For solid shaft gearboxes that are keywayed @noorbeast suggests the easiest way to attach a lever is to grab the correct sized and length Mild Steel, Black Oxide Plating Rigid Couplings, which have the keyway and grub screws, and just weld the lever on the end: http://www.xsimulator.net/community/threads/using-chinese-actuators.7304/page-3#post-86033
![[IMG]](proxy.php?image=http%3A%2F%2Fwww.xsimulator.net%2Fcommunity%2Fproxy.php%3Fimage%3Dhttp%253A%252F%252Fecx.images-amazon.com%252Fimages%252FI%252F216eLpqhf2L.jpg%26hash%3D81fc0e4539603322dc34a4526bce9980&hash=d595658a5692c769fc7c7dd9a37c1bef)
Another option for solid shaft motors are these bolt on flanges: https://www.robotshop.com/nl/en/14mm-set-screw-key-steel-hub.html
As @Nick Moxley explains with hollow shaft motors you can use the correct sized threaded rod through the hollow shaft and weld nuts to it to secure the levers: http://www.xsimulator.net/community/threads/using-chinese-actuators.7304/page-2#post-85902
![[IMG]](proxy.php?image=http%3A%2F%2Fwww.xsimulator.net%2Fcommunity%2Fproxy.php%3Fimage%3Dhttp%253A%252F%252Fi150.photobucket.com%252Falbums%252Fs102%252Fdavidmoxley123%252FSim%252520Racing%252Fpreview_image_0_95824982x_zps95a8003b.jpg%26hash%3De4346fcdf75c07dcdb7aee822626a6f5&hash=df7c52693e5dde2cb283836d5ff1da07)