Recent content by sibboh

I found this power chart

Bore, stroke, displacement and diameter were the same than that of the Piaggio P.XII. I don't know the weight. Bore: 146 mm Stroke: 176 mm Displacement: 53 L Diameter: 1410 mm I have no manuals about RC.45. But i took some data from different "Aerei nella storia" magazine numbers. However some...

No, unfortunately. I did not have time to go looking for him.

In fact! I also do not think so. Then, recently, I understand that. And I got confirmation. Miyazaki is passionate about airplanes. Especially the golden age of the aircraft.

Searching on the web i found this:

I know that Piaggio P.XIX used 92 octane fuel.

I didn't want to do a parallel, but only emphasize the fact that, as for the overboosting (apart takeoff), we have no explanation about the conditions (limits, altitudes, power output etc...). We have only a power chart. I doubt that they included an incorrect or useless power chart. So i wanted...

However early versions of the Merlin already had a high pressure and rpm, but using 87 octane fuel. And the various italian engine projects and prototypes, some powerful, after 1940 didn't have the same high rpm and the same high boost of the first Merlin. So there was much leeway. Even without...

At left, the "Spauracchio" that is the ensign of the 22º Gruppo of the Italian Air Force. At right the scarecrow in the Miyazaki movie "Howl's Moving Castle".

OK. But Germans (and i think also Russians and Japs) had the same fuels problems.

Concordo sull'ultima tua frase. Hai ragione non c'è altro nel testo. Solo i grafici delle potenze. In realtà non solo quelli però. Il manuale ci dice anche a pag. 25 che la velocità di rotazione del motore massima è di 2400 rpm, e quella eccezionale (per non più di 30") è di 2590. Il decollo...

Thanks Bretoal! I am very interested in the French engines and about the arguments you're talking about.

For the first part i agree with you. Per la seconda parte si parla di decollo. Specificamente decollo. Scusami, ma ti ho voluto istigare apposta. Comunque non capisco perchè il grafico segni altre potenze con altre pressioni d'alimentazione e rpm se poi il motore non può raggiungerle (non tutti...

Now i post a comparison chart between Fiat A.74 and different R-1830 ( -9, -11, -13, -35 ) versions between 1936 and 1940. We see the R-1830 improvement. And its boost improvement. There are some problems with different data versions. But I hope it is understood the meaning of my speech.

The Fiat A 74 dry weight was (A.74 manual) 590 kg, that is 1301 lbs. And not 1257lbs. The Piaggio P.XI dry weight was (P.XI manual) 700 kg, that is 1543 lbs. And not 1433lbs. Alfa 135 displacement is 49.722 liters (a double Bristol Mercury) and not 48.2 liters. Its weight was 990 kg, that is...