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