Introduction F5J 2.9m

What an easy sailplane to put together - the laser cutting is top quality ,and so fine . The whole thing just slots together without any fettling of parts - just installing radio so havnt flown it -

I have been building and flying rc over 40 years this is one of the nicest sailplane kits I have built and flown. Fit to finish is exceptional builds quickly. Hyperflight shipped fast and responded to my questions quickly. The people at hyperflight are great to work with. This has become my favorite craft to fly.

Fast delivery & excellent communication, well done Hyperflight. The kit is of great quality & a joy to build, I can't wait to get it finished & in the air.

Really quick delivery and although I haven't started the build yet quality appears to be excellent.

First, per usual, the shipping was excellent. UK to NC, USA in 4 days. Always impressed with Hyperflight's service.
This is probably one of the easiest and fastest builds I've ever done. The build is straightforward and easy if you have any building experience at all. I didn't run into those "head scratching/questioning delays". With some building experience, one could follow the excellent German build manual and probably get by. However, the English translation is easy to follow, mostly corresponds with the steps in the German manual, and in spite of the wing build in that translation being for the Inside, the fuselage is identical and the wing is pretty much the same. I worked a couple hours every evening and one full Saturday and was ready to fly in 3 weeks.
My only 2 complaints; The ribs and mid ribs fit rather loosely on the carbon spar, I believe the tolerance's could be a bit tighter and need to be if using thin CA. I would suggest med-thick CA to get a good bond, or even epoxy. As it is, I just don't feel the wing is as "tight" as it could be, though when covered, is sufficiently stiff so this isn't really what I would call a "deficiency" just something that could be better. The second complaint is the motor nose block required some reaming and sanding to get enough clearance for the motor. The wires channel also required milling out. This just to make it all fit. There is almost no ventilation to the motor and heat will build quickly! Keep that in mind when choosing the motor diameter. I've overheated my motor and considering some ventilation options.
Just advice; Also when building the joiners, do one at a time and go slowly being VERY CAREFUL to get both wing panels properly aligned. If the joiner is off slightly, you will have difficulty getting the panels to align perfectly when assembled. Using the clips to adjoin the outer panels to the mid is a neat trick, but you don't want open space between the two and getting everything aligned during the build will assure no gaps.
Now on to flying. At this writing I only have maybe 15+ flights, but I am impressed. She is definitely a floater! A slow easy flyer that uses lift very well. I'm still working out trims but overall I am impressed. One big negative but one which is well known; This plane does NOT penetrate wind well. Much over 10 mph wind and she just stops. It will take considerable down trim just to move forward and personally I find it difficult to hang into lift with more than a breeze, as circling will take you far downwind quickly. But that probably says more about my piloting skills than the plane. Not a good clear way to add ballast other than there is room forward of the wing, but that will affect CG.
Overall, just totally pleased and out of all of my planes, this is the most relaxing and pleasant to fly in calm-light breeze conditions.

Amazingly fast delivery to me in Connecticut. I have just started building the Introduction and I was very impressed with the over all quality. The parts just snap out of the sheet and require no sanding and they fit perfectly. It's a well engineered kit.

Great kit very easy to assemble as there is no cutting out to do every part is laser cut to a very high standard
The only problem I had was maintaining the alignment of the round wing joiner

Excellent delivery very quick but there was damage to the both box’s. Look as it the instruction manual took the force no damage to the parts.
The kit is excellent quality.
I am so pleased with my introduction to f5j.The build is so relaxing easy to assemble and every part fits very precise.

Excellent delivery.
Kit is excellent quality.
Not done any buildng yet as recovering from knee replacement op.

For us flatlander thermal guys I the Introduction has a slight advantage in light conditions compared to my Inside. Pick your poison, but my go to ship in light lift is my wonderful Introduction.