Physics of Motorsports: Seat Bounce Debate

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The discussion centers on the physics of "seat bounce" in motocross, with a focus on how it enables riders to achieve greater height and distance when jumping. Various theories have emerged, including the role of spring rebound, the rider's center of gravity (COG), and the potential influence of muscular "springs" in the arms and legs. A dedicated forum, www.seatbounce.com, has been created to facilitate this debate among enthusiasts and experts. The goal is to clarify the mechanics behind seat bounce and reach a consensus on its underlying physics. Contributions from physics experts are sought to resolve the ongoing debate.
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Hello,

There has been an ongoing debate on several motocross message boards over the last few months regarding the physics behind a "seat bounce" (pictured below). It has even lead to the creation of a discussion board in the last two weeks called www.seatbounce.com.

I am not here to spam this board since I have no affiliation other than I am looking for Physics experts to help solve this problem. Performing a seat bounce allows a rider to fly both farther and higher than just hitting the jump/ramp while standing. Some guys are saying it is caused by the springs rebounding propelling the rider other says it is from the COG being lower allowing more traction, and others are saying it is from "springs" in the riders arms/legs.

http://www.seatbounce.com/forum/viewtopic.php?t=19

The thread above is the most recent debate opened up and hopefully one of you experts could help end this once and for all!

Thank you!
Paul

http://www.transworldmotocross.com/mx/content/images/nov04/111604KG9V3119sm.jpg http://www.transworldmotocross.com/mx/content/images/nov04/111604KG9V3120sm.jpg http://www.transworldmotocross.com/mx/content/images/nov04/111604KG9V3121sm.jpg
http://www.transworldmotocross.com/mx/content/images/nov04/111604KG9V3122sm.jpg http://www.transworldmotocross.com/mx/content/images/nov04/111604KG9V3123sm.jpg http://www.transworldmotocross.com/mx/content/images/nov04/111604KG9V3124sm.jpg
 
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