i need to know what the spine is on a 27 3/4 in (from throat of the nock) easton xx75 camo hunter 2013. i also need to know what length of gold tip 35/55 trads has the same spine.      :confused:  

SORRY OUT OF TOWN AND I CANT FIND THE INFO ANYWHERE

OK I FOUND THAT THE EASTON SHAFT HAS A SPINE OF .610

The gold tip 35/55 has an advertised static spine of 0.500.  I would bet that the spine is actually stiffer than that.  Also remember that a lighter arrow will shoot stiffer than a heavier arrow.  Wouldn't it be nice is there was some simple formula to calculate dynamic spine?  There are just too many variables and the simple formulae never seem to work well.  I would suggest starting with a heavier point and at least a couple of extra inches of arrow length.  Just as a point of comparison, my bow is tuned with a 30.5" aluminum arrow with a 75 grain point.  I started with a 0.53 carbon and still needed an additional 2 inches in length and 50 grains more point weight.

I had about the same problem and had to shoot full length 3555's with 145gr,pts. to equal spine of my 27 in 2013's. There are now a few .600 spine arrows on the market. But, beware of shooting to light of an arrow in a traditional bow.