Blue Turkish bow (64# at 30")

This is a beautiful bow. Congratulations.

:shock: :shock: :shock: Peter

homemade?

He just borowed it from the museum for testing :D

Well it should be displayed in a museum. :)
Seriously... How many working hours does it take for you Francesco to bring the bow to this finished stage?
I can imagine you must have some kind of diary for each bow that you make.

Alessi,
The workmanship is beautiful and is the design of the decoration excellent.

Dear Francesco, please:
as for the data of arrow speed vs. arrow weight that you provide, are these referred to a 30'' draw length, or other else?

From a plot of 1/(V*V) vs arrow weight, I find that your bow has a virtual mass of 106.5 grains (+- 12.6 grains). The overall kinetic energy of the global system (arrow mass + virtual mass) at the draw length where you have measured the speed data is found to be 68.9 J (+-1.6 J). With the same draw length, the maximum theoretical speed of the nocking point (i.e., its speed in a dry shoot) is 464 +- 20 fps.
Knowing the draw length in question, it is possible to determine also the hysteresis losses. E.g., should this length be 30'', then the hystheresis amounts to -17.5 J (+- 1.6 J), since the total work required to draw the bow up to 30'' is 86.5 J.

The bow is a wonderful piece of work!

Looks so nice! Excellent energy storage! (I usually see the overall energy being the same as a straight line in f-d curves?..)