Firstly, running a 110V motor from 90V reduces its power by a third, but this still gives me ample power with plenty of margin for the modest requirement of the Taig. My cheap Harbor Freight lathe has served me well for simple turnings but it was a slow and cumbersome process to change the belt settings. In order to use this new belt, I needed suitably sized pulleys. Mini Lathe DC Treadmill Motor Conversion Part 1 - Duration: 28:46. Also, the controller output of 90VDC max seems not to deliver the full power of the motor at 110VDC. The motor had a 16mm (.6295In) shaft with the pulley/flywheel held on by a 1/2” 13tpi left hand thread. Lathe Modification: Variable Speed Treadmill DC Motor. The clearance provided allows me to clean out chips very easily, and a lot of room to wrap my fingers around the cross slide dial handles. It also works very good. Lathe Modification: Variable Speed Treadmill DC Motor. The melanin laminated board is used for the table top, to save me the trouble of painting and protecting it from chips and lubricant when the lathe is used. This allows the motor to be raised and … See the following link (where I used this type of mount for a wood lathe TM motor conversion): Delta 46-715 Lathe Repower #2: Fitting the Driven Pulley and Fabbing Support for Motor and Swivel Bar My set up was from the original treadmill. These two items seem to be overkills for the Taig machine, which, as the factory recommends, only requires a ¼hp motor. The treadmill motor is mounted onto another piece of thick wooden board. I actually have three questions. Since the electronics were okay I salvaged the motor and control board. Speed Control for the Harbor Freight (34706) Wood Lathe. See the embedded video clip above. I am happy that I have made this modification which allows me to use the lathe easily with more flexibility. This treadmill lathe mod was thrown together pretty fast with mostly scrap stuff and works surprisingly well. The controller is rated at 0-90VDC PWM, 400W maximum output power. Thanks for taking a look. Blech! When the lathe is not in use, I raise the motor and prop it up with a wooden wedge. Motor Speed Diy Cnc Cnc Projects Circuit Diagram Pinterest Diy Electric Motor Electronics Projects Garage Ideas Treadmill 5 / 5 ( 2 votes ) I turned a pulley that fit the rear of the spindle for direct drive.. Works real good I now have a treadmill motor running my 9x54 south bend lathe. Wood Lathe. Please practice hand-washing and social distancing, and check out our resources for adapting to these times. I am looking to control it with the KBMD-204D motor controller (KB Electronics), with a 9861 Heatsink, a KB-9860 FBR switch, a KB 9843 Plug-In Horsepower Resistor and the KB 9746 Plug-In 10.0 amp fuse. Author Topic: treadmill motor = lathe? (Read 7034 times) 0 Members and 1 Guest are viewing this topic. I then test turn and cut off a few pieces of steel rod with various diameters. I chose them to make use of some scrap boards I had on hand. The upper speed seems to be somewhat limiting. Stay safe and healthy. Any wobble will, at certain speeds, cause resonant vibrations which degrade the performance of the lathe as well as produce undue wear on the spindle bearings and the connecting belt. The Wood … Second, there is a lot of bang for the buck. Super Contributor; Posts: 1592 ; Country: treadmill motor = lathe? In making these pulleys, I took care to make sure that they run true on the spindles. The pulley belt is tensioned by moving and locking the motor closer or further away from the lathe. The motor is installed at a lower elevation using a longer belt, keeping clear of the lathe bed so its bulk does not really matter. Share it with us. For now, I have to read the rpm with an optical tachometer. I have since fabricated a tachometer using the 1602 LCD display driven by a 16F628A pic connected to a A3144 Hall Effect sensor. The spindle did not quite fit the Taig factory supplied pulley and I had to make it fit, by filing it down with the motor running, and shiming the then undersized result. These were all recommended by a KB Electronics distributor. This motor has served me reasonably well over these two years. In the process, I had to rebuild the lathe table, fabricate two new pulleys, and purchase a new belt. They are centre bored 16mm to fit onto both the motor and the lathe spindles. Did you make this project? Projects; Blogs; Reviews; Forums; Videos; Shops; Jocks; Sign In or Join Now! I had a 7x12 lathe that I used a treadmill motor and controller on.. Two magnets are attached to the inside of the motor fan. This board is attached to the backside of the lathe table with two heavy duty door hinges. However I find it frustrating to be confined to only certain speed settings, to make adjustments to the belt tension and the position of the lathe spindle head all the time, and not be able to fine tune the optimum speed while on the job. The electronic controller does not heat up at all. Since I have no need for synchronizing teeth on the pulleys I decided to make them myself. I also used them on grinders and polishers. I replaced the thin v-belt which came with the Taig lathe with a new 10mm XL-240 timing belt, which provides excellent strength without being unwieldy. Power from the motor is transmitted to the lathe with belt and pulley. These pillars are attached to the lathe bed and the table top, using self locking nuts for the upper threads, and t-nuts for the bottom threads. Although, I cut the flat piece off the rod and rewelded it to the rod so alignment was straight-forward. All wooden pieces are put together with #10 wooden screws. The motor, as expected, runs cool and provides high torque even at low speed. Lathe Modification: Variable Speed Treadmill DC Motor. In this new installation, I made four stand-off pillars, 1¼" tall, with a 5/16" length of #10-24 thread on top, and a ¾" length of 3/8-18 thread at the bottom. Once the motor is lowered, its weight provides the tension on the belt. A little research yielded a cheap solution -- a treadmill motor. This proves to be inadequate as it still gives me little room to brush out chips from underneath the lathe bed. Reading over the various potential modifications, I decided the DC motor needed to come fairly early in the process for several reasons. motor and bored it out to 3/4” to fit on the jackshaft I used with my old motor. Treadmill motor speed control for a lathe. Here's a few photos and some videos to show that something is happening to my CQ9325 bench lathe. Re: Treadmill Motor for a Lathe? It now has VSD (variable speed drive) fitted. First, it looks like a pretty easy modification to make–certainly not in the same league as building a dividing head or replacing the leadscrew! Find great deals on eBay for treadmill motor lathe. XOIIO. In time, I intend to make a built-in sensor and display. The treadmill motor is bulky and heavy. Well, I have to make do with what I can get. I installed the lathe onto the new table with the four steel stand-off pillars and affixed the motor onto the motor mounting board. I installed the electronic speed controller onto one of the side legs of the lathe table, connected it to mains as well as to the motor. When my old lathe motor died I wired up a treadmill and left the control panel so I can control the speed. Like most households we had an old treadmill that had seen better days and was ready for the landfill. Shop with confidence. Choosing the optimum speed is now easy and the operation is smooth. This drive consists of two split pulleys. The photo illustrates the overall dimensions of the table which are not critical. All these however do not bother me at all. Good idea for a polishing type system, not sure about a wood lathe but I suppose it could be a good substitute for a low powered lathe. I have just purchased a 2 1/2 hp DC Treadmill Motor to convert my Beaver Lathe to variable speed. The cross slide rest is one reason I want to keep this old lathe, I can do light machine work with it as well as wood turning. 5 / 5 ( 2 votes ) Article by Daniel Edward I went from a .5 hp motor to 2.5 with the treadmill it's for sure noticable! Inexpensive belts and XL pulleys can easily be purchased from on-line stores. It may not be a DC motor in which case it won't work. How to buy a vintage wood lathe; Free Plans; Bearing Guide; Books; Sunday, November 23, 2014. Every time I moved the belt position on the pulleys to change speeds, I had to move the Taig spindle head and re-tension the belt. This board is attached to the backside of the lathe table with two heavy duty door hinges. May 6, 2013 - Treadmill motor speed control for a lathe. I have a DC 130 volt, 2 HP, 17 Amp treadmill motor that I want to use on my wood lathe. Harbor Freight Lathe Conversion using a Treadmill Motor - Duration: 34:00. The Aussie Shed 17,324 views. This removes tension on the belt and gives it a longer service life. Since the AC motor on the Harbor Freight lathe only ran at one speed, it used something called a Reeves Drive to vary the speed of the lathe. When I first installed the lathe two years ago, I found that I had to prop up the lathe bed to allow more hand room for turning the axles on the cross slide. He's using it as a polishing machine for his rock and mineral projects. All wooden boards are made from either ¾" thick melanin laminated fibreboard, or plywood board. I therefore decided to change to a variable speed motor. I was usually either going too fast to sand or too slow to turn hardwoods. Lathe Modification: Variable Speed Treadmill DC Motor. Although you can buy a cheap rpm speed display in a e-store, I decided that it was more fun to make one. However, I think that for most purposes it is good enough. I then raised the motor by swiveling it upwards on its hinges, and put the new 10mm belt onto the pulley tracks. Rubber padding feet are placed underneath the bottom board to minimize vibration being transmitted to the wooden frame onto which the lathe table is placed and attached. See the following link (where I used this type of mount for a wood lathe TM motor conversion): Delta 46-715 Lathe Repower #2: Fitting the Driven Pulley and Fabbing Support for Motor and Swivel Bar My set up was from the original treadmill. The treadmill motor is mounted onto another piece of thick wooden board. 5 / 5 ( 2 votes ) Secondly, I can use its weight to tension the belt without the help of tensioners, so that it actually becomes an advantage. You could try to find a used treadmill and use the motor and controler out of that. 28:46 . The lathe is fixed to the top of a small wooden table with four #10-24 long bolts. I managed to get a used treadmill motor off the second-hand market, and to purchase a Chinese variable speed controller both at a very reasonable cost. It also means that the motor will be drawing a smaller current and be running cold, giving it a better service life. I put the new pulleys onto the motor spindle and the lathe spindle and fixed them with the grub screws provided. Moving a lever opens and closes the width of the pulleys to change the … The lathe is now ready to be tested. I had a friend that did this and put it on an old Craftsman he had. The treadmill motor is rated at 110VDC, 4hp input power, 4200rpm max. If not, I can always make a new pulley to gear it up. Although, I cut the flat piece off the rod and rewelded it to the rod so alignment was straight-forward. You need to keep the motor and all the electronics. Switching on the power, I run the lathe from about 100rpm to 3000rpm, changing speed smoothly and continuously at any time. I used a 1.5 HP DC treadmill motor, DC drive controller, and a LED tachometer with Hall effect sensor. Variable speed lathe using a DC treadmill motor My 1958 Craftsman lathe came with a 1/3 HP AC motor and changing speeds meant stopping and switching the belt to another pulley. There is no magic in choosing the height of 1¼" but any shorter will not give the clearance desired. I did this by inserting a peice of ¾" wooden board between the table and the lathe bed. Is there anything I … Dismiss Visit .. Treadmill motor speed controller for less than $30 - YouTube When I bought my Taig lathe two years ago, I went through my junk pile and came up with a ¾hp motor. Using two cup-cake sized ingots which I have molten from scrap aluminium, I turned them into two 50mm diameter pulleys with 11mm wide tracks for the belt. The simplest way to do this is to run an DC motor off an electronic speed controller. Saved from lumberjocks.com. Hi I have a TM Motor with these specs that I hooked up to my wood lathe. DIY CNC projects, 3D printer, Mach3, Cambam, Probotix, CNC how to 31. This conversion is great for light to medium turning, but heat rise in non SCR rated DC motors like this is a problem when pushed hard. I really wanted to convert our wood lathe to variable speed because there’s a lot of advantages to doing so. Having fabricated the table and the pulleys, I disassembled the original setup. 1) I've found that under load the motor bogs down pretty quickly. 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