String angle

[DC]

Would the string angle be the red one or the blue one?

[Badger]

   That is really a good question that I have thought about a million times. I am not 100% sure what the answer is. As far as the string coming out of the nock the string angle relates more to the nock area but as far as force draw goes I suspect it is somewhere about 1/2 in between the two depending on the shape of the limb. In this case the bow is not at full draw yet and the recurve is still opening up so I think it would relate more to the contact point.

[PatM]

It's the blue one. That's the main point of the recurve.
 
  Your blue line on the limb side is not marked correctly though.

[DC]

I wasn't quite sure where it should go. In this case should it be wider or narrower?

[PatM]

 It should go to the handle, just like the red one.

[DC]

Like this?

[Badger]

  Each part of the limb is responding to the string angle relative to that portion of the limbs angle. The curve is at a lower angle than mid limb obviously so what ever portion of the curve that is in play will have a lower string angle for that portion.

[DC]

Somewhere in TBB there is a drawing(much better that this) that says that the red angle is the string angle.

[Badger]

   I have seen that before, I still believe every inch of that limb is responding according to its own relative string angle. But when you average it out I imagine that red line would be as close as you could get.

[DC]

This is what bothers me about the whole thing. If you have a leaver and fulcrum it doesn't matter what the leaver is shaped like, it behaves as if it was the red line.Assuming that the crooked line is rigid. Bows unfortunately, bend, and i don't know what that does to the whole system.

[bradsmith2010]

ok how bout this

[Badger]

This is what bothers me about the whole thing. If you have a leaver and fulcrum it doesn't matter what the leaver is shaped like, it behaves as if it was the red line.Assuming that the crooked line is rigid. Bows unfortunately, bend, and i don't know what that does to the whole system.

  Every part of this limb you show here woud be working very differently under a load because it is not rigid. So every inch of that limb would be responding to the string angle according to its own relation ship to it.

[PatM]

You need to draw your red line to the string nock. That drops the string angle a few more degrees.

  Overlay a straightened out version of the same bow to examine the difference.

[Badger]

You need to draw your red line to the string nock. That drops the string angle a few more degrees.

  Overlay a straightened out version of the same bow to examine the difference.

  Pat you draw the line to the first contact point on the limb.

[PatM]

That's way out at the nock at that draw length.