HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Apr 22, 2009, 10:14 AM
Suck it and see
Norfolk Flyer's Avatar
Cromer, North Norfolk Coast, UK
Joined Aug 2008
525 Posts
Sooner than I expected!

Weather good, glue dry - so no excuses!

Here's the video, suppose I'll have to paint it now

John

My Foamy (2 min 28 sec)
Norfolk Flyer is offline Find More Posts by Norfolk Flyer
Reply With Quote
Sign up now
to remove ads between posts
Old Apr 22, 2009, 11:21 AM
Flying...Pushing Air Down
sr71fan's Avatar
Clovis, NM, USA
Joined Nov 2000
3,523 Posts
Beautiful work, John!

I like the detachable rotor feature.

Thanks for the photos!

Can't wait for the videos. (We were playing musical posts...GREAT video, and great flyer... bet you're very pleased!)

Gary
sr71fan is offline Find More Posts by sr71fan
Last edited by sr71fan; Apr 22, 2009 at 11:30 AM.
Reply With Quote
Old Apr 22, 2009, 11:41 AM
Flying...Pushing Air Down
sr71fan's Avatar
Clovis, NM, USA
Joined Nov 2000
3,523 Posts
John.

I forgot...

Nice landing!



Gary
sr71fan is offline Find More Posts by sr71fan
Reply With Quote
Old Apr 22, 2009, 11:52 AM
Suck it and see
Norfolk Flyer's Avatar
Cromer, North Norfolk Coast, UK
Joined Aug 2008
525 Posts
Thanks for the comments Gary.
If you ever build a model with long rotor blades, I can recommend the 3 - finned tail.

John
Norfolk Flyer is offline Find More Posts by Norfolk Flyer
Reply With Quote
Old Apr 22, 2009, 02:25 PM
Flying...Pushing Air Down
sr71fan's Avatar
Clovis, NM, USA
Joined Nov 2000
3,523 Posts
You bet I will, John!

Thanks!

Gary
sr71fan is offline Find More Posts by sr71fan
Reply With Quote
Old Apr 22, 2009, 08:00 PM
RC Group therapist
Boneswamped's Avatar
DeRidder LA.
Joined Nov 2008
1,961 Posts
Great work!! Your foamy looked great in the air, and appeared to have a decent flight envelope. Thanks for the video. (Nice hatcam)
Regards,
-Mike
Boneswamped is offline Find More Posts by Boneswamped
RCG Plus Member
Old Apr 23, 2009, 05:34 PM
It was a GLITCH! Honestly!
SafeLandings's Avatar
Stourport on Severn ,Worcestershire, United Kingdom
Joined Dec 2007
4,706 Posts
Quote:
Originally Posted by Norfolk Flyer
Sooner than I expected!

Weather good, glue dry - so no excuses!

Here's the video, suppose I'll have to paint it now

John

http://www.youtube.com/watch?v=NlVpls9pQck


Ha...missed this post!!!

Looks to be a very stable flier John.. cant wait to see it 'in the flesh'

Regards Rich
SafeLandings is offline Find More Posts by SafeLandings
Reply With Quote
Old Apr 24, 2009, 03:36 PM
Flying...Pushing Air Down
sr71fan's Avatar
Clovis, NM, USA
Joined Nov 2000
3,523 Posts
Two-Blade Success!

I was pleasantly surprised when my very first two-blade rotor lifted off so smoothly yesterday. I thought it was going to be difficult, but proved not to be.

WooHoo!

Gary

Autogyro Single-Rotor Two-blade First Flight (3 min 31 sec)
sr71fan is offline Find More Posts by sr71fan
Reply With Quote
Old Apr 24, 2009, 04:25 PM
Registered User
JochenK's Avatar
Joined Jan 2005
1,286 Posts
Gary,

congratulations! Sometimes I have the sneaking feeling that those lightweight rotors use their own kind of physics.

Jochen
JochenK is offline Find More Posts by JochenK
Reply With Quote
Old Apr 24, 2009, 05:08 PM
Suck it and see
Norfolk Flyer's Avatar
Cromer, North Norfolk Coast, UK
Joined Aug 2008
525 Posts
Masterful control Gary, you made it look so easy.

I would have dismissed the idea of a 2 blade depron head on a foam model as being a non starter, but you have proved me wrong.

I was also wondering how far it's possible to take the flat depron blade (size wise).

Pusher version on the building board?

Jochen,

As well as the lightness of the blades, I cannot help but think the blade length / chord ratio has something to do with it. Just a feeling as my knowledge of rotor blade aerodynamics is almost non existent.

John
Norfolk Flyer is offline Find More Posts by Norfolk Flyer
Reply With Quote
Old Apr 24, 2009, 05:29 PM
It was a GLITCH! Honestly!
SafeLandings's Avatar
Stourport on Severn ,Worcestershire, United Kingdom
Joined Dec 2007
4,706 Posts
Great flying Gary..do the blades have an aerofoil? or is that profile fuselage helping with the lift.....fascinating to watch!!...well done
SafeLandings is offline Find More Posts by SafeLandings
Reply With Quote
Old Apr 25, 2009, 02:30 AM
Registered User
JochenK's Avatar
Joined Jan 2005
1,286 Posts
John,

there's got to be more to it than that. When I switched the three-bladed Nanomum rotor for an unleaded two-bladed one, I got the same pleasant surprise as Gary: I could easily fly the two-blader with the same set-up as before. And that rotor's blades had a relativly normal aspect ratio of 9. On my other three to two-blade conversions with AB blades I had to increase the rotor back tilt and heavily reduce servo throws to get them to fly.

Jochen
JochenK is offline Find More Posts by JochenK
Reply With Quote
Old Apr 25, 2009, 02:52 AM
Suck it and see
Norfolk Flyer's Avatar
Cromer, North Norfolk Coast, UK
Joined Aug 2008
525 Posts
Jochen,
I think that I will just carry on using what works without trying to fathom out why!
I know Gary uses 12 inch by 2 inch by 3mm depron blades on his 3 blade version, with a 2mm CF rod on the LE. I assume he uses the same on the 2 blader (confirm please Gary).
When I built my version of his 3 blader, the blades seemed so fragile on the TE I was tempted to tape CF rod to the TE as well, but it flies fine "as is".

I will try a 2 blade head on mine next, but I'm not nearly as accomplished a pilot and I'm sure Gary's expertise is a big factor.

John
Norfolk Flyer is offline Find More Posts by Norfolk Flyer
Reply With Quote
Old Apr 25, 2009, 05:46 AM
Registered User
JochenK's Avatar
Joined Jan 2005
1,286 Posts
Quote:
Originally Posted by Norfolk Flyer
I think that I will just carry on using what works without trying to fathom out why!
John,

you're right, but the behaviour of those lightweight blades really is a bit unusual.

Jochen
JochenK is offline Find More Posts by JochenK
Reply With Quote
Old Apr 25, 2009, 07:12 AM
Flying...Pushing Air Down
sr71fan's Avatar
Clovis, NM, USA
Joined Nov 2000
3,523 Posts
John.

I made an extra 3-blade rotor with blade chord of 1.75 inches. It seems to spin faster, and flies better than the wider blades. I also went with 1.75 on the two-blade rotor (because I already had some strips cut to that width). I'm still amazed at the flight characteristics.

Gary
sr71fan is offline Find More Posts by sr71fan
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Looking for TurboCAD 2D 6.5 Zoom The Builders Workshop 22 Dec 01, 2006 12:04 PM
Yippee! My wife got me a digital postal scale today. My moth is 6.5 oz w/ no battery! The Other Dave Parkflyers 1 Feb 08, 2002 10:37 PM
Aeronaut 6.5x4 or 6.5 prop for Zagi 450T ? freq Foamies (Kits) 3 Oct 25, 2001 06:36 PM
Will a 6.5-4 prop work with a direct drive Permax 480? Ryan Nau Power Systems 2 Apr 29, 2001 11:43 AM