Our Valued Sponsor
OpinionsConsumer ReviewsGuides and How TosCoffeeGeek ReviewsResourcesForums
Coffee: Home Roasting Talk
Z&D Update
Cafe Espresso Machines
Video reviews, nationwide installation, leasing options... Nuova Simonelli, Rancilio, La Marzocco.
www.seattlecoffeegear.com
 
Not Logged in: Log In to Postlog in
New Topics updated topics   New Posts new posts   Unanswered Posts new unanswered  
Search Discussion Board search   Discussion Board FAQ faq   Signup sign up  
Discussions > Coffee > Home Roast > Z&D Update  
view previous topic | view next topic | view all topics
showing page 4 of 6 first page | last page previous page | next page
Author Messages
PJK
Senior Member
PJK
Joined: 21 Jan 2002
Posts: 2,319
Location: Shingle Springs CA
Expertise: I love coffee

Espresso: Rancillo Silvia, Tonic...
Grinder: Modified Rocky, Elma side...
Vac Pot: Old Silex
Drip: Melitta BCM 4  +Some old...
Roaster: Hottop, Modified Z&D,...
Posted Tue Jun 8, 2004, 12:23pm
Subject: Re: Z&D Update
 

Several months ago I posted some pictures of my modified Z&D on this string.  At the time I said that the electrical part was a prototype and the final version would follow.

The death trap clip lead kluges are now gone and a second power cord to plug into the Variac is in place.  It is a three wire cord the ground of which is connected to the metal air duct such that the exposed metal of the roast chamber is grounded when the cord is pluged into a properly grounded outlet.

Here is a schematic of the new wiring in PDF form.

Photos of the cord and relay installation will follow if I have any luck with the camera.

Phil

 Z&D roast power.pdf

 
Philip J. Keleshian
back to top
 View Profile Visit website Link to this post
PJK
Senior Member
PJK
Joined: 21 Jan 2002
Posts: 2,319
Location: Shingle Springs CA
Expertise: I love coffee

Espresso: Rancillo Silvia, Tonic...
Grinder: Modified Rocky, Elma side...
Vac Pot: Old Silex
Drip: Melitta BCM 4  +Some old...
Roaster: Hottop, Modified Z&D,...
Posted Tue Jun 8, 2004, 11:56pm
Subject: Re: Z&D Update
 

I realized that I didn't say anything about the relay except to give the vender and part number on the schemo.  The coil is for 120 volts AC  and the contacts will handle 10 Amps on a 120 volt circuit.

I will now attempt to attach some photos.

This shows a piece of wood JB welded to the plastic case. The relay is to mount on the wood block.

Sorry it didn't work. The file exceded the 75 kbyte limit.  I will try to get someone smarter than me to compress the files and try again.

Phil

 
Philip J. Keleshian
back to top
 View Profile Visit website Link to this post
PJK
Senior Member
PJK
Joined: 21 Jan 2002
Posts: 2,319
Location: Shingle Springs CA
Expertise: I love coffee

Espresso: Rancillo Silvia, Tonic...
Grinder: Modified Rocky, Elma side...
Vac Pot: Old Silex
Drip: Melitta BCM 4  +Some old...
Roaster: Hottop, Modified Z&D,...
Posted Wed Jun 9, 2004, 6:22pm
Subject: Re: Z&D Update
 

I don't know what just happened but I'll try again.  Here is the wood mounting block for the relay. It is attached to the case with J&B weld.

Phil

PJK Said:

I realized that I didn't say anything about the relay except to give the vender and part number on the schemo.  The coil is for 120 volts AC  and the contacts will handle 10 Amps on a 120 volt circuit.

I will now attempt to attach some photos.

This shows a piece of wood JB welded to the plastic case. The relay is to mount on the wood block.

Sorry it didn't work. The file exceded the 75 kbyte limit.  I will try to get someone smarter than me to compress the files and try again.

Phil

Posted June 8, 2004 link



PJK: Pulley-1.jpg
(Click for larger image)

 
Philip J. Keleshian
back to top
 View Profile Visit website Link to this post
PJK
Senior Member
PJK
Joined: 21 Jan 2002
Posts: 2,319
Location: Shingle Springs CA
Expertise: I love coffee

Espresso: Rancillo Silvia, Tonic...
Grinder: Modified Rocky, Elma side...
Vac Pot: Old Silex
Drip: Melitta BCM 4  +Some old...
Roaster: Hottop, Modified Z&D,...
Posted Wed Jun 9, 2004, 6:27pm
Subject: Re: Z&D Update
 

Here is the bottom view showing the added relay.  Note the green ground wire soldered to a lug mounted to the metel air duct with a sheet metal screw.

Also illustrated is the routing of the leads from the roast heater.

Phil

PJK: Pulley-2.jpg
(Click for larger image)

 
Philip J. Keleshian
back to top
 View Profile Visit website Link to this post
PJK
Senior Member
PJK
Joined: 21 Jan 2002
Posts: 2,319
Location: Shingle Springs CA
Expertise: I love coffee

Espresso: Rancillo Silvia, Tonic...
Grinder: Modified Rocky, Elma side...
Vac Pot: Old Silex
Drip: Melitta BCM 4  +Some old...
Roaster: Hottop, Modified Z&D,...
Posted Wed Jun 9, 2004, 6:35pm
Subject: Re: Z&D Update
 

Here is a bit closer view of the relay.

Phil

PJK: Pulley-3.jpg
(Click for larger image)

 
Philip J. Keleshian
back to top
 View Profile Visit website Link to this post
PJK
Senior Member
PJK
Joined: 21 Jan 2002
Posts: 2,319
Location: Shingle Springs CA
Expertise: I love coffee

Espresso: Rancillo Silvia, Tonic...
Grinder: Modified Rocky, Elma side...
Vac Pot: Old Silex
Drip: Melitta BCM 4  +Some old...
Roaster: Hottop, Modified Z&D,...
Posted Wed Jun 9, 2004, 6:41pm
Subject: Re: Z&D Update
 

Here is an outside view where the cords enter.  Note that the larger strain relief nearly consumes all of the area in the depressed part where the cord enters.  I had to enlarge the original "double
D" hole with a Dremel and files to acomodate the new larger strain relief.

PJK: BackView.jpg
(Click for larger image)

 
Philip J. Keleshian
back to top
 View Profile Visit website Link to this post
PJK
Senior Member
PJK
Joined: 21 Jan 2002
Posts: 2,319
Location: Shingle Springs CA
Expertise: I love coffee

Espresso: Rancillo Silvia, Tonic...
Grinder: Modified Rocky, Elma side...
Vac Pot: Old Silex
Drip: Melitta BCM 4  +Some old...
Roaster: Hottop, Modified Z&D,...
Posted Sat Sep 4, 2004, 10:09am
Subject: Re: Z&D Update
 

Here is the latest addition to my Z&D.  Some time back I responded to someones post about getting more heat with the Z&D.  I mentiond my "pot holder trick" where I held a pot holder against the metal part of the roasting chamber.  I also put in my disclaimer about burned fingers and setting the potholder on fire.  

Here is a refinement of the same concept.  I made a collar of fiberglass cloth and some old steel strap which I had laying around.  I folded the cloth over to get more thickness (and more insulating value).  I used a small amount of RTV to secure the folds.  I then RTVed it to the metal strap and formed it to the chamber.

I preheat my machine then charge the chamber with beans.  I then turn the heater voltage to max.  (~140 volts) untill I reach 250 degrees F.  Then I cut the voltage to maintain 10Degrees F/minute untill I reach 300Degrees.  

Before It took about 2.5 minutes to reach 250 degrees. now it is just about 2 minutes.

Here is a picture of the collar in place on the chamber.

Phil

PJK: Collar on roaster 1.jpg
(Click for larger image)

 
Philip J. Keleshian
back to top
 View Profile Visit website Link to this post
PJK
Senior Member
PJK
Joined: 21 Jan 2002
Posts: 2,319
Location: Shingle Springs CA
Expertise: I love coffee

Espresso: Rancillo Silvia, Tonic...
Grinder: Modified Rocky, Elma side...
Vac Pot: Old Silex
Drip: Melitta BCM 4  +Some old...
Roaster: Hottop, Modified Z&D,...
Posted Sat Sep 4, 2004, 10:30am
Subject: Re: Z&D Update
 

Here is a shot of the collar off the machine.

Phil

PJK: Collar1.jpg
(Click for larger image)

 
Philip J. Keleshian
back to top
 View Profile Visit website Link to this post
PJK
Senior Member
PJK
Joined: 21 Jan 2002
Posts: 2,319
Location: Shingle Springs CA
Expertise: I love coffee

Espresso: Rancillo Silvia, Tonic...
Grinder: Modified Rocky, Elma side...
Vac Pot: Old Silex
Drip: Melitta BCM 4  +Some old...
Roaster: Hottop, Modified Z&D,...
Posted Wed Nov 9, 2005, 5:34pm
Subject: Re: Z&D Update
 

In response to Stan's intrest in my Z&D  roast control transformer I am attaching a PDF schematic of the concept.

I still plan to make a complete schematic and also post photos.

You can see a picture if you go to the regonal forums- US west- Barefoot roastoffs.  It will be in one of the early posts in that string.

Phil

 Z&D transformer.pdf

 
Philip J. Keleshian
back to top
 View Profile Visit website Link to this post
CoffeeSmurf
Senior Member
CoffeeSmurf
Joined: 10 Oct 2005
Posts: 26
Location: Ohio, USA
Expertise: I love coffee

Grinder: Rancilio Rocky Doserless
Drip: Press pot, Melitta, Krups...
Roaster: Z&D, popper
Posted Fri Nov 11, 2005, 8:30pm
Subject: Re: Z&D Update
 

Wow Phil those are some extensive mods!  Have you considered sharing your ideas with Z&D for their someday next generation roaster?  

Thanks a lot for sharing your ideas and hard work!

Regards,
-Mark-
back to top
 View Profile Link to this post
showing page 4 of 6 first page | last page previous page | next page
view previous topic | view next topic | view all topics
Discussions > Coffee > Home Roast > Z&D Update  
New Topics updated topics   New Posts new posts   Unanswered Posts new unanswered     Search Discussion Board search   Discussion Board FAQ faq   Signup sign up  
Not Logged in: Log In to Postlog in
Discussions Quick Jump:
Symbols: New Posts= New Posts since your last visit      No New Posts= No New Posts since last visit     Go to most recent post= Newest post
Forum Rules:
No profanity, illegal acts or personal attacks will be tolerated in these discussion boards.
No commercial posting of any nature will be tolerated; only private sales by private individuals, in the "Buy and Sell" forum.
No SEO style postings will be tolerated. SEO related posts will result in immediate ban from CoffeeGeek.
No cross posting allowed - do not post your topic to more than one forum, nor repost a topic to the same forum.
Who Can Read The Forum? Anyone can read posts in these discussion boards.
Who Can Post New Topics? Any registered CoffeeGeek member can post new topics.
Who Can Post Replies? Any registered CoffeeGeek member can post replies.
Can Photos be posted? Anyone can post photos in their new topics or replies.
Who can change or delete posts? Any CoffeeGeek member can edit their own posts. Only moderators can delete posts.
Probationary Period: If you are a new signup for CoffeeGeek, you cannot promote, endorse, criticise or otherwise post an unsolicited endorsement for any company, product or service in your first five postings.
Donate to Coffee Kids
Coffee Kids works with farming communities around the world, improving lives. Donate today.
www.coffeekids.org
Home | Opinions | Consumer Reviews | Guides & How Tos | CoffeeGeek Reviews | Resources | Forums | Contact Us
CoffeeGeek.com, CoffeeGeek, and Coffee Geek, along with all associated content & images are copyright ©2000-2014 by Mark Prince, all rights reserved, unless otherwise indicated. Content, code, and images may not be reused without permission. Usage of this website signifies agreement with our Terms and Conditions. (0.340175867081)
Privacy Policy | Copyright Info | Terms and Conditions | CoffeeGeek Advertisers | RSS | Find us on Google+