Making a Harbor Freight 4 inch belt sander more useful
ฝัง
- เผยแพร่เมื่อ 1 ต.ค. 2024
- Cheap tools can be made better. It is possible to convert PSC (Permanent Split Capacitor) to CSCR (Capacitor Start Capacitor Run) by adding a solid state start capacitor/relay/overload device. Doing so gives the motor much more starting torque. This extra torque makes the tool useful. But, making this conversion requires knowledge of electrical motors and electrical wiring. This video may not be for everybody.
Here is a link to a video I did several years ago on converting a mostly useless bench grinder into a useful tool. I used this same process by adding a solid state start capacitor.
• Upgrade a bench grinde...
Now, its many days later and I want to add something that I have learned from experience. This relay was not a Supco brand relay. It was a Chinese knockoff. When the motor and relay are cold, this relay holds the start winding in for a full two seconds. The Supco relay on my bench grinder is quicker to release the start winding. I don't think this is a serious problem for the Harbor Freight cheapie motor. However, it's an uncomfortable sound when the motor starts. But holy rotating magnetic field Batman, does it ever start!!
Interresting video. Thanks for the idea. One thing though. Filming with the phone sideways instead of vertical will make the videos much more watchable.
Hi Anthony. Thank you for the comment. Yes, I should do that. If I make a video of the drill press, I shall try that method and get a greater area. The Supco relay for the drill press motor will be here in a few days.
Thanks for the tip. Ive been looking at retrofitting my little craftsman drill press motor with a tread mill motor but this looks cheaper and probably much easier. Thanks Bryan.
Thank you for watching. It has been working well for me. Now, with that said, more horsepower is a better answer (if it's easy to do).
I put a 2 horse motor on mine, had to lift the whole body of the tool off of the base and put spacers in so it would fit 😂, swapped the pulley wheel to a very large one and added one of those link non stretch belts so it's about 2-3 times the original rpm and absolutely impossible to stall, the thing is a terrifying tool now that will tear your fingers off if you get them in the belt area
Ha ha! I like it!! I'm laughing out loud. Thumbs up for sure! The other thing I noticed on the one my son has is how flimsy the metal base is. It deflects a lot because the metal is so thin.
I have on of these, I wish u would have made a video of the process
Hi. Thank you for watching my video. I appreciate it. The HF tool is so much more usable now. Unfortunately, the video is "what can be done" as opposed to "how to do it". Its because it was such a "hack" getting those wires out of the motor. The manufacturer of the motor most certainly does not approve of what I did! I feel its electrically safe. But, probably not the kind of thing that I want to show.
Yes Sir. Great job.great video. Thank you for taking the time to help I guarantee this will help a lot of us on lower side of coins situation. Lol. Like u said some of cheap stuff is ok if u have know how and some is useless . Round disk on sander. Lol. Lot of us have to play with cheaper toys or don't play and when u get cheaper stuff and it breaks u still can't play, not no more. THANKS AGAIN. From ur ole hillbilly buddy
Those relays are great for broken refrigerators
And, they are not terribly expensive either.
You want some alg. Filler comments. I'll do my part and get you few on the video's I watch.
Thanks
So its a hard start capacitor which I get but I'm not sure what adding it would give it more power
Hello James. I hope the video was useful to you! I too do not fully understand exactly how the device works. However, I "feel" the device also adds more run capacitance. But, I don't know that as a fact. I say this because this can be used without a run capacitor. Now, I should do a before and after Amp draw test with my Amp meter. I can positively say that the two motors I have done this to most definitely run better. I've ordered a relay for my drill press. Which will be motor number 3.
Thanks James and best wishes if you do this as well.
Well I thinkthats a hard start kit and It's my understanding it has a relay or something I think potential relay(which I don't fully understand that term either) but what it does is add a larger capacitor for more current to flow thru the start winding but only for as long as it needs which is at most a couple seconds which is what appears the be happening which is why the start up current is so much higher than the run current and you can kinda hear when it's engaged and when it turns off
I'm no expert but I think the capacitor dumps a lot of current on the motor once the relay switch is activated. A bunch of motors have a starter capacitor to kick it into operation.
It gives it more power by storing energy as electrons when you have an alternating current only voltages above 80 or 90 volts provide enough current, electrons to be effective turning the motor.
6.25¹⁸ electrons is 1 Amp. Then think of a voltmeter as speedometer and you have 100 volts that allows you to move electrons at a constant rate let's say you only had a voltage of 50 that would mean that you can only supply half as many electrons the same amount of time voltages under 50 volts have no value turning a motor but they can supply electrons to be stored Either to start or run an electric motor.
During an AC cycle you have half of the cycles under 50 volts supply electrons that are being used but are not really not doing any work so you are using the stored electrons to help start the motor or to keep the motor running it will show up as more amperage, current being used to turn the motor but the motor on its own could not make use of these electrons supplied by lower voltages but by storing them and adding them to the electrons being supplied by a higher voltage they can do more work electrons don't care about how fast they're going some people prefer to think of it as pressure or potential regardless it's how how fast they're coming down the pipe If they're coming twice as fast you can get twice as many in a given amount of time.
Electrons are a physical thing and if 6.25¹⁸ of them past a point in a circuit it is one coulomb or 1 amp. Hell call it a bushel they must be moving to have any ability to do work
Voltage is a pressure that can do no work and cannot exist without electrons moving about think about that for a minute relationships of things really matter an electrons can not move about by themselves without outside influence.
Portrait mode, I'm out.
Hi James. Thank you for the feedback. Sorry. But, you have to at least give me credit for having no music! ha ha I'll make another video of the like soon and will do it in landscape.