New Catto Prop Test Flight – BIG Gains (and Unexpected Problems)

Back in the air after months on the ground, I put my new Catto propeller to the test in my COZY MKIV—checking performance, fuel flow, climb rate, and top speed. But things don’t go exactly as planned… from a significant mysterious loss of speed to ongoing brake issues that make landings a challenge. Follow along as I run real-world flight tests, troubleshoot unexpected problems, and dial in the aircraft ahead of an upcoming cross-country trip. If you’re into experimental aircraft, homebuilt aviation, or performance tuning, this one’s for you. ✈️ What you’ll see: First flight after maintenance Catto prop performance gains (RPM, climb, speed) Fuel flow testing at multiple altitudes Wheel pant drag impact (huge difference!) Troubleshooting uneven braking issues 👉 Stick around to see if the upgrades were worth it. 0:00 Intro 1:05 Preflight and Wheel Pants 2:01 Valve Cover Leak Check 2:36 Cowl Install 2:54 Takeoff 4:29 Hot CHTs and Landing 5:09 New Brake Results 6:12 Takeoff 7:29 Hot CHTs Again 7:55 Traffic and Landing 9:16 Takeoff 10:12 It's Really Slow 12:38 Landing at Lorain 13:51 Takeoff 14:33 Landing 15:15 Bleeding Brakes Again 15:35 Fitting Wheel Pants 16:38 What I Did 18:32 Test Plan 20:47 Takeoff 22:33 High Speed Test 23:09 Fuel Flow Tests 24:07 High Speed Tests 25:40 Higher Altitude Tests 26:34 Landing 27:45 Summary of Propeller Tests 28:55 Ongoing Brake Issues No content in this video should be taken as flight instruction or advice. Refer to your aircraft POH and consult your CFI. This video has been edited for time and content, and context may be lost or distorted. This video is for entertainment purposes only. #GeneralAviation #ExperimentalAircraft #HomebuiltAircraft #CattoPropeller #AviationLife #PilotLife #FlightTest #Kitplane #COZYMKIV #AviationYouTube #Flying #AircraftMaintenance #GA #PilotVlog