FlagshipAZ From United States of America, joined Jan 2001, 3419 posts, RR: 15 Posted (10 years 2 months 4 weeks 9 hours ago) and read 10931 times:
Hi folks...
I remember hearing rumors that the 8 round motors of the HK-1 Hercules being fired up once a year while the bird was still in long-term storage at LGB harbor. Any truth to this rumor, or is it just urban legend? Also, does anyone here know what brand & model piston engines are installed on the Goose? How is this aircraft doing in Oregon nowadays...all reassembled again? All replies appreciated. Regards.
"Beer is living proof that God loves us and wants us to be happy." --Ben Franklin
IMissPiedmont From United States of America, joined May 2001, 6203 posts, RR: 43 Reply 1, posted (10 years 2 months 4 weeks 7 hours ago) and read 10917 times:
The engines are the P&W 4360 as on the B-50, C-124, B-36. C-97/B-377. etc.
It is not true that were started yearly.
The aircraft if fully assermbled and on display in Oregon.
What is it with all the "is there a possibilty airline X will.." threads? The answer it'll is possible.
Erj-145mech From United States of America, joined Oct 2001, 306 posts, RR: 1 Reply 2, posted (10 years 2 months 4 weeks 5 hours ago) and read 10880 times:
Originally, Hughes wanted to use Lycoming XR-7755's, but Lyc couldn't get the bugs worked out in time. The original plan was to use four of the Lycomings, and it took 8 of the Pratts to come up with the right amount of power.
The 7755's were 36 cylinder corncobb behemoths, the rear two rows had water jackets and were water cooled. Not enough cooling air could get back there. When the engines were powered up in the test cells in Montoursville, where the plant is located, the resulting vibrations would knock china from hutch shelves. Lycoming engineers built a special test cell that used a series of criss crossing railroad ties to try to reduce the vibrations. I saw one when I was at the Lycoming factory in the late 70's, and talked with one of the engineers involved.
Buzz From United States of America, joined Nov 1999, 697 posts, RR: 24 Reply 4, posted (10 years 2 months 3 weeks 6 days 21 hours ago) and read 10833 times:
Hi FlagshipAZ, Buzz here. If you come to Portland Oregon, it's about an hour's drive SW to McMinnville airport (MMV) which is across the street from the Evergreen Museum. You can see the "barn" from several miles away when you fly in the area.
Engines and a few other parts are quite out of reach, but the Hughes HK-1 is assembled and they have a nice musueum there.
For more large engine stuff, try a web site www.enginehistory.org and see what the Aircraft Engine Historical Society has posted, it's interesting stuff.
g'day
Broke From United States of America, joined Apr 2002, 1322 posts, RR: 4 Reply 5, posted (10 years 2 months 3 weeks 6 days 19 hours ago) and read 10798 times:
The Air Force Museum at Dayton, Ohio has two displays that include the R-4360. One is the C-124, where one of the airplane's engines is uncowled. The cylinder heads are covered by sheet metal used to direct cooling air more efficiently over the cylinders. The last row of cylinders had a reputation of overheating more than any other row. This will give you a good idea of a typical engine installation.
The other exhibit is of a R-4360 mounted on a portable engine stand with the cylinder heads exposed. You can get a much closer look at the "corncob" and its accessory section which is mounted on the back of the engine.
In the big engine class, the museum also has a Wright R-3350 that has been partially cutaway so you can see the pistons, connecting rods, crankshaft, etc.
Tomh From United States of America, joined May 1999, 960 posts, RR: 3 Reply 7, posted (10 years 2 months 3 weeks 6 days 11 hours ago) and read 10739 times:
According to Herschel Smith in "A History of Aircraft Piston Powerplants", the Lycoming XR7755 achieved 5,000 HP on test with a development goal of 7,000 HP. Smith alludes that there is one at Silver Hill.
IMissPiedmont From United States of America, joined May 2001, 6203 posts, RR: 43 Reply 8, posted (10 years 2 months 3 weeks 6 days 7 hours ago) and read 10702 times:
To add a bit to the post by Broke.
At the Pima Air Museum we have a 4360 cutaway that, when you press a button, turns. Quite impressive if you've never seen a radial in operation. I've watched people stand for an hour watching and trying to figure it out.
Visit us when in Tucson. Just walk on back to hanger 2 and see our small collection of engines. When was the last time you got to turn an RB-211 by hand and hear the wonderful clank?
ID the prop behind the desk and I will be eternally grateful, none of us can tell what aircraft it's from.
What is it with all the "is there a possibilty airline X will.." threads? The answer it'll is possible.
FlagshipAZ From United States of America, joined Jan 2001, 3419 posts, RR: 15 Reply 9, posted (10 years 2 months 3 weeks 5 days 22 hours ago) and read 10678 times:
Thank you one & all, for your fantastic replies. I've heard that the R-4360 was also the main power plant on the original Flying Wing...the XB-35. Don't know if this is true or not. I'm certainly will be visiting the USAF Museum once again, and also the Pima Air Museum...have yet to visit that place. Thanks again, guys. Best regards.
"Beer is living proof that God loves us and wants us to be happy." --Ben Franklin
411A From United States of America, joined Nov 2001, 1826 posts, RR: 9 Reply 10, posted (10 years 2 months 3 weeks 5 days 16 hours ago) and read 10665 times:
For those that may be unaware, the Pratt&Whitney R-4360 (Wasp Major) was developed specifically for the B36 (pusher design) and when the engines were used on other aircraft, the rear row (row four) ran very hot because, the cylinder row offset was the "wrong way 'round" for a tractor design, thus cooling air was difficult to get to those rear cylinders.
For the military, not a problem, unlimited budgets were available.
Civil designs were limited to the Stratocruiser, which burned approximately 600 gals/hr (fuel) and 8 gals/hr (oil).
Somewhat like the DC7, range was often limited by oil quantity.
Timz From United States of America, joined Sep 1999, 6466 posts, RR: 8 Reply 11, posted (10 years 2 months 3 weeks 5 days 10 hours ago) and read 10772 times:
Gunston says the 7755 had 36 cylinders 6 3/8 by 6 3/4-- so that's 7756 cubic inches.
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