Watch the whole series as I experiment with different motor setups. Watch the grand finale with a VFD when available. Follow me on INSTAGRAM -- mrpete222 Check out my video courses on VIMEO.Com. Search mrpete222
Great demonstration video. Entertaining and educational. The hunt for slow speed large hole drilling continues, it's not the kill, but the hunt that is enjoyable! You videos have say so many of us from following a false trail. Continue educating us. Thank you sir.
Very interesting video Mr. Pete. Like you said 98% of the holes you drill are smaller and in the home shop and this set up is a winner! Thank you for taking the time to show us this.
That was a very informative video. I learned a TON. My hand drills and drill press are mostly used for wood working. Once in awhile I have to drill smaller holes in metal. I never know what speed I should be using. Neverhave drilled anything over a ghalf an inch. At my former place of employment the machine shop had a huge drill press made in Italy. It stood about 8 feet tall, had a huge clamp arrangement for drilling up to 4 inch holes. It had two motors, one was to raise and lower the press and the other who's only job was to power the arbor. Totally amazing. I was always fascinated with this press. That machine shop also had a lathe that was 10 feet in length.
Happiness is the journey, for the destination has no low speed torque! Thanks for yet another great learning experience which already has me looking at relatively 'easy' ways to possibly increase low speed output torque - things like increasing IR Compensation and Current Limit settings on that Multi-Drive...without burning it up (although that'd be great video!). Thanks again for giving us the opportunity to learn!
I believe you can adjust the torque settings internally on those drives, we use them a lot at work here in the plant. they also have max and min speed pots inside as well. we use low speed high torque machines and our KB drives work well. enjoyed the video as usual.
Drilling large holes is one of the most dreaded things I do in my little shop. Thanks for all this high tec info on drilling, very interesting ! I have to start small then sneak up to the larger hole. Good info Mr Pete. Thanks again sir.
👍I like that DC set up on the old Walker Turner. If my WT got more use I'd like to upgrade it & play around a bit, however, it'd be costly. A comment below speaks of potentiometers for motor torque settings inside their DC motors to achieve the plants needs is ideal. I've had to set the "pots" on my garage door opener when new springs were installed due to increased tension. (Up/Down force) Oh well, maybe one day I'll get lucky & run into a DC set up to upgrade.
Thank you Mr.Pete for showing in detail what I found out many years ago as it explains why I was fooled into trying DC for variable speed on a bench drill and why it wasn't a success for me either.I did not go to the lengths with voltage, amps and RPM monitoring you have done in this video simply because I did not have the equipment then. In fact going back over 50 years not many people had access to things unlike today where there is plenty of used equipment by the car load.
Another great teaching video, thank you. After many years of dealing with too high of speeds on drill presses, I found a good deal on a Craftsman 20in dp with 2hp peak motor. It does use the mid pulley set up and will drop down to a low 150 rpm. It has done well with hole saws and 1in drills in mild steel. Its still too fast for tapping and even some large hole saws. I like to spin tools slow, they seem to hold up better.
Very enjoyable, and a good learning experience. When I have to drill a really large hole on my drill press...well...I just don't. I use the mill. Thanks, Mr. Pete! :-)
A bit more work but you'll get more torque by allowing the motor to run faster for the desired speed at the quill. If you went with timing belt pulleys and belt, you could have a much smaller pulley on the motor, and that should improve the available torque at the drill bit.
Great demonstration video. Entertaining and educational. The hunt for slow speed large hole drilling continues, it's not the kill, but the hunt that is enjoyable! You videos have say so many of us from following a false trail. Continue educating us. Thank you sir.
Very interesting video Mr. Pete. Like you said 98% of the holes you drill are smaller and in the home shop and this set up is a winner! Thank you for taking the time to show us this.
Great video Mr Pete, thanks for sharing your latest project!
That was a very informative video. I learned a TON. My hand drills and drill press are mostly used for wood working. Once in awhile I have to drill smaller holes in metal. I never know what speed I should be using. Neverhave drilled anything over a ghalf an inch. At my former place of employment the machine shop had a huge drill press made in Italy. It stood about 8 feet tall, had a huge clamp arrangement for drilling up to 4 inch holes. It had two motors, one was to raise and lower the press and the other who's only job was to power the arbor. Totally amazing. I was always fascinated with this press. That machine shop also had a lathe that was 10 feet in length.
Happiness is the journey, for the destination has no low speed torque! Thanks for yet another great learning experience which already has me looking at relatively 'easy' ways to possibly increase low speed output torque - things like increasing IR Compensation and Current Limit settings on that Multi-Drive...without burning it up (although that'd be great video!). Thanks again for giving us the opportunity to learn!
I believe you can adjust the torque settings internally on those drives, we use them a lot at work here in the plant. they also have max and min speed pots inside as well. we use low speed high torque machines and our KB drives work well. enjoyed the video as usual.
Drilling large holes is one of the most dreaded things I do in my little shop. Thanks for all this high tec info on drilling, very interesting ! I have to start small then sneak up to the larger hole. Good info Mr Pete. Thanks again sir.
👍I like that DC set up on the old Walker Turner. If my WT got more use I'd like to upgrade it & play around a bit, however, it'd be costly. A comment below speaks of potentiometers for motor torque settings inside their DC motors to achieve the plants needs is ideal. I've had to set the "pots" on my garage door opener when new springs were installed due to increased tension. (Up/Down force) Oh well, maybe one day I'll get lucky & run into a DC set up to upgrade.
Thank you Mr.Pete for showing in detail what I found out many years ago as it explains why I was fooled into trying DC for variable speed on a bench drill and why it wasn't a success for me either.I did not go to the lengths with voltage, amps and RPM monitoring you have done in this video simply because I did not have the equipment then. In fact going back over 50 years not many people had access to things unlike today where there is plenty of used equipment by the car load.
I learned a lot, as usual. The concept and the practicality were presented well!
Another great teaching video, thank you. After many years of dealing with too high of speeds on drill presses, I found a good deal on a Craftsman 20in dp with 2hp peak motor. It does use the mid pulley set up and will drop down to a low 150 rpm. It has done well with hole saws and 1in drills in mild steel. Its still too fast for tapping and even some large hole saws. I like to spin tools slow, they seem to hold up better.
I have an old Atlas. I switched to a 1.5 HP 3-phase and a 1 HP KB Electronics VFD. As the pulleys are set I can go from about 10 to 640 RPM.
Great video - thanks. I agree that you can work around the torque issue in exchange for the slower speeds. Nice job!
Interesting experiment anyway. Thanks for the effort.
Very enjoyable, and a good learning experience. When I have to drill a really large hole on my drill press...well...I just don't. I use the mill. Thanks, Mr. Pete! :-)
Very cool! You’ve inspired me to test my Harbor Freight mill/drill with an upgraded 1.75HP TREADMILL motor.
Mr Pete: surely you didn't expect to post a re-motor mod without tedious comment from me.
A bit more work but you'll get more torque by allowing the motor to run faster for the desired speed at the quill. If you went with timing belt pulleys and belt, you could have a much smaller pulley on the motor, and that should improve the available torque at the drill bit.
Thanks for putting the amp meter on there, that was very interesting.
Thanks for sharing that. Yep ... those were both firsts for me.