throwing a large asah top over a maple

Jem4417

Well-Known Member
#2
Videos are tough to show it but I've seen that work and fail. Looks like it went how you wanted to. Great video
 
#4
Dan
How far did that top travel?
Was your notch made with 4 or 5 kerfs of the saw instead of a 2 cut notch?
Seems to me the kerf cuts would make a taller hinge (more flex and hold) and not launch the top as well as a narrow narrow trad face cut?
Maybe with the dead ash you needed it to hold on a bit?
 

Daniel

Well-Known Member
#6
I forgot to measure it for the video. Next day went back and walked off 19' from the divot to the stump.... I don't put a deep face on to throw a top, as I think that the more forward the hinge, the more forward the top has to travel before separation. Just a theory though, but it seems to work .... Any humboldt around 15-20 degrees will generally be the sweet spot... On this one the original cut was a little narrow, so i widened it with a second bottom cut to widen it out a bit... Meaning it was a bit sloppy, but worked well eventually. Left the hinge a little thick so I could exit without concern that the top would go with a gust of wind... A thick hinge can stall the top on the hinge, which will shorten the throw, but in the case of dead ash, and that much top leaning out 15-20 degrees before the notch closed, even a hinge that big didn't slow the top down much .... if that all makes sense...
 

Daniel

Well-Known Member
#8
That's the thing about tree work.. it always keeps you on your toes... there is always room for improvement and it's fun using a little creativity to find the fastest, easiest and safest way to accomplish a mission... After 35 years I still love it!
 
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