I've just managed to confuse myself about the effect of riser deflex on brace height. I own a Fiberbow, which is generally stated as having about half an inch of deflex compared to 'normal' risers and it is also said that this means brace height should be half an inch more than for a normal riser. i have just measured the riser and a Samick Masters riser and found that the pivot point of the grip on the Fiberbow is about 10mm closer to the line between the limb pockets than is the case for the Samick. This is consistent with the Fiberbow being more deflex than normal.

Now, since brace height is measured from the pivot point to the string, and the pivot point is clearly closer to the string to start with, then surely the brace height must be smaller, not larger for a deflexed riser assuming the same limb angles.

Am I on the wrong track with this? Is the extra brace height meant to somehow compensate for the deflex distance?

Any help would be appreciated before I start making new strings to get the 'right' brace height.

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