Bachmann Accu Drive

The Bachmann Accu Drive

Both the BT Wedge and the New Levy tools have the Bachmann Accu Drive customization option.

The Bachmann Accu Drive Numeric System consists of etched numbers on the mid body with an indicator mark on the base that allows you to dial in the depth of your New Levy tamp and BT Wedge distribution tools.


Setting the Bachmann Accu Drive:

  • Zero out the tool by holding the center body and loosening the top grip. Then screw the base of the tool clockwise towards the middle until you cannot turn it any further; aligning the indicator mark on the bass with the zero mark on the center body.
  • From zero, with the top grip loosened, turn the base counterclockwise, outward from the middle of the tool to set your depth.
  • For example: If you want to set your depth at 32 you would first zero out the tool, then, turn the base counterclockwise 3 full rotations +2.
  • There are 10 incremental steps per one full rotation. Each numerical step, changes the depth of your tool by 0.125mm, with a depth ranging between 5mm (minimum) and 14mm (maximum).
  • Once you have your base indicator dialed into the depth number that you desire, clamp the setting into place by tightening the top grip of the tool clockwise until it won’t turn any further, locking it in for rigorous use.


Using the Bachmann Accu Drive to dial in espresso:

The New Levy and BT Wedge are designed to provide consistency and accuracy in the espresso process. By dialing in espresso with your Accu Drive numeric system, you will be pulling consistent shots all day long, regardless of who is on bar.


At what setting should I start with?

We commonly start the BT Wedge at a setting of 12. If your grounds are flat after using the BT Wedge, without bumps or holes on the surface of your espresso, the tool has performed its job properly.

While using the BT Wedge, you do NOT want to put any unneeded pressure on your espresso grounds before tamping. The BT wedge’s job is simply to distribute the grounds evenly across the surface of your basket before using your New Levy for the final tamp.

  • After using the BT Wedge, if your espresso grounds aren’t completely flat or there are visual holes on the surface where the tool did not reach: extend the depth of your tool by turning the base counterclockwise until the wedge creates a completely flat bed of espresso after use.

After the espresso grounds have been evenly distributed in your Portafilter basket, it is time to use the New Levy Tamp. We commonly start the New Levy on a setting of 32. As you tamp, you should be able to feel the density of the espresso beneath the tool as you apply pressure until the edges of the Tamp meet the rim of your Portafilter basket for a completely flat and even puck density. 

  • If your espresso pulls too quickly, and/or channels, this likely means that your espresso didn’t have enough puck density. after considering a finer grind size, next consider the depth/pressure of your New Levy tamp.
    • To increase puck density using the New Levy Tamp, extend the depth of your tool by turning the base outward/counterclockwise to match the density standard of your espresso grind.
  • Conversely, If you find your espresso pulling too slowly, this likely means you have too much puck density. After considering a coarser grind, next consider the depth/pressure of your tamp.
    • To decrease puck density using the New Levy Tamp, decrease the depth of your tool by turning the base inward/clockwise to match the density standard of your espresso grind.

You can rest assured that your espresso is in good hands while using the Bachmann Accu Drive Numeric System. The numerous variables that once vandalized your expensive coffee will no longer be a factor in the espresso process as you streamline the distribution and puck density of every espresso shot you pull.