D4 portaledge Updates on production. Later, in consultation with John, Luke at Runout Customs re-created the A5 Alpine Double design and began manufacturing the proven light and compact A5 design under his own brand. Durango Sewing Solutions is now making the Delta 2p Portaledge, based on John Middendorf's open-source D4 design. In 2017, John Middendorf produced the first expedition D4 portaledge for Marek Raganowicz, who then used it for an extreme expedition in Baffin Island where he lived in it for 30 nights on two new big wall routes . Together, John and Barry have re-established the world’s best portaledge design/build team. After designing the iconic A5 ledge 30 years ago, John Middendorf has crafted a welcome upgrade. The D4 portaledge is also being widely adopted by tree campers--this hybrid diameter rigid frame is really the first portaledge suitable for tree camping--prior portaledge designs do not have a reinforced centre tube and thus would flex wildly when set up in a tree, because all the load is at a single spot in the centre of the frame--the worst CURRENT STATUS. Instead of block corners, which has been the de facto standard since they were first introduced, the new D4 Portaledge has rounded curved tubing corners, which offer more rigidity and are lighter than D4 Delta2p—the first “foot-out” portaledge design, 2020 Working out issues with this “foot-out” portaledge concept took some time and a marriage of various new technological developments like CAD/CAM, and this post will also provide tips for other innovators. Kalman tells the story of his early frustrations with the D4 ledge and how he ultimately came to love it, awarding it five stars. We build the D4 full-size portaledge and the Delta 2p portaledge based on John's latest open-source designs. If you climb big walls, this is a must-read. How to create your own curved tube portaledge frames, the lightest, most compact, and strongest ledge system, as well as stormproof D4 innovations such as the single seam corner-pocket zipped fly that make for the most secure and versatile storm system ever. A5 and D4. 5” x 15” x 8” oval that fits nicely in a haulbag and weighs only 18. Durango Sewing Solutions is proud to be fabricating and distributing the D4 Portaledge, created by legendary big wall climber and outdoor gear innovator, John Middendorf. In 2017, John Middendorf launched the D4 Portaledge, a whole new paradigm in portaledge design and technology. "Pass the Pitons" Pete Zabrok aka Dr. In the 1980s, the A5 portaledge was designed by A5 Adventures, a company owned by John Middendorf. Jan 5, 2019 · D4 Portaledge – $1100 + rainfly D4 portaledges is one of the newest manufactures on this list but John, the creator, is one bad-ass climbing veteran who is passionate about designing top-of-the-line portaledges and has been doing so since the 1980’s! Mar 2, 2017 · The D4 Portaledge is here to revolutionize big wall climbing. Pete gives a review of the new Big Walls D4 design the Delta2P. Welcome to Big Wall Gear's open source D4 Portaledge Design. (Note: If heading out on a cutting edge big wall expedition, please email john@bigwalls. Dec 18, 2019 · I am happy to announce that my new design, which I call the Delta2p (Delta shape, 2 person--I also plan a 3p version) has exceeded all expectation in terms of ease of setup and stability, thanks to many new portaledge design aspects I have learned with my other D4 design innovations during the past 3 years. Ready to blow the single portaledge market up is the D4 D1P single portaledge, inspired by D4 Designs open source designs by John Middendorf. D4 Big Wall Gear--the new shape of portaledges. Piton has slept 800 nights on the side of El Capitan using just about every portaledge on the market. Look for "D4 Design" open source portaledges from your friendly neighbourhood portaledge makers (all designs open source). Built with an elasticized carbon fibre frame, patent-pending D4 Bullet Joiners™, VX-42 fabric bed, and a herringbone webbing suspension; the MiniMe self-deploys when dropped from its haul bag. The D4 Portaledge, designed by John Middendorf, features the latest innovations in big wall portaledge design, materials and craftsmanship. The D4 Full-Size Portaledge sets new standards in stormproof, compact, light, and easy-to-deploy portaledges systems. John Middendorf created the first storm-proof portaledge in the 1980s, testing each iteration on the world’s toughest big walls. This ledge at its widest is 36" and built to barely fit two people on it. in 2019 John and Luke again collaborated to produce a limited batch of the D4 Alpine Double, with the D4 curved tube corners, super rigid and light hybrid-diameter D4 Apr 23, 2022 · Shortly after this model came out, Fish Products, a small California company, began manufacturing their version of single-person portaledge. By sharing the technology though his company, A5 Adventures, a huge boom in big wall standards arose as climbers could withstand severe storms on the . 8lbs—the lightest double ledge on the market. 11lbs 14oz includes the haul bag, ledge, and seam sealed fly. 5 pounds with haulsack, fly, and flypole). Made of 6061-T6 aircraft aluminum, the D4 packs into a 31. Naturally, John brought Barry on board to render his new D4 Portaledge designs into beautiful, hand-built reality. net for custom portaledges--I am still making a few) Oct 24, 2023 · Chris Kalman details his experience with the D4 Octapod, a unique portaledge designed by the legendary big-wall gear inventor John Middendorf. This was one of the first portaledges to successfully endure severe weather in extreme locations. Jun 29, 2018 · The D4 MiniMe is an ultralight, self-assembling portaledge, perfect for lounging on long belays and positioning for photoshoots. The Delta 2p portaledge features a cantilever design that sets up perpendicular to the wall unlike traditional portaledges which are oriented perpendicularly. John Middendorf designed the first stormproof portaledge technology back in the 1980's and 1990's, from necessity, as the pre-A5 portaledges of the day could not withstand severe storms, as John found out after getting pummelled by weather on the South Face of Half Dome in 1986 with Steve Bosque and Mike Corbett, which necessitated a daring In 2017, John Middendorf introduced a new portaledge design, called the D4 Portaledge (82" × 47", 16. kqq liynnh ovcmr siia skbdl nkkgch zscgi lrapb capvi tabczj

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