Potez 12Dc engine information

fastmongrel · Jun 23, 2020

I am building a 1/72 scale model of the French Arsenal VG33 fighter. I am doing some online research and I have come across several mentions that the prototype known as the VG30 was designed to use the Potez 12Dc engine. The engine had problems and was swapped for a Hispano 12y.

I have googled this engine but there seems to be nothing written about it. I know Potez were working on air-cooled inverted engines before ww2 so I am guessing the 12Dc was an air-cooled inverted V12.

Has anyone got any information or photos of the engine maybe something is written in French. I would like to build the VG30 prototype with the originally specified engine.

kmccutcheon · Jun 23, 2020

fastmongrel said:
I am building a 1/72 scale model of the French Arsenal VG33 fighter. I am doing some online research and I have come across several mentions that the prototype known as the VG30 was designed to use the Potez 12Dc engine. The engine had problems and was swapped for a Hispano 12y.

I have googled this engine but there seems to be nothing written about it. I know Potez were working on air-cooled inverted engines before ww2 so I am guessing the 12Dc was an air-cooled inverted V12.

Has anyone got any information or photos of the engine maybe something is written in French. I would like to build the VG30 prototype with the originally specified engine.

Nothing on the 12Dc, but this on the 12D...

MiTasol · Jun 24, 2020

Interesting engine. A little bigger than the Pratt 985 with about the same power. It must have been a very light fighter to have any performance.

fastmongrel · Jun 24, 2020

Thanks for the information I have looked for anything about Potez engines and not seen that.

That can't have been powerful enough for a 5,000 pound aircraft to do 330 mph it must be a different smaller but similar engine.

Does anyone know how to do a search for French language information on Google I am a bit of a dunce when it comes to the interwebs. I don't speak French but I know enough to see the correct information.

brianwnz · Jun 27, 2020

Try searching on the link below for a range of French aircraft (amongst others) magazines - downloads are free and I've had a lot of good information from it.

Gallica

I found the Potez 12 D searching for "Potez Type 12 D" fairly easily - see how you go!

fastmongrel · Jun 27, 2020

brianwnz said:
Try searching on the link below for a range of French aircraft (amongst others) magazines - downloads are free and I've had a lot of good information from it.

Gallica

I found the Potez 12 D searching for "Potez Type 12 D" fairly easily - see how you go!

I found a picture the 12D but no mention of the 12DC. Perhaps it was only a paper engine

jschreiber · Oct 4, 2020

fastmongrel said:
I found a picture the 12D but no mention of the 12DC. Perhaps it was only a paper engine

Hello
The only reference to the Potez 12Dc I found is in the "Moteurs à pistons aéronautiques français" (Bodemer et Laugier, Docavia, Editions Larivière, 1987). It was a 12D with supercharger, 610 HP, intended to be build for the Arsenal VG30 by the Lorraine engine company, at this time owned by Henry Potez and Marcel Bloch.
Have a nice day

Potez 12Dc engine information

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