I.M.A.M. Ro.57 with four guns

[Jan den Das]

Some time ago I have seen in an Italian book with assault aircraft a picture, further no information, of a Ro.57 or Ro.57 bis with four guns.
I can remember that it has the normal two 12,7mm machine guns on the nose, but also under the nose two 20mm guns.
Who has more information, was this only a prototype or a small batch, pictures etc.?
Was it a Ro.57 or an Ro.57bis.
I cannot remember the book.
Jan

 

[Silencer1]

Hello!

In the old, although very comprehensive, book "Italian Civil and Military Aircraft" by J.Thompson dive-bomber version of Ro.57 - "bis" has been mentioned , as equipped with additional 2x20 mm cannons.
Is it what you looking for?

 

[Jan den Das]

Hai
Thanks for the information and this is what I expected, that it was the Ro.57bis.
I am looking for more details/pictures etc. concerning how and the exact place of the 20mm guns.
How many of this version where build?

Jan

 

[Silencer1]

There is an article http://www.airwar.ru/enc/fww2/ro57.html here (on Russian) with Ro-57bis 3-view (source unknown), which didn't feats in any photos of Ro-57bis I already seen.
As well - article on Italian http://www.giemmesesto.org/Documentazione/Aerei/ImamRo57.html.

Unfortunately - I don't see additional cannons anywhere in these sources...

 

[Jan den Das]

That drawing is new for me, it shows the position of the 20mm guns.
Just what you mention on both sites no pictures of the Ro.57 with these guns.
I hope some one else have something.
Thanks for your help

 

[Jan den Das]

I just found this drawing

 

[elmayerle]

Does anyone have information as to just which 20mm cannon were used?

 

[Apophenia]

Due cannoni da 20 mm MG 151/20 presero il posto delle mitragliatrici ...

https://it.wikipedia.org/wiki/IMAM_Ro.57

 

[elmayerle]

Ah, thank you. That will help in modifying my Special Hobby kit to add those.