1) I've found that under load the motor bogs down pretty quickly. Speed Control for the Harbor Freight (34706) Wood Lathe. The treadmill motor is mounted onto another piece of thick wooden board. Hi I have a TM Motor with these specs that I hooked up to my wood lathe. I did this by inserting a peice of ¾" wooden board between the table and the lathe bed. Please practice hand-washing and social distancing, and check out our resources for adapting to these times. Cross holes are drilled on the rims, tapped M5 to accept M5 grub screws for fixing onto the spindles. 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. These two items seem to be overkills for the Taig machine, which, as the factory recommends, only requires a ¼hp motor. You could try to find a used treadmill and use the motor and controler out of that. All wooden boards are made from either ¾" thick melanin laminated fibreboard, or plywood board. A little research yielded a cheap solution -- a treadmill motor. Lathe Modification: Variable Speed Treadmill DC Motor. 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. All these however do not bother me at all. For now, I have to read the rpm with an optical tachometer. You need to keep the motor and all the electronics. Lathe Modification: Variable Speed Treadmill DC Motor. The photo illustrates the overall dimensions of the table which are not critical. Also, the controller output of 90VDC max seems not to deliver the full power of the motor at 110VDC. 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. This board is attached to the backside of the lathe table with two heavy duty door hinges. This drive consists of two split pulleys. Power from the motor is transmitted to the lathe with belt and pulley. 5 / 5 ( 2 votes ) 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. 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. Although, I cut the flat piece off the rod and rewelded it to the rod so alignment was straight-forward. How to buy a vintage wood lathe; Free Plans; Bearing Guide; Books; Sunday, November 23, 2014. 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. Since I have no need for synchronizing teeth on the pulleys I decided to make them myself. This proves to be inadequate as it still gives me little room to brush out chips from underneath the lathe bed. I am happy that I have made this modification which allows me to use the lathe easily with more flexibility. 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. The electronic controller does not heat up at all. In order to use this new belt, I needed suitably sized pulleys. In time, I intend to make a built-in sensor and display. Shop with confidence. 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 used a 1.5 HP DC treadmill motor, DC drive controller, and a LED tachometer with Hall effect sensor. Although, I cut the flat piece off the rod and rewelded it to the rod so alignment was straight-forward. 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. May 6, 2013 - Treadmill motor speed control for a 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. 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. I had a 7x12 lathe that I used a treadmill motor and controller on.. The controller is rated at 0-90VDC PWM, 400W maximum output power. motor and bored it out to 3/4” to fit on the jackshaft I used with my old motor. 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. 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 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. DIY CNC projects, 3D printer, Mach3, Cambam, Probotix, CNC how to 31. If not, I can always make a new pulley to gear it up. There is no magic in choosing the height of 1¼" but any shorter will not give the clearance desired. This board is attached to the backside of the lathe table with two heavy duty door hinges. Since the electronics were okay I salvaged the motor and control board. This treadmill lathe mod was thrown together pretty fast with mostly scrap stuff and works surprisingly well. He's using it as a polishing machine for his rock and mineral projects. Is there anything I … 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. I then test turn and cut off a few pieces of steel rod with various diameters. 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. All wooden pieces are put together with #10 wooden screws. Blech! Lathe Modification: Variable Speed Treadmill DC Motor. It may not be a DC motor in which case it won't work. The treadmill motor is rated at 110VDC, 4hp input power, 4200rpm max. Secondly, I can use its weight to tension the belt without the help of tensioners, so that it actually becomes an advantage. Like most households we had an old treadmill that had seen better days and was ready for the landfill. The upper speed seems to be somewhat limiting. 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. Motor Speed Diy Cnc Cnc Projects Circuit Diagram Pinterest Diy Electric Motor Electronics Projects Garage Ideas Treadmill Wood Lathe. Share it with us. The lathe is fixed to the top of a small wooden table with four #10-24 long bolts. The treadmill motor is bulky and heavy. Moving a lever opens and closes the width of the pulleys to change the … When the lathe is not in use, I raise the motor and prop it up with a wooden wedge. In the process, I had to rebuild the lathe table, fabricate two new pulleys, and purchase a new belt. 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. Projects; Blogs; Reviews; Forums; Videos; Shops; Jocks; Sign In or Join Now! The treadmill motor is mounted onto another piece of thick wooden board. Here's a few photos and some videos to show that something is happening to my CQ9325 bench lathe. Reading over the various potential modifications, I decided the DC motor needed to come fairly early in the process for several reasons. When I bought my Taig lathe two years ago, I went through my junk pile and came up with a ¾hp motor. The pulley belt is tensioned by moving and locking the motor closer or further away from the lathe. Although you can buy a cheap rpm speed display in a e-store, I decided that it was more fun to make one. 28:46 . 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. I then raised the motor by swiveling it upwards on its hinges, and put the new 10mm belt onto the pulley tracks. Second, there is a lot of bang for the buck. These were all recommended by a KB Electronics distributor. The Aussie Shed 17,324 views. The Wood … I actually have three questions. I also used them on grinders and polishers. I went from a .5 hp motor to 2.5 with the treadmill it's for sure noticable! Saved from lumberjocks.com. I was usually either going too fast to sand or too slow to turn hardwoods. This allows the motor to be raised and lowered by swiveling around them. 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. It now has VSD (variable speed drive) fitted. 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 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. Lathe Modification: Variable Speed Treadmill DC Motor. 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! Choosing the optimum speed is now easy and the operation is smooth. 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. This removes tension on the belt and gives it a longer service life. Super Contributor; Posts: 1592 ; Country: treadmill motor = lathe? I had a friend that did this and put it on an old Craftsman he had. The motor, as expected, runs cool and provides high torque even at low speed. Switching on the power, I run the lathe from about 100rpm to 3000rpm, changing speed smoothly and continuously at any time. I really wanted to convert our wood lathe to variable speed because there’s a lot of advantages to doing so. I therefore decided to change to a variable speed motor. 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. Treadmill motor speed controller for less than $30 - YouTube This motor has served me reasonably well over these two years. XOIIO. The lathe is now ready to be tested. Mini Lathe DC Treadmill Motor Conversion Part 1 - Duration: 28:46. The motor had a 16mm (.6295In) shaft with the pulley/flywheel held on by a 1/2” 13tpi left hand thread. Harbor Freight Lathe Conversion using a Treadmill Motor - Duration: 34:00. In making these pulleys, I took care to make sure that they run true on the spindles. Once the motor is lowered, its weight provides the tension on the belt. 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. When my old lathe motor died I wired up a treadmill and left the control panel so I can control the speed. Inexpensive belts and XL pulleys can easily be purchased from on-line stores. Treadmill motor speed control for a lathe. 5 / 5 ( 2 votes ) Article by Daniel Edward 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. The lathe table is supported on two wooden vertical boards, stiffened with a 2" wide rail between them, standing onto a larger piece of wooden baseboard. The simplest way to do this is to run an DC motor off an electronic speed controller. Stay safe and healthy. Did you make this project? They are centre bored 16mm to fit onto both the motor and the lathe spindles. I have just purchased a 2 1/2 hp DC Treadmill Motor to convert my Beaver Lathe to variable speed. (Read 7034 times) 0 Members and 1 Guest are viewing this topic. 5 / 5 ( 2 votes ) Dismiss Visit .. I chose them to make use of some scrap boards I had on hand. However, I think that for most purposes it is good enough. I have a DC 130 volt, 2 HP, 17 Amp treadmill motor that I want to use on my wood lathe. It also works very good. Well, I have to make do with what I can get. 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. This allows the motor to be raised and … I have since fabricated a tachometer using the 1602 LCD display driven by a 16F628A pic connected to a A3144 Hall Effect sensor. Two magnets are attached to the inside of the motor fan. See the embedded video clip above. 1.75 HP Continuous Duty @ 90 VDC Amps 15 4200 RPM @ 90 VDC using an MC-60 control board. 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