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Old Jul 22, 2011, 03:44 PM
Somewhere lost in Texas
Joined Jan 2011
300 Posts
Question, why would it have a greater drag? Normally the 3 blade is smaller then the 2 blade, with less pitch. Couldn't you also use a 3-blade folder which would present very little drag while not in use? Just wondering...
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Old Jul 22, 2011, 04:53 PM
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CaliDave's Avatar
Bay Area
Joined Dec 2010
2,390 Posts
Quote:
Originally Posted by Patchitagain View Post
Question, why would it have a greater drag? Normally the 3 blade is smaller then the 2 blade, with less pitch. Couldn't you also use a 3-blade folder which would present very little drag while not in use? Just wondering...
I think they mean when comparing the same blade a 3 blade size will have greater drag cause of the extra blade. Of course it would also have more thrust.

Not sure if there is a 3 blade folding prop, but that would solve the glide drag. In general they are used for more thrust needed and to gain a similar thrust of a 2 blade but in a smaller space.

Maybe if you could vary the pitch of the blades they would be more useful, but it seems the verdict is to use them:

1. For scale looks

2. If for some reason you need that thrust and don't care about other issues like drag.

They sure do look cool... I wish they were more efficient.
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Old Jul 22, 2011, 06:14 PM
Whats the wrst that can happn?
AdamChicago's Avatar
Chicago, IL USA
Joined May 2010
2,667 Posts
Ok I was easily able to push the shaft through on the Scorpion HK 3026-1210 (heli motor). There was even a notch on the other end of the shaft for the collar...and that's why I love Scorpion! And the HK version only cost $65 at Al's Hobbies vs $124 for the standard S version motor! I am so pysched!!!

This motor will mean near 3D action on the SW
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Last edited by AdamChicago; Jul 22, 2011 at 06:29 PM.
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Old Jul 22, 2011, 07:09 PM
Somewhere lost in Texas
Joined Jan 2011
300 Posts
They do...

Here's the link and it appears to be of good quality:

http://www.espritmodel.com/index.asp...D&ProdID=14296
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Old Jul 22, 2011, 07:11 PM
Somewhere lost in Texas
Joined Jan 2011
300 Posts
OOPS, that's for the stopper.. Here's the link to the spinner/blades:

http://www.espritmodel.com/index.asp...dID=14293&HS=1
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Old Jul 22, 2011, 07:50 PM
RTFM
octane81's Avatar
Antarctica
Joined Oct 2010
1,178 Posts
Ready for maiden FPV flight

1.3ghz video tx/rx
ChainLink UHF
FY21AP stabilizer & autopilot
Cyclops 1.5 OSD
5000mAh motor + 2200mAh video/servo
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Old Jul 22, 2011, 08:02 PM
RCGroups Editor
Matt Gunn's Avatar
United States, OH, Parma
Joined Jul 2009
5,056 Posts
Looks good!
Whats the push-button on the side for?
matt
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Latest blog entry: Bill Hempel Xtreme Decathlon
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Old Jul 22, 2011, 08:17 PM
T#0
PilotKeeg's Avatar
Steamboat Springs, CO
Joined Aug 2010
623 Posts
probably for calibrating his fy-21
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Old Jul 22, 2011, 08:41 PM
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rcplanes1234's Avatar
United States, IA, West Des Moines
Joined Jan 2010
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Quote:
Originally Posted by PilotKeeg View Post
probably for calibrating his fy-21
NO its the reset button for the osd.
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Old Jul 22, 2011, 09:57 PM
Haww Hawww Haawww
Falafel's Avatar
United States, VA
Joined Apr 2011
19 Posts
Maidened, or rather attempted to maiden today. The heat wasn't so bad, but I unwisely tried to fly in too small a field. Learning/tuning the plane in such a small environment didn't work but I did learn a fiberglassed Skywalker can really take a hit and have new respect for how much EPO can flex. Now to find a better spot.
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Old Jul 22, 2011, 10:27 PM
Fly Chitty Chitty Bang Bang!
EarthOrbiter's Avatar
Central California USA
Joined Feb 2011
379 Posts
Every one is almost there.
When the Two sides of a prop are horizontal and throwing a horizontal mass wanting to be this way while you are turning a vibration will occur to the frame. If Two blades are up and down and one rotates the plane it will do the same.
A 3 bladed Prop does not exhibit this affect as much.
Disagree more.

Quote:
Originally Posted by erkq View Post
It's the rotating angular mass, not that mass' shape that determines the gyroscopic precession.
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Old Jul 22, 2011, 11:01 PM
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rcplanes1234's Avatar
United States, IA, West Des Moines
Joined Jan 2010
664 Posts
Hey quick questions. Is a 4amp bec enough for powering 4 servos for my skywalker. the bec is built into the esc.
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Old Jul 22, 2011, 11:22 PM
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Daemon's Avatar
Lakewood, Colorado
Joined Aug 2002
28,643 Posts
Yes, 4 amp BEC should be fine if it's a switching type.

ian
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Old Jul 23, 2011, 03:28 AM
Seafax ROV
WalneyCol's Avatar
United Kingdom, Barrow-in-Furness
Joined Feb 2011
371 Posts
bump
Quote:
Originally Posted by WalneyCol View Post
The canopy that came with my v2 skywalker had one of the corners missing but I'd really like to have one on for aesthetic reasons. If anyone has an undamaged one they're not planning on using and would be willing to post to an address in Cumbria please PM me and let me know how much you'd take for it.

Cheers.

Colin.
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Old Jul 23, 2011, 04:26 AM
UAV Pilot
UndCon's Avatar
sweden
Joined May 2007
1,005 Posts
Make one yourself.

An old PET Coke bottle, an owen and a mold to wrap the plastic onto.

Plenty of guides available
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