A few months ago I have examined the effects of grinding speed. "Mazzer Major with variable grinding speed"

Hi, Your video was very impressive. I bought a Mazzer Robur E few days ago. I also tried this, and I also managed to achieve such results. I didn't do video, but I made some pictures of the results. I've done everything the same as you.{image}

I had the opportunity to compare my grinder with a Hungarian DIY grinder, which name is Combat, and its equipped with a 83 mm Mazzer Robur burr sets. This is a prototype. This grinder speed can be adjusted between 112 rpm and 346 rpm. The best results were archived at about 260 rpm. I was wondering ...

Hi, On my own Mazzer Major I solved the speed control. I needed a single-phase frequency convertor. Follow this link to read about it: "Mazzer Major with variable grinding speed"

Hi, I have been thinking a lot of what is the relation between grinding speed and coffee quality. I have an 220V single-phase Mazzer Major. Its grinding speed is 1400 rpm (50 Hz) . But at this speed everything is suppressed by the citrus flavor at the fruity taste light roasted coffe. Let's look at ...

The single-phase motor doesn't work a "three-phase output" inverter. You will need a "single-phase input - single-phase output inverter

I think the inverter will not affect the life of the engine. It is a completely professional thing. It used in many places in industry. I bought a 0.75 kW version, because it was enough for the major (650W). You will need the 1,1 kW version for the Robur (900W) My inverter cost about $ 260

My grinder is 220V single-phase , and the frequenty converter is single-phase too. (single-phase input - single-phase output). The most type of inverter is "three-phase - three-phase" or "three-phase - single-phase". These are little bit cheaper and more prevalent than the "single-phase - single-pha...

Hi, I'm the guy who changed the speed of the Mazzer Major. I connected a single-phaze inverter to the motor. {video} It can be changed by one tenth between 0-120 Hertz. The goal is to reduced the speed, thus, the part above 50 Hertz (US. 60Hz) does not matter. The frequency may be reduced to 22 Hz