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GEN 1 (2010-2014) Ford SVT Raptor Forums
Ford Raptor Suspension Discussion and Modification
How To: Adjust the Fox Shock Perch / Height / Level the Front
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<blockquote data-quote="mictouch" data-source="post: 129658" data-attributes="member: 2514"><p><strong>FOX Bypass Shock</strong></p><p></p><p>The easy way to explain it is (without being too technical) there are bypass holes inside the shock. The holes are in a bypass tube that drops inside the shock. See Picture below. The Piston on the shock shaft with the valving passes these holes and as it goes though its stroke and the holes allow some shock oil to bypass the valving on the piston which makes the ride softer until it passes each hole. After it passes each bypass hole it become significantly stiffer. Once it passes the last bypass hole it forces the oil to open just the piston valving instead of bypassing. So, each hole the piston passes means more and more oil has to go though the valving verse being bypassed and this increases the dampening more and more. </p><p></p><p>I hope this make sense - if you are still with me then maybe this will help you understand that moving up a notch up on the spring perch compresses the spring that much more through its travel. This increases the spring rate which lifts the front of the truck. The shock is still the same overall length when fully extended but with more preload the shock at ride height it is more extended and this means the piston is a little further from the first bypass hole, thus making the dampening a bit softer. Not to confuse things but the internal bypass holes are still bypassing at the same rate as when the spring rate was softer. </p><p></p><p>The first picture shows the bypass tube inside the shock.</p><p></p><p>[ATTACH=full]185684[/ATTACH]</p><p></p><p>The second picture is one side of the internal Bypass Tube with (what we call the "Butterfly" valve shims).</p><p></p><p>[ATTACH=full]185685[/ATTACH]</p><p></p><p>The third picture is with the Butterfly Shims removed so you can see the Bypass holes. Also note the replenishing holes for the oil to have a place to go as it goes through its stroke.</p><p></p><p>[ATTACH=full]185686[/ATTACH]</p></blockquote><p></p>
[QUOTE="mictouch, post: 129658, member: 2514"] [b]FOX Bypass Shock[/b] The easy way to explain it is (without being too technical) there are bypass holes inside the shock. The holes are in a bypass tube that drops inside the shock. See Picture below. The Piston on the shock shaft with the valving passes these holes and as it goes though its stroke and the holes allow some shock oil to bypass the valving on the piston which makes the ride softer until it passes each hole. After it passes each bypass hole it become significantly stiffer. Once it passes the last bypass hole it forces the oil to open just the piston valving instead of bypassing. So, each hole the piston passes means more and more oil has to go though the valving verse being bypassed and this increases the dampening more and more. I hope this make sense - if you are still with me then maybe this will help you understand that moving up a notch up on the spring perch compresses the spring that much more through its travel. This increases the spring rate which lifts the front of the truck. The shock is still the same overall length when fully extended but with more preload the shock at ride height it is more extended and this means the piston is a little further from the first bypass hole, thus making the dampening a bit softer. Not to confuse things but the internal bypass holes are still bypassing at the same rate as when the spring rate was softer. The first picture shows the bypass tube inside the shock. [ATTACH=full]185684[/ATTACH] The second picture is one side of the internal Bypass Tube with (what we call the "Butterfly" valve shims). [ATTACH=full]185685[/ATTACH] The third picture is with the Butterfly Shims removed so you can see the Bypass holes. Also note the replenishing holes for the oil to have a place to go as it goes through its stroke. [ATTACH=full]185686[/ATTACH] [/QUOTE]
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GEN 1 (2010-2014) Ford SVT Raptor Forums
Ford Raptor Suspension Discussion and Modification
How To: Adjust the Fox Shock Perch / Height / Level the Front
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