topbanner.gif
December 18 2014 20:11:47
HRO Summer Raffle
Donate
Please enter your site username (if you have one) and your email address (required) to be sent with this donation for tracking and contact purposes.


Site Username
If you don't have a site username, just enter "Guest"


eMail Address **REQUIRED**

Login
Username

Password



Not a member yet?
Click here to register.

Forgotten your password?
Request a new one here.
Navigation
bullet2.gif HOMEROASTERS.ORG
bullet2.gif Active Forums
bullet2.gif ALL FORUMS
bullet2.gif Downloads
bullet2.gif News
bullet2.gif Forum FAQ
bullet2.gif Contact Me
bullet2.gif Photo Gallery
bullet2.gif Search
bullet2.gif User's Voice
Forum Threads
Newest Threads
bullet2.gif Any ideas for a simp...
bullet2.gif Sold Out Sulawesi To...
bullet2.gif NEW (to me) San Fran...
bullet2.gif Sign Up right here...
bullet2.gif Recent Happy Mug Beans
Hottest Threads
bullet2.gif What's in Your Ro... [493]
bullet2.gif SIGN UP FOR BULK ... [144]
bullet2.gif Favorite Green Co... [93]
bullet2.gif Quest M3 [89]
bullet2.gif Modifying the Pop... [70]
Users Online
bullet2.gif Guests Online: 4

bullet2.gif Members Online: 0

bullet2.gif Total Members: 3,546
bullet2.gif Newest Member: big
BotSlap Panel
bullet2.gif Last check: 12/18/2014 19:43
bullet2.gif Slap count: 0
bullet2.gif Last checked ID: 4028
View Thread
Homeroasters.org » BUILDING A ROASTER » Fluidbed Roaster
Who is here? 2 guest(s)
 Print Thread
Brewer to Roaster..blower question...
freshbeans
Hi tra,
I made the link clickable, but it appeared to be 'private'

Settings?? -Scott
 
tra757
Thanks, I made it public.

Tim
 
danw2002
the thing i was thinking for this was a dual walled vent like is on my
Gas water heater, use it just above the heat coils, or even mount the coils inside it, then use my chaff/heat return fan to blow air down from the top along the sides, through this outer pipe and back into my air intake for the heat elements..and make it adjustable to change the heat rise, depending on what you needed the roast system to do....many ideas...so little time....mmm
Dan Williams...WHAAAT!?!?!? I have NOT had enough coffee.....
 
oldgearhead
Well I thought I thought of everything. But of course there is one tiny detail. As I started to assemble the 5 modules into a complete unit I
discovered I had no way to attach the manifold thermocouple to the PID.
Furthermore, after turning my shop upside-down, I must conclude the only female 'K' connector in Indiana was missing. So, while waiting for the mailman I ordered some 'Mighty Mite' insulation for the manifold and pre-tested the modules:
Module 1 (base & blower) - Check
Module 2 (Brewer frame, speed control, and SSR) - Check
Module 3 (Brewer front & PID) - Check
Module 4 (Electrical entrance and control panel) - Check
Module 5 (Brewer top, switches, air baffle, and air recycle box) - Check
oldgearhead attached the following image:
ladder.jpg

Edited by oldgearhead on 06/28/2011 06:20
 
seedlings
30 amps! What size wire did you run from the breaker to the roaster? I used #10 for 240V, 20A.

CHAD
Don't put the cart before the horse. Put the horse in the cart and listen to him say "weeeee" all the way down the hill.
 
oldgearhead
Breaker is 40A, wire is 10ga, line cord is 14/3. I can run about anything because the distance is short, the main is a simple QO and it has room for another 80A. I really haven't totally ruled out 220 yet. But the current set-up will probably peak at 21A on 120.

OGH IBEW 1225
 
oldgearhead
Saturday assembly recap page 01:
Okay the female TC connector has arrived, each module has been checked out, and its time to put this thing together.

I'll start with an image of the base and blower. I shot this with a $900.00
lens that I managed to miss-focus:
oldgearhead attached the following image:
dsc_8338.jpg
 
oldgearhead
Saturday assembly recap page 02:
Here's the heating manifold. Its all sealed with Permetex Red and fiberglass tape.
oldgearhead attached the following image:
dsc_8339.jpg
 
oldgearhead
Saturday assembly recap page 03:
Here's the front. Notice the female TC connector? Very important item.
oldgearhead attached the following image:
dsc_8340.jpg
 
oldgearhead
Saturday assemblt recap page 04:
The top with all the control switches and the air control mixing baffle:
oldgearhead attached the following image:
dsc_8341.jpg
 
oldgearhead
Saturday assembly recap page 05:
This is the one-piece frame, back. and sides. See the obsolete Dayton
speed control? I hope it works out. My only concern is it has a limited turn-down of only 25% min speed.
oldgearhead attached the following image:
dsc_8342.jpg

Edited by oldgearhead on 06/30/2011 19:05
 
oldgearhead
Saturday assembly recap page 06:
..and the control box. If you look real close you will notice
I forgot to wire a neutral to the relay. So it didn't quite work the way I planned the first time...
oldgearhead attached the following image:
dsc_8345.jpg
 
oldgearhead
Saturday assembly recap page 06:
The mailman just dropped off the firewall insulation I ordered. You know, the stuff they use to line the inside of 'funny cars' with.
Here is the completed heat manifold.
oldgearhead attached the following image:
dsc_8347.jpg
 
greencardigan
oldgearhead wrote:
Saturday assembly recap page 06:
The mailman just dropped off the firewall insulation I ordered. You know, the stuff they use to line the inside of 'funny cars' with.
Here is the completed heat manifold.

Great pics.

Can I ask how easy it will be to replace your element if it's every required?
www.greencardigan.com/misc/gifs/ausflag.gif
 
oldgearhead
Okay I just couldn't wait so I tossed in 400 grams of some Thai 'Hot Boy'
beans and turned it on. Here is my list of issues:
1) The manifold TC is worthless (to much air flow maybe?) it reads 345F
when the beans are in a 'roaring' first crack.

2) How did I know the beans were in first crack? I got close and started to listen when I received a shower of chaff accompyed by the 'cracking' noise comming from over my head! I checked everything and didn't see anything wrong until I realized the pressure at the top of the RC was actually lifting the brewer top in the air. I've got to tie down the top or add weight or clamps.

3) The Z&D baffle-separator worked well but as David predicted it isn't big enough. That shouldn't be too hard to fix because there is plenty of room in the RC you could even put a cyclone separator in it if you wanted.
However, for coffee I think a baffle-separator is just about as effective.

4) It was 96F in the shop this PM so I didn't try to recycle any air.

Conclusions:
A) 400 grams to first crack in 10 minutes. Full-city in 14 minutes. I don't (intentionally) do dark roasts.
B) Current with 120 VAC was 20 amps with heater on 100%.
C) The speed control could be a problem. With 400 grams I couldn't turn it down quite far enough for a good 'spout'. I'll try 500 grams next time.
D) I guess I need to gring a slot in the RC base for my BMT probe.
E) I wonder what it will do if I can seal the top?

I'll try to get some video over the weekind.
 
oldgearhead
greencardigan wrote:
oldgearhead wrote:
Saturday assembly recap page 06:
The mailman just dropped off the firewall insulation I ordered. You know, the stuff they use to line the inside of 'funny cars' with.
Here is the completed heat manifold.

Great pics.

Can I ask how easy it will be to replace your element if it's every required?

Well its 4 bolts and one hose clamp to remove the manifold. THe insulation is fastened with some tape. Cut the wires, remove a bolt and the element will slide out. I think the worst part would be digging out the red stuff..and the re-installation is a bit tricky.
 
greencardigan
Congrats on a sucessful 1st roast! I was wondering how it would go with only 1450W element.

Looking forward for a video.
www.greencardigan.com/misc/gifs/ausflag.gif
 
dja
Jim

one quick question, whats your opinon now that you have a roast done where you can see so much of the bean mass.

I had pressure issues myself with my roaster trying to hold it together when its at 450 degrees ain't no fun cowboy! you don't relize how much pressure these things take to move said beans.

David
Edited by dja on 06/30/2011 20:44
I pour Iron and roast Coffee BeansThumbsUp
If life seems normal your not going fast enough Mario Andrette
 
seedlings
Speed control doesn't get low enough... I have the same trouble. In disassembling them, though, there is a variable resistor inside. I've wondered if it sets the low on-off threshold? You can access the dial if you take the back off. Maybe I'll play with it sometime if you don't beat me to it.

CHAD
Don't put the cart before the horse. Put the horse in the cart and listen to him say "weeeee" all the way down the hill.
 
greencardigan
seedlings wrote:
Speed control doesn't get low enough... I have the same trouble. In disassembling them, though, there is a variable resistor inside. I've wondered if it sets the low on-off threshold? You can access the dial if you take the back off. Maybe I'll play with it sometime if you don't beat me to it.

CHAD

There's a good chance your router controller has a similar circuit to the DIY version that RoasterRob and myself are using. It has a variable resistor in parallel with the main knob/variable resistor that sets the maximum resistance and therefore minimum power.

http://www.epanor...ml#1kw230v

Do you have a circuit diagram for the router controller?
www.greencardigan.com/misc/gifs/ausflag.gif
 
Jump to Forum:
Similar Threads
Thread Forum Replies Last Post
NEW (to me) San Franciscan 1 lb sample roaster Drum Roaster (Store Bought and Commercial) 8 12/18/2014 08:54
First Build - 5kg Roaster - Here we go!! Drum Roasters 34 12/17/2014 16:04
Custom stove top roaster Popcorn Popper roasting 6 12/14/2014 18:40
Artisan Graphing question Dataloggers/Controllers/Rate of Rise Meters 1 12/14/2014 10:04
What's in Your Roaster This Week? Roasting Coffee 494 12/12/2014 14:43
Member Poll
Are you expecting any coffee gear for Christmas?

I HOPE SO

you bet

no I have all I need

I keep peeking...

You must login to vote.
Shoutbox
You must login to post a message.

allenb
12/18/2014 17:23
Swap time! woohoo Don't delay in firing up those roasters! BBQ grill

ginny
12/18/2014 07:01
http://www.homero...ro
wstart=0
Swap Notice is up...

JackH
12/18/2014 02:30
Welcome big thanks for joining!

ginny
12/17/2014 15:28
jeffgsd welcome2 thanks for joining us...

JackH
12/17/2014 13:31
Welcome zivsade to Homeroasters!

ginny
12/17/2014 06:08
Today I will post the Christmas Coffee Swap list... party

Koffee Kosmo
12/16/2014 17:55
Welcome all new members christmas tree

JackH
12/16/2014 13:02
welcome2 swroasting thanks for joining!

JackH
12/16/2014 06:41
Welcome coffeecat pouring

260zman
12/16/2014 02:15
Thanks for the friendly welcome folks!

allenb
12/14/2014 10:36
slepax Welcome to HRO! Welcome

JackH
12/14/2014 04:40
welcome cup 260zman thanks for joining!

allenb
12/13/2014 22:17
rmmiday Welcome

ginny
12/11/2014 14:42
So far all family ok but it's just starting.

JackH
12/11/2014 14:01
Welcome wheresryan to Homeroasters! pouring