I wanted a light, stiff, pushrod outer tube to replace the plastic outer tube provided in a 'Speedo' glider kit. This is perfect. It's one third of the weight of the supplied tube and much stiffer. Slop is minimal. The price of this tube is also very reasonable and delivery speed superb. It is securely sent in a cardboard tube. You might want to buy several carbon tubes the same time to offset the postal cost.
I inherited this Intro from my dear deceased friend Spencer, who didn't quite manage to complete it before he departed for the great hanger in the sky. My only task was to install the motor, ESC and lipo, which was relatively easy, giving an AUW of 975gms.
The maiden flight off the slope was delightful in its stress-free nature with minimal trimming required. Since then I've flown Intro on numerous light weather occasions up the hill (10mph or less) and it is always a joy to experience its vice-free behaviour - so stable you can almost eat your sandwiches without having to touch the sticks! At the same time it indicates thermals well and picks up height quickly. Precision landing is no problem with the very effective flaps. At first I was a little worried about landing such a fragile-looking model on our rock-strewn slope sites, but it's survived 2 seasons now with no damage.
Overall, an excellent lightweight floater that is tougher than it looks!
All went together in a straightforward manner using the supplied Dreamflight servos and battery pack. Only minor niggle was cleaning up the embedded elevator snake outer which had a small kink near its exit that introduced a little too much friction for comfort. After that it was plain sailing with the CG spot-on without additional weight.
Maiden flight was routine, needing only a couple of elevator clicks to achieve 'hands-off' balance in around 10mph breeze. A quick workout and boy is this model agile! A true delight to bring a huge smile to your face!
A little experimentation with the CG eventually returned me to the initial neutral setting as giving the best overall behaviour. Watch out for the elevator compensation if you decide to droop the ailerons in landing phase - the elevator needs 'up' dialling in, rather than the more usual 'down' associated with thermal gliders.
Also had the chance to try it out on small coastal cliffs/dunes, where it similarly offers great flying. Now to start practising those tricky right-up-close-in-your-face manouvres!
Overall, the Ahi is an absolute delight with the usual excellent service and delivery from Neil at Hyperflight.
Sadly this scale is far from worth it!
I bought one, and after a while the cables to the display broke in the soldering points, (shorting and destroying the LCD display). after a few e-mails back and forth I just stopped asking Hyperflights advice. The scale is now (still) at a local shop, who will try to replace the display, change the cables and recalibrate the scale.
My conclusion is that the quality of the scale does not match the price.
Good quality kit with good wood selection, CNC cutting and very clear and precise CAD drawings. I particularly liked the parts index sketches on the main plan which provide an indication of the shape of the various bits.
Yet to be built so I can't comment on that but so far it all points to a clean and accurate build.
The manual and 'Long Ear' supplement are well illustrated but are in German and even using Google Translate they took a long time to decipher. I had to use a technical German on-line translator for some of the wording as might be expected.
The item was out of stock when I ordered and I was offered notification of stock arrival. This was duly done after about a week and my delivery instructions were met without problems.
First class service from Hyperflight!
After having owned a few of the top end models like Snipes/NXT/NRJ/Vortex 2+3 I settled on the Auri. I am very impressed with these planes, whilst I have yet to fly mine, I cannot fault it's build quality for the price, it's very very close to that of the top end designs. The wing in the standard textreme layup is both stiff and really glossy. The Carbon tails on mine are on par with the above brands, very well made. I love the fuse design, the pod is around the same size as the Vortex 3 so plenty of room for your rc gear and the 4 in pod layout is super easy to set up, I will never go back to top drive designs. The boom is a interesting square section and extremely stiff and the socket for the rudder is the best fit I've seen on any of the designs. Whilst the wing may not be the current hype of small chord, I am expecting it to be far easier to fly and easier to set up which for me will equal enjoying flying it far more than I did with my last model. Dimitry of LD models is super quick to respond to any questions you may have also, unlike some other brands which never reply. I would definitely recommend the Auri if you're looking for a new dlg and usual first class service from Neil at Hyperflight.
Bought this bag for my Explorer BF 3.8m F5J - it's the perfect size. Nice strong and rugged bag with internal separators for 3 piece wings and pockets that fit the stab and fin. The fuselage is slightly longer than the bag with the nose sheath on.
The bag has been logo'ed with Hyperflight which is better than the Vlad logo on the picture I saw.
Very happy with the purchase.
Fantastic next-day delivery from Hyperflight. This battery is a perfect size for the 'Speedo Pro' slope soarer. I checked it out on my discharger and it has a capacity of around 350+mAh. I agree with Chris T. about charging at 30mA as it got slightly warm when charged at 150mA on a delta peak charger.
Assembly was straightforward, I used £2.49 Lidl pack of 4 AAA's, which fit, but not as well as the recommended battery, so I had to use a bit of glue to keep it in place.If came adrift inverted, fell out and took the canopy with it!
Flying looks promising so far - picks up the slightest bits of lift on the slope like a DLG would, but also happy in breeze - feels stable sitting up there, but very lively when you want it to be. I've now found that spoilerons really help with landings - it has a slippery shape and I've needed to slow it down to land on a couple of sites - it's not really a rough and tumble model!
I'm going to fit a better Rx - was using the basic 'Lemon' with a simple dipole aerial, yesterday we had a brief radio outage in flight, I wonder whether it was because the carbon canopy is right over the dipole. Will now use the 'Lemon' diversity Rx, 2 antennae which can be positioned away from the canopy.
Superb servo which I bought (x4) for Precision Aerobatics Addiction X build which I wanted to keep the weight to a minimum. Plenty of power for this application and about 1/3rd the weight of recommended servos without sacrificing speed and power.
My one criticism is that by extending the throw of the V5 they have eliminated any possibility of extending the throw as available in my Taranis radio where I can extend throws up to 120%. This is a problem because it means that even normal 100% throws, if you apply a subtrim, you lose it at the extreme - there becomes a dead part of the stick for which there is no more servo travel.
Once this is realised, it can be worked around because the V5 has so much throw that it can accommodate subtrim by slightly reducing transmitter throws to (say) 80 or 90% giving a little leeway for the subtrims.
Very pleased with this tiny servo.
Being so impressed with the performance and superb quality of the Kappa 20, I just knew I had to have its bigger brother, the 3.5m Kappa 35. As with everything that Neil handles, the packaging was superb, the delivery very quick, and I couldn't wait to get everything unpacked. Mine is the spread carbon version and the quality of this model is stunning, the finish breathtaking, not a blemish to be found. It feels very strong, and I admire the way the designer has done everything to minimise drag: no external horns anywhere, with the aileron and flap actuation all within the wing and the wipers ensuring airflow disturbance is kept to the absolute minimum. This theme continues through to the tail feathers, where all gaps are sealed.
One thing that struck me about the Kappa 20 was how small the tailplane and fin are in relation to the wingspan, but this is not the case on the 35: in fact these components are quite a bit larger than I expected, and at around 50gm the tailplane is not as light as on some designs.
After spending a few days familiarising myself with the model and getting a feel for it - something I always like to do before getting down to work - I realised this installation was not going to be quite as simple and straightforward as on the 20. For a start, a dry run with a Powerline Micro 1025, 3S 1300mah battery and Turnigy Aerostar 50 ESC revealed that some extra noseweight was going to be needed - even with the battery right behind the power unit. I would have liked to use a graphene lipo, as on my smaller Kappa, but even a 1000mah one is too fat to slide into the nose. After much faffing and juggling around, I decided the order of the powertrain would be motor, battery, ESC, with rudder and elevator servos at the rear of the hatch. This made everything accessible, the battery easily removable, and the weight as far forward as possible.
For servos, I chose KST X08's for the ailerons - you need the slimmest servos possible here - KST DS135MG's for the large flaps, and X08's again for rudder and elevator. I didn't use the supplied mounts, which are for MKS servos, as I wasn't comfortable with the amount of space they would occupy. As with the Kappa 20, I decided to use pull-spring actuation for the rudder and elevator to minimise weight - however, for me this proved impractical: due to the material and its location inside these components, there was no way I could insert the spring and feel confident of its integrity and operation, so in the end I used the supplied wire snakes and plastic outers. Heavier than I would have liked, but ultra-reliable and absolute zero play.
After making up the wiring for the wings, I soldered the harness to a Multiplex 6-pin connector as per the manufacturer's intention, but I wasn't happy. These things give a good connection but are small and stiff, not easily accessible, and I felt there was the potential in the tight space to stop the wing seating cleanly on the fuselage, and so I used my favourite Deans connectors - a red pair for one side, black for the other, and I drilled a hole on top of the fuselage for the wiring to drop into after connecting before flight. Felt much happier and secure with this.
With the build finally done, I set the CG at 92mm as per Eroplan's recommendation. I needed some extra weight to achieve this, and the only place to put it was immediately behind the battery. I used small ball bearings in a sealable plastic bag, which makes any adjustment easy and accurate, but I needed 115gm to achieve the correct balance. AUW was 1420gm - heavier than ideal for sure, but I can see no way I could have reduced this very much. Carbon pushrods would have helped a bit, but it would still have been well over what most Kappa flyers seem to achieve, some of whom appear to be using even lighter powertrains yet still get the correct CG without the need for further weight. Well, whatever, I wasn't too worried.
After setting up control throws and programming, it was time for that first flight. I felt slightly nervous, and just did an initial unpowered hand-launch. Totally uneventful: she flew absolutely straight and true and I didn't even touch the transmitter. Then came the first proper flight on a calm and overcast day. My goodness, up she went like the proverbial homsesick angel, the Powerline 1025 pulling her up fast and vertically. Quite an impressive sight. I cut the power at a few hundred feet and she went into a smooth and purposeful glide, much faster than the leisurely pace of my Super AVA Pro. But so precise yet docile was the handling, that I felt instantly at home with her, and she was certainly in no hurry to come down, yet when she did I was able to bring her in slowly and steeply with the big flaps and land almost at my feet.
Since that flight I have been moving the CG back by small increments and getting an improvement each time. I have read of someone who likes it at 105mm, which sounds a bit extreme, but clearly it works for him.
Early days for my Kappa yet, but this is one fabulous model, its extremely low drag and very thin high aspect ratio wings contributing to a relatively fast glide, yet it is easy to handle and feels and looks so right. A bit of a frustrating build for me, but all that's forgotten now!
This classic design has been around for so long that there surely can't be anything to add to what has already been said. Or can there?
Being a purist, I never liked the idea of a prop on the front of a sailplane - until I tried the Kappa 20 and realised just how much flying time I had been missing. In an instant my so-called purist days were over and a whole new field of enjoyment opened up. And so I spoke to Neil and ordered an e-fuselage for my Super AVA Pro. He didn't have an e-fin and rudder in stock, but advised me that it wasn't necessary, that with today's lightweight powertrains the rudder and elevator servos could be mounted up front in the fuselage. How right he was - as usual: with a Powerline 1020, 3S 1300mah graphene lipo and two KST X08 mounted just behind the hatch, I still needed to add some noseweight to get the CG at 99mm. I also fitted a Reisenauer aluminium motor mount, which I secured with JB Weld. Well worth all the drilling and dremelling, as the result looks so classy.
As with all Vladimir's designs, the quality and fit and finish are stunning, but I didn't get on too well with the standard 1.83mm carbon pushrods: the outer tube is quite rigid and I found that the slightest bend stiffened things up, so on Neil's advice I used 1.5mm carbon rod in 1.93mm PTFE tubing. Much lighter, silky smooth, and more than strong enough for the flight loads.
As for the AVA's flying qualities, there really isn't much left to say. 'It just doesn't want to come down' has become something of a cliche in soaring circles, but that's because it's true. However, it certainly wants to go up and the Powerline has no problem doing it vertically. You don't need a thermal to enjoy long and relaxing flights with the AVA, for it settles majectically into what seems like walking pace, yet with a touch of down elevator it quickly gathers pace. Response from the large rudder is instant and it is capable of very tight circles, almost turning on a wingtip. Accurate landings are a piece of cake with the spoilers extended, and very little up-elevator compsensation is needed.
This is one of the most beautiful and easy-to-fly sailplanes you could hope for, so rewarding and satisfying - and great value too. An aging design for sure, but one that in its category is still hard to beat, perhaps only the 4m version having the edge. I love it!
Fantastic service to Melbourne, Australia , thanks hyperflight.
I bought this cuz I have an old Callistic that is still a great plane to fly.....
Researching the build, the manual is in German with the kit, but between photos on the German rc forums and the DS Birdy English manual and very good plans it looks like a straight forward if a little unconventional build, will report back.....
Perfect, fast and spot on service ! Neil kept aside my order during the week time it took to pass through my bank security check for international bank transfers. Many thanks !
Beautiful manufacturing for the price !
Hawk not mounted/tested yet, waiting for christmas electronic gears ;o)
Unlike other spinners, we can control and minimize the gap between the spinner and the fuselage. This is critical for a stylish glider. Care should be taken to securely tighten the screw. I once lost the spinner and the prop during a flight just after starting the motor.
Excellent servo: Except for two things. The leads are too short. I missed the small print that actually says its 7cm as opposed to 8cm for the low voltage version, but in fact mine is only 6,4 cm. Even 7 would be too short for a four in a row installation, you will have to splice leads on the 4th, maybe even 3rd servo's.
Nowhere on the manufacturer's site or anywhere does it say what servo horns it comes with. For the price I had assumed it comes with a selection like the KST's does. It comes with a single un-modifiable 7mm horn and nothing else.
For the price: I admit to being disappointed.
Picked up the kit from Hyperflight, worth the drive just for the visit and purchased a couple of other bits as you do.
The kit is splendid with first rate laser cutting the width of a hair(slight exaggeration) but very clean and exact.
Reading a build note from some one else which said (if the part doesn't fit it's the wrong one or you made a mistake) is spot on. Every part fits like a glove.
Everyone mentions no English instructions and I didn't think this would affect my build having built numerous kits before(obviously cheap and nasty) but this model is something quite different and looking at the parts and what ever instructions you can get several time before and during the build is essential. I did make a mistake on the fuselage and the first wing due to not understanding the building method and precision of the build.
It's not finished yet and still needs a final sand on all parts but I have high hopes for this model with the low weight of each item.
The kit is expensive when compared to others but what you get is well worth it, with the quality wood and a well thought out building process. I have built a glider fuselage as well which is a simple task which only carries the receiver and battery.
Firstly, I ordered this kit and some servos etc. and everything arrived next day in very sturdy packaging so top marks to Hyperflite.
I have built many kits over the years but this is by far the most precise and well designed kit using jigs rather then building over traditional plans. Everything was high quality and precisely cut. In general the model went together very well but it was fairly fiddly in places. The instructions are all in German so I downloaded a pdf and used google translate for each section which worked out fine. There are a few oversights in the instructions such as no mention of installing the wing locator pieces but nothing that can't be easily worked out by looking at the plans. One thing I found strange was having a removable stabiliser but the control linkages are glued in place with no snap link! Again something that is easily fixed but when so much thought and detail has gone into the design this is a little suprising to find.
I have installed 3 x ripmax sd100 servos but as others have mentioned in the online build logs they were installed further back then shown on the plan to allow space for the battery. It seems the design was originally based around a 1S lipo but moving the servos back makes has made space for a 800mAh NiMH. I had to also remove a small former (F4) in the wing to fit the spoiler servo and allow the spoiler to fully close.
The finished model is very light and looks fantastic (transparent Oralite shows of the intricate design). I've no doubt it will fly superbly but I haven't had a chance to fly it yet. I had plans to fly not only from a bungee high start but for light winds on the slope but it might prove to be a little fragile for slope use.
I have given 4 stars due to the complexities of changing things around (something I feel most people would need to do) but overall a fantastic kit that promises great performance.
As with the Malibu Pro the AURI arrived at my doorstep in Australia six days after placing my order with Hyperflight. The AURI was well packaged. All components were accounted for and of high quality.
I am about to complete the build which includes fitting 4x KST X08 V5.0 servos, micro receiver and a 2S 300ma Lipo. The only change I have made is fitting Kevlar string elevator and rudder rods. The build is relatively easy and well supported by pictures posted on RCGroup AURI.
Concluding, again the whole process of ordering and dealing with Hyperflight has been a positive experience and I will be dealing with this organisation again.
Just a quick follow up on my Malibu Pro. The Malibu was easy to complete including placing the Blue Bird servos into the wing. Flying the Malibu of a shallow beach dune was a delight. The aircraft is very responsive and response positively to any lift. I have flown the Malibu now in conditions up to 16 knots and I am surprised how well the plane handles and penetrates. Another plus is the low power consumption, three Bluebird servos and receiver consume +/- 35ma per 30min. All in all I would recommend the Malibu Pro to anyone seeking a dlg that is inexpensive but has a wide performance envelope.
Excellent little motor which gives plenty of thrust on 2 cells mines in an O/ D lite weight 2 meter glider with a narrow front fuselage where your standard 28mm outrunner wouldn't have fitted.
I inadvertently ran it with 3 cells on a 10x6 and it still works !!
I've tried over the years making these things and it's just not wortrh the time and effort as they always turn out inferior and cost more. I prefer the yellow penant tied to red mono line. Nothing fancy about the line either use .7 if you want to be legal or just use 30-40 lbs
To start I ordered from hyperflight Sunday night, just 2 in stock and I had waited too long before. Tuesday 11.20 am hyper fast. Packaging to proof against earthquake.! Inside the model is close to finished two cables and 4 sevos and done...
Build quality is best I've ever seen, I could not have done as well at my best. So 5 stars for build. The 2 servo on spoilers intrigued me but on looking all becomes clear, put servo on plate below spoiler and the arm lifts it up. KISS (Keep it simple stupid) principle. An e band to keep it down, simple.... And nothing to go wrong. The wings in two colours compliment each other, clear film I can't wait to see in the sky. Servo shelf in I think glass cloth n resin in fuz lots of room so one to left other right. (hope it's right, it works without any play.) no instructions, but really none needed. Control runs straight and simple. Tail fin rudder and vert stab all finished just horns to put on. AND DONE. Bad news I live in the UK so November not the best for a test, so no flight yet but I'm very confident it'll go up. And spoilers will get it down. FYI you will need a hook I got the adjustable from HFlite. It's great.
I bought 4 of these to fit the Blue Bird servos into the wing of my Osprey F5J and was glad that I did as it made the fitting the serves so much easier. Really well constructed and easy to fit. Thoroughly recommend these as they are also great value for money too! I should also add that the delivery service from Neil was also first rate, I ordered them and asked Neil if he could get them off to me quickly as I wanted them for the build (I forgot to order them with the main order), they arrived the next day! Can't get much better than that.
One out of four servos was dead on arrival - zero resistance across the power leads. I'd soldered direct into a tight wing installation when I found this, so out it came. Apparently removing the plug counts as "modifying the servo" so I'm only due 50% cashback, which I still await. I'd have some sympathy to this - if there's a credible way in which removing the plug could cause an internal short circuit, I'd accept zero. But apparently I should be "grateful" for this level of service. So much for supporting the independent toy shop owner like we used to do with Addlestone Models 35 years back - next time I'll show my gratitude to Hobbyking.
The customer modified the servo and then wanted it replaced when he found it wasn't working. I gave him a voucher for 50% of the cost so he could prurchase a replacement at half price but he was not happy with this.
This is a nice glider to tinker with. I oriented myself on the manual of the Slingshot V5 to add some elevons to the build. It still has a good glideslope with 180g flightweight (and a 5g screw in the news).
The manual could be clearer with how to attatch the string to the servos and wing attatchment.
I recommend buying two. One to train building on and one to build right.
Deliberated first a long time over which Ďplane to get for my first foray into F5J. Boy am I glad I chose this one as itís an absolute beauty. Extremely well made and easy to assemble. I needed to open up the rear of the fuse so that the elevator control clevis could operate. This was because the control horn slot was slightly off centre and I didnít notice it before I stuck the horn in! The wing tips also proved to be a bit difficult to join without a gap to the centre wing section. I ended up slightly sanding the dihedral braces to get a better fit, not too bad now, 2mm gap on one, slightly more on the other but covered by tape when flying anyway. I use Jesperís F5J program for flying and it needed no in flight trimming after setting everything up on the workbench. Iím not thermal soaring expert but even I can see when even weak thermals are encountered as the Osprey responds to lift really well. The only thing Iíve got to sort out now is better landing braking as she just floats and floats and floats. Excellent value for money.