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Old Aug 03, 2010, 05:23 PM
sidneyw is offline
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All thanks to the blade tip design .... and the 20 degree downward making stalling trailing blade less profound achieving the highest airspeed for any heli if I am not mistaken.
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Old Aug 03, 2010, 05:42 PM
davylah is offline
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Yes, the good old BERP tips.

By the way, before anyone mentions the Sikorsky X2, it's not a helicopter, it's a gyroplane. It's also nothing new, look at the British 'Fairy Rotodyne' from the 1950s.
Old Aug 04, 2010, 11:37 AM
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Originally Posted by davylah View Post
Yes, according to Wikipedia, the KA-50 can only do 242mph (in a dive) whereas the record breaking Lynx G-LYNX achieved 249.1mph. Obviously the standard military Lynx is not quite as fast. The engines in G-LYNX were tweaked and ran water methanol injection, also all the panel gaps were taped up and windscreen wipers/steps/aerials etc were removed.
That is quite an achievement... Are you going to do a quad blade on yours?

G.
Old Aug 04, 2010, 11:38 AM
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Originally Posted by davylah View Post
Yes, the good old BERP tips.

By the way, before anyone mentions the Sikorsky X2, it's not a helicopter, it's a gyroplane. It's also nothing new, look at the British 'Fairy Rotodyne' from the 1950s.
The Rotodyne was an evolution for the autogiro from Juan de la Cierva IIRC...

Yeah, I don't consider those true helicopters tho...

G.
Old Aug 05, 2010, 03:36 AM
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Yeah I'm planning a 4 blade head eventually. I'd like to try and modify some Apache blades to look like the BERP ones too. Maybe my wife will get me a 4 blade head for Christmas!
Old Aug 05, 2010, 11:16 AM
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Originally Posted by davylah View Post
Yeah I'm planning a 4 blade head eventually. I'd like to try and modify some Apache blades to look like the BERP ones too. Maybe my wife will get me a 4 blade head for Christmas!
Thats sweet dude, quad bladed lynx will be really nifty!

G.
Old Aug 07, 2010, 08:11 PM
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Old Aug 08, 2010, 11:27 AM
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Originally Posted by davylah View Post
By the way, before anyone mentions the Sikorsky X2, it's not a helicopter, it's a gyroplane.
Nope, it's a compound helicopter.

The Rotodyne used tip jets powering the rotor for takeoff & landing only, the X2 rotor is powered all the time and mechanically linked to the pusher prop.

Still not a true helicopter of course & isn't in the same class as far as speed records go, and it's not the fastest compound one either - it's probably the fastest prop augmented one though (it's faster than the AH-56 anyways). The Bell 533 & Lockheed XH-51 were both faster decades ago but used jet augmentation
Old Aug 08, 2010, 01:30 PM
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Ok, but the fact remains that the Lynx is an awesome helicopter. Thanks for the info on the Sikorsky by the way
Old Aug 08, 2010, 01:34 PM
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Originally Posted by cap231ex View Post
Here's a couple of pics of my Military Fleet OH-6 (250), AH-1W (450), & TH-57C (400) enjoy.
Hey, I've been thinkin'.... Maybe put some cut down 500 blades on that Cobra? I think it would work well scale wise, and I get the feeling you'll really like the way it flys. Gotta keep the headspeed below 1800-1900 due to the weight though.
Old Aug 08, 2010, 08:17 PM
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Took a few photos of a partially stripped Huey at The Dells, Wisconsin yesterday. The last time I was there was 23 years ago .....
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Old Aug 08, 2010, 08:39 PM
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There must be hundreds of these Huey's in parks all over the USA. There's one in each three of the five coastal communities here in south Mississippi. My little hamlet has one in out Vietnam Memorial park. They were the mack trucks of the air in 'Nam and they still give and give.

Cheers - Boyd
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Old Aug 08, 2010, 08:42 PM
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Awesome pics Sidneyw - I'd love to do a large Huey sometime...

For now, here's a pic of my 1st sport scale project.
Old Aug 08, 2010, 08:49 PM
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There must be hundreds of these Huey's in parks all over the USA.

Cheers - Boyd
I am sure; but this is the first time I stopped the car and took photos.

In particular, I paid attention to the main blade width .... not as wide chore as others. I figure there must be different sizes based on task applications.
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