I recently got one of Bigbird's crank mounts for my R10 and I must say that it was money well spent . It puts the crank right where it needs to be for easier access and helps to better balance the bow in my opinion . The crank weighs about 5 ounces so moving that weight from the front makes a noticeable difference . Also a great guy to deal with . I highly recommend the Birdmount to anyone with Ravin .