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Bows / Re: ECHO II
« Last post by Eric Krewson on January 09, 2026, 10:59:00 am »I did not leave the top ring intact, a fatal flaw for sure.
I have a bow drawn out in the VirtualBow program that is an extreme r/d bend in the handle bow:
It has very low stress (90 MPa) at 40 lbs of draw weight and VirtualBow predicts a speed of ~200 fps with 10gpp. Friction will probably eat some of that, but still - there's probably room to stress it a little more.
I like the stress curve and am watching with interest to see how you work out the design with the leafspring idea.
Really cool. I love how narrow you were able to keep the limbs. The performance sounds pretty darn good! Do the limbs mostly contact near the tips of the smaller belly limbs?
That bow looks like a lots of fun Nic! And great execution! My hat's off
I'm glad to see that you decided to post it here. I was the one that sent you the link. I have been doing this for quite a few years and really enjoy seeing 'different' ideas, like yours. You did a great job on it.
Show your support and cast your vote for the 2021 Backed Bow of the Year—every vote counts!Didn't I??

Congratulations Arvin. Hopefully we’ll get to see that full draw picture when you take it to the flight shoot.