  
       
                                          
                                          
                                          A 
                                          New-Old Antique 
                                          
       by Budd Davisson, courtesy of 
       www.airbum.com 
        
                                          
            
       
       Aviat 
                                          Monocoupe 110 Special
                                          Right up 
                                          front I want to make an apology: I 
                                          want to apologize to Stu Horn, Aviat's 
                                          president, and all the folks up in 
                                          Afton, Wyoming for what I was thinking 
                                          the first time I saw their version of 
                                          the legendary clipped wing, Monocoupe 
                                          110 Special. I looked at that tiny 
                                          tail, the non-existent windshield, the 
                                          tall narrow gear and I was thinking, 
                                          "Man that thing is going to be a real 
                                          lunch eater. They're crazy if they 
                                          think they can sell those things to 
                                          mere mortals.!" Now, having flown the 
                                          airplane I know how deceiving looks 
                                          can be and how far off base I was. I 
                                          apologize because, while the airplane 
                                          isn't going to be everyman's idea of a 
                                          great airplane, to someone who wants a 
                                          fast, fun flying machine that truly 
                                          has a character all its own, the Aviat 
                                          110 Special is certainly it. 
                                          When I finally got 
                                          my chance to fly the airplane and was 
                                          in the process of doing this 
                                          incredibly graceless stretching 
                                          exercise called "climbing on-board", I 
                                          couldn't help but remember pilots 
                                          inspecting the airplane at its 
                                          introduction at Oshkosh '99: they 
                                          quickly separated into two camps. One 
                                          was shaking their heads, clearly 
                                          amused with just a hint of fear in 
                                          their eyes. The other group however, 
                                          had fire in their eyes and it was all 
                                          they could do to keep from drooling. 
                                          Like we said, not everyman's airplane. 
                                          
                                          
                                            
                                          
                                          When 
                                          viewing Aviat's new airplane, a pilot 
                                          has to remember several things. First, 
                                          the clipped wing version of the 
                                          Monocoupe, the 110 Special, was 
                                          originally supposed to be a pylon 
                                          racer with Johnny Livingston at the 
                                          controls and it's designed to fly that 
                                          way. Second, people were smaller in 
                                          those days. The forgoing facts mean 
                                          that both big wings and big cockpits 
                                          were unnecessary. The first time you 
                                          sit in the airplane, you'll also 
                                          assume they thought windshields were 
                                          unnecessary as what there is of it is 
                                          well above your head. 
                                          The cockpit is 
                                          narrow. Probably one of the narrowest 
                                          of any two place airplane being 
                                          offered for sale. That's just the way 
                                          airplanes were designed in the late 
                                          1920's. Aviat, to their credit, 
                                          however has come up with an 
                                          interesting solution: rather than 
                                          going with the original thick, wood 
                                          doors, they designed a nifty steel 
                                          frame door that's less than an inch 
                                          thick and adds close to three inches 
                                          to the shoulder and hip room. So, now 
                                          it's tight, but not uncomfortably so. 
                                          The door also hinges upwards with a 
                                          nitrogen assist cylinder that works 
                                          beautifully. It makes getting into the 
                                          airplane much easier than with the 
                                          original doors and does away with the 
                                          need for a jettisoning mechanism which 
                                          will be necessary when it is approved 
                                          for aerobatics. Still, doing some 
                                          stretching exercises would be a good 
                                          idea before trying to board. They say 
                                          a step is being designed, which should 
                                          help. 
                                          
                                            
                                          The cockpit also 
                                          has a thoroughly antique feel to it. 
                                          For one thing, the top edge of the 
                                          instrument panel is almost even with 
                                          the top of your head because of the 
                                          steep deck angle. More interesting, 
                                          the only part of the windshield that 
                                          isn't covered by motor is a tiny 
                                          sliver at either end of the slightly 
                                          concaved instrument panel. However, 
                                          even though the windshield is 
                                          virtually useless in the three-point 
                                          position, the airplane somehow doesn't 
                                          feel much blinder than many other 
                                          taildraggers. This is because the 
                                          fuselage tapers towards your feet just 
                                          after it goes past your shoulders 
                                          which moves the front door post 
                                          inboard giving amazing visibility out 
                                          the side windows. No, you can't even 
                                          remotely see ahead, but the view 
                                          angled out about 30° to the side on 
                                          which you're sitting is quite good. 
                                          The visibility the other way, across 
                                          the cockpit is also non-existent, 
                                          which brings up an interesting point: 
                                          When taxiing it takes the tiniest turn 
                                          away from your side, to uncover the 
                                          entire taxiway ahead of you. "S" 
                                          turning is not only unnecessary but it 
                                          doesn't work because you have to turn 
                                          really sharp, probably 60°, the other 
                                          way to see out the opposite side. 
                                          Ed Saurenman, 
                                          Aviat's Chief Designer/Engineer and 
                                          all around aviation junkie, lit the 
                                          fire on the IO-360 A1B6, pointed at 
                                          the control stick, indicating I had 
                                          command, and away we went. There were 
                                          no brakes on the right side but I 
                                          didn't miss them. The tailwheel is 
                                          moderately tight and the airplane 
                                          tracked exactly the way my feet moved. 
                                          No more, no less. With the exception 
                                          of having no idea what was on the 
                                          other side of the airplane, it was a 
                                          cinch to taxi. Almost like a go-cart. 
                                          We'll ignore the 
                                          first take off because the right door, 
                                          mine, popped open at about 60 mph and 
                                          I aborted the takeoff. Ed says they've 
                                          flight tested the open door up to 160 
                                          mph IAS, but I wasn't all that 
                                          interested in taking off with the door 
                                          hanging out at a 45° angle. In the 
                                          process, however, I got a good feeling 
                                          for the airplane's ground handling in 
                                          a less than optimum situation: besides 
                                          accelerating almost up to takeoff 
                                          speed with a door open and wind 
                                          hitting me in the face, I had Ed 
                                          Saurenman laying across my lap trying 
                                          to close the door. At no time did the 
                                          airplane do anything stupid. I was the 
                                          one who did something stupid in not 
                                          getting the locking pins completely 
                                          set. The next takeoff was more 
                                          successful. 
                                          
                                            
                                          The vernier 
                                          throttle (more on that later) doesn't 
                                          have to move very fast to get a 
                                          terrific reaction out of the airplane. 
                                          I eased the power in and got the 
                                          airplane rolling then pushed it the 
                                          rest of the way and held on. The 
                                          engine is exactly the same as in my 
                                          Pitts and we were carrying the same 
                                          number of people, but the acceleration 
                                          was easily half again what I see out 
                                          of my own airplane. I think I had 
                                          adrenaline pooling in my boots. 
                                          I was watching the 
                                          side of the runway out my window and, 
                                          as the tail came up, I didn't have 
                                          time to re-focus my eyes over the nose 
                                          before we leaped off the ground. But 
                                          this was not a lift-induced leap. This 
                                          was the ballistic launch which is part 
                                          of flying tiny airplanes with big 
                                          motors. What a rush! It would be worth 
                                          buying one of these things just to do 
                                          that over and over. 
                                          The instant we came 
                                          off the ground, the left wing came up 
                                          and I pressured it back down while 
                                          playing with the rudder to keep my 
                                          butt in the middle. The airplane 
                                          doesn't have a skid ball and doesn't 
                                          need one. Even though we were sitting 
                                          almost on the CG, it was amazing how 
                                          much you could feel the airplane skid 
                                          when it wasn't in trim. On every 
                                          takeoff the wing would could up and I 
                                          couldn't figure out why. Finally, I 
                                          asked Ed and he said it was because 
                                          that tank was empty and the airplane 
                                          was so sensitive to loading that wing 
                                          simply flew first. 
                                          Usually, I climb a 
                                          strange airplane out at a flat angle 
                                          to get better visibility but, since 
                                          we'd have to be dead level to see over 
                                          the nose, I just held it at 100 mph 
                                          and watched the ground rapidly 
                                          disappear out my side window. The 
                                          specs say the airplane will climb at 
                                          1700 feet per minute and I wish I had 
                                          timed it because that's what my Pitts 
                                          climbs at and this was going up 
                                          noticeably faster. The airplane is 
                                          definitely a rocketship! 
                                          As I pushed over 
                                          into level flight, the visibility got 
                                          better and better until it was almost 
                                          normal, but I had to duck my head to 
                                          look under the wing for side 
                                          visibility. Turns in either direction 
                                          felt much better, if I picked up a 
                                          wing to clear the area first. As I 
                                          played with the controls I could see 
                                          that they had done quite a bit with 
                                          the ailerons in trying to get away 
                                          from the traditional heavy, scratchy 
                                          feel of original Monocoupes. They'd 
                                          changed some linkages to give the 
                                          stick more mechanical advantage, but 
                                          were still limited in travel by leg 
                                          room. Ed said as soon as he got the 
                                          airplane back to the factory, they 
                                          were going to design a control stick 
                                          with a higher pivot point so they 
                                          could increase the mechanical 
                                          advantage through the system even 
                                          more. The pressures are acceptable, as 
                                          is, but everyone, Aviat included, 
                                          would like to see them lighter. 
                                          Ed had said it was 
                                          a "rudder airplane" but it wasn't 
                                          until I started messing with the 
                                          controls that I saw he wasn't kidding.
                                          As I was turning, I was 
                                          consciously trying to coordinate and 
                                          was paying special attention to what I 
                                          was feeling. There was a lot of 
                                          slipping and skidding I was 
                                          compensating for but it wasn't until I 
                                          tried separating the controls to do a 
                                          turn without rudder that I figured out 
                                          what was happening. Prior to flying 
                                          this airplane, I'd always thought the 
                                          Aeronca Chief to be the King of 
                                          Adverse Yaw, but it doesn't hold even 
                                          a very small candle to the 110 Special 
                                          in that area. Using enough aileron to 
                                          pull a wing up 15°, with out rudder, 
                                          results in the nose going the other 
                                          way while the airplane ignores the 
                                          entire process and continues straight 
                                          ahead indefinitely with the nose off 
                                          to one side. In a 15° bank, it would 
                                          absolutely refuse to turn without 
                                          rudder. Just tap the rudder, however, 
                                          and it would come around smartly. I 
                                          then found I could lock the stick in 
                                          neutral and put in the tiniest amount 
                                          of rudder and it would roll into the 
                                          nicest, most coordinated turns I've 
                                          ever done. Tap the rudder harder and 
                                          the airplane would snap into a bank 
                                          almost instantly. Old Johnny 
                                          Livingston wanted to turn corners and 
                                          this airplane would definitely do 
                                          that. The roll-yaw couple was by far 
                                          the strongest I've ever seen. 
                                          Let me make one 
                                          thing clear here: even though the 
                                          feeling that you have to constantly 
                                          play with the rudder is initially 
                                          strange, this is no way a negative. 
                                          It's just an unusual characteristic 
                                          you get used to in a few minutes and 
                                          you can fly along indefinitely with 
                                          your arms crossed while flying the 
                                          airplane just fine with your feet. 
                                          If you walk the 
                                          airplane back and forth with the 
                                          rudder then let go of the rudder, it 
                                          immediately locks up in the direction 
                                          it was pointed and sets up a fairly 
                                          steep spiral and it doesn't make any 
                                          difference whether you freeze the 
                                          rudder or not. Again, not a bad 
                                          characteristic, but one worth noting. 
                                          After they got the 
                                          airplane back to the factory and 
                                          listed all the comments made by 
                                          journalists and prospective dealers 
                                          who had flown the airplane they made a 
                                          number of significant modifications. 
                                          Their goal was to make the airplane 
                                          handle in a more normal manner. The 
                                          mods included increasing the size of 
                                          the vertical tail (a big percentage 
                                          increase but you still can't see the 
                                          difference). They put spades on the 
                                          ailerons and changed the linkage to 
                                          give more mechanical advantage. I 
                                          talked with Ed about the changes in 
                                          some detail and he says it completely 
                                          eliminates any of the airplanes 
                                          "strangeness" and any pilot would find 
                                          it to be very normal feeling. He also 
                                          said the ailerons are not only much, 
                                          much lighter, but the already spiffy 
                                          roll rate was even higher. Alright! 
                                          I couldn't check 
                                          the pitch stability because the bungee 
                                          trim system was out of whack and was 
                                          constantly biasing the elevator 
                                          slightly. The elevators, however, felt 
                                          completely normal. 
                                          The airplane is 
                                          really fast for the power. We were 
                                          indicating right at 170 mph at 23 
                                          square and Ed says he flight plans 175 
                                          mph and always gets it. He also says 
                                          he thinks the airplane has another 20 
                                          mph in it. Just prior to leaving the 
                                          factory, a mechanical glitch had 
                                          forced them into replacing the 
                                          Hartzell composite two-blade with a 
                                          conventional, and shorter, metal prop. 
                                          Ed says the instant they did that they 
                                          lost 8 knots in cruise. Also, since 
                                          its Oshkosh introduction, the airplane 
                                          has been under going constant 
                                          modification including lowering the 
                                          cowl line nearly 3 inches. This 
                                          changed the windshield angle and, when 
                                          Ed and I got together, the fairing 
                                          strip at the top of the windshield was 
                                          still the original and had a huge 
                                          amount of drag-producing gaposis. He's 
                                          confident they'll have the airplane 
                                          cruising effortlessly at 190 mph or 
                                          more before serial production begins. 
                                          I was interested in 
                                          how the airplane would stall, so I 
                                          chopped the power and held the nose 
                                          slightly high. Then, I pulled and 
                                          waited. Then, pulled and waited some 
                                          more. The airplane didn't want to slow 
                                          down and, as it came down through 85 
                                          mph, it REALLY didn't want to slow 
                                          down. Eventually somewhere in the high 
                                          60's, with little or no buffet, those 
                                          tiny wings suddenly unloaded, the nose 
                                          fell and it rolled off on a wing. It 
                                          has a very clean break with not a hint 
                                          of a mush. The instant I released back 
                                          pressure, however, it was back flying, 
                                          even before I brought the power up. 
                                          The book stall speed is 68 mph and the 
                                          wing is the good old fashioned Clark 
                                          Y. 
                                          When stalling the 
                                          airplane I was careful to keep things 
                                          centred as they haven't done the spin 
                                          test series yet. For that reason we 
                                          couldn't do any aerobatics. This was a 
                                          disappointment because Woody Edmunson 
                                          in his 110 Special "Little Butch" 
                                          helped set the stage for serious 
                                          aerobatics in the late 1940's. Once 
                                          the spin tests are completed, however, 
                                          the airplane will once again be able 
                                          to dance, which I imagine it will do 
                                          really well. I couldn't measure the 
                                          roll rate, but when you put your 
                                          shoulder into I'd guess it at 
                                          something around 150°/sec. 
                                          
                                          
                                            
                                          
                                          As we 
                                          came back into the pattern, I was 
                                          feeling much more comfortable in the 
                                          airplane because I found the 
                                          rudder-only thing made it much easier 
                                          to handle. However, as we slowed down, 
                                          I once again had to put some aileron 
                                          into the mix. Ed had said to use 110 
                                          mph for the first approach (100 is 
                                          normal) and I found it dead simple to 
                                          put it on an IAS number and keep it 
                                          there. It was terrifically 
                                          speed-stable throughout the approach 
                                          even though we weren't using trim. 
                                          Visibility isn't an 
                                          issue during the approach. Not at that 
                                          speed, anyway. The runway sits in that 
                                          tiny windshield, which doesn't seem 
                                          that tiny after the first hour, and 
                                          lets you drive right down final. It 
                                          was about half way down final that I 
                                          got yet another surprise: the airplane 
                                          really wants to glide. I had expected 
                                          it to fall out of the air the second 
                                          the power came back and the prop 
                                          flattened out, but it didn't. In fact, 
                                          I was coming in too high to hit the 
                                          numbers. 
                                          As we floated down 
                                          the runway, I started flaring and, as 
                                          the nose came up, I automatically 
                                          shifted my eyes to the runway edge 
                                          visible in the windshield sliver at 
                                          the edge of the instrument panel. As 
                                          the nose came up further, my eyes kept 
                                          tracking back until I was once again 
                                          looking out the door window. It all 
                                          seemed very natural, although I don't 
                                          like looking at just one side of the 
                                          runway to land. I prefer glancing at 
                                          both. 
                                          
                                            
                                          I held the airplane 
                                          off and it floated and floated, then 
                                          gently touched and hopped a little in 
                                          three-point. I didn't rush the 
                                          throttle, but waited to play with the 
                                          rudders as it slowed down. Again, the 
                                          airplane followed my feet and, with 
                                          the runway edge so clearly in sight, 
                                          it wasn't hard to see the changes 
                                          needed. I was using very little rudder 
                                          and the airplane was giving no 
                                          indication it would do anything I 
                                          didn't ask it to. 
                                          Power up, we 
                                          scrambled back into the air. What a 
                                          blast! If the sun wasn't just about to 
                                          set, I could have kept doing that 
                                          until we ran out of gas. 
                                          
                                            
                                          On the last 
                                          landing, I was a little slow getting 
                                          the tail down and we kissed gently off 
                                          the mains setting up a little skip. 
                                          Not wanting to drop it in, I thought 
                                          I'd ease in just a hint of power. I 
                                          got the hint of power in but forgot 
                                          about that stupid vernier throttle (a 
                                          friend of mine is taking up a 
                                          collection to fund AAVT, Aviators 
                                          Against Vernier Throttles) and I 
                                          didn't get the hint out until it 
                                          touched again. And again. And yet 
                                          again. Do I get to log all those 
                                          landings? Through out the entire 
                                          embarrassing episode, the airplane was 
                                          absolutely honest and not once did I 
                                          feel any centrifugal force against my 
                                          seat telling me the airplane was 
                                          trying to turn hard. I gave it every 
                                          opportunity possible to take a chunk 
                                          out of my behind and it just trucked 
                                          ahead and did it's thing. 
                                          I don't know if the 
                                          Aviat 110 Special is indicative of all 
                                          such Monocoupes or not, but I was 
                                          impressed by its ground handling. It's 
                                          honest and direct and is very, very 
                                          much like a Luscombe, yet another 
                                          airplane with an undeserved 
                                          reputation. The only reason a pilot 
                                          would have serious trouble with it 
                                          would be because he over controlled it 
                                          and didn't realize the airplane was 
                                          only doing what he told it to do. The 
                                          lack of visibility and the rudder 
                                          would take a little getting used to 
                                          but that's all minor stuff. 
                                          The airplane is 
                                          really intriguing in that it is an 
                                          honest to goodness modern antique that 
                                          is useable. It has four hours worth of 
                                          gas and can shuffle along at a healthy 
                                          clip and let you arrive in style. 
                                          Here's an airplane for the antique 
                                          buff who wants the appearance and fun 
                                          of an antique but wants to go places 
                                          at the same time without worrying 
                                          about something breaking and letting 
                                          him down. It's a new antique for the 
                                          new millennium.  
                                          
                                            
                                              
                                                
                                                  Aviat 
                                                  Monocoupe 110 Special 
                                                  Power Plant 
                                                  Lycoming IO-360 A1B6, 200 
                                                  horsepower 
                                                  Wing span: 
                                                  23'10" 
                                                  Overall 
                                                  length: 19' 10" 
                                                  empty 
                                                  weight: 1160 pounds 
                                                  Gross 
                                                  Weight 1624 lb. 
                                                  Vne: 207 
                                                  mph 
                                                  V cruise, 
                                                  75%: 173 mph 
                                                  Vstall 68 
                                                  mph 
                                                  Rate of 
                                                  climb: 1700 fpm 
                                                  Range @ 
                                                  cruise: 475 miles 
                                                  Fuel Total: 
                                                  42 gallons 
                                                  Baggage: 20 pounds 
                                                 
                                               
                                             
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