That drawing I posted is not to scale. The wooden tang of the lever that gets pinned will be much thicker in reality, and probably longer.
Not sure, Bryce, maybe 3". VMB got me to thinking about weight of the levers, which got me to thinking about how much I end up discussing the size of my bow tips because I apparently make them "so much bigger than they need to be and therefore my arrow is slowed down".
If I remember correctly, Tim Baker said that for every extra 60 grns. of tip weight, on the average size and weight bow, arrow speed is reduced about 1 fps.
So I compared some woods today, 60 grns worth, to see how much actual wood that amounts to. Here is oceanspray, hazelnut, fir, oak, two exotics and some antler and that whole stack of stir sticks. This is how much EXTRA wood you would have to add to tips to reduce arrow speed 1fps.
But also it gives me an idea of how much heavier 4" levers would be if made from exotics vs., say, hazelnut. I cut some VM after this pic and it was nearly identical to the hazelnut.