My '65 7ECA has one, and it greatly reduces the need for holding right rudder in flight and during the takeoff/climb portions of flight. It's roughly a 5-inch rounded (oval) shape that extends about 1" past the trailing edge of the rudder at the middle of the tab, but is rounded so that the top and bottom edges of the oval are basically even with the trailing edge. No clue if that is "stock" or was added later on. (Though there is no log entry for an addition, so I suspect was installed at the Champion factory.
Keep in mind that my plane has the almighty 100 HP O-200, so your puny O-235 might not need it as badly... (eye-roll) But in all seriousness it does help a lot. Amazing how even a little engine generates enough torque / p-factor to wear out a grown man's right leg...
that's what i was wondering about, how much it's needed for our smaller engines. i was thinking I'm jut not yaw-aware enough since the plane sat for two years and I didn't do much GA flying but if you guys say it helps then I'll put one on and see.
I would have bet money my plane did NOT have a fixed tab on the rudder but I just looked at some pics.
Surprised I don't hit my face on it preflighting the tail wheel.
My plane requires right rudder in climb and left rudder on descents.
'65 7ECA with 150hp