I recognised the prop as a Master Aircscrew but the size wasn't obvious. I think you're still a bit overpropped on a 5.5x4. It may turn it on the bench but I think it will be a bit unhappy...
Here's my VA Elfin 0.25-the very one used for the MEW review, with a DC 5-1/4x 3-1/2 attached. [a prop which goes equally well on the VA Bambi and Frog 0.25cc miniatures}....I was slightly out in my publication estimate of late 1990s-it was published in MEW #69 ( Nov2000-Jan 2001)
ChrisM
'ffkiwi'