HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Jan 19, 2012, 08:04 PM
Registered User
United States, FL, Melbourne
Joined Apr 2009
431 Posts
Discussion
big sig kavalier

well im going to attempt a big sig kavailer. its going to be light. not as light as the attached lancer (2.5lbs auw 82 inch wing span) but hopefully not much more than twice that at 5 lbs. i want to use a 40 size electric. i need a sport plane for the club field and big bird fly ins. anyone try a similar light plane of this size? ill have to triple the control surface sizes to get a good flight response. not sure how to make the ailerons without a cheese slice cut out. pretty big one i imagine. balsa and light covering as materials. thanks for any advice you might have!
paulatgis is offline Find More Posts by paulatgis
Reply With Quote
Sign up now
to remove ads between posts
Old Jan 20, 2012, 07:11 PM
Shade Tree Aviation #2
M.Putnam's Avatar
United States, NC, Rutherfordton
Joined Jan 2002
1,092 Posts
Always had a soft spot for the Sig Kavalier. it was one of the first RC models I attempted to build back in the day... Good luck with your upscale! How big are you planning on going?

Matt
M.Putnam is offline Find More Posts by M.Putnam
Reply With Quote
Old Jan 21, 2012, 05:29 PM
Registered User
Mike Hall's Avatar
Albany, GA
Joined Jun 2002
2,356 Posts
I have a sig Kavalier drawn up for a friend of mine. I need to finish it on up for him at some point.

Mike
Mike Hall is offline Find More Posts by Mike Hall
Reply With Quote
Old Jan 21, 2012, 08:54 PM
Registered User
AmpAce's Avatar
North by Northwest
Joined Nov 2003
2,422 Posts
Paulatgis,
Best wishes for your project. I'm not sure that you will need to up size the control surfaces all that much. Lighter weight means less inertia to overcome, and slower flying speed will result in less aerodynamic force to overcome. I've built several smaller, lightweight models, and they flew well with normal sized control surfaces.

Of course if you want to do more aggressive flying than the original Kavalier was designed for, then it's a different ball game.

AmpAce
AmpAce is offline Find More Posts by AmpAce
Reply With Quote
Old Apr 01, 2012, 06:41 PM
Registered User
United States, FL, Melbourne
Joined Apr 2009
431 Posts
wing

wing came to 80.5 inches. I joined the wing like the guillows lancer instead of gluing two two wing halves together. basically each wing has half a spar extending into the other wing, then clamped and glued together. weight is about under one pound so far. still need leading edge. maybe lead with a balsa strip 3/8 x 1 inch then with foam block in front to shave down to curve - not sure on this yet. may go with thicker balsa instead.
paulatgis is offline Find More Posts by paulatgis
Reply With Quote
Old Apr 01, 2012, 06:44 PM
Registered User
United States, FL, Melbourne
Joined Apr 2009
431 Posts
yeah. ill double the ailerons, maybe more. my smaller kav flies nice and scale like without super oversized ailerons.
paulatgis is offline Find More Posts by paulatgis
Reply With Quote
Old Apr 01, 2012, 06:49 PM
Registered User
United States, FL, Melbourne
Joined Apr 2009
431 Posts
oh i like that cad drawing. if you get the cockpit drawn i wonder if someone can make it enlarge to the size of my plane. I cant figure out how to make other than carve it out of foam.
paulatgis is offline Find More Posts by paulatgis
Reply With Quote
Old Apr 01, 2012, 07:40 PM
Shade Tree Aviation #2
M.Putnam's Avatar
United States, NC, Rutherfordton
Joined Jan 2002
1,092 Posts
Quote:
Originally Posted by paulatgis View Post
oh i like that cad drawing. if you get the cockpit drawn i wonder if someone can make it enlarge to the size of my plane. I cant figure out how to make other than carve it out of foam.
You could make a foam (or wood) plug of the canopy and have a clear plastic canopy vacuum formed. Of course, that sounds a whole lot easier than it really is...But it is possible.
M.Putnam is offline Find More Posts by M.Putnam
Reply With Quote
Old Apr 03, 2012, 06:19 PM
Registered User
United States, FL, Melbourne
Joined Apr 2009
431 Posts
canopy. correct not cockpit. thanks. i might just make it in layers front to back then carve in the curves. same with the cowl i suppose. flow slow flyer, should the wing leading edge be fat and round or skinny and pointy? im not sure what works best with big planes..
paulatgis is offline Find More Posts by paulatgis
Reply With Quote
Old Apr 09, 2012, 07:14 PM
Registered User
United States, FL, Melbourne
Joined Apr 2009
431 Posts
fuse and wing semi test fit while making fuselage
paulatgis is offline Find More Posts by paulatgis
Reply With Quote
Old Jun 24, 2012, 04:15 PM
Registered User
United States, FL, Melbourne
Joined Apr 2009
431 Posts
got some flimsy wire landing gear on. may need to beef it up a bit. color scheme and stab covered. i think the red and blue are reversed on the stab in the original picture from sig, but I could not confirm - too late! should look fine though.
paulatgis is offline Find More Posts by paulatgis
Reply With Quote
Old Jul 25, 2012, 09:04 PM
Registered User
United States, FL, Melbourne
Joined Apr 2009
431 Posts
wing covered. making progress slowly. need to drop those servos in and contect up control rods so I can begin covering fuse. so far balances out right at the cg with battery where it typically is.

couldnt solder the landing gear, so wrapped in thin wire and epoxied. pretty well good and tight even when i had to rebend where the wheels slide on.
paulatgis is offline Find More Posts by paulatgis
Reply With Quote
Old Nov 24, 2012, 05:20 PM
Registered User
United States, FL, Melbourne
Joined Apr 2009
431 Posts
all done. should fly fine. i might upgrade my servos, but first have to figure out how to get it to the field. 6lbs with battery and motor. 16 x 10 prop - ill see how the combo works. might fly it tomorrow.
paulatgis is offline Find More Posts by paulatgis
Reply With Quote
Old Nov 24, 2012, 08:07 PM
Shade Tree Aviation #2
M.Putnam's Avatar
United States, NC, Rutherfordton
Joined Jan 2002
1,092 Posts
Good Luck with the maiden!
M.Putnam is offline Find More Posts by M.Putnam
Reply With Quote
Old Nov 26, 2012, 06:00 PM
Registered User
United States, FL, Melbourne
Joined Apr 2009
431 Posts
Flew fine. Nice day at the club field.

Take off

big sig kavalier takeoff (0 min 25 sec)


Landing

big sig kavalier landing (0 min 15 sec)
paulatgis is offline Find More Posts by paulatgis
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Sig Kavalier for LPU in CT 06419 Hemikiller Non R/C Items (FS/W) 2 Nov 22, 2011 08:28 PM
Sold Sig Kavalier - 29 (Kit) dls Aircraft - Fuel - Airplanes (FS/W) 0 Jul 10, 2011 11:32 PM
SIG KAVALIER - Anyone do a conversion on this? Cubby Boy Sport Planes 17 Dec 15, 2005 07:30 AM
SIG Kavalier conversion tips wanted. Cubby Boy Sport Planes 0 May 02, 2004 02:41 PM
Sig Kavalier conversion slowhand Sport Planes 4 Oct 13, 2002 09:38 AM