots Said:
I have sound mechanical judgement but prior to this I had NO welding experiance at all . so this was the learning curve . for the most part you can get away with heavy tack welding but after some practice and setting of the maching correctly beads will become easy to do .
machining was for the drum only everthing else cut on a bandsaw then ground.
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