HomeRoast Digest


Topic: a stronger popper fan.. (4 msgs / 103 lines)
1) From: Tom Bellerue
Well, a friend at work got a computer fan the other day that is really
powerful. I started wondering how hard it might be to get it some power and
fit it to the upper half of a popper assembly, maybe up my batch size a bit.
I've got a toastmaster with a fried fan from my 1st mod attempt, would love
to see it reincarnated as a 6-8 oz roaster deluxe..! Mostly I've only seen
variacs discussed at mod sites and in forums, haven't seen very specific
info on doing a mod like this. Here's a fan with 75cfm:http://tinylink.com/?9kXrOxvV9SProbably adapting it for use would be a hassle compared to something not
made for computer use, but that's the basic idea. I'm slowly wading through
various types of fans at mcmaster-carr but haven't found anything
appropriate yet. Any advice would be great!
tom:)

2) From: petzul
Hi Tom,
This is just an update and is not intended to discourage you. Lots of us 
would like to roast over half a pound with a popper thingie.
People have been experimenting with increasing the airflow on poppers.
Even so far as to hook the output of a shop vac onto it. (You can get 
one from Home Depot for less than 30 bucks.)
With that set up it is easy to blow 8 0z of beans all over the cooking 
area.  :) :) he  he!
However, all that wind going through is hard to heat with only 1200 to 
1500 watts :( 
(someone also once suggested one of those jet engine type space 
heaters.. egads!)
Hence the ideas have run to recirculating the hot air; and about the 
cheapest way to do that is with the turbo crazy set up. This is sane, 
and works fine :)
But this, to me, is roasting blind. I really like to see the beans 
blowing around in an air popper, and especially like that all the chaff 
just blows away.
With some simple mods the 1500 watt The Poppery from West Bend can roast 
180 GR very nicely :)
But this is not enough either.
I would dearly love to roast a pound with an air popper,
and I keep building stuff that does not work all that well. :((
It seems like you need to have a larger roasting chamber along with more 
heat, and/or recirculate it.
Right now I am collecting metal bowls and dishes from thrift stores in 
order to cabbage something together along the lines of a giant rosto.. 
well.. perhaps not giant, but something that will swirl a pound of beans. :)
So far I have stuff to power it:
2 heating coils from  turbo ovens,
and one of those hand held Red Devil vacuum cleaners.
Now that little monster moves a bit of air!
All my experimenting does not cost me much cash, thrift stores exist for 
people like me :) I suppose I help keep them in business.
As an added benefit, I am having much more fun than just buying a Hot 
Top, and watching a few hundred grams... roast to the beep ;)
Now if I could just build an espresso machine instead of paying 1200 + 
for one.
Anyone built one from scratch yet?
PeterZ
Glad there are so many fruitful thrift stores, here in LHC.
Tom Bellerue wrote:
<Snip>

3) From: Tom Bellerue
<Snip>
Sounds fun! I'm a little leery of using a vacuum, perhaps I can re-look at a
variac, or throw off my shackles (my thermocouple anyway), a try to 'Wok
like McKoffee'..
tom:)

4) From: Ken Mary
<Snip>
This fan develops only 8 mm water column. You may need up to 4 inches wc
depending on bean depth.
If your Toastmaster's rectifiers are gone, they can easily be replaced. But
if the motor is burned out, then it may be too much trouble to repair.
Hand held vacuums are powerful, but can be controlled with a variac or even
an incandescent light dimmer.
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