Glad you brought this subject up, the motor for my Taig heats up ( although not at all similar to your motor) , I never thought of this before, but an info-red cam might show some details previously un noticed. Very nice solution you worked out there, I am sure it will move a lot of heat away from the motor. Enjoyed the video, cheers!

@larrypoindexter9351

3 жыл бұрын

I switched to Sherline motors and speed controls long ago for both my Taig lathe and mill. Even though I never considered it the end all solution. The motors that initially came with both pieces of equipment initially were both unacceptable for my liking. I haven't had problems with the lathe, but for long CNC runs especially during hot summer months I've always felt the mill motor just got way to hot. These type motors do get hot and will continue to run successfully, however. Regards: Larry

Hello Larry, Good video... I have Emco Unimat SL lathe and that gets hot, so this could be a good idea for that... thanks for sharing... Take care. Paul,,

@larrypoindexter9351

3 жыл бұрын

I hope this will give some Sherline or motor owners an idea as to how they might solve the problem if things are getting to hot. The heat sink along may help or just a fan blowing on the motor. Larry

Aluminum is a pretty good transmitter of heat. You're on the right track. I wonder if there is a grease capable of helping transfer the heat from the motor casing to the aluminum, without said heat getting grease so hot it makes the grease drip . Would be nice if Sherline switched to a ribbed motor.

@larrypoindexter9351

3 жыл бұрын

I switched to Sherline motors and speed controls long ago for both my Taig lathe and mill. Even though I never considered it the end all solution. The motors that initially came with both pieces of equipment initially were both unacceptable for my liking. I haven't had problems with the lathe, but for long CNC runs especially during hot summer months I've always felt the mill motor just got way to hot. These type motors do get hot and will continue to run successfully, however. I have considered placing some heat sink type grease between the motor housing and the new heat sink so we'll see what the future brings. Sherline should provide a better case that would better dissipate the heat. Ribbed aluminum would help, although my mini mill has such a case and the heat still worries me. Regards: Larry

One other thing, for the same result might be tried; if you want: wrap the motor with soft copper tubing with also a coil as close to the bearings without interfering with the live output shaft. Connect the piping to a gear pump and an automotive transmission radiator. Use transmission oil, or, since. Cleaners in the oil should be unnecessary, just a simple light hydraulic oil. Shouldn't need the automotive type used for vehicle breaking so as it will be cheaper.) Put a fan on the radiator. You might vary the pump stile; I mentioned gear type as the faster you rotate it the pressure goes up. ( but then you would probably need to include a pressure relief valve.) ( I didn't realize, when I started typing how involved this would get. I am not an engineer, so do not know what danger any of this could develop. Probably scratch gear pump for copper tubing. They say if you hear a peeing sound under your car; do not put your hand near, as if it is from a pinhole in the steal hydraulic piping used with modern type breaking systems, it could kill you by the fluid going through your skin.. I said oil instead of water so as not to create steam in a closed system and blow you and your home away. Wow , things can get involved, but safety is paramount. OR Probably safer: One could use water if the system was not closed. Just run the tubing to a large soup pot of water Enjoy making chips.

@larrypoindexter9351

3 жыл бұрын

We'll see what happen with the temperature during the next long CNC run. Obviously there are better solutions but this time around for a first try I was trying for the simplest build with least cost. Thanks for your comment: Regards: Larry

Nice work! Do you know how much cooler the motor runs now? or tried reversing the fans to push the air across the fins makes any differance?

It's well vented still gets so hot you can't touch the damn thing.

@larrypoindexter9351

3 жыл бұрын

Even well vented motors can get very hot, but these full enclosed motors are terrible. Vented motors with an internal fan that moves air through the motor work best, but are susceptible to accumulating swarf internally which isn't a good thing either especially in metal working. I switched to Sherline motors and speed controls long ago for both my Taig lathe and mill. Even though I never considered it the end all solution. The motors that initially came with both pieces of equipment initially were both unacceptable for my liking. I haven't had problems with the lathe, but for long CNC runs especially during hot summer months I've always felt the mill motor just got way to hot. These type motors do get hot and will continue to run successfully, however. Regards: Larry

The thing you clipped to the motor to act as a heat sink. What kind of metal was it please?

@larrypoindexter9351

3 жыл бұрын

The heat sink is aluminum.

It seems that the washing machine motor on my Taig lathe gets hotter than 120 degrees. I don't have a laser thermometer so I can't check it.

@larrypoindexter9351

3 жыл бұрын

Fully enclosed motors will get hot but some have an outer case that's made to dissipate the heat as does my mini mill motor. Larry

@howder1951

3 жыл бұрын

Same thing on my Taig, I have what looks like an old furnace fan motor.

Did You check that the heat is well enough transfered to the heat sink? If not, just letting the fans blow air to the motor could be even better. 2 fans blowing on one fin looks like overkill to me. Better let them blow at 2 fins.

@larrypoindexter9351

3 жыл бұрын

We'll see what happen with the temperature during the next long CNC run. Obviously there are better solutions but this time around for a first try I was trying for the simplest build with least cost. Of course two larger PC 3" fans moving air across the entire heat sink would be best if needed. Thanks for your comment: Regards: Larry

@Stefan_Boerjesson

3 жыл бұрын

@@larrypoindexter9351 You'll be surprised how much good even a small fan does!

@larrypoindexter9351

3 жыл бұрын

@@Stefan_Boerjesson This was the simplest thing I could think of, so it's a starting point. I have fingers crossed.

@Stefan_Boerjesson

3 жыл бұрын

@@larrypoindexter9351 Well done! It will work well, hopefully as well as You wish.

You said the motor was reaching 120*F. I've been told water over 120* destroys our skin tissue.

@larrypoindexter9351

3 жыл бұрын

I think 120 deg. is okay, but I think at times it gets much more. I will be checking in the future.