Ive never gotten any torque out of dc treadmill motors. Used all the way up to 3hp rated treadmill motors with various speed controllers and pulleys and flywheels.. either it will take forever to get up to the slower speed with a big weighted flywheel or itd just bind up and stop the motor at lower speeds. If i used a bunch of gearing it might work but having to align all that on any kind of budget just kills the project for me.. tried bandsaws and drill presses but both require lower speeds for metals and its just too much to get the torque out of em..
Well done. You certainly deserved to have it work out the way you wanted given the amount of effort you put in. Could I ask the diameter of each pulley and did you say the motor rpm is about 3500 please? I have hearing issues and couldn't get some of this info. Cheers
Hello, thank you for your comment. I'm sorry, I didn't see it til this morning. The DC motor is 3750 rpm, 100 volts, 29 amps, 3.0 hp. It came from a mid-level treadmill. The pulley sizes are 1-3/4" on the motor to 5.00" driven on the first stage. Then 1-3/4" driving on the first stage to 6" driven on the second stage. Then 1" driving on the second stage to 8" driven on the side of the band saw. I don't think the speed controller is giving full power, and speed, to the motor, but its range of speed works for what I need it to do, so far.
It's doing great! Only issue I have is getting enough tension on the pulleys to keep the blade from stopping, because it runs so slow. I may add a tensioner on it later this Spring.
Hello Mr Bravo, It would be most helpful if you could list part numbers and links to the purchased items. Maybe a schematic or two? This is a very informative video otherwise. Thanks!
Tachometer : www.amazon.com/gp/product/B01FQMI18Y/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1 Speed controller video : th-cam.com/video/T22pJMIAIRQ/w-d-xo.html Stainless Rod : www.amazon.com/Diameter-Stainless-Steel-Length-Extruded/dp/B074KHN4GV/ref=sr_1_8?crid=3BTMWXV1XUBJA&keywords=1%2F2%22+precision+stainless+rod&qid=1642797999&s=industrial&sprefix=1%2F2+precision+stainless+rod%2Cindustrial%2C48&sr=1-8 Pillow bearings : www.amazon.com/PGN-UCP201-8-Mounted-Bearing-Aligning/dp/B07MWBY7N9/ref=sr_1_3?crid=25TVMSNOH3IZL&keywords=1%2F2%22+Pillow+block&qid=1642798143&s=industrial&sprefix=1%2F2+pillow+block%2Cindustrial%2C61&sr=1-3 Pulleys from Amazon, eBay, and Tractor Supply. Link belt from Harbor Freight. JV microgroove belt came off the treadmill I disassembled. V drive belt from Oreilly's Auto Parts. 5/8" threaded rod and nuts from Lowes. I hope this helps. Those speed controllers and rectifiers are all over Amazon and eBay.
Does the size of the choke matter I got one out of a treadmill and it looks like it's about four times the size of anything that you have posted on your videos
Hey Dave; this setup doesn't have a choke on it. I've been talking with DazeCars, and he says they should be used to extend motor life. I plan to upgrade all these components to a higher grade SCR, a better bridge rectifier, and then a choke to the leads going to the motor. I plan to do that on my bandsaw, my 12" lathe, and my little 6" lathe all of which have been converted to treadmill motors. DazeCars has some excellent videos and guides to doing this, based on his experiences and knowledge.
@@JohnnieBravo1 thanks if you talk to him ask him if size matters the one I have is quite large in comparison to the one that he put in his video maybe size doesn't matter
Hey Dave; Dazed has a new vid up now, and I took the opportunity to pose your question this morning. He says that although he does not know the exact calculations on choke vs motor size, his experiences are, that on one of his machines he has a baseball size choke and it works great. On another machine he has one about the size of a softball, and it works better. So from this, it appears that on chokes, size does matter. I hope this helps.
Thanks for your suggestion. I'm learning, and experimenting, so I used what I had laying around. I might do better using an AC motor, with a VFD, but I don't have any of those. I'm a much better designer/fabricator, than an electrical motor guy, so I was outside my area of expertise on this one. It definitely could use some power enhancements, but so far it's doing what I need it to. Thanks again for your good comment.
@@JohnnieBravo1 Just thought you might want to save/protect your DC motor for a longer running experience with adding some extra parts like choke, capacitor.
Ive never gotten any torque out of dc treadmill motors. Used all the way up to 3hp rated treadmill motors with various speed controllers and pulleys and flywheels.. either it will take forever to get up to the slower speed with a big weighted flywheel or itd just bind up and stop the motor at lower speeds. If i used a bunch of gearing it might work but having to align all that on any kind of budget just kills the project for me.. tried bandsaws and drill presses but both require lower speeds for metals and its just too much to get the torque out of em..
Hello I have the same bandsaw and trying to convert it to a metal bandsaw with your setup I think I can do it Great video 👍
How much it cost to do
Well done. You certainly deserved to have it work out the way you wanted given the amount of effort you put in. Could I ask the diameter of each pulley and did you say the motor rpm is about 3500 please? I have hearing issues and couldn't get some of this info. Cheers
Hello, thank you for your comment. I'm sorry, I didn't see it til this morning. The DC motor is 3750 rpm, 100 volts, 29 amps, 3.0 hp. It came from a mid-level treadmill. The pulley sizes are 1-3/4" on the motor to 5.00" driven on the first stage. Then 1-3/4" driving on the first stage to 6" driven on the second stage. Then 1" driving on the second stage to 8" driven on the side of the band saw. I don't think the speed controller is giving full power, and speed, to the motor, but its range of speed works for what I need it to do, so far.
@@JohnnieBravo1 Thank you for your reply. Cheers mate.
Hows the saw holding out
It's doing great! Only issue I have is getting enough tension on the pulleys to keep the blade from stopping, because it runs so slow. I may add a tensioner on it later this Spring.
@@JohnnieBravo1 what's the estimate it cost to do that
Hello Mr Bravo, It would be most helpful if you could list part numbers and links to the purchased items. Maybe a schematic or two? This is a very informative video otherwise. Thanks!
Tachometer : www.amazon.com/gp/product/B01FQMI18Y/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1
Speed controller video :
th-cam.com/video/T22pJMIAIRQ/w-d-xo.html
Stainless Rod : www.amazon.com/Diameter-Stainless-Steel-Length-Extruded/dp/B074KHN4GV/ref=sr_1_8?crid=3BTMWXV1XUBJA&keywords=1%2F2%22+precision+stainless+rod&qid=1642797999&s=industrial&sprefix=1%2F2+precision+stainless+rod%2Cindustrial%2C48&sr=1-8
Pillow bearings :
www.amazon.com/PGN-UCP201-8-Mounted-Bearing-Aligning/dp/B07MWBY7N9/ref=sr_1_3?crid=25TVMSNOH3IZL&keywords=1%2F2%22+Pillow+block&qid=1642798143&s=industrial&sprefix=1%2F2+pillow+block%2Cindustrial%2C61&sr=1-3
Pulleys from Amazon, eBay, and Tractor Supply. Link belt from Harbor Freight. JV microgroove belt came off the treadmill I disassembled. V drive belt from Oreilly's Auto Parts. 5/8" threaded rod and nuts from Lowes.
I hope this helps. Those speed controllers and rectifiers are all over Amazon and eBay.
@@JohnnieBravo1 do you have a link to the pulley? I can’t find one.
@@jaredwilliams5252 which pulley are you asking about? There are six of them in this setup
Does the size of the choke matter I got one out of a treadmill and it looks like it's about four times the size of anything that you have posted on your videos
Hey Dave; this setup doesn't have a choke on it. I've been talking with DazeCars, and he says they should be used to extend motor life. I plan to upgrade all these components to a higher grade SCR, a better bridge rectifier, and then a choke to the leads going to the motor. I plan to do that on my bandsaw, my 12" lathe, and my little 6" lathe all of which have been converted to treadmill motors. DazeCars has some excellent videos and guides to doing this, based on his experiences and knowledge.
@@JohnnieBravo1 thanks if you talk to him ask him if size matters the one I have is quite large in comparison to the one that he put in his video maybe size doesn't matter
@@JohnnieBravo1 or the bigger the better
Hey Dave; Dazed has a new vid up now, and I took the opportunity to pose your question this morning. He says that although he does not know the exact calculations on choke vs motor size, his experiences are, that on one of his machines he has a baseball size choke and it works great. On another machine he has one about the size of a softball, and it works better. So from this, it appears that on chokes, size does matter. I hope this helps.
@@JohnnieBravo1 thanks for your replies guys I have one about the same size as in his video and one probably twice the size
May I suggest to look up YT'er DazeCars and build a better DC motor controller for your band saw.
Thanks for your suggestion. I'm learning, and experimenting, so I used what I had laying around. I might do better using an AC motor, with a VFD, but I don't have any of those. I'm a much better designer/fabricator, than an electrical motor guy, so I was outside my area of expertise on this one. It definitely could use some power enhancements, but so far it's doing what I need it to. Thanks again for your good comment.
@@JohnnieBravo1 Just thought you might want to save/protect your DC motor for a longer running experience with adding some extra parts like choke, capacitor.