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It can be computed fairly easily.A neglected comparative issue is the comparative torque of the two. The larger capacity of the Griffon should give it a greater torque than the Merlin. I have no figures to make the actual comparison.
Great, what altitude are you flying at?twin engine aircraft with engines that made nearly 2100bhp and had a normal TO weight of under 16,000 lbs
The 60 Series Griffons had over 10% more power than the Merlin 130, see earlier posts.The Merlin 130 has essentially the same power as the griffon 65
It is easier, Just don't expect the same results with over 10% less power and with more weight than the engine, radiator, prop from the base line MK IX.It should be far easier to install the Merlin 100 on a Spitfire vs. installing the Griffon.
yes and yes.Wasnt the Griffon fitted because it was available long before the 100 series Merlin?
As for altitude, the XP-51G (a lightweight experimental P-51 Mustang powered by a Merlin 100 series engine) did apparently reach 45-46,000 feet in testing, though the Merlin 130s in the DH Hornet were rated for about 37-38,000 ft service ceiling (though a Hornet in testing achieved almost 42K ft if I remember correctly).
I don't think the Merlin 100 was even much of a thought until the de Havilland Hornet was designed and DH decided they wanted 2000+bhp Merlins to power it. de Havilland probably favored the Merlin over the Griffon for weight considerations (see post above and given the Hornet's role as a light weight twin engine fighter). That being said, I doubt the first Merlin 100s showed up much before the Hornet prototypes were ready (summer of 1944). A Merlin 100 ended up in a XP-51G (slightly modified XP-51F with the Merlin 100 replacing the Packard V-1650-7), but I'm sort of thinking that came after the Hornet prototypes first flew.yes and yes.
They were flying the single stage Griffon in Nov 1941. (DP845)
The 2nd prototype showed up in August of 1942.
No 41 squadron became operational in April of 1943.
The MK XIV with the two stage engines showed up for test (six of them) in the Spring/summer of 1943,
First production aircraft showed up October of 1943.
Spitfires with Merlin 66 engines (or any other kind) don't get 150 octane fuel until April of 1944.
100 series Merlins, of any kind, show up when?
I don't think the Merlin 100 was even much of a thought until the de Havilland Hornet was designed and DH decided they wanted 2000+bhp Merlins to power it. de Havilland probably favored the Merlin over the Griffon for weight considerations (see post above and given the Hornet's role as a light weight twin engine fighter). That being said, I doubt the first Merlin 100s showed up much before the Hornet prototypes were ready (summer of 1944). A Merlin 100 ended up in a XP-51G (slightly modified XP-51F with the Merlin 100 replacing the Packard V-1650-7), but I'm sort of thinking that came after the Hornet prototypes first flew.