Fuse replacement -- CX-706

[slow-poke]

I guess the other thing is that I don't really know the details of the motor in CX-706. I would have to disassemble a bunch of stuff to get a look at it.

My understanding is that it is a "1 HP" DC motor, aka 750 watts. (Brushed? Brushless?) I've learned a bit about AC motors but my most extensive experience with DC motors was with a race car set when I was 12! Not helpful! AIUI, the Craftex, PrecisionMatthews, King, etc 10X22 variable speed lathes are all pretty much alike. What powers them?

Craig

The original motor in my CX706 was a 750 W brushed DC motor powered by KBIC type motor controller. I replaced the original motor with a brushless style.

 

[trlvn]

The original motor in my CX706 was a 750 W brushed DC motor powered by KBIC type motor controller. I replaced the original motor with a brushless style.

My front panel fuse, not the one that popped, is labelled 15A. I wonder if the CX706 was revised at some point to use a different speed control system and motor? On another board, a fellow mentioned that his CX706 came with a 10A fuse in the front and 15A at the back--the reverse of mine!

What does "KBIC" mean? Do these motors have a sticker showing the specifications?

The wiring diagram on the back of my machine says "Speed Control Board WEISS". Is WEISS a manufacturer or is this a style of DC speed control? A couple of quick web searches didn't give me a clear answer.

Craig

 

[trlvn]

again, this isn't rocket science.

there is a formula for this and again, you want to protect the machine, not avoid being inconvenienced.

Again, I agree. OTOH maybe there is something else going on? For example, if it was somehow a 50 volt DC motor then it could only get to 750W at 15 amps, right?

Craig

 

[TorontoBuilder]

Again, I agree. OTOH maybe there is something else going on? For example, if it was somehow a 50 volt DC motor then it could only get to 750W at 15 amps, right?

Craig

IF it were a 50v motor then yes to produce 750 watts you'd need 15 amp fuse.

BUT it is not a 50V motor. The standard is to use a 110v motor, and a rectifier bridge to convert 110VAC to 110VDC and then a circuit to either reduce the DC voltage in a brushed motor, or to chop up the 110VDC into pwm signal for brushless motor.

Busybee does not do anything out of the ordinary, they're too cheap and just go with the cheap usual option, so I'd bet $1000 it is not a 50v motor.

The other reason I know this is I've seen all the replacement motors on aliexpress just recently, they dont have your animal... but you are thinking whihc is great

 

[Darren]

I maintain they don't make sense anyplace. The problem in my mind are all the incentives and the life cycle emissions impact.

Plug in hybrids are the answer. Smaller battery with onboard charging from the IC engine, all of the pluses of EV without the drawbacks of pure EV. Plug it in at night and the IC engine will rarely need to start.

Pure EV is not going to work out in the long run for Canada.

 

[Susquatch]

Plug in hybrids are the answer. Smaller battery with onboard charging from the IC engine, all of the pluses of EV without the drawbacks of pure EV.

I'm sort of ok with Hybrids.

But I prefer Plantoline.

 

[Darren]

I drive a Ram 2500 Diesel, and my backup is an 04 Chevy 2500 with a 6.0 gas, but they both have dual batteries, so i'm doing my part to save the planet...right?