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#11
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The BMW801 and the ASh82 were manufactured from the same patents sold from America (Wright, i believe) to Germany (BMW) and Russia (ASh) around 1935.
They have the same roots and only minor modifications separating them. BMW needed a stronger radial design around 1835 as they were forced to stop the production of their V12 engine by the air ministry, the V12 patents were sold to Allison and became the V1701, Russia (Klimov) also used this BMW patents and build from them the VK107. Today on a Yak-3 or Yak-7 you can still exchange a VK107 with a Allison V1701 easily, as i.e. the original engine mounts fit perfectly for both engines. Just as a interesting information.
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Win 7/64 Ult.; Phenom II X6 1100T; ASUS Crosshair IV; 16 GB DDR3/1600 Corsair; ASUS EAH6950/2GB; Logitech G940 & the usual suspects ![]() Last edited by robtek; 05-18-2012 at 08:14 AM. |
#12
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Yeah your right, my bad. Though apparently at least one (Rudy Frasca's) has an R2800.
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#13
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the differences in sound are given by a combination of factors, here are some:
1) exhaust note: a T-6 with short exhaust will sound a tad louder and crispier than and a Harvard with longer exhaust. Same goes for similar engines installed of different machines: flame dampeners and exhaust design all contribute to the different sound. 2) propellers: a two bladed constant speed propeller will sound very loud when its wingtips go supersonic, whilst a 3 or 4 bladed prop will be more efficient and less prone to that. That's why a T-6 is louder than a Mustang. 3) aerodynamic features: the "Mustang howl" that we all know is caused by the angle and shape of the gun ports, which work as a whistle at certain speeds and angles. Same goes for the design of other aerodynamical features of the plane. 4) mechanical and structural features: superchargers, turbochargers and other similar features all contribute to the sound. The whizzing noise in the Bf109 is caused by the supercharger impeller fan. Airframe resonance is surely another thing to keep into account: the shape and construction technique might give the plane a different resonance, but again this is something for fine listeners. 5) last but not least is the kind of engine! The combination of RPM, number of cylinders and setup of the crankcase all contribute to the distinct rhythm of an engine. So no, an ASh82 won't sound exactly like a BMW801 because there's different exhaust curves, different engine mounts, different cowls, different idles. It's the same configuration, but it's no cigar. |
#14
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#15
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The Bayerische Motroen Werke (BMW) based in Munich, were manufacturing Pratt and Whitney radials under license in the 1930’s and used this experience to develop its own twin row engine.
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#16
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hey does anybody know if we got binaural sound or just stereo?
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#17
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Shhh raaaid, go open a new thread don't pollute this one.
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#18
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This game will really take with the return of the butcher to the skys
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