P-2 (P2V), RB-69, CP-122, and Neptune MR.1

[PR19_Kit]

     Is there some reason the Python HAS to use that c/r prop assembly? Even if so, necessarily that spinner?

Yeah, 'cos it looks so MEAN!  

Dead right about the Python being a BIG engine Robert, I saw one at the Solent Sky museum yesterday and it's huge! A pity there isn't a single Python powered aircraft left in the world, we'd be able to see it in proportion then.

[kitnut617]

Here's a very good pic of why the spinners are like they are along with a good idea what the Python looked like under the skin.

The intakes are right in front of the front spar banjo, the air enters there then turns 180 degrees and goes through the center where the compressor is, after that turns another 180 degrees and goes through the burners which then exists through the exhaust

[McColm]

A few more pics:

[McColm]

The front end, ladder showing

[McColm]

Hi ,
I've come across the Lockheed L-238 Super Neptune,proposed in 1953 and based on the Neptune P2V-7.Two T54 turboprops were to drive contra-rotating propellers with two wing tipped J71 jets. A detachable tail cone containing twin remote-controlled cannons.
From the concept model the forward observation seat is a solid nose.
Info from Jim Keeshen book ISBN 978-0-8597916-1-8 priced $34.95/£22.95 2013.

[McColm]

Just a quick question.
Instead of using the auxiliary jets did Lockheed ever fit the Neptune with another piston or compound turbo engines?
As I'm Whiffing a stretched Neptune and a second set of P & W turboprops from the Heller/Revell CL-415 turbo would complement the Dakota turboprop conversion set already glued in place.

[sandiego89]

Just a quick question.
Instead of using the auxiliary jets did Lockheed ever fit the Neptune with another piston or compound turbo engines?
As I'm Whiffing a stretched Neptune and a second set of P & W turboprops from the Heller/Revell CL-415 turbo would complement the Dakota turboprop conversion set already glued in place.

I don't think Lockheed ever did, but I assume you are familiar with the Kawasaki P-2J with turboprop T-64's? (still with the auxiliary jets as well). 

A whole series of 3350's were fitted to the Lockheed built Neptune's, most with increasingly powerful versions.

At least one air tanker operator mulled putting turboprops on their Neptune for making the ultimate fire-bomber, but I do not recall any being so converted. 

[PR19_Kit]

IIRC all the US built Neptunes had the R-3350 engine of various marks, but Kawasaki re-engined the ones they built with the T-64 turbo-prop as well as retaining two jets in the pods.

https://en.wikipedia.org/wiki/Kawasaki_P-2J

Hm, how come I posted this one minute before Dave posted his reply, and yet his arrived first? Does the Forum exist in different time/space contuums depending on which country we're in? 

[McColm]

Before the age of the internet  was world wide. I used to work at Northwood Command Centre.
On a Saturday evening the football results for  all the premiership and league games were sent to all of the Royal Navy ships at sea plus the results were put out on the broadcast to the submarines. The overseas territories were also included.
It seemed at the time you could get a reply from the Falkland Islands quicker than that from Gibraltar.
Of course HMS Invincible or Invisible as we liked to call her never replied.

[kitnut617]

IIRC all the US built Neptunes had the R-3350 engine of various marks, but Kawasaki re-engined the ones they built with the T-64 turbo-prop as well as retaining two jets in the pods.

https://en.wikipedia.org/wiki/Kawasaki_P-2J

and you can get a 1/72 kit for it (well at least a conversion)

https://n-wing.sakura.ne.jp/secure/ProductDetail.php?iProduct=5

[sandiego89]

IIRC all the US built Neptunes had the R-3350 engine of various marks, but Kawasaki re-engined the ones they built with the T-64 turbo-prop as well as retaining two jets in the pods.

https://en.wikipedia.org/wiki/Kawasaki_P-2J

Hm, how come I posted this one minute before Dave posted his reply, and yet his arrived first? Does the Forum exist in different time/space contuums depending on which country we're in? 

Clearly us USA whiffers are ahead of the times!    And we came up with about the same reply- great minds!

-Dave

[Captain Canada]

Lovely conversion set ! The site is pretty hard to navigate. Is there an easier place to get it ?