I have the Northwing conversion kit to convert the Hasegawa Neptune into the Japanese turbo prop version. It has new engines,  new wing inserts forward fuselage, and auxiliary engines, amongst other stuff I can't remember.

Quote from: chrisonord on February 10, 2024, 10:44:09 AMI have the Northwing conversion kit to convert the Hasegawa Neptune into the Japanese turbo prop version. It has nee engines,  new wing inserts forward fuselage, and auxiliary engines, amongst other stuff I can't remember.

That would be a cool build!

Quote from: chrisonord on February 10, 2024, 10:44:09 AMI have the Northwing conversion kit to convert the Hasegawa Neptune into the Japanese turbo prop version. It has nee engines,  new wing inserts forward fuselage, and auxiliary engines, amongst other stuff I can't remember.

Off-topic, but I've got a Neptune and I've always tentatively planned to turboprop it too, but with the noses off a pair of FROG Wyverns as an RAF version.

Quote from: Weaver on February 10, 2024, 11:22:14 PMOff-topic, but I've got a Neptune and I've always tentatively planned to turboprop it too, but with the noses off a pair of FROG Wyverns as an RAF version.

Love that idea H, LOTS more grunt than those puny radials.   

Quote from: PR19_Kit on February 11, 2024, 08:28:54 AM

Quote from: Weaver on February 10, 2024, 11:22:14 PMOff-topic, but I've got a Neptune and I've always tentatively planned to turboprop it too, but with the noses off a pair of FROG Wyverns as an RAF version.

Love that idea H, LOTS more grunt than those puny radials.   

Indeed it would! Replacing two Wright R-3350 Duplex-Cyclone 18-cylinder air-cooled radial piston engine, 3,600 hp  each   with two  Armstrong Siddeley Python turboprop engines, 3,600 hp +1,100 lb residual thrust each would have an advantageous effect.

Quote from: Rheged on February 11, 2024, 09:52:12 AM

Quote from: PR19_Kit on February 11, 2024, 08:28:54 AM

Quote from: Weaver on February 10, 2024, 11:22:14 PMOff-topic, but I've got a Neptune and I've always tentatively planned to turboprop it too, but with the noses off a pair of FROG Wyverns as an RAF version.

Love that idea H, LOTS more grunt than those puny radials.   

Indeed it would! Replacing two Wright R-3350 Duplex-Cyclone 18-cylinder air-cooled radial piston engine, 3,600 hp  each   with two  Armstrong Siddeley Python turboprop engines, 3,600 hp +1,100 lb residual thrust each would have an advantageous effect.

According to Wikipedia, the Python was rated at 4,110 hp + 1180 lb thrust. It was 780 lb heavier, but it's power to weight ratio was still better.

Quote from: Weaver on February 11, 2024, 07:06:41 PMAccording to Wikipedia, the Python was rated at 4,110 hp + 1180 lb thrust. It was 780 lb heavier, but it's power to weight ratio was still better.

And it looks SO much cooler!   

Quote from: Weaver on February 10, 2024, 11:22:14 PM

Quote from: chrisonord on February 10, 2024, 10:44:09 AMI have the Northwing conversion kit to convert the Hasegawa Neptune into the Japanese turbo prop version. It has nee engines,  new wing inserts forward fuselage, and auxiliary engines, amongst other stuff I can't remember.

Off-topic, but I've got a Neptune and I've always tentatively planned to turboprop it too, but with the noses off a pair of FROG Wyverns as an RAF version.

Stop diverting my focus NOW!!

Quote from: Pellson on February 12, 2024, 04:13:13 AM

Quote from: Weaver on February 10, 2024, 11:22:14 PM

Quote from: chrisonord on February 10, 2024, 10:44:09 AMI have the Northwing conversion kit to convert the Hasegawa Neptune into the Japanese turbo prop version. It has nee engines,  new wing inserts forward fuselage, and auxiliary engines, amongst other stuff I can't remember.

Off-topic, but I've got a Neptune and I've always tentatively planned to turboprop it too, but with the noses off a pair of FROG Wyverns as an RAF version.

Stop diverting my focus NOW!!

But isn't that what we are all masters at doing?? 
The day we can stick to a single topic that s the day the world's ended 

Just to stir things up and off track, but only slightly more 
Japanese book on a Japanified P-2 . In erm, Japanese.

Quote from: Wardukw on February 12, 2024, 10:26:09 AM

Quote from: Pellson on February 12, 2024, 04:13:13 AM

Quote from: Weaver on February 10, 2024, 11:22:14 PM

Quote from: chrisonord on February 10, 2024, 10:44:09 AMI have the Northwing conversion kit to convert the Hasegawa Neptune into the Japanese turbo prop version. It has nee engines,  new wing inserts forward fuselage, and auxiliary engines, amongst other stuff I can't remember.

Off-topic, but I've got a Neptune and I've always tentatively planned to turboprop it too, but with the noses off a pair of FROG Wyverns as an RAF version.

Stop diverting my focus NOW!!

But isn't that what we are all masters at doing?? 
The day we can stick to a single topic that s the day the world's ended 

Or it's the day we can finally focus enough to Take Over the World!

Take over the world,  nope, not a chance      have you thought how much paperwork that would involve,  it would wipe out any chance of bench time. 

Wright R-3350-32W (Lockheed P2V-7)
Rating SL (hp/rpm): 3700/2900 (t/o); 2800/2600
Weight: 3,560 lbs
Length: 91.8 inches
Diameter: 56.59 inches

A-S Python 3 (Westland Wyvern S.4)
Rating SL (eshp*/rpm): 4110/8000
Weight: 3,450 lbs
Length: 123.2 inches
Diameter: 54 inches

The biggest issue is the difference in length, the Python 3 being thirty inches longer.

*In simple terms an eshp (equivalent shaft horsepower) rating is determined by adding together measured shaft hp and the residual thrust divided by 2.5. Where 1 lhp = 2.5 lbs of thrust.
Which we can state simply as ESHP = SHP + (RT/2.5).

The 4,110 eshp rating is the total power rating for the engine, it is not 4,110 hp + 1,180 lbs of thrust, it's 3,638 shp + 472 hp from residual thrust.

4,110 eshp = SHP + (1180 lbs. thrust/2.5); 1180/2.5 = 472; 4,110 - 472 = 3,638 SHP.

Quote from: Steel Penguin on February 12, 2024, 01:15:23 PMTake over the world,  nope, not a chance      have you thought how much paperwork that would involve,  it would wipe out any chance of bench time. 

This is true, I had not thought that through - you make good sense.
I've never been keen on the spotlight (or paperwork) anyway; but we could always get minions to 'run' things while we stay in the background, at the bench...?

Quote from: Rick Lowe on February 12, 2024, 11:30:04 PM

Quote from: Steel Penguin on February 12, 2024, 01:15:23 PMTake over the world,  nope, not a chance      have you thought how much paperwork that would involve,  it would wipe out any chance of bench time. 

This is true, I had not thought that through - you make good sense.
I've never been keen on the spotlight (or paperwork) anyway; but we could always get minions to 'run' things while we stay in the background, at the bench...?

Some decades ago, I earned my Boy Scout  "World   Domination "  badge....................which was all very well, but then I took up whiffery because it was more fun!