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Purpose of inner cam on compound bow?


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Old 07-12-2017, 04:42 PM   #1
BoyntonStu
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Question Purpose of inner cam on compound bow?

Please explain the function of the smaller inside cam of a compound bow?

The outer cam is for the string,

What do the inner cams do?


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Old 07-12-2017, 10:37 PM   #2
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Usually the inner cam is for adjusting and controlling the draw length. If you look at any quality compound bow, the inner cam should look like a half circle with various numbers running along it. Beside each of the numbers, is a hole. There should be a screw set in one of said holes, and the number next to it is the draw length.

It's a lot easier to just showImageUploadedBySlingshot Forum1499898889.438677.jpg ImageUploadedBySlingshot Forum1499899007.663147.jpg


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Old 07-13-2017, 01:33 AM   #3
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Originally Posted by Daedric-Panther View Post
Usually the inner cam is for adjusting and controlling the draw length. If you look at any quality compound bow, the inner cam should look like a half circle with various numbers running along it. Beside each of the numbers, is a hole. There should be a screw set in one of said holes, and the number next to it is the draw length.

It's a lot easier to just showAttachment 37371 Attachment 37372

Thanks, I agree.

On my Barnett Vortex there are 3 anchor points on the main cam. It comes with the string on the middle one. The instructions say the you can add or take away 1" of draw by moving the string to the other position.

On the inner cam there are replaceable modules that adjust the draw length and draw weight. Two screws hold them on. Not as finely adjustable as on your bow.

My question remains, what if the inner cam was removed?

The draw length could be limited by a limb stop and without extra cables.

Am I missing something?
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Old 07-13-2017, 02:40 AM   #4
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It sounds to me like you are talking about a crossbow. If you are then my previous post might be incorrect as I have no experience with crossbows, only bows (recurve/compound).
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