I'm guessing that not ALOT of folks haven't taken apart a brush hog gear box/T-blade mount but many use a tapered spline. I can't imagine that a prop could see any worse shock loads than my brush hog has seen (that is 25 years old) and has NEVER has been apart... THe shock of hitting a big stump or a basketball sized rock that is hiding in the tall grass with a brush hog is enough to shake your teeth out at the roots, and yet it stays together (they do have a dry clutch disk coupling on the gearbox output but are usually very rusty/crusty/TIGHT)...
Need to get the engineer from "Brush HOg" to do some moonlighting and tap into what he/they know... (fit/finish/clearances/material)
I guess a taper/key design goes back a LONG LONG time to days where you wanted a shear to take place if there was too much force/shock/mud/rope/kelp/rocks impeding the prop...??? I dunno, just speculating...
Keep in touch Steve O... I'm looking forward to a visit with your crew at Long Beach which is JUST around the corner sir... I'm sure I will be grilling something so look me up (on the dark side of the stadium)...![]()
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