Looking for sounds to power the Heinkel HE-51

Back to the original post; I was fortunate to see 'Brutus' perform a few years ago and even though it's a faked car (American LaFrance 1904 fire truck chassis with BMW VI engine and custom bodywork, and no one wants to tell when it was made..) it still looks and sounds very impressive! 750 HP through a chain to very narrow tires...

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FentiFlier1 said:
45 liters V12? That's BIG. Do you have any more specs for the BMW, Huub? I would be very interested to see it. :)
Click to expand...

As you can see in the car, the engine was quite large (more than 1.10 meter in height). As it had a very long stroke (190 mm against 140 mm for the Kestrel) the number of revolutions of this engine must have been very low (due to the critical speed of the pistons!).

Wikipedia has some additional information about this engine

http://en.wikipedia.org/wiki/BMW_VI

Cheers,
Huub
 
Thanks Huub! It makes me realise my aero-engine knowledge is rather poor.

When I read your post stating 45L, my first fought was "boat engine!" :)
 
Thanks for the picture Ferry. That is interesting information! As said, based on the lenght of the stroke I already expected the maximum number of revolution was pretty low. But with 1650 rpm it is even much lower than I expected!

I also noticed the displacement from the engine of Brutus is higher than a standard BMW VI (an additional 2 litres!), so the engine most likely has a bigger bore.

Cheers,
Huub
 
Had a look through my old photos on my external HDD and found some more info on this sheet:

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Seems even the museum itself is providing conflicting information.. :isadizzy:

And for those still using the good old imperial unit system: 46.5 liters equals 2837 cubic inch. Still not as much as the R-4360 but still quite impressive!

Yet even the mighty R-4360 is dwarfed by this beast :

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This is a Russian Zvezda Type M-503A-2 engine, a 42-cylinder water-cooled diesel engine (Six rows of seven cylinders) with a displacement of 147.1 liters (Or 8,976 cubic inches!) delivering 4,000 hp at 2,200 rpm.
Originally designed for a long range bomber but only used in fast boats after WW2. A Bigger 56(!!) cylinder version was made as well (Eight rows of seven). Both proved unreliable.
The engine weighs a mere 5,400 kilograms, or 12,000 pounds... :isadizzy:
 
OK, so:

Wasp Major: 2,5L per cylinder
Zvezda Engine: 3,5L per cylinder
BMW VI: 3,75L per cylinder

The He-51 must have been like flying a Harley. I'm sure Hagrid would like it...
 
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