Make a left and right hand assembly 1. Weights or some small heavy objects will be handy for holding things in place during the time glue is setting. Omit this step if your kit did not come with these oval parts. It is very similar to this guy's Yak 55, except his has some major structural improvements: edit: Here's some friends doing some 3d limbo on asphalt. Use some clear packing tape on the bench to keep it from sticking.
Take care to make sure the upper fuse is in line with the lower fuse and 90 degrees to the horizontal fuse piece. Dave hovers his Crack Yak during a demonstration flight at the North Penn Winter Blues Indoor Fun-Fly. Please note that if lithium batteries are added to your basket, standard postal options will not be available and the options will be restricted to carrier shipping only. One that would be more capable and fly more similar to balsa but yet still offer some of the characteristics that would make it a good learning tool for people progressing up the learning curve. So, I started working on this thing one night, trying to look at what makes a Yak a Yak and what were the good parts of it. Please read through the entire manual before beginning to build this model.
Pay special attention to ensure that the wing is flat and the spar is straight and true. Wax paper or Parchment paper could also be used. This is the only adhesive you will ever need. There are other ways and methods to do so. The next couple of flights were completed inside a large gymnasium.
Got to fly 6 flights in-spite of some strong wind. I was getting more excited by how this plane was flying. Also at this time note the center locations of all servos and attach the quick links to the horns as shown. They are a lot of fun to fly but they are quicker and respond much more aggressively than they their larger brethren. Welder virtually bonds anything to anything! You wouldn't want to try this with balsa. Posted by Todd Magargle on Aug 14th 2017 Love this plane. Make sure everything place stays straight as it dries.
Well finally got to maiden my new Crack Yak today. While the upper fuse is drying put Welders on the canopy area and let it tack up. Put Welders on the Fuse find side and let it tack up. Fill them with Welders too. Multiple parts are involved, and several glue joints are made simultaneously. Make sure and adjust if necessary for squareness.
On the 3D rates, the Yak livened up. Because that's sorta what I was looking for. I had high expectations and I'd say it met or exceeded them all. We tossed some ideas back and forth and before you could find a tube of Welder's at Lowes I had the first prototype built and flying. With the aircraft Again with the output shaft towards the shown.
See the with the mating top edge on the fuse, may be necessary to cut the slot a little next picture for how the horns should. I found the Crack Yak to be fully aerobatic without being too sensitive. Before installing the aileron servo in airframe make sure differential servo arm assembly is removed from the servo, it will be installed once the servo is in place. If you like bipes, go for the standard Crack Pitts. Push Rod Guide Install the long pushrods in the tail starting by inserting the Z bend in the tail control horns. Seems to need a little more aileron throw than the stock arms provide. This is the only adhesive you will ever need.
Slow flight at any attitude is a Crack Yak specialty. Then wrap the whole joint with thread. Put Welders on the wheel pants and let them tack up. New wing core with tapered tips is one of the new features creating a much larger flight envelope for strong wind capabilities. Slow flight controls are very positive and I can see why this is so popular. Put the lower fuse onto the horizontal fuse piece while the glue is wet.
Simply Amazing By George Herbert This is the first plane I have flown after 6 years of being out of the hobby and it is simply awesome. There are a number of rooms within the channel but just ask if you want others added. I use the excess screws that come in the servo hardware package. I felt that the Yak was over done and that if I saw another model of a Yak 55 I might just poke my own eyes out. Of course you could install them as you build the plane. The Crack Yak is built on a flat work surface. The rudder response was so perfect now that you could just jam the stick in either direction and it would turn flat all by itself all day long.