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To really become good at jumping your bike you must first understand the various types of jumps and related <br />terminology. From there, it's time to understand the what, why and how of jumping. And once you've got all that dialed, <br />learn how to apply your new understanding of jumping mechanics to all the different types of jump features you might <br />encounter on a trail. Learning how to jump isn't a straightforward journey — it's takes time, practice, and a good <br />guide. That's where we come into play. Let's get started. <br />The following illustration breaks down the parts and types of jumps you may encounter on J-Gulch Dirt Jump Park. <br />The anatomy of jumps <br />There is infinite variation in the shapes and sizes of jumps, but the same Table -top (has a flat top) <br />basic principles apply everyi. here. Good dirt jumps itirill be close together <br />with smooth, rounded transitions to help with pump and flow, but jumps on <br />a downhill course could be very different, usually designed to be ridden at <br />high speed. Here is a basic introduction to some aspects of jump design. Double (has separate take -off and <br />landing ramps). Gap can be severe or <br />Transition Best smooth and rounded. <br />Lip • landing <br />(tI'aIlIly.� area <br />Step-up (landing is higher than take - <br />Take -off Landingoff). again, gap can vary. <br />..............----.......------.--------.-------.......................---..............................----...........--------...........------..-...........................--.-----------------....------..---...............--------.---------.------....................--.------...... <br />Smooth, rounded transitions between jumps <br />Roll -in Roller Pump bump set-up jump Main jump <br />The approach— Used to get speed with- Small and easyjump What it all leads up to. Usually the lastjump in the line <br />nicest if there's a out pedalling, and starts used to gauge speed will have a mellower landing to make it easier to land <br />downhill with little the rhythm of the line. and get pump for the tricks. The others will have nicely curved and steep <br />or no pedalling. main jumps. landings to keep pump and rhythm for the next jumps. <br />18 Steps to Building the Dirt Jump Park and status of each ste <br />#1. Permission and Partnership Done <br />#2. Team Input Done <br />#3. Location Done (Property Survey completed) <br />#4. Water Source Natural PWN conditions <br />#5. Risk Management Plan Recreational immunity; IMBA, USDA Forrest Service, WA DNR, <br />#6. Signage System <br />#7. Indemnification <br />#8. Schedule Inspection and Maintenance <br />#9. Design <br />#10. <br />Design for EVERYONE <br />#11. <br />Table Tops and Gaps <br />#12. <br />Measurements and Geometry <br />#13. <br />Construction Plan <br />#14. <br />Good Dirt <br />#15. <br />Grade Site for Drainage <br />#16. <br />Build and Compact <br />#17 <br />Stewardship <br />Evergreen MTB, NRPA, AWC <br />Underway <br />Risk Management <br />Underway <br />Underway. 3 Lines, using IMBA Trail Difficulty Rating System. <br />Easy, More Difficult, Difficult <br />Surface Features, Gradient, Width, Technical, Fitness Level <br />"Jumping is all about progression:" <br />Cost, Permits, Equipment, Labor <br />Screened Loam with a fairly high clay content. <br />Gentle slope perpendicular to the jump lines <br />Formed Rough Jumps to be sculpted and packed <br />Done. Youth Advisory Council, Mentorship, Organized Local Group <br />Receiving guidance to operate under established By-laws and APA WA <br />Youth in Planning Task Force Model. <br />#18. LEARN <br />