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Originally posted by Hrolf Hakonson
The DB-601EM isn't completely historical, since the OTL -601 didn't have MW-50 capability.
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I did say it was not completely historical, yes?
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Probably because you invent outlandish engines that would never have worked in production?
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Whereas here all I'm doing is using a slightly larger supercharger on an existing engine.
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Originally posted by Red Admiral
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Probably because you invent outlandish engines that would never have worked in production?
I can't remember any of those engines. The big coupled V12s which were historical and did actually work.
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Whereas here all I'm doing is using a slightly larger supercharger on an existing engine.
Then why no increase in weight, especially to cope with the extra gross power being produced. The DB605A series were managing to get a power to weight ratio of 0.84hp/lb if you look at the altitude rating (1355hp at 5700m for 730kg). For this super-duper DB601 you're managing 1.06hp/lb even before you add lots of MW-50 and extra boost for even more power (somehow). You've got to ask yourself why DB bothered to design the 605 if such performance was possible with the 601? If you're getting up to this sort of power at altitude you need a redesign of the 601 to cope with the increase in gross power (more power produced at the prop and the supercharger).
Looking at the Merlin 25 (two speed but single stage again) you're getting 1250hp at 18000ft which equates to a power/weight ratio of 0.85hp/lb - and that's with 18lb boost.
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As racing engines, sure. So did the DB-601R. That doesn't mean it's produceable or useful as a service engine.
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