Amodel Yak-9P

[Dark Green Man]

I would not recommend the drawings in Yak Fighter In Action as a reference.
those are some of the worst drawings of Yak-9's I've ever seen.
instead I would recommend :

Yak-9U & P
by Robert Panek
Mushroom Model Magazine Special (Yellow series)
no. 6119
ISBN 83-89450-27-5
or ISBN 978-83-89450-27-2

and

Jak-9P
by Luranc Zbigniew
Skrzydla w Miniaturze 20
Wydanictwo Avia-Press Gdansk 1999
ISSN 1234-4109
ISBN 83-902964-3-8

the drawings in both of these books are made from measurements of an actual surviving sample of the aircraft.[/color]

[John Thompson]

Thanks, DGM, but I wasn't referring to the drawings in "Yak Fighters In Action", I was talking about a photo of a Hungarian Yak-9P, taken from the side, which could be resized to 1/72 scale to compare with the kit parts. I have both of the references you recommend, but I did not want to rely on anyone's drawings, I wanted to compare with an actual photo, if possible.

John

[Graham Boak]

Beware of sizing models from scale photographs.  These will introduce parallax errors, shortening distances at the edges of the field of view, thus making centrally-positioned items appear larger.

[Dark Green Man]

Hi , John.
your idea sounds better than a comparison of scale drawings.
although those in the two books I mentioned are based on measurements from a real original surviving airframe.(possibly both?)

Hi , Graham.
it is nice to have you as a member of this forum.

[Graham Boak]

Thank you.

I don't know if you move in those circles, but there has recently been considerable discussion (quite heated, unsurprisingly) because one enthusiast took measurements from photographs and convinced himself that Nakajima-built Zeros were a different length than Mitsubishi-built ones!  With a different fin, too.  He took a lot of convincing - though eventually he was, and was gracious enough to say so.  There was a lot of wasted time and aggravation.  I could see the possibility of such a situation arising here.

There are times when photogrammetry can help resolve issues of aircraft shape, but you do have to be very very careful.