topbanner.gif
February 27 2015 09:46:49
Community Outreach
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 Rancilio Sylvia
bullet2.gif Thank You to all
bullet2.gif Test Only folks...
bullet2.gif Digital PID 1/4 - 1/...
bullet2.gif slow roasting
Hottest Threads
bullet2.gif Favorite Green Co... [97]
bullet2.gif Rebuild of San Fr... [83]
bullet2.gif super slow Gene :... [40]
bullet2.gif The Roaster is Re... [37]
bullet2.gif Hybrid Drum Roast... [33]
Users Online
bullet2.gif Guests Online: 3

bullet2.gif Members Online: 1
okmed

bullet2.gif Total Members: 3,668
bullet2.gif Newest Member: gzd888
BotSlap Panel
bullet2.gif Last check: 02/27/2015 09:36
bullet2.gif Slap count: 0
bullet2.gif Last checked ID: 4153
View Thread
Homeroasters.org » BUILDING A ROASTER » Fluidbed Roaster
Who is here? 1 guest(s)
 Print Thread
Brewer to Roaster..blower question...
allenb
For what it's worth on aluminum for roaster applications,

The stock element in my German made Sirocco fluidbed is housed in an aluminum tube with no mica board between the nichrome and tube. The distance between nichrome and tube wall is .25" and the nichrome gets very bright orange. The plastic fan housing connects to the aluminum tube although there is a thin silicone gasket separating the two pieces. I can't see anyone ever having a problem with aluminum unless they were going to use it to house a heat knife element hitting temps that would cause the aluminum to glow which would be pretty well out of roasting temps.

Obviously if there were a fan failure and no thermal fuses or high limit safeties it would be preferable to have something with a higher melting or distortion point.

I'll have to admit I like using stainless also but for those who can't fabricate parts out of it at home nor have the $ resources to hire a shop I wouldn't keep aluminum off the list.

Allen
1/2 lb and 1 lb drum, Siemens Sirocco fluidbed, presspot, chemex, cajun biggin brewer from the backwoods of Louisiana
 
oldgearhead
I can report a little progress. I got the blower installed.
I have a question for the group:
Has anyonre tried chrome sink steel for a heat manifold? It's the
perfect size for the Master Heat Gun 1.4KW element..
OGH
oldgearhead attached the following image:
dsc_5399.jpg
 
freshbeans
Yes, I used 2 lavatory drains for the Max Heatgun MH-1.
1 for the RC inlet, 1 for the exhaust port. I'm also using the chrome piping for the exhaust line.
No problems with heat, and it mates with a whole bunch of easy to find stuff. Looks great! -Scott
 
oldgearhead
Thanks Scott for the quick answer? Will it cut okay with a Ridgid pipe
cutter? How does it drill?
 
seedlings
I'm curious how much heat you'll be able to recycle in the PVC? What's its operating temp rating? From my experience small increases in inlet air temperature can be a big help roasting. As an example, when I roast in 40F weather and a strong wind blows in the garage I can watch the ET drop by 5 degrees.

100F to 150F inlet air temps would show fantastic results.

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.
 
freshbeans
Its a whole lot easier than stainless! I used a hacksaw for cutting. Drilling is easy.
Not as easy as aluminum, but the most basic tools will work.
Curious about your heat transition piece ; It looks like a cocktail shaker top? Bravo!!!! Scott
 
oldgearhead
Chad,
I should be able to experiment with some recycled air. I'm planning a 'mixing box' in the front of the old Bloomfield. I will have ambient air
and air from the RC chaff collecter available at the inlet filter screen.
OGH
 
oldgearhead
freshbeans wrote:
Its a whole lot easier than stainless! I used a hacksaw for cutting. Drilling is easy.
Not as easy as aluminum, but the most basic tools will work.
Curious about your heat transition piece ; It looks like a cocktail shaker top? Bravo!!!! Scott


yes, it's a 3.5" shaker top.
 
oldgearhead
Progress report.
All of the big cuts have been made, and I'm down to a few (12) smaller holes, and Dave has made some very fine parts for my RC.

New Roaster June 2011 To-do List:

1) Install new brewer skin-to-frame fasteners. Old ones were removed because the HC-RC hole passed right through them.

2) Install hinge between brewer top and frame. I must drill twelve difficult holes in stainless steel.

3) Install heater, pressure switch, and TC in HC manifold.

4) Wrap HC manifold with exhaust tape, and seal with silicone paint.

5) Attach HC manifold to blower.

6) Attach brewer frame to wood base.

7) Install brewer skin.

8) Set RC in place and measure the top gap for the three inch diameter chaff collector/screen riser. Make or buy the riser.

9) Float some beans (Great Northern and coffee).

If all goes well, its heat sometime in July!

Thanks to everyone Scott, Chad, Dave, and etc. (especially dja), for all the help so far. Iím sure Iíll need more help as things progress.

JRS (AKA: oldgearhead)
oldgearhead attached the following image:
dsc_5661.jpg
 
seedlings
Awwwww... we have to wait till July? Boo. :(

(But I must say, "nice progress," though ThumbsUp )

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
First integration day.
Today I will fit everything together, so that, I may determine the length for the 3" diameter RC riser pipe. The riser pipe contains the chaff screen/ collector, and it connects the RC to the exhaust orfice baffle. So, its a pretty critical part.

I've finished most of the items on my to-do list, except:
4) Manifold wrap - I'm going to skip this unless I find too much air leakage around the manifold machine screws. I would like to get some manifold skin temperature readings as well.
8) Float some beans - I'm going to wait till I have the riser finished before this step.


Lets start by installing this:
oldgearhead attached the following image:
dsc_5738.jpg
 
oldgearhead
.....in this hole:
oldgearhead attached the following image:
dsc_5739.jpg
 
oldgearhead
...well that turned out pretty good!
oldgearhead attached the following image:
dsc_5742.jpg
 
freshbeans
oldgearhead wrote:
...well that turned out pretty good!


Yes it did! Very nice. I really like the plumbing fittings...very universal.
Your design lends itself to more assembly and less fabrication.
Nicely done!
I made a little discovery that a 1.25" conduit coupler works very well for joining 1.5" pipe. It just so happens that the barrel of my heat-gun is 1.5".
The inlet to a martini shaker was also 1.5"
Cheers, -Scott
freshbeans attached the following image:
connector.jpg
 
oldgearhead
Well Scott, I repurposed yet another part! The 3" riser I mentioned earlier needs to be 3" long. So what's made of 3" aluminum pipe and is 3" long? ??

If you guessed turbo intercooler hose coupler, your right. As soon as I discovered that, I cast an eye toward my ancient Saab 9000 (76 mm). But she's safe because some guy in Michigan makes them and sells them on eBait for less than a 12" piece of pipe, and I don't have to pull the old pipe cutter or stumble over an 8.85" roller.

As far as fabrication goes, I would be lost without David Allen's help. He
is great!
oldgearhead attached the following image:
dsc_5742-2.jpg
 
oldgearhead
Okay, some progress to report. I received the 3 x 3 riser today. Now I have the air loop closed. I have control of both the inlet ofrice and the outlet baffle, as well as the blower speed..video to follow.
oldgearhead attached the following image:
dsc_6267.jpg
 
oldgearhead
One pound of Navy Beans:

Edited by seedlings on 06/16/2011 08:14
 
greencardigan
Try putting the youtube link inside [video] tags.

What is the diameter of the top of your funnel?
 
oldgearhead
I tried it inside the U-Tube tags, with no luck. So I'll try the one that's for everyone but U-tube..well that works!
The riser is 3 inches by 3 inches..

Edited by oldgearhead on 06/15/2011 20:34
 
greencardigan
oldgearhead wrote:
The riser is 3 inches by 3 inches..

I meant the top of the cocktail shaker lid. I'm trying to find a suitable size shaker for a future roast chamber.
 
Jump to Forum:
Similar Threads
Thread Forum Replies Last Post
Questions about new roaster build. Drum Roasters 7 02/26/2015 07:34
The Roaster is Ready to ship R1 Bullet Roaster 38 02/23/2015 21:55
1lb fluid bed roaster help Fluidbed Roaster 19 02/23/2015 19:46
Another modded popcorn roaster Fluidbed Roaster 5 02/14/2015 10:07
Another electric 500g home roaster Drum Roasters 20 02/14/2015 08:15
Member Poll
Do you go to coffee houses for a cup?

Yes, all the time

Never

Depends on where I am

Only if I have checked them out ahead

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

ginny
02/27/2015 09:34
i am conducting a test... this will be interesting for me at an rate. rockon

ginny
02/27/2015 09:29
support your community here... or??? roar

ginny
02/27/2015 09:27
don't forget members to shout out to Miss Linda as a new Forum Moderator and Resident Chef... limb

JackH
02/27/2015 02:20
welcome2 gzd888 to Homeroasters!

ginny
02/26/2015 17:05
thanks to those who took a moment to shout out to Miss Linda...I appreciate it...

ginny
02/26/2015 17:05
muddyjoesjava Welcome thanks for joining, enjoy...

ginny
02/26/2015 14:39
broeker thank you very much for your kind words and we all appreciate them... cool

broeker
02/26/2015 14:33
Many thanks for the hard work the Admins do keeping all this going.....

JackH
02/26/2015 14:25
Hello Test Pilot! just catching up on some new posts.

Test Pilot
02/26/2015 14:23
Hi Jack... tiki

Test Pilot
02/26/2015 14:23
A foodie, cool and hello Miss Linda and a huge welcome roar

ktony
02/26/2015 14:20
Hi Jack...

ktony
02/26/2015 14:19
Miss Linda, nice to see more women around here. Welcome, party

zombie coffee
02/26/2015 14:18
Hi Jack, smoking

zombie coffee
02/26/2015 14:14
howdy Miss Linda, welcome to the group and a chef no less... cool