Simple Niche Modifications
capuchin The fact you can plug in a grinder in a 230V AC socket, does not always means that the motor is AC. Anyway you already got many confirmation that the Niche Zero motor is DC.
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capuchin You do know that Dave effectively designed the Niche Zero? Do you not think he knows better than you and the idiot on Reddit matey? Can I ask how many top selling grinders you have designed, just so I can go and take a look at one.
I thought the review linked on Reddit was very positive, he said the build quality was very good and that it doesn’t come much better.
I think his only gripe was the dozing cup which he didn’t like - a very minor issue.
dfk41 You do know that Dave effectively designed the Niche Zero? Do you not think he knows better than you and the idiot on Reddit matey? Can I ask how many top selling grinders you have designed, just so I can go and take a look at one.
No need to attack the guy, correcting him his enough - he clearly didn’t know 👍
It’s a brushed permanent magnet DC motor, designed to run from crudely rectified mains AC - no need for smoothing or speed control which explains why the board is as it is.
Lots of advantages to using this type of motor and very few disadvantages - they are cheap, easily procured in the exact specifications that are required and start up quickly with full torque - minimal ramping. They will be using different motors specified to regional electricity supplies.
Brushless might have been better but I presume Niche in their wisdom have decided that the brushes will last the life of the grinder - and they are not impossible to swap over as a supplied part if and when they fail.
The way people attack others here for perceived slights is astounding. Given that being an AC or DC motor means nothing to you; it’s the same thing, it’s a weird hill to fight on. It’s an electronics discussion relevant to understanding how it works and modification, and makes no difference in everyday use. Yet there are 3-4 replies jumping in excitedly to a conversation not relevant to them, and that they know nothing about and haven’t participated in thus far.
I’ve found the datasheet now, and if Dave wanted to clarify he could easily give the datasheet and the datasheet for the gearbox from chiaphua. I’m sure he didn’t need the sycophantic stuff in any event.
To conclude: It is a dc motor, but weirdly labeled. The HZ value doesn’t belong there at all as DC doesn’t oscillate. The reason for the extra large resistor and huge capacitor is because the bridge would rectify too high, so it needs toned down.
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Gagaryn Aye thanks, found the datasheet and got there in the end. I assume the last bit is a cost thing. The standout feature of this one seems to be its relative size although that does come with the need for more gearing caveat. I’ll leave datasheet and supplier here for completeness.
i was merely supplying you the pics i had, to help
the ‘wow’ was the fact you were kinda arguing with the guy that helped to design it, fwiw i dont think its that motor above, im not really sure if i can say more, so i wont,
Decent De1pro v1.45 - Niche Duo - Niche Zero - Decent is the best machine ever made -
capuchin The way people attack others here for perceived slights is astounding.
I did not attack anybody, so stop creating a false narrative. You might not like the fact that I corrected you….get over it. You come onto the forum announcing your views like the resident expert……when you stick your head above the parapet etc
capuchin The HZ value doesn’t belong there at all as DC doesn’t oscillate. The reason for the extra large resistor and huge capacitor is because the bridge would rectify too high, so it needs toned down.
The Hz value is important because due to the crude rectification the motor effectively runs on ‘pulsed’ DC - there is no smoothing. The big cap is an X2 that is simply there for noise suppression.
that motor is from an old second hand white niche i bought a year or so ago, no ideal on age, the the brush dust blew out.
Decent De1pro v1.45 - Niche Duo - Niche Zero - Decent is the best machine ever made -
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Really sad how much arguing and fairly pointed comments are made on this forum. Seems like every thread I open there a disagreement of done sort somewhere. It’s great that everyone is so knowledgeable but I can see how it could be seen as hostile.
I think there’s a risk of alienating really great people if it hasn’t happened already.
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HarveyMushman thats what the hide/ignore button is for, i cant read half of this thread, infact forum as i hide quite a few users,
Decent De1pro v1.45 - Niche Duo - Niche Zero - Decent is the best machine ever made -
HarveyMushman Really sad how much arguing and fairly pointed comments are made on this forum. Seems like every thread I open there a disagreement of done sort somewhere. It’s great that everyone is so knowledgeable but I can see how it could be seen as hostile.
I think there’s a risk of alienating really great people if it hasn’t happened already.
It’s the world’s friendliest coffee forum I’m told. That seems to be reliant on visitors respecting the “hierarchy of knowledge” and refraining from independent thought. If you obey those unwritten rules, all is fine. Break them at your peril - the resident internet hard man doesn’t take much provocation to swing his handbag. :-)
Gagaryn It’s really frustrating. An echo chamber helps nobody.
@Cuprajake You shouldn’t have to do this though. If people can’t contribute positively and civilly in a friendly and respectful tone, why are they here?
capuchin more for brush arcing from the rectification I’d have thought. The ceramic labeled VR2 would/could be for noise suppression?
No - VR2 is a MOV - a metal oxide varistor placed where it is to provide protection against power surges. This along with the X2 cap are standard components for power inlet protection. If you are modding, leave them in place.