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How many manufacturers were there of the Merlin?
I saw a special about Packard and the Merlin. How they built it there way because they felt RR tolerances were to lose for the Packard factory.
If this was the case then, parts were not interchangeable?
Ford England is where the tolerances issues came about.
The issue that Packard had (and resolved), is that British blueprints were different than what American manufacturers used.
You forgot longer lasting, quieter, smoother and better lookingSpitfire XVI's had packard merlins.
they were often faster, tougher and longer ranged than plain old RR merlin variants
your correct, i did !You forgot longer lasting, quieter, smoother and better looking
DudeAnd stays crunchy, even in milk.
And stays crunchy, even in milk.
Old running joke on here my friendHearsay!
Nothing to chose between any sourced Merlin of a similar standard build according to Alec Harvey-Bailey, R-R engineer.
Eng
Spitfire XVI's had packard merlins.
they were often faster, tougher and longer ranged than plain old RR merlin variants
A book about Canadian units indicated the Merlins in the Mk XVI proved to be rather less reliable.they were often faster, tougher and longer ranged than plain old RR merlin variants
A college professor I knew flew P-51's in WWII. He said that there was noticeably lower vibration with RR Merlins than with Packards, which he attributed to the RR craftsman approach of selecting pistons individually so that they all weighed as close to the same as possible.
The Packard approach would be more oriented to making sure that the pistons had a lower variation in weight when produced, ala Deming.