Ross Evans' Australian KR2S


Ross Evans' Australian KR2S

created May 20, 2004


I bought the project last july and have worked every spare minute on it! I am hoping to fly it in the next couple of months My plan was to fly with in 12 months and intially I thought It would be done in a lot less time but I am happy with how the plane is going!

Here is australia kr's are becoming real popular again the early kr2 got a fair bagging here but now with the kr2S and tricycle under carriage they are coming back I have seen and met about 6 builders curently with many more about to start! There is going to be a flyin organised next year when a few are going

Narromine about 5 hours drive north west of sydney is where we all meet at easter! It is the national ultralight gathering! My plane is going to be registered GA experimental here with most of the kr's being ultralight! In Australia there is some really great places to fly and we have flyin's where you turn up at a cattle station and they put on a huge weekend! One place is raglan about 300 miles north of brisbane the property has a 2000 metre airstrip and they run a rodeo/airshow and party weekend! All of you guys in the states would love it! No controlled airspace and just go flying! They have a fire at night that has a dozer pilling up the timber and great food big brahman steaks!!

The military aerobatic team they turn up in their PC9's and land and even ride the bulls and then do the airshow on the sunday! There would be about 10 000 people turn up on the sunday but these guys love the relaxed atmosphere that they normally don't get!


I purchased the kr2S in june03 as a ongoing project the aircraft had been sitting for about 6 years with the second owner not having the time to finish it! The plane had hangar rash and needed some work the plan being to make it fly in 12 months well maybe a little longer! The kr has a dragonfly tinted canopy and there is a cowl mold that looks very lancairish!


Christmas 03 was spent making the canopy about 250 hours of jigging fitting and refitting. MY father and I worked in my single car gararge for 2 weeks during the hottest part of the year to do this lucky we have aircon it would have killed us


the finished product it hinges forward and is conected to a the removalble front deck not the fibreglass tank as per plans I have a 46 litre alliminium tank!


The wings on the plane for the first time! I really need a shed a townhouse and a plane to build don't mix real well but hey you just have to do it!!! aeroplane parts in the kitchen, The bedroom, and The lounge!


Another shot of the wings on!


Mass balance of elevator. When I bought the project the elevator was finished and the turtle deck was on. I was told that my elevator should be mass balanced. I did not want to start cutting into parts of the plane that were already built. So I spoke with several builders and engineers and found out the most effective way to balance the elevator was by putting the weights out from the tips anyhow! What I did was use a 500 long piece of chromolloy tube and filled it with lead to the hinge point. I then used 2X 3/16 bolts with nylex nuts to bolt throught the timber mainly to hold it in position to glass. The glass will do nearly all of the work! I scolloped the foam out along the timber and filled it with mil fibre to give more compressive strength around the area! I used microballoons to give a radius in the gap between the tube and the wood! I also filled the tube with a mix of mil fibre and micro balloons inside the tube around the bolts.I used 6 ounch glass 3 layers to past the hinge point to give strength. I used peel ply, that stuff saves a lot of filling and sanding!


The finished product maybe a little heavy but worth it I feel. I estimate a weight of 1.5kg for the balance set and with the computer for the fuel injection it should balance out I am hoping to have a empty weight of around 310kg at the most!


These brakes are similar to larry flesners brakes! My pedals hang down the problem is getting the geometry for the toe brakes and then having the room to mount can't have both!

My dad spent several days designing and bulding the brakes to work well and also be as light as possible! One thing I wanted was the rudder pedal to be used with out riding the brakes a little so the rudder part was raised of the tube and you actively have to touch the toe brakes! If anyone copies this idea make sure that both legs that the cyclinders mount to are bent a little because of the rudder tubes off set to mount this will ensure both pedals are level!


This is my lovely cramped work shop so any guys out there contemplating building and reckon they don't have room look at this! I have to get rid of a bench when the engine is mounted to allow the plane to fit!!!