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.
I'll be sure to post it here if I get to make it. But I probably have to wait for a piece of wood that is clean and straight enough - otherwise it will be a nightmare to balance and align, I think.
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?
I think that is one of the main benefits of this design: It is wide and narrow at the same time!
That bow looks like a lots of fun Nic! And great execution! My hat's off 
Thank you for the kind words simk!
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. 
Thank you bob, I really like r/Bowyer for the great community, but there's just an amount of cumulative experience here that is unmatched anywhere else.
