Tuesday, March 11, 2008

Avax XC2 Maiden Voyage

Today I flew my maiden voyage on the Avax XC2. I flew in thermic conditions for 1:45 and enjoyed the wing very much. The following notes are offered as a first impression only and are not meant to be interpreted as anything more than my personal impression. I will include the information I look for in a report. My experience with the AvaxXC2 is limited to this flight only and I won’t mention conditions I haven’t experienced.
My Background:
Most Recent Wings: Gradient Aspen2-28 (120 hrs) – Airwave Sport 2 (200 hrs) – Gin Bandit (40 hrs) – Edel Confidence (80 hrs)

I plan to attend an SIV clinic this week and will report on the festivities.

Gradient AVAX XC2 Flight Impressions

o The Wing came with a std. Gradient cinch bag for the wing and a nice rucksack of a newer design than my Aspen’s Rucksack. The new design is slimmer and taller with a storage pocket that can carry a full flight suit and coat. The top flap protects the helmet. I’m not sure if I’ll continue to use this new sack since my Ram Race Harness is a rather tight fit.

o The lines are thin, unsheathed Edelrid Aramid - 1.2mm to .5mm.

o The risers are standard Gradient riders thin but robust, with “snap” type brake handle stowage. The main difference is that there is only one speed-bar pully.

o Accelerator system.

o I used the same setup on my speedbar (a 3-step UP bar) as I use with the Aspen2 and found no adjustment to the system was necessary.

o The speedbar that came with the wing is a simple one bar with a tygon tubing covered loop. I will donate it to a new pilot.

o Much has been written about Gradient’s decision to use only one pulley in the speed system. I found the speed system to be the same resistance as the Aspen2 (which has 2 pulleys) and within acceptable strength requirements. I used it much of the day & had no fatigue issues.

o Brake toggles are Std. Gradient. They seem to be adjusted properly right from the dealer.

o Wing.

o Size 26 (85-105kg) Color Blue/Grey top with std. Gradient Blue under wing decoration. Weight during flight – 102Kg.

o 73 cells and 6.38 Aspect Ratio. Weight 5.4kg.

o Workmanship is excellent. The micro lines attach to the trailing edge with a doubler.

o The brakes attach with a with a loop of cord through a ring in the trailing edge – both are methods of attachment of the microlines that are not used on the Aspen 2

o Behavior.

o The Aspect Ratio of 6.38 makes this a bit of a handful to ground handle at first. I found the A&C (Mitsos) method to be slightly less effective due to a tendency for the wing to break & snake if I was heavy handed with the C’s. I expect this to be a temporary problem as I learn more about the wing.

o Launch is very Aspen-like. The wing comes up easily and can be stopped accurately with brakes or C’s. Directional control is good. No bad habits.

o Landing was very straightforward. The additional glide performance in short LZs will take some getting used to.

o Flight Handling

o This wing is a high aspect ratio wing with crisp handling. I found that the wing was very responsive and reassuring in its response to turbulence. In the 90 minutes I flew the Avax, I felt very comfortable in rough lift and maneuvering close to the terrain. In short, I would fly this wing anywhere that I’d fly the Aspen 2.

o When traversing the edges of strong thermals, I got a couple of small tip-tucks, very minor and quick to come out. The wing never moved out of the safe zone & was very responsive to my inputs.

o The wing WAS a bit more ‘twitchy’ than the Aspen 2, but I think much of this was due to my inputs rather than the wing. My habits were for the less responsive Aspen2 so I started the flight overcontrolling a bit.

o On the speed-bar the wing felt rock solid. Even more solid, on bar, than my Aspen2. I flew COMFORTABLY on full bar between thermals. It made my eyes water it was so fast (or were they tears of joy?) and the glide didn’t seem to degrade greatly with bar.

o Thermalling the Avax is a treat. It doesn’t retard when entering lift, it cuts into the thermal and goes where you tell it to. Banking up to stay in a small thermal is easy and attitude control when banked up is straightforward. When the lift is weak, I found the sink rate in flat, slow, turns to be excellent.

o I had only two very small tip tucks – I wouldn’t even call them collapses – and they came out by themselves. The wing is not prone to frontals or loose tips – I flew in many areas where there was shear and the Avax stayed pressurized at all times.

I have no performance estimates or reports of recovery from collapses at this point. But, the wing covers considerably more ground than my Aspen2 and scoots!
The Avax XC2 is an excellent ‘follow-on’ glider for an experienced pilot who regularly flies a modern DHV 2 wing like the Aspen 2. It has very good handling and is forgiving in turbulence.


NOTE: Additional info on XC2 at SIV HERE.


dani said...

Hi Timo

Thanks for your report. After three years flying a Nova tattoo, I am thinking in upgrade to a XC2 or Trango 3. My only doubt is the size, because with 96-97 Kg total weight in air, trango 3 SM with 27 square meters seems to be ok, but XC 24 with 23 sq.m. can be too small for me. XC24 or 26? this is the question.
I don't like to carry ballast!!

Best regards. danitena@gmail.com

P.D. Sorry my poor english

Tim O'Neill said...

Hey Dani -

I haven't flown on the AVAX XC2 at anything but at the top of the wt. range, but have heard some feeback from other pilots that flying at the top of the range is best.

I would say that you should try the 24 first. It sounds like being over 1-2 Kg is better than being under by 4Kg.


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