Michel Lemieux wrote:
James.........tks, you did make my Monday

)
This answers a long time question I had. It did fly in Japan.
Yes, it most certainly did. You should have asked that question a long time ago, I could have told you that! I have a picture of it flying in an Airshow in Japan in about '73 or '74 in an old Air Classics magazine I have from that time period. It didn't fly long though. IIRC, I believe it only flew once or twice in Japan before it was permanently grounded.
Also, if you don't have it, you should get the book, "Aero detail 24, Nakajima Ki-84 Frank". It is from a series of detail books, the best ever made and usually has tons of color pictures of surviving examples. It originates from Japan, and is unfortunately out of print. The entire Aero series were difficult to find in North America when they came out and were only sold for maybe 7 to 10 years before they all dried up. In the book, it has numerous pictures of the Frank in the air, including some shots from Japan. It gives all of the details of it's sale, restoration and flying in Japan. It has a TON of very detailed color photos of the plane during it's display on the ground during a public exhibition, including pictures of it's uncowled engine, and most major systems. It's a MUST HAVE book. The entire series is superb, and they usually concentrate on Japanese and German warbirds. When the book was new, they sold for $ 50 a pop. I don't know how much they would sell for these days, if you can find them.
I too, am waiting for that elusive film and/or video of the Frank in flight. I've never seen what it looks like in flight.