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Third day report on mill motor adaptation
Mounting the treadmill motor the way I am doing it has its challenges, because there is no where to secure the mount. I came up with this universal procedure whereby the mount will be secured by stainless T nut straps wrapped around the existing motor and then securing the treadmill motor mount as I will show you in the pictures below. The advantage of this type of install is that it will work for any mill. I had an advantage with this Lagun motor is that the electrical box is cast into the motor casting, so I am using that for stability. Today I bored out the pulleys for the motors and fabricated the mount. I cut out the original mount from the treadmill and sized it to the mill motor and will secure it with T nut straps, I think it will be sturdy enough. The original motor turned at 1825 rpm and I believe this treadmill motor turns at 4800, so I am using a two to one reduction, so I think that will do it, after all, I will have variable speed from the treadmill controller and also the variable speed belt drive on the mill. The Lagun mill was 3 hp and this treadmill motor is 2.25, plenty of power for the way I run my mill. I am not a hotrodder when it comes to milling. By using the original mount from the treadmill, the adjustment design is retained. I am using a 5/8 inch belt and pulleys. The T nut straps were a little difficult to find around Tampa, but I found two around 9 1/2 inch diameter, but they are a little too big, so tomorrow I will fill the gap with some wood planted around the motor to take up the slack. Here are some pics. Robert Brown AKA machiningfoolAttachment 4070Attachment 4071Attachment 4072Attachment 4073
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Motor mount is finished, pictures.
Well, this project went as if I knew what I was doing, unlike some of my other projects. This is the fourth day into the project. The straps worked out well and by using the original mount that came off of the treadmill, it made the adaptation simple. Now all I have to do is reinstall the mill motor into the mill and locate the positions of the controls, so here are some pictures of the treadmill motor installed complete with belt. This installation will work with any Bridgeport type mill. Total cost, pulleys-90.00, belt-10.50, treadmill-60.00, straps-18.00. Two hundred is a lot better than 800.00 to 1200.00, and if this motor goes bad, it's only 150.00. Robert Brown AKA machiningfoolAttachment 4086Attachment 4087Attachment 4088