Mazzer Robur modification - port exit chute?
- Jacob
- Posts: 367
- Joined: 18 years ago
Port & Polish - or just polish?
I'm about to make some sort of doserless mod on my Robur.
As you can see in the picture, the inside of the chute looks pretty rough and I'm planning to polish it up.
In order to reduce clumping I am very tempted to port it as well (keeping the original size and shape at the inner end and tapering it out to an enlarged exit-port).
This is an irreversible mod and I would love to here what you know and think of this before taking action on it.
Will it work? Has anyone actually tried it? Any thoughts?
Thanks
Jacob
I'm about to make some sort of doserless mod on my Robur.
As you can see in the picture, the inside of the chute looks pretty rough and I'm planning to polish it up.
In order to reduce clumping I am very tempted to port it as well (keeping the original size and shape at the inner end and tapering it out to an enlarged exit-port).
This is an irreversible mod and I would love to here what you know and think of this before taking action on it.
Will it work? Has anyone actually tried it? Any thoughts?
Thanks
Jacob
-
- Posts: 143
- Joined: 19 years ago
I've been meaning to do this ( Porting ) for some time. I say go for it and let us know the results. Chances are you will be given a bunch of reasons why you shouldn't but if I had listened to everyone that said it wouldn't work, I would be working at Sbux!
- cafeIKE
- Posts: 4704
- Joined: 18 years ago
How about a couple of close-up photos of the 'chute'?
Ian's Coffee Stuff
http://www.ieLogical.com/coffee
http://www.ieLogical.com/coffee
- Jacob (original poster)
- Posts: 367
- Joined: 18 years ago
There will be before/after pictures.
From someone who knows his stuff - very encouragingterryz wrote:I've been meaning to do this ( Porting ) for some time.
- Randy G.
- Posts: 5340
- Joined: 17 years ago
If you are converting it to doserless I would just leave it and see how that works out before changing the design. Make some cardboard mock-up chutes and see what works best. For example, pointing the chute at a slight angle in the direction the coffee wants to go may do the job without modding the body.
Before you begin with the Dremel, I would make an accurate template to match the original opening so that if things go wrong down the line you can rebuild the original opening shape and size with some sheet metal and epoxy.
Before you begin with the Dremel, I would make an accurate template to match the original opening so that if things go wrong down the line you can rebuild the original opening shape and size with some sheet metal and epoxy.
EspressoMyEspresso.com - 2000-2023 - a good run, its time is done
- Jacob (original poster)
- Posts: 367
- Joined: 18 years ago
I planned to use the doser as the perfect templateRandy G. wrote:... I would make an accurate template to match the original opening ...
I have been playing around with Illy cans before and I did some more tests yesterday.Randy G. wrote:Make some cardboard mock-up chutes and see what works best.
But I don't like the distribution-patterns that I get
Instead of a passive chute I might ad an active 'distributer'
My 2. post on CoffeeGeek was actually a picture of an active mini-chute test (unbalanced and an awful distribution-pattern).
But a wheel of vanes (say 12-24) and a chute that's doesn't taper so much
https://www.coffeegeek.com/forums/espre ... 091#235091
So much for the doserless mod - let's ruin the template
- Jacob (original poster)
- Posts: 367
- Joined: 18 years ago
I extended the bottom of the hole in the doser by 5-6 millimeters, mounted it on the grinder and marked the dosers 'window' on the chute. Then everything was smoothed out as much as possible within the limitations of this window.
This was not enough to get rid of the corner (marked with a red circle on the first picture) and the drop is not steep enough to make any real difference in 'coffee transportation'.
This was not enough to get rid of the corner (marked with a red circle on the first picture) and the drop is not steep enough to make any real difference in 'coffee transportation'.
- Jacob (original poster)
- Posts: 367
- Joined: 18 years ago
- Jacob (original poster)
- Posts: 367
- Joined: 18 years ago
After a couple of days of observation I would have to say that I'm not sure that this porting is a good idea (unless one also creates a very steep slope/drop which would work by gravity alone).
It's like the modified chute just fills up slower, as the grinds seams to try to find a way over the grinds in front until the chute is full. The result is more grinds in the larger modified chute when the grinder is cut off
Maybe static would be a thing to look out for to?
It's like the modified chute just fills up slower, as the grinds seams to try to find a way over the grinds in front until the chute is full. The result is more grinds in the larger modified chute when the grinder is cut off
Maybe static would be a thing to look out for to?