PARAGLIDING IN SA  |   FLYING SITES  |   REVIEWS  |   AIRLORE  |   STORIES  |   GALLERY |   CARTOONS Is the Ozone OCTANE the sport-pilot's dream? by Greg Hamerton Greg has been flying since 1992 and has flown over 100 wings. He prefers responsive handling and agility but rates passive stability highly as he enjoys taking photographs and snoozing whilst gliding.  This review is also available in Serbian "A wing that will take you from your early XC days through to your wildest adventures, with security," said Ozone's website. Multiple world champion John Pendry. Multiple world champion Robbie Whittall. Aerodynamicist Dave Pilkington. And renowned glider designer Bruce Goldsmith (now returned to Airwave). Put these boys in a room together, and what kind of glider do you expect them to come up with? Something breathtaking, ahead of its time. As the ultimate test, Bob Drury and Rob Whittall took the Octane in to harsh Himalayan conditions during their recent BBC film expedition. A wing with such an impressive history of development is hard to ignore, and even more difficult for a free-flying pilot like myself to criticise, but I'll do my best to cut through the hype. CONSTRUCTION : Following in the footsteps of Apco Aviation, Ozone has opted to use the tough Gelvinor fabric on their upper surface. Having witnessed gliders flying well over 400hours in the harsh UV of South Africa, I can vouch for its track record of durability. The Gelvinor used on the Octane is not the heavy, siliconised fabric of the past, but a crinkly, light new weave. 'V-supports' reinforce the glider inside the cells at the line-attachment points (every second cell), but do not extend along the whole chord, which keeps the overall weight down. Tape. There's tape along both sides of the cell-openings, tape along the trailing edge, and wider tape inside the wing, reinforcing spanwise a cross the A, B, C and D hang-points (in the centre of the wing only). This solid build is echoed in the risers - simple, clean black webbing, neat colour-coding, standard triangular maillons, rubber keepers. A thick loop at the final hang-point shows good finish. Octane overhead The speed system uses two sturdy pulleys to engage a very traditional adjustment to the risers, maintaining an equal progression. The D's remain fixed, A's go down by 17cm, and the B's and C's float to keep the change linear. The brake-toggl es are soft, filled with a spongy fabric which is a pleasure on the back of the hands ( for those who fly with the loops over the wrists ). Thanks, guys! Apart from inserting luminous repositories for night-flying, I couldn't find much use for "the butt- hole", a slit on the trailing edge at the wingtip (sealed with velcro). But some pilots will love it for dumping their load of sand, grit and unnamed creatures which creep into the wingtips. LAUNCH : Slow, even pullup. Sits nicely overhead, if anything slightly forewards of vertical, which makes the launch-run easy. It wants to fly, and needs to be held back a bit on the brakes. HANDLING : The Octane feels like an intermediate, with moderate energy retention in turns. The brake pressure is light and smooth. It's easy to turn even without weightshift. She is sensitive to weightshift, reminiscent of the Firebird Flame, but does not bank too far. It feels as if you are driving along a road which is raised in the middle - lean slightly to the right, and the wing moves across and banks the perfect amount for a thermalling turn. I flew in some grotty Fohn conditions, and could put the Octane on its wingtip and wang up inside the narrow cores. Some outside brake is needed to keep the turn optimised, though the tips remain well pressurised even with no brakes applied. This wing showcases Ozone's solid research and testing - the Octane has measured, balanced handling yet retains a certain flying finesse. GLIDE : Yeeha! The Octane does everything it's Serial Class predecessor did, but its safer. On trim the glide is identical to the Ozone Proton, with the Proton maybe 0.5km/h faster. On full speedbar it held an identical glide and speed to the Proton over 2 minutes (against an equal weighted pilot, both on Mediums). And the glide at full speed is good - I could use the bar all the way to pass other pilots on a crossing without losing much on altitude. SECURITY : The response to spins, stalls and asymmetric tucks puts the glider firmly in the DHV2 class - 'lively' but safe. The reinflation from smaller-than-50% collapses is spontaneous and positive, with the wing banging out before even 60 degrees of turn. With the bigger asymmetrics, I found the wing diving to the horizon and turning through 90 degrees before the decelerating phase and reinflation. But a competent pilot would be able to catch and countersteer the collapse easily, and it reinflates before 180 degrees. The front tuck had a delayed opening, passing through a short stall phase before flying with a very mild surge. I flew the wing in grotty Fohn conditions, and was thrown around by turbulence, though only had a few mild tip closures. With a little pilot input, the Octane can be held steady. On full speedbar the feedback from the wing increases, so you'll know when to step off the bar to avoid major deflations. Landings are easy. The wing can be slowed very effectively with the butterfly technique, useful for zero-and downwind landings. I really needed this when slope-landing at an accident scene during the review, on a steep, rock-strewn mountain-side. The Octane set me down neatly, with predictable, precise handling. SUMMARY : The Octane is the recommended fuel for the enthusiastic xc pilot wanting a wing with responsive, light handling, great performance and the ability to crank really tight turns in narrow cores. It has a 'light' feel in the air, providing good feedback via the harness, yet it retains a secure aerofoil. Glides are smooth and fast, but if you want to stop to work a sudden thermal, the Octane's reaction is quick. It is best suited to pilot's who enjoy and display finesse in their flying. Thanks to the Ozone team for their dedication to detail, and the thorough research evident in their latest release. If you're unsure of which class you should be interested in, read my article on upgrading. TECHNICAL SPECIFICATIONS : OZONE PARAGLIDERS - www.ozone-gliders.com South Africa - Greg Justus - +27 (0)82 5574322 OCTANE ( DHV2 )           Medium       Number of cells                   53       Projected area (m2)           23.35       Flat Area (m2)                    26.89       Projected span (m)           9.55       Flat span (m)                     11.78       Projected Aspect Ratio     3.91       Flat Aspect Ratio                5.16       Root Chord (m)                   2.85       In-flight  range (kg)           80-100       Max speed (km/h)               50                           Airborne reviewer (kg)           100       Vmin in review (km/h)           23       Vtrim in review (km/h)           37       Vmax in review (km/h)           50                           Altitude of review (m above sea)           800       Air pressure Qnh (in hPa)           1019       Air temperature (degrees C)           17       Correction factor* for speeds           101%       * Note : Apply the correction factor to scale the results to a standardised condition of 1000m altitude, 1013.2 hPa Qnh pressure, and 15 deg.C. air. 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