Quote:
Originally Posted by Catfish
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In an older book from 1920 the only german 8 cylinder engine for planes i found was the "Daimler engine" (no further designation in the book) with 230/240 PS, 8 cylinders, 160 mm bore, 170 mm stroke, 670 kg, 2,85 kg/PS, fuel consumption 55-57 kg, oil consumption 6 kg, 1100/1200 rpm.
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Hi Catfish!
Your description fits early 8-inline Daimler-Mercedes engine, sometimes refered as J8L.
There was another 8-inline designated Mercedes D.IV, design related to the ubiquitous Mercedes D.III.
Engine in question is Benz Bz.IIIb family, a V8 engine inspired by Hispano-Suiza (not a copy).
195 hp model was reported to have 125 mm bore and 140 mm stroke, 225 hp at 1700 rpm.
Benz Bz.IIIbv was a bit larger engine, 135 mm bore and stroke, 200 hp at 1800 rpm, 275 hp at 2000 rpm, geared 19:29.
At the second Adlershof fighter competition in May/June 1918 several prototypes used such engines:
- Albatros D.X 2206/18 W.Nr.4914 ............ Benz Bz.IIIbm
- Aviatik D.III 3350/18 W.Nr.10012 ........... Benz Bz.IIIbo
- Aviatik D.III W.Nr.10005 ....................... Benz Bz.IIIbo
- Aviatik D.IV W.Nr.10008 ....................... Benz Bz.IIIbv
- Fokker V.27 W.Nr.2734 ......................... Benz Bz.IIIbo (or Bz.IIIboü)
- LFG Roland D.VII 224/18 W.Nr.3780 ........ Benz Bz.IIIbo
- LVG D.IV ............................................ Benz Bz.IIIbo
- Pfalz D.XIIa ........................................ Benz Bz.IIIboü
Fokker V.30 W.Nr.2737 with Bz.IIIbm geared engine was sent to Adlershof after the competition.
Armoured Fokker V.37 was also equipped with a Bz.IIIb engine.
Bz.IIIb had vibration problems so BMW.IIIa was the preferred fighter engine.
Regards,
Yavor