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Pleeeeease……I am looking for German teams to exchange with…
Yes I tried it and it did work. However, I was only able to run the motor without any load due to early stage of the project. I dont know how much torque the motor has with one phase and whether it’s enough to shred but to me it seemed quite strong. I was not able to stop or slow the motor down by hand.
I only had to buy a capacitor with 150mF (since I have a 2KW motor and you need about 70mF per KW) and wire it up, that’s it.
I will attach a photo….
sorry for my late reply. I thought I had replied already to this thread, but apparently not.
Thanks so much to @flo-2 for your extensive explanations that actually helped me a lot to understand the whole thing.
I went for a 2HP three phase motor now and we yet have to see its performance.
One interesting point that I wanted to share is that in order to test the motor (while not having three phase power available), I tried something out that is called the “Steinmetz circuit”. It is a very smart way to run three phase engines on single phase power. You only need a right-sized capacitor and the wire the engine in the right way, and off you go. Again, we dont have the shredder fully assembled yet so I cannot report about the load it can handle but we got it running and the engine seemed to be strong (was not able to stop or slow it down by pressing a piece of wood against the pulley with force).
If someone needs more information or help setting this up, get in touch with me.
I should have mentioned that the change is from 27mm to 28mm…
Wow, that looks cool.
Thanks for sharing !!!
Have you tried them out? How big and what are the differences?
Do you have CAD-files available for those parts? We are about to order and if these knifes are much more efficient, I would like to go for them of course.
Cheers from Cambodia
Yes, only the shredding unit in the Excel so far.
I am happy to provide it as Excel if someone wants to add more information.
The rest of the parts is in my opinion more easy (not the engine of course) and will probably be made up “as we go”, cause we have to see what is available.
I am also facing a couple of problems with the files while looking for a supplier in Asia:
– some suppliers need older CAD file versions (my brother created files that
– the drawings do not seem to be in 1:1 dimension (at least to one supplier) and I do not have any specifications of how long/wide/deep each part must be
Can someone help me with this?
I’ve already shared the file versions that my brother created, so they should be in 2000er CAD file format and correct (I cannot verify).
Any help is appreciated.
In case you need the files, this is what I got from my brother. Cannot test it, any feedback is appreciated. I just sent it to our potential steel supplier in Thailand. Keep fingers crossed for me 🙂
PLEASE FEEL FREE TO COPY THE FILES TO A PERMANENT ONLINE STORAGE AS THIS DROPBOX LINK MIGHT NOT WORK FOREVER.
thanks a lot for your help, advice and for taking the time to go into detail.
For us the biggest problem is to find a location to run the shredder that has a triphase electrical connection. Getting a new property connected with triphase costs about $2000 or something and is therefore completely out of question.
If I have to go for a monophase engine, can I not just take one that is big/strong enough?
I am sorry but I am not an Engineer, just a logically thinking IT-guy. 3 horsepowers should be 3 horsepowers….no? It is a measure of how strong the engine is, not how efficient it is.
So why does a 3hp triphase motor work well and a 3hp monophase motor does not? Does the monophase not have enough torque? If so, can I not just take a bigger monophase motor to get the torque that I need?
Sorry to bother you with this so much but once I get my head around this it will be much more easy to find suitable solutions.
Thanks for your advice.
Why does the engine guide state in red letters that we should not use monophase?
I dont get it…
Does it only mean that my engine will be bigger to get the same output or are there any other reasons why to not use monophasic?
It seems rather pricey and tricky here in Cambodia to find triphasic engines and power supply….
I would be very happy to go for monophasic but am a bit worried by this advice in the guide doc since we need to have a well-functioning shredder that can run without interruptions.
@davehakkens : what is your view on that?
my name is Daniel and I am part of a team that wants to build a shredder in Sihanoukville, Cambodia.
Project name: Precious Plastics Sihanoukville, Cambodia
Topic URL: https://davehakkens.nl/community/forums/topic/precis-plastics-sihanoukvile-cambodia/
We are based in Sihanoukville, Cambodia and just got a quote from Thailand for about $130 USD (we need to confirm whether they fully understood the order correctly).
We might order 2 sets, 1 for us and 1 for a team in Siem Reap. If we ordered another one and sent it to you we might save costs.
If you want to get in touch please send me an email to [email protected]