Plans for J-3 or L-4 Cub    Gallery
View related threads: (in this forum | in all forums)

Logged in as Guest



Users viewing this topic: none
    Search This Thread  
 
Printable Version

All Forums >> RC Airplanes >> RC Scale Aircraft >> Plans for J-3 or L-4 Cub
Page: [1]

Tower Hobbies Get Coupon Codes Brands  
Login
Message << Older Topic   Newer Topic >>
Plans for J-3 or L-4 Cub - 11/22/2010 7:38 PM   
ulpilotrmh


 

Posts: 67
Score: 100
Joined: 9/20/2010
Last Login: 3/31/2013
From: Tavares, FL, USA
Status: offline 		Hey Guys,

Who has the best J-3 or L-4 Cub plans for scratch building, and sells them separate from the kit?

Russ

Hide Signatures
       Post #: 1

RE: Plans for J-3 or L-4 Cub - 11/22/2010 9:08 PM   
szig



Posts: 149
Score: 100
Joined: 6/28/2004
Last Login: 9/21/2012
From: Santiago, CHILE
Status: offline 		These are the plans that I know. At least the L-4 1/4 scale.


https://balsausa.com/store/category.php?id_category=118

Hide Signatures

(in reply to ulpilotrmh)
       Post #: 2

RE: Plans for J-3 or L-4 Cub - 11/23/2010 3:26 AM   
sir lawrence


 

Posts: 11
Score: 100
Joined: 2/5/2006
Last Login: 2/1/2011
From: montclair, CA, USA
Status: offline 		the problem with most of these Scale Cub kits is the fuselage width seems so much wider than the real thing ... Mine is pilot built up 1/4 J-3 and of course I love it but is still so much wider than the real one ...
I can only tell you that the sig 30 or 40 sized cub was the most to scale cub I ever owned ...
I would check your local airport and search a real one out .. whew they are knee knockers big time
hope that helps

check this cub out ... I would not have beleived it till I saw this ... radial cub
there is a tricycle geared cub also ... if I could find it again .. it would be posted
good luck
sirlawrence

Attachments
Click to see the file in new window.Attachment.bmp Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize 		Click to see the file in new window.Attachment.bmp


Hide Signatures

(in reply to szig)
       Post #: 3

RE: Plans for J-3 or L-4 Cub - 11/23/2010 4:35 AM   
Edwin


 

Posts: 5936
Score: 156
Joined: 2/8/2002
Last Login: 5/19/2013
From: Leander, TX, USA
Status: offline 		I'm building the busa 1/4 scale J3 and L4. There is some work to do to make it scale. The ailerons are top hinged, I changed it to bottom hinged as in scale. The stab is too far back and has to be moved forward. Thats the extent of the changes I've done. One thing to remember in the L4 is the top cabin structure is pretty weak with the greenhouse arrangement.
Edwin

Hide Signatures

(in reply to sir lawrence)
       Post #: 4

RE: Plans for J-3 or L-4 Cub - 11/23/2010 5:27 AM   
GAP-RCU


 

Posts: 417
Score: 120
Joined: 11/5/2002
Last Login: 5/19/2013
From: Round Rock, TX, USA
Status: offline
quote:

ORIGINAL: Edwin

I'm building the busa 1/4 scale J3 and L4. There is some work to do to make it scale. The ailerons are top hinged, I changed it to bottom hinged as in scale. The stab is too far back and has to be moved forward. Thats the extent of the changes I've done. One thing to remember in the L4 is the top cabin structure is pretty weak with the greenhouse arrangement.
Edwin


Sig's 1/5 J-3 is done the same way, with the hinges incorrectly on the top of the aileron. I don't understand why Sig or BUSA thought that would be easier; I plan to change mine too during the build (hopefully, this winter). Sig also omitted the half ribs in the wing, and has the wrong shape for the rear window. Sig used a true semi-circle for the rear window; it should be a "drooped D" shape. The fuselage width, however, is scale, as I checked that before buying the Robart gear.

Hide Signatures

(in reply to Edwin)
       Post #: 5

RE: Plans for J-3 or L-4 Cub - 11/23/2010 6:26 AM   
buzzard bait


 

Posts: 2489
Score: 115
Joined: 1/2/2003
Last Login: 5/16/2013
From: Ithaca, NY, USA
Status: offline 		Are you going to correct the rear window? I was wondering how hard that would be. It's a glaring error that everyone seems to notice...too bad Sig missed it.

Jim

Hide Signatures

(in reply to GAP-RCU)
       Post #: 6

RE: Plans for J-3 or L-4 Cub - 11/23/2010 7:51 AM   
GAP-RCU


 

Posts: 417
Score: 120
Joined: 11/5/2002
Last Login: 5/19/2013
From: Round Rock, TX, USA
Status: offline
quote:

ORIGINAL: buzzard bait

Are you going to correct the rear window? I was wondering how hard that would be. It's a glaring error that everyone seems to notice...too bad Sig missed it.

Jim


I definitely will by removing/adding filler wood, but will have to cut a new window pane, since the one supplied with the kit is vacuum formed to the wrong shape. I'll also make other scale corrections, but all in all, the 1/5 kit is a good basis to start with (for a non-competition model).


Hide Signatures

(in reply to buzzard bait)
       Post #: 7

RE: Plans for J-3 or L-4 Cub - 11/23/2010 8:36 AM   
Wayne22



Posts: 5383
Score: 105
Joined: 4/10/2002
Last Login: 5/8/2013
From: Strathcona county, AB, CANADA
Status: offline
quote:

I don't understand why Sig or BUSA thought that would be easier;


they are sport models, and they top hinge them to provide differential aileron motion....the up going aileron goes up higher than the downward one, thus making it somewhat less rudder demanding......and easier to fly for the average modeler.



_____________________________

All I ask is for a chance to prove that money can't make me happy......

Hide Signatures

(in reply to GAP-RCU)
       Post #: 8

RE: Plans for J-3 or L-4 Cub - 11/23/2010 3:57 PM   
buzzard bait


 

Posts: 2489
Score: 115
Joined: 1/2/2003
Last Login: 5/16/2013
From: Ithaca, NY, USA
Status: offline 		You can set the position of the control horn relative to the hinge line to give differential, regardless of where the hinge is. I don't really see how putting the hinge at the top helps anything. (And of course the position of the attachment of the control rod to the servo arm can provide differential too.)

GAP, I hope you'll post your corrections to the Sig 1/5 kit. Kit reviews are pretty useless about these things...just glowing reports with no attention to deviations from scale. It's hard to know whether to buy the kit if you don't know what it would take to make it scale. Glad to hear that the Sig kit is workable.

Jim

Hide Signatures

(in reply to Wayne22)
       Post #: 9

RE: Plans for J-3 or L-4 Cub - 11/23/2010 5:44 PM   
GAP-RCU


 

Posts: 417
Score: 120
Joined: 11/5/2002
Last Login: 5/19/2013
From: Round Rock, TX, USA
Status: offline
quote:

ORIGINAL: buzzard bait

...GAP, I hope you'll post your corrections to the Sig 1/5 kit. Kit reviews are pretty useless about these things...just glowing reports with no attention to deviations from scale. It's hard to know whether to buy the kit if you don't know what it would take to make it scale. Glad to hear that the Sig kit is workable.

Jim


I will. I've gathered info from Banka, and am still looking for an opportunity to shoot some detail photos. I'll probably use the classic scheme of the Smithsonian's J-3, since I have personal connections to that aircraft.

Hide Signatures

(in reply to buzzard bait)
       Post #: 10

RE: Plans for J-3 or L-4 Cub - 12/12/2010 3:19 AM   
dadragon


 

Posts: 342
Score: 112
Joined: 12/20/2008
Last Login: 3/14/2013
From: pine bluffs, WY, USA
Status: offline 		Hi guys.I have a SIG 1/4 J-3 and the plans got destroyed so I got a new set that my local hobby dealer ordered.around $16.00,that has 4 sheets.it is a vary easy bird to build.

Hide Signatures

(in reply to GAP-RCU)
       Post #: 11

RE: Plans for J-3 or L-4 Cub - 12/13/2011 12:45 AM   
jeaton01


 

Posts: 15
Score: 100
Joined: 9/8/2002
Last Login: 3/28/2013
From: Woodland, CA, USA
Status: offline 		I published 1/6 scale Cub plans many years ago in Scale R/C Modeler and worked pretty hard to make it exact scale. The prototype even had a trimmable in flight stabilizer. I still have the plans available. I built two at the time. I later donated the first to a Veteran's hospital, but I'm still flying the second. It was electric originally (in 1987) and is again now. It has also flown with a diesel, and an OS 30 2 stroke. It weighs 3 pounds 10 ounces the way it is now.

Plans are on my web site,
http://www.yolo.net/~jeaton/gems/6cub.htm

I really need to take some recent photos, I take a lot of pictures at our club's events, but I always forget to get pictures of my own airplanes.

John




_____________________________

John Eaton
jeaton@afes.com

Hide Signatures

(in reply to GAP-RCU)
       Post #: 12

RE: Plans for J-3 or L-4 Cub - 12/13/2011 1:39 AM   
buzzard bait


 

Posts: 2489
Score: 115
Joined: 1/2/2003
Last Login: 5/16/2013
From: Ithaca, NY, USA
Status: offline 		I checked out your site and it looks like a really nice Cub. It must be a wonderful flier at such a light weight.

Jim

Hide Signatures

(in reply to jeaton01)
       Post #: 13

RE: Plans for J-3 or L-4 Cub - 12/13/2011 5:09 AM   
ARUP


 

Posts: 1945
Score: 134
Joined: 1/21/2007
Last Login: 5/19/2013
From: Taylorsville, KY, USA
Status: offline 		The 1/3 Neilitz (sp?) J-3 plan is pretty decent from what I remember. He uses dowels to mimic the tube structure. You have to actually build some steel or alum tube structure to tie gear, cabin and wing mounts together. A good set of 3-views and photos will give you the 'greenhouse' you need for the L-4. I have a set of the plans... somewhere...

Hide Signatures

(in reply to buzzard bait)
       Post #: 14

RE: Plans for J-3 or L-4 Cub - 12/13/2011 12:39 PM   
woodworm



Posts: 51
Score: 100
Joined: 10/27/2005
Last Login: 5/17/2013
From: Geneva, SWITZERLAND
Status: offline 		Hello,
the most scale J-3 i know is the Paolo Severin Kit, just visit this site:http://www.paoloseverin.it/Piper/Piper.html

Woodworm

_____________________________

Cub Brotherhood #54
Club Saito member #514

Hide Signatures

(in reply to ARUP)
       Post #: 15

RE: Plans for J-3 or L-4 Cub - 12/13/2011 4:45 PM   
misterbill



Posts: 164
Score: 100
Joined: 10/8/2003
Last Login: 5/12/2013
From: Cobourg, ON, CANADA
Status: offline 		The most accurate plans are the Nelitz 1/3 scale ones - he was a World Champion scale builder.
Larry Pierce (he's on this forum - LT Pierce)) has Bob's original mylars, so you can get a set of spot on plans printed from him - unlike some of the 3rd(or more) generation ones lurking on the web.

Everyone else seems to have compromised on a bunch of stuff - especially the cabin width.

There are a couple of build threads on RCU - here's one http://www.rcuniverse.com/forum/fb.asp?m=10852958

Mine's nearly done - attached is a pic of the almost complete cabin to give you an idea of the accuracy of the plan - no model structure visible...

Cheers,
Mike

Attachments
Click to see fullsize image.
Click for fullsize


< Message edited by misterbill -- 12/15/2011 6:20 PM >

_____________________________

1/3 Sopwith Pup, 1/3 Nelitz J3 Cub
1/3 DH82A Tiger Moth (underway), 1/4 Jungmeister (2nd one, underway)

Hide Signatures

(in reply to woodworm)
       Post #: 16

RE: Plans for J-3 or L-4 Cub - 12/14/2011 2:18 AM   
TFF


 

Posts: 3588
Score: 143
Joined: 10/30/2006
Last Login: 5/19/2013
From: Memphis, TN, USA
Status: offline 		Severin Kit has to be the nicest ever and the most expensive ever. You want the best, get a real set from Wag Aero; good enough to build a real plane.

Hide Signatures

(in reply to misterbill)
       Post #: 17

RE: Plans for J-3 or L-4 Cub - 12/15/2011 1:39 AM   
jeaton01


 

Posts: 15
Score: 100
Joined: 9/8/2002
Last Login: 3/28/2013
From: Woodland, CA, USA
Status: offline
quote:

ORIGINAL: buzzard bait

I checked out your site and it looks like a really nice Cub. It must be a wonderful flier at such a light weight.

Jim


Thanks, Jim. I've done a lot of work on a 1/4 scale version but I haven't got them done. I'd like to replicate the centersection with two part wings but haven't got that sorted yet in a simple to work with method. At least there are good alternatives for strut material now.

John


_____________________________

John Eaton
jeaton@afes.com

Hide Signatures

(in reply to buzzard bait)
       Post #: 18

RE: Plans for J-3 or L-4 Cub - 12/15/2011 4:41 PM   
ARUP


 

Posts: 1945
Score: 134
Joined: 1/21/2007
Last Login: 5/19/2013
From: Taylorsville, KY, USA
Status: offline 		Misterbill- your Cub is really sweet! Is the tank functional?

Hide Signatures

(in reply to jeaton01)
       Post #: 19

RE: Plans for J-3 or L-4 Cub - 12/15/2011 6:16 PM   
misterbill



Posts: 164
Score: 100
Joined: 10/8/2003
Last Login: 5/12/2013
From: Cobourg, ON, CANADA
Status: offline 		Sort of - hiding in the scale tank you see in the pic is the Sullivan one! Didn't fancy leaks etc..
It does fill from the scale position however.

And to answer another question, the center section/wing fastening on a Nelitz Cub is scale - pic attached.

Mike

Attachments
Click to see fullsize image.
Click for fullsize


_____________________________

1/3 Sopwith Pup, 1/3 Nelitz J3 Cub
1/3 DH82A Tiger Moth (underway), 1/4 Jungmeister (2nd one, underway)

Hide Signatures

(in reply to ARUP)
       Post #: 20

RE: Plans for J-3 or L-4 Cub - 1/10/2012 3:19 PM   
EU1a


 

Posts: 37
Score: 100
Joined: 9/24/2003
Last Login: 3/11/2013
From: Bay Shore, NY, USA
Status: offline 		I would echo the Nelitz Cub being the most scale. The glaring thing I see with the Paolo Severin Kit is that the lower door hits the wing strut. Maybe I'm being petty and I'm sure it can be corrected. It just irks me. I feel Cubs should be flown with the door and window open.

Hide Signatures

(in reply to misterbill)
       Post #: 21

RE: Plans for J-3 or L-4 Cub - 1/10/2012 8:24 PM   
Cub Man



Posts: 605
Score: 100
Joined: 1/1/2003
Last Login: 5/17/2013
From: LEXINGTON, KY, USA
Status: offline 		Well my L-4 plans are about finished, the wing sheet is done, now to just finish the clean up on the fus side. take a look at my L-4 on my site.

_____________________________

The Cub Den, www.thecubden.org
Cub Brother #1 Ultimate Brother #3 Waco Brother #120

Hide Signatures

(in reply to EU1a)
       Post #: 22

RE: Plans for J-3 or L-4 Cub - 1/12/2012 12:16 AM   
MinnSpin



Posts: 266
Score: 101
Joined: 6/26/2002
Last Login: 1/17/2013
From: Alexandria, MN, USA
Status: offline 		I have an extra set of full size plans and the manual for Great Planes J-3 Cub 40 Size Full Build Kit, if you're interested - cost covers postage.

_____________________________

Waco Brother #141
Saito 56, 72, 82, 91, 100, 125, Twin 60, leaving room for a radial

Hide Signatures

(in reply to ulpilotrmh)
       Post #: 23

Page:   [1]
All Forums >> RC Airplanes >> RC Scale Aircraft >> Plans for J-3 or L-4 Cub
Page: [1]





Jump to:


 
Google 



Search | Marketplace | Event Calendar | Local Clubs | Magazine | Product Ratings | New Products | Discussion Forums

Photo Gallery | Instructor Search | Field|Track|Marina Search

Advertisers | Hobby Vendor Resources | Rate Manufacturers | Sign In/Sign Up

SITE MAP!   : :   FORUM RULES

RC Universe is a service of Internet Brands, Inc. Copyright © 2001-2013.

Charities we support that also need your help
Yorkie Rescue | Humane Society | ASPCA | Crohn's-Colitis America


0.813RCU1