Mudflap wrote: ↑
Tue Oct 06, 2020 10:50 am
Totally relevant I would say.
I might have been the one to mention the book a while ago.
Callum is a former colleague and one of the best engineers I've worked with.
He's had spells in engine design at TMG (Toyota) and Mercedes HPP.
I've been to a couple of his lectures on ww2 engine design and all I can say is the book is a must have for anyone with an interest in the field.
In an oddly convergent coincidence, Calum has posted some excerpts from his book on
a WW2 aircraft forum, & on page 79 he discusses the crankshaft details of the Jumo V12
engine, noting that it featured through drilling with plain big-end bearings, pressure-fed from
the end, glowingly describing it as "...decades ahead of its time " & "...probably prompted by the
high cylinder pressures of the diesel engines which Jumo had already become famous for..."
Yet as shown in a recent crankshaft design thread, these features had in fact been in use
by Napier in their 'Lion' W12 engine for "decades" already, (& given that Napier & Jumo
were on 'friendly' business terms, it seems probable that Jumo would've had a Lion to
inspect, just as Napier's had access to Jumo 2T diesel-tech - indeed buying a licence
to manufacture them & post-war utilizing its design in their big 'Deltic' diesels) - so it is
perhaps not unreasonable - to sheet home these design qualities to the proven British unit.
Dr Moreau sez..
"Who breaks the law... goes back to the House of Pain!"