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Rancilio Rocky Timer-Mod part 4 Mod2

by Updated: Sep 19, 2025diy-coffee2 comments

Avi's Rocky Timer-Mod mod2 image 1

Index of Rocky Timer-Mod posts:

Introduction | Disassembly | Mod1 | Mod2
Buy Rocky Timer-Mod eBook

Avi's Rocky Timer-Mod

My way to a better coffee...

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While doing this mod I was disturbed by Rocky’s chute that is so ‘well designed’ that you can’t end a grind session without a trail of coffee grinds all over.
This was solved very easily by using part of a small plastic funnel. No coffee spills now, but it raised a new issue with the portafilter support. This could not be used with the funnel because of height differences.
Avi's Rocky Timer-Mod mod2 image 1
Avi's Rocky Timer-Mod mod2 image 2
I ended up lowering the portafilter support by drilling 2 new holes and transferring the existing fork holder sleeves to the new holes.

Now I can trigger the timer while portafilter sits on its holder and no coffee is spilling due to the use of this small funnel addition. To close the old holes, I used dome plugs.

Avi's Rocky Timer-Mod mod2 image 3
Speaking of hole plugs, Rocky’s hopper is fixed to the upper grinder disk with 3 screws that are assembled through a plastic part with sleeves for the screws.
The screws are located deep in the sleeves leaving enough room for beans to get stuck in it. While using Rocky, those sleeves store some beans that get stuck in it and when you come to disassemble the hopper for cleaning, you need to spend time taking out those stubborn stuck beans in order to get to the screws.

So, why not close those sleeves with plugs as well?
That’s what I did and solved this issue easily.

I just can’t understand why Rancilio engineers never thought of a solution for this annoying problem they have created.

Avi's Rocky Timer-Mod mod2 image 4

Avi’s Rocky Timer-Mod mod2

Modified Rocky general view

Avi's Rocky Timer-Mod mod2 image 5

Avi’s Rocky Timer-Mod mod2

Modified Rocky top view

Avi's Rocky Timer-Mod mod2 image 6

Avi’s Rocky Timer-Mod mod2

Modified Rocky rear view

Avi's Rocky Timer-mod image 7

Rocky MD40 grinder before modding

Rocky MD40 grinder before modding

Modding Rocky made my grinding process consistent, easier, more comfortable, cleaner, safer and very accurate.
No more guessing! 15 gram is exactly 15 gram on each session.

Enjoy your coffee
Avi

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Index of Rocky Timer-Mod posts:

Introduction | Disassembly | Mod1 | Mod2
Buy Rocky Timer-Mod eBook

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2 Comments

  1. David
    David on February 15, 2020 at 00:04

    Hi, Great mod for the used Rokcy i just bought:)
    Do you know where can I buy the small dome covers for the old fork holder holes and the hopper screws holes?
    Thanks

    Reply
    • Avi Schneor
      Avi Schneor on February 15, 2020 at 09:10

      Thanks David
      Search for panel plugs at electronics/electric suppliers as it serve to cover holes of electronics products.
      Good luck

      Reply

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Disclaimer

1. Rocky runs on high voltage.

Any modification made to your Rocky may cause damage to your equipment and harm to yourself or to others. 
Any modification made to your Rocky will void manufacturer warranty.
None of the following mods is recommended by me nor by the manufacturer, Rancilio. 
These pages show only my personal experience and know-how.
If you follow any of the mods, you do it on your own risk and responsibility.

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