@lander4545 typo " use of Packhard " = " use of P266 " . The C model was a testbed ? and did not see service ? . Apart from the hand finished main bearings , the RR engines were not really " hand built " though ???
I see Spits rated at " so many MPH " . The most REALISTIC I have seen is for the Mk IXb which says " 400+ kts IAS " . MPH makes me think of sales brochures. The P-51 is an ICONIC aircraft. I mean no disrespect.
@lander4545 Sir, I owe you an apology , and I stand corrected . The P266 was the Packhard powerplant fitted to the Mk XVI Spit. My error came from sticking my head under the hood of a restored P-51D, which made use of the Packhard .
The use of the Wright supercharger quill , and machined silver / iridium finshed main bearings also constitutes improvement. I had no idea that the RR main bearings were hand finished ! I have a few issues with some raw data , but you are 100% correct.
@tasman763 No, no and no again! The P-51-A had the Allison engine.The Packard V-1650-3 went into the P-51-B and C models. The P-51-D had the Packard V-1650-7 while the last Mustangs produced the P-51- H had the Packard V-1650-9 capable of 487 m.p.h. The hand built Merlins were actually of poorer quality than the mass produced Packards because of the "human error factor" in using hand instruments. "I read the caliper a little high and you read it a little low."
@lander4545 the V1650 you refer to was fitted to the P51-A , and deemed unsuitable for European operations due to lack of performance at altitude. The Packhard P266 as fitted to the P-51D was indeed a great improvement.
Packards lineage in aero engine production was the OX55 ( JN4 Jenny ) power plant, and they simply could not match RR tolerances. The performance figures usually quoted are from the Merlin M63 equipt prototypes. I respect any warbirds fans opinion , yours included :-)
@lander4545 the Packhard was the P266 , not the V1650 . It was not improved or modernised , and actually dyno tested at 1430 bhp , not 1650bhp that the Merlin M63 powerplant that Packhard attempted to copy. On the second visit by RR techs to assist Packhard , they entered the dyno room, turned around and said " who the fuck chromed the rocker covers ??? " Packhard had a LOT to learn !
And I am a Kiwi, not a Brit. And I also think the Mustang is GORGEOUS !
The P-51A and its variations are the only models to use the Allison V-1710-the same engine as the P-38. The P-51B and later all used the Packard built Rolls Royce Merlin V-1650.
@lander4545 typo " use of Packhard " = " use of P266 " . The C model was a testbed ? and did not see service ? . Apart from the hand finished main bearings , the RR engines were not really " hand built " though ???
I see Spits rated at " so many MPH " . The most REALISTIC I have seen is for the Mk IXb which says " 400+ kts IAS " . MPH makes me think of sales brochures. The P-51 is an ICONIC aircraft. I mean no disrespect.
tasman763 1 year ago
@lander4545 Sir, I owe you an apology , and I stand corrected . The P266 was the Packhard powerplant fitted to the Mk XVI Spit. My error came from sticking my head under the hood of a restored P-51D, which made use of the Packhard .
The use of the Wright supercharger quill , and machined silver / iridium finshed main bearings also constitutes improvement. I had no idea that the RR main bearings were hand finished ! I have a few issues with some raw data , but you are 100% correct.
tasman763 1 year ago
@tasman763 No, no and no again! The P-51-A had the Allison engine.The Packard V-1650-3 went into the P-51-B and C models. The P-51-D had the Packard V-1650-7 while the last Mustangs produced the P-51- H had the Packard V-1650-9 capable of 487 m.p.h. The hand built Merlins were actually of poorer quality than the mass produced Packards because of the "human error factor" in using hand instruments. "I read the caliper a little high and you read it a little low."
lander4545 1 year ago
@lander4545 the V1650 you refer to was fitted to the P51-A , and deemed unsuitable for European operations due to lack of performance at altitude. The Packhard P266 as fitted to the P-51D was indeed a great improvement.
Packards lineage in aero engine production was the OX55 ( JN4 Jenny ) power plant, and they simply could not match RR tolerances. The performance figures usually quoted are from the Merlin M63 equipt prototypes. I respect any warbirds fans opinion , yours included :-)
tasman763 1 year ago
@tasman763 I respect your opinon but you are totally incorrect on the facts and need to do some research!
lander4545 1 year ago
@lander4545 the Packhard was the P266 , not the V1650 . It was not improved or modernised , and actually dyno tested at 1430 bhp , not 1650bhp that the Merlin M63 powerplant that Packhard attempted to copy. On the second visit by RR techs to assist Packhard , they entered the dyno room, turned around and said " who the fuck chromed the rocker covers ??? " Packhard had a LOT to learn !
And I am a Kiwi, not a Brit. And I also think the Mustang is GORGEOUS !
tasman763 1 year ago
did said exactly what i said.same engins as p51D
Hellfire0220 2 years ago
It's true, maybe its you who needs to google it.
soupy572 2 years ago
@soupy572 google it o.o
Hellfire0220 2 years ago
The P-51A and its variations are the only models to use the Allison V-1710-the same engine as the P-38. The P-51B and later all used the Packard built Rolls Royce Merlin V-1650.
soupy572 2 years ago