[ralphy670]

I have a question regarding Eastons sizing charts. What would a cam &1/2 setup be classifies as. A medium or hard cam. I have the Martin Tru Arc cams. Also what is the difference between a medium and hard cam?
Thanks

 

[Michigander]

The Tru-Arc cams are a medium cam.
A hard cam is one that has a very hard roll over. That is the easiest way to decide on your own.............by how hard the cam snaps out of the valley.
The snap of a hard cam requires a stiffer arrow. A lesser spined or slightly damaged shaft would be in danger of being snapped into pieces more so with a weaker (or lesser spined) shaft. This is one of the biggest reasons for correctly matching arrow spine to your bow.
Todays carbon shafts are built much better than in the olden days, but that danger still does exist. A hard cam can finish off a slightly cracked arrow where a soft cam might not find it so fast.

 

[ralphy670]

Thanks very much for the info. I appreciate it.