davebender
1st Lieutenant
So did DB605 and BMW801 engines. Why is DB603 engine being held to a higher then normal quality standard?
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Jumo210 entered production during 1935. Junkers began working on larger Jumo211 the same year.
DB600 engine factory was constructed during 1936. Daimler-Benz began working on larger DB603 engine the same year.
Why did BMW require a lengthy vacation before beginning work on next generation air cooled radial?
I don't know either. But I do know that the RLM did not want to increase production until the problems were solved. Similar story with the BMW 801. The DB 605 is different though: they merely restricted the ata and went on with full scale conversion of 601 to 605.So did DB605 and BMW801 engines. Why is DB603 engine being held to a higher then normal quality standard?
BMW-801D did not have had reliability issues after October 1942, some reading here.
I don't know either. But I do know that the RLM did not want to increase production until the problems were solved. Similar story with the BMW 801. The DB 605 is different though: they merely restricted the ata and went on with full scale conversion of 601 to 605.
Kris
Must have been a low priority project. Otherwise they would have switched to BMW801 design before 1939.
And about 5-6 to make it reliable, from start of design to action.It normally took 3-5 years to bring an engine from first sketches to production.
Must have been a low priority project. Otherwise they would have switched to BMW801 design before 1939.
1940.No it wasn't, but the cooling problems couldn't be solved and this engine was in the air (1938/1939) different for example as the DB 604!
Through the cooling issues BMW started new with the Bramo 329 and the knowledge of the the BMW 139!
This resulted in the BMW 801.
Edit:
At which time was the first DB 603 in the air?
The 139 was not an 18-cylinder engine but a 14-cylinder. They just used a lot of parts from the 132.The development of the BMW 139 (two 132 as a double) was beginning at 1935!
The 139 was not an 18-cylinder engine but a 14-cylinder. They just used a lot of parts from the 132.
There are conflicting accounts of the BMW 139 - some claim it to be an 18 cylinder engine and others, a 14 cylinder engine. I lean towards the 14 cylinder interpretation and consider the BMW 801 to be a further development with various changes, such as the inclusion of a two speed supercharger. It would be interesting to know to what extent, if any, features from the Bramo 329 were adopted.