I printed out a Hercus lathe operating manual, It was very good but hasn't helped a lot :)

It might make my videos a bit better :)

Agreed that might help the motor from burning out.

So far it has also worked good on my vintage Karger lathe. (the blue one)

That's probably open to discussion :)

It has some worn tapered steel spindle journals with bronze bearings. But it's still usable bit.ly/2Z9kFUO

I guess we both need an upgrade.

most views these days seem to come form smart-phones. And you really need full hd for a screen the size of a post stamp.

But now the unwanted critters might back.

Some older motors don't do so well with a VFD, especially when the insulation is a bit wonky.

Yeah I need to make that wiring a bit more permanent at some point. But we all know how that goes :)

Well thank you sir.

It's probably a German made Herder knife.

It looked acceptable to me on a 24 inch full hd monitor.

0.75 Kw (1hp) works fine. But some sort of protection against over heating would probably be advisable. I just check the motor temperature with my hands. Usually at slow speeds when running a bigger drill. No problem so far.

No motor, just a box full with electrical bits. Most home used drives are 1 to 3ph but 3 to 3ph is also available

Very interesting. So all that noise comes out of the electrical bits in that box. :)

The actual noise comes from the motor. It acts as a kinda speaker for the carrier frequency of the vfd. The old vfd basically has a slow working computer that is in a better to hear audio range of the human ear.

Very Interesting, Thanks for the explanation.

I agree it had a certain EDM quality :) You given up on youtube?

I bit like that Renault F1 engine they made play some anthem. That would be cool. But I'm not really musically inclined.

Hopefully this one will last a bit longer. I should probably not dig around inside :)

Looked a bit dark after uploading. YT seems to make my videos darker. Not sure I might also be my computer. But playing it online, using a browser. It definitely looks darker the before the upload using a media player. It's driving me crazy!

@@Rolingmetal I like darker photos. More dramatic or something.

Lost of people like more contrast pictures but you loose a lot in details in the shadows.

@@Rolingmetal True.

I should probably read a marketing book someday, I think I kinda suck as a salesman :)

It looked acceptable to me on a 24" full HD monitor. But most people these days stare a a pocket calculator.

VAT (BTW) is 21% over here but you don't need to pay that if you package slips though customs :) Packages below 22 euro are exempt from import an VAT taxes. Up to about 100 euro you only pay some import taxes. Also over the shipping cost. Above 100 euro you get to pay import taxes and VAT. I believe I payed 60 euro including shipping. Might also have been dollars as I used paypal.

So you asking for some sort of "best of" video? That might make the EDM people happy :)

I can make you a compilation video. A best of....

@@Rolingmetal Donate that thing to the Hague. they can use it to torture terrorists with.

That's one thing to consider, but those losses are going to occur in the motor. If it's limited thermal design that's a primary weakness in the cheap VFDs, it might simply be inadvisable due to the fact that raising Fc is going to increase switching losses and also reduce timing margins. I don't know how much I trust the design margins and questionable semiconductors to prevent delayed turn-off and catastrophic shoot-through in the switch bridge -- particularly if the thermal design allows them to run excessively hot.

By default it is set to 10 kHerz and thats probably pretty high already. I doubt it will get much quieter.

240 but it should work the same for 110.

Doesn't change the torque. But a vectoring drive might help a bit at slow speeds.

Zero complaints, and so far I have not been missing the lack of vector control.

My old Allen Bradley sound rather loud on camera. listen and enjoy :) kzfaq.info/get/bejne/mruIjZt0nLuWcXk.html

I though people these days were into EDM.

My motor on the blue lathe got rather hot when drilling at a slow speed. Cooling fan doesn't do much at slow speed. But as long as I'm careful and respect the limitations it should be fine (for a while)

@@RolingmetalI've just bought a 2.2Kw one of these on Amazon for approx. A$90. it's to go with a Deckel D bit grinder package that I want to sell, and as the grinder is 3 phase it will be more saleable with a single phase option too. BTW, your motors will run hot if you run them slow and load them up, they don't like slow running because when the speed drops the amps consumed by the motor will rise to compensate for the slow speed. It's a bit like running a car slowly up hill in top gear and using the accelerator pressed hard down to keep the speed up. I use one of these drives on my small lathe and I run the lathe with a 1:3 reduction belt drive so that when I want a slow speed the motor is still turning over a bit fast. That also keeps some air blowing through the motor. Another solution is to attach a 120mm pancake fan to the motor end so you'll always have a good air supply blowing through the motor at all speeds.

No problem, I can accept that :)

@@Rolingmetal I was making fun of you calling yourself a halfwit. I actually consider you to be very intellegent...I mean ...obviously.

Time to make some more videos

Sorry, but I probably need it again at some point :)

I don expect you would see the difference If you used a smart-phone screen

@@Rolingmetal it is a smart phone. M

glorifiedd pocket calculator!

Nope. And it's probably going to hurt :)