Engine Running Evening

Well, today I had a chance to play with and run a couple of my OK Cub engines. I ran an .049 with back mount, .074, and .099. Started with the .074. It is low in compression and was giving me starting fits, so out came the electric finger.... Took a few tries to get it to fire. But when it did, it ran poorly. SO I swapped the needle for that of the .049. Turned it out 3 turns, primed it in the exhaust port, hit it with the starter and it ran steady. I am going to say as well as one would wih that kind of compression. It seemed like it is not a big powerhouse, but it ran. Also to note, this one had a 7 x 4 yellow Tornado propeller, so things may have been different if I downsized it to a 6 x 3. From there I mounted up the .049. I put its needle back into it, filled the tank, primed it and tried flipping it. It had good compression. However, it started, but low power, and just blubbered slowly like it was trying to run in reverse. So again, I used teh starter, and it fired right up on 3 turns of the needle. It was wearing a DAL Prop 5045. So it fired up strong with a good high pitch, then sounded a bit rich. So I tried turning the needle in slowly. Did not seem to do much, but it was a good steady run. That is when I went to turn th eneedle in a bit more, but to my amazement, the needle was all the way in, and it was running. So I stopped it. I primed it, and hit it with the starter with the needle fully closed. Fired right up and ran as it did before stopping. Immediately after, I mounted teh .099. Again, not a powerhouse, but a good steady running engine. Had a fun cool evening outside. These things sure do put out quite the oily mess.... So, I will be looking for a new needle to use in the .049 and .074 engines. I have one more Cub to try this weekend with a Wen Mac, if it is decent out. I will updat this as it comes along. In the pictures, the yellow prop arc is teh .074, and the green is the .049.