Hello, recently I started on my rough cut mower. It started when I saw a homemade cutter on YouTube. Last week I designed my own mower, and today I picked up a 4’x4’ sheet, 1”x2” channel and rectangle for the build. I got a Briggs Intek engine, an pto mower clutch, a 1 inch 4140 spindle(threaded & key notched) and a 13.75” pulley for the drive system. I designed my drive system similar to the mower below, but for the spindle he used 2 cheap flange bearings. With a mower that cuts small trees it needs to be heavy duty.
Additionally, he only used the 4 bearing set screws to lock on to the spindle. It seems like even with locktite it would work it’s way out over time. I’m thinking of getting some timken flange bearings and notching the spindle for the set screws to hold better. But there’s still the question of how well could the bearings could hold up to the lateral cutting forces. I could put a bronze pushing in the space between the flanges but I don’t know if it would help much.
However, I would rather save the $130 on timken flanges and use the trailer hub bellow. I could probably machine a spindle out of 17-4 but my lathe has a some twist so I’m not sure if it would work out.
Trailer hub: https://m.northerntool.com/shop/too...MImNDP_8_46gIVg4bACh1XYwrWEAQYAiABEgI2jfD_BwE
Clay’s Brush Cutter:
Additionally, he only used the 4 bearing set screws to lock on to the spindle. It seems like even with locktite it would work it’s way out over time. I’m thinking of getting some timken flange bearings and notching the spindle for the set screws to hold better. But there’s still the question of how well could the bearings could hold up to the lateral cutting forces. I could put a bronze pushing in the space between the flanges but I don’t know if it would help much.
However, I would rather save the $130 on timken flanges and use the trailer hub bellow. I could probably machine a spindle out of 17-4 but my lathe has a some twist so I’m not sure if it would work out.
Trailer hub: https://m.northerntool.com/shop/too...MImNDP_8_46gIVg4bACh1XYwrWEAQYAiABEgI2jfD_BwE
Clay’s Brush Cutter:
![8d9441cea1795e359ea125936c7bd23b.jpg](/proxy.php?image=https%3A%2F%2Fuploads.tapatalk-cdn.com%2F20200801%2F8d9441cea1795e359ea125936c7bd23b.jpg&hash=3fb6e1da37ffc18261c0229e819d90c4)
![c51b70de37543f8307059e9dde72638e.jpg](/proxy.php?image=https%3A%2F%2Fuploads.tapatalk-cdn.com%2F20200801%2Fc51b70de37543f8307059e9dde72638e.jpg&hash=a956c6b54b2c93dd7fe259f4a13b2be2)
![78e85b32f2ffb3989ce3bc0d0c630191.jpg](/proxy.php?image=https%3A%2F%2Fuploads.tapatalk-cdn.com%2F20200801%2F78e85b32f2ffb3989ce3bc0d0c630191.jpg&hash=dd61bc74f70ef5d1cbb2c3e20fd4df66)
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