Pratt and Whitney Canada Boeing 720

Captain Canada · May 22, 2014, 08:35:36 PM

Former engine test bed flying out of St. Hubert PQ now residing at the RCAF Memorial Museum

Captain Canada · May 22, 2014, 08:36:45 PM

Captain Canada · May 22, 2014, 08:37:57 PM

Captain Canada · May 22, 2014, 08:39:46 PM

Captain Canada · May 22, 2014, 08:41:03 PM

Cobra · May 22, 2014, 08:44:56 PM

That Plane looks Cool & Stylish in that Paint Scheme

However, i Bet it Would be an RPIA to Reproduce that Scheme in a scale Model of That Jet! Thanks for Posting

Dan

Weaver · May 23, 2014, 03:21:14 AM

The radomes are interesting on an engine testbed: any idea what it was testing with them?

PR19_Kit · May 23, 2014, 04:36:22 AM

Quote from: Weaver on May 23, 2014, 03:21:14 AM
The radomes are interesting on an engine testbed: any idea what it was testing with them?

IIRC the radome in the pod above the cockpit was the original weather radome that was in the nose cone when it was a 'normal' 720. Then it had a test PT-6 mounted in the nose position so the radar had to be moved.

Later it had test engines mounted on a stub wing on the starboard side of the nose, you can see the stub in the Captain's pics still, but I'm not sure if it ever flew with test engines in BOTH positions at the same time.

PR19_Kit · May 23, 2014, 04:45:01 AM

I just dug further into this and it looks as if the nose position was used to test turbo-props and the stub wing position to test turbo-fans. Obvious really had I thought about it.

If you Google 'C-FETB' under 'Images' there are ZILLIONS of pics of the aircraft in various modes, and it occurs to me that it's very modellable now that Roden have come out with their 720 kit. Converting a 707 into a 720 is a bitch of a job, I did it once!

And I love the pun of the aircraft's reggie too. C-FETB, think about it.....

sandiego89 · May 23, 2014, 05:05:34 AM

Dang, that is ugly....perfect for this forum. Thanks for posting.

kitnut617 · May 23, 2014, 05:43:04 AM

Quote from: PR19_Kit on May 23, 2014, 04:45:01 AM
I just dug further into this and it looks as if the nose position was used to test turbo-props and the stub wing position to test turbo-fans. Obvious really had I thought about it.

If you Google 'C-FETB' under 'Images' there are ZILLIONS of pics of the aircraft in various modes, and it occurs to me that it's very modellable now that Roden have come out with their 720 kit. Converting a 707 into a 720 is a bitch of a job, I did it once!

And I love the pun of the aircraft's reggie too. C-FETB, think about it.....

I thought the Airfix E-3 was really a 720 Kit

Old Wombat · May 23, 2014, 06:55:50 AM

My versions of C-FETB;

clean: Canadian Fit Everything Test Bed

unclean: Canadian F___ing Everything Test Bed

Although I'm sure others can come up with better.

PS: Not quite as over-blown as C-FETB but I worked on this.

A hint at what's on the nose.

Captain Canada · May 23, 2014, 07:30:50 AM

I hadn't realized that Kit, and I said it right in my first post.....Former Engine Test Bed !

PR19_Kit · May 23, 2014, 12:43:06 PM

Quote from: kitnut617 on May 23, 2014, 05:43:04 AM
Quote from: PR19_Kit on May 23, 2014, 04:45:01 AM
I just dug further into this and it looks as if the nose position was used to test turbo-props and the stub wing position to test turbo-fans. Obvious really had I thought about it.

If you Google 'C-FETB' under 'Images' there are ZILLIONS of pics of the aircraft in various modes, and it occurs to me that it's very modellable now that Roden have come out with their 720 kit. Converting a 707 into a 720 is a bitch of a job, I did it once!

And I love the pun of the aircraft's reggie too. C-FETB, think about it.....

I thought the Airfix E-3 was really a 720 Kit

I don't think so, it may be a 707-420 with added CFM-56s though. A 720 is quite a bit shorter than most 707s and it has an extended leading edge inboard of the #2 and #3 engines, together with different flaps IIRC.

I expect JCF will give be able to give us chapter and verse on it too.

I figured that C-FETB stood for 'Canadian Flying Engine Test Bed' as opposed to a gound based one.

kitnut617 · May 23, 2014, 03:25:56 PM

Quote from: PR19_Kit on May 23, 2014, 12:43:06 PM
Quote from: kitnut617 on May 23, 2014, 05:43:04 AM
I thought the Airfix E-3 was really a 720 Kit

I don't think so, it may be a 707-420 with added CFM-56s though. A 720 is quite a bit shorter than most 707s and it has an extended leading edge inboard of the #2 and #3 engines, together with different flaps IIRC.

I expect JCF will give be able to give us chapter and verse on it too.

I figured that C-FETB stood for 'Canadian Flying Engine Test Bed' as opposed to a gound based one.

Found this diagram of the various 707 wings, I was thinking of the 707-320B which the Airfix E-3 is based on.

But your 720 wing shouldn't have created too much of a problem, just a lerx in between the fuselage and inner engine by the looks of it ---