How to figure out max arrow weight for Maxima Red 350 arrows?

[Phorizt]

Just curious as I'm pretty new to this stuff but starting to tinker around with different configurations to see what works and what I feel most comfortable shooting...

Maxima Reds say the 350s are good for up to a 92lb draw weight however from what I understand that depends on arrow weight and length and maybe other factors which they don't specify on their charts. So if I'm shooting 70lbs and 28.5" arrows how do I calculate the max arrow weight I can do in that setup before I am under spined. I don't care about the merits of heavy vs light, just trying to understand how the weight is factored in to that decision. Especially on these arrows when 350 is the stiffest offering. I bought these before I really started learning much about arrows and started tinkering with them.

[Gunnyart]

Member here has the Ranch Fairy youtube channel. Learn you all you'd ever want to know

[Phorizt]

Thanks. I know who the Ranch Fairy is and that the technical term for anything over 300 is a "twizzler"

The Maxima Reds also claim a higher range or poundages/weights than other 340 spine arrows due to the "dynamic spine" or whatever they call it. Not sure if that's just complete BS or what so trying to understand what all goes into it a little more.

[Gunnyart]

Best way I know would be to pick up a test pack of various weight field points and bare shaft tune looking for straight arrow flight and build around the results.

[muddyfuzzy]

Thanks. I know who the Ranch Fairy is and that the technical term for anything over 300 is a "twizzler"

The Maxima Reds also claim a higher range or poundages/weights than other 340 spine arrows due to the "dynamic spine" or whatever they call it. Not sure if that's just complete BS or what so trying to understand what all goes into it a little more.

No, you are correct.......it’s complete BS. Arrow spine is arrow spine it’s always checked across a 28” span with a known/verified weight. The recorded deflection at true center becomes the term “spine” we refer to. That is considered a static measurement and that’s how we refer to it, static. Dynamic spine is how the arrow reacts when the shot breaks as the bow’s stored energy begins to impart force against the arrow. We interpret the dynamic reaction as optimal, weak or stiff depending on indicators such as/but not limited to: bare shaft flight, reading paper and broadhead grouping to name a few. CE has been talking about this dual spine stuff for years now, there is an old Dudley video of him basically proving it’s all marketing talk. This is pre Nock-on John it’s been around for sometime..... there is a reason that no other manufacturers tout this type of stuff, it doesn’t hold water.


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[enewman]

There is a way to test. But you must have a bow press so you can cam lean tune. Then you will test and shoot this arrow and add tip weight. When you reach a nock high you have reached its limit. This is not the ranch fairy method. That method is to manipulate an arrow to match where the bow is set. It’s a method for people that cannot tune a bow. The method I’m talking about is not the same.

If you want to look at it let me know