Go Back  RCU Forums > RC Airplanes > Scratch Building, Aircraft Design, 3D/CAD
Reload this Page >

Scratch building 105" WS S Connie L-1049 (Pics added)

Notices
Scratch Building, Aircraft Design, 3D/CAD If you are starting/building a project from scratch or want to discuss design, CAD or even share 3D design images this is the place. Q&A's.

Scratch building 105" WS S Connie L-1049 (Pics added)

Old 09-01-2014, 08:00 PM
  #1651  
iron eagel
 
iron eagel's Avatar
 
Join Date: Jul 2004
Location: Middleboro, MA
Posts: 3,275
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by Props4ever
Well guys it's seems as I don't have that desire in me now days to fly this bird. I have been procrastinating on couple things to finish on it but it's not in me to do so anytime soon. I'm guilty of saying it will be done in couple weeks over few times but reality is I'm very afraid of losing it and it will hurt me a a lot God forbid if it happened!. This bird means a lot to me and it costed me In thousands to build it not to mention years it took to be built, so maybe I'll get over this hard step n will fly it before the end of this year, time will tell. Lately it feels as if I'm pushing myself to finish her up and that feeling just puts me off. I really don't know what it is but it is what it is. Hope some of you guys can understand my feeling.
Ken pretty much gave you the best advice possible to which I will add this.

Sam,
You have got to look at it this way.
Yes it cost a lot of both time and effort to build it but if something did happen you can always build another, and it will come out lighter stronger and better.
At least that's what I think as I prepare a plane for maiden.
One thing you have to accept with this hobby is that sometimes planes crash.
I always try to look at it as a learning experience.
Old 09-02-2014, 06:53 AM
  #1652  
FlyerInOKC
My Feedback: (6)
 
FlyerInOKC's Avatar
 
Join Date: Nov 2004
Location: Oklahoma City, OK
Posts: 14,108
Received 263 Likes on 231 Posts
Default

Start another build and by the time it's finish you'll be flying the Connie with no reservations!
Old 09-06-2014, 02:58 PM
  #1653  
8178
My Feedback: (17)
 
8178's Avatar
 
Join Date: May 2004
Location: Atlanta, GA
Posts: 4,348
Likes: 0
Received 6 Likes on 3 Posts
Default

Originally Posted by Props4ever
Well guys it's seems as I don't have that desire in me now days to fly this bird. I have been procrastinating on couple things to finish on it but it's not in me to do so anytime soon. I'm guilty of saying it will be done in couple weeks over few times but reality is I'm very afraid of losing it and it will hurt me a a lot God forbid if it happened!. This bird means a lot to me and it costed me In thousands to build it not to mention years it took to be built, so maybe I'll get over this hard step n will fly it before the end of this year, time will tell. Lately it feels as if I'm pushing myself to finish her up and that feeling just puts me off. I really don't know what it is but it is what it is. Hope some of you guys can understand my feeling.
Props4ever,

A major part of the reward in scratch building is the rush you get when you fly it. The only way that happens is investing your skill and many hours of the design, engineering and building process of the beast. All scratch builders go through the exact same thing. When I get stuck on a build, I find that it works best if I just suck it up and get out in the shop and get building. It has always paid dividends.

Make sure you do your homework on the control system installation, power system, wing/stab/thrust alignment and CG. Nothing to be afraid of.
Old 09-08-2014, 10:05 AM
  #1654  
iron eagel
 
iron eagel's Avatar
 
Join Date: Jul 2004
Location: Middleboro, MA
Posts: 3,275
Likes: 0
Received 0 Likes on 0 Posts
Default

You are so right, the feeling of accomplishment to see a plane you designed and built fly is hard to match.
Old 10-24-2014, 11:09 AM
  #1655  
ranpreetbhatia
Junior Member
 
Join Date: Oct 2014
Posts: 1
Likes: 0
Received 0 Likes on 0 Posts
Default

Hey guys,

A new member here. I am looking for some help with Design Data for Constellation 1049. I am in process of creating a 1:1 scaled cad model of the plane`s wing. However, I am unable to determine the chord length for root & tip aifoils from the drawing that I have. I was hoping someone here would be able to help with the process of calculating these chord lengths. Any help will be appreciated. I have attached my reference drawing below.
Attached Thumbnails Click image for larger version

Name:	Connie203view.jpg
Views:	324
Size:	392.4 KB
ID:	2041936  
Old 10-24-2014, 12:19 PM
  #1656  
ByLoudDesign
 
ByLoudDesign's Avatar
 
Join Date: Sep 2005
Location: Mesa, AZ
Posts: 1,456
Likes: 0
Received 0 Likes on 0 Posts
Default

You can get good data from here. http://www.bobsairdoc.com/, I use them a lot. I try not to use the small 3-views you find online as they a usually just nice sketches that some one threw a bunch of miscellaneous dimensions on.

Last edited by ByLoudDesign; 10-24-2014 at 12:23 PM.
Old 10-24-2014, 01:16 PM
  #1657  
Buck Barker
My Feedback: (4)
 
Join Date: Dec 2001
Location: Rochestern/a
Posts: 75
Likes: 0
Received 0 Likes on 0 Posts
Default

Ranpreetbhatia. Sorry, I m not much into the design end of airplanes, and my model is a 134" wingspan version. It was from a Don Smith plan. While you are designing, I am looking for a set of plans for a Lockheed Electra, L188, of the same scale as the Connie.
Old 10-24-2014, 02:15 PM
  #1658  
ByLoudDesign
 
ByLoudDesign's Avatar
 
Join Date: Sep 2005
Location: Mesa, AZ
Posts: 1,456
Likes: 0
Received 0 Likes on 0 Posts
Default

I have a Lockheed P-3 Orion, is a modification of the Lockheed L-119 Electra in 1:10 [120" span. It is being built in Australia: P-3 ~ http://www.rcgroups.com/forums/showthread.php?t=1745119
Old 10-24-2014, 03:29 PM
  #1659  
Buck Barker
My Feedback: (4)
 
Join Date: Dec 2001
Location: Rochestern/a
Posts: 75
Likes: 0
Received 0 Likes on 0 Posts
Default

Tell me more. I don`t know what the difference is between the l119 and the L188 is, but I am shure I could modify it to meet my needs. The Connie was the first airplane I flew for Eastern air lines, and the Electra was the first plane I flew as Captain, so they mean something to me. The Electra fuselage should be easier to build because it is a strait tube, while the Connie had a hump in it, which was not on the plans. I had to modifiy it, mostly by sight, and it came out good. I`ll have pictures of it by the end of next week.
Old 10-29-2014, 09:06 AM
  #1660  
Props4ever
Thread Starter
 
Join Date: Aug 2005
Location: Mississauga, ON, CANADA
Posts: 4,196
Likes: 0
Received 1 Like on 1 Post
Default

Update:

Finally now that I have urge to fly this model, weather can't make up it's mind!, was out with it yesterday testing everything, taxing it around but it was crazy windy at 24C temp. So couldn't do high speed test runs or even a small hop flight. Thought it would be same or better today, yet its 11C and same crazy windy....oh well let's see when it will be good to it. But im happy to say, all systems are working well except for air in landing gears system. Im still not sure if I should leave it empty in current locked down position or fill it up buy im not going to operate landing gears on first 3 or 4 flights...
Old 10-29-2014, 09:48 AM
  #1661  
FlyerInOKC
My Feedback: (6)
 
FlyerInOKC's Avatar
 
Join Date: Nov 2004
Location: Oklahoma City, OK
Posts: 14,108
Received 263 Likes on 231 Posts
Default

Got something in 1/4 or 1/3 scale? They handle the wind nicely.
Old 10-29-2014, 10:26 AM
  #1662  
ByLoudDesign
 
ByLoudDesign's Avatar
 
Join Date: Sep 2005
Location: Mesa, AZ
Posts: 1,456
Likes: 0
Received 0 Likes on 0 Posts
Default

They build to light to save on motors or engines and end up with a huge kite!
Old 10-29-2014, 10:41 AM
  #1663  
FlyerInOKC
My Feedback: (6)
 
FlyerInOKC's Avatar
 
Join Date: Nov 2004
Location: Oklahoma City, OK
Posts: 14,108
Received 263 Likes on 231 Posts
Default

I got to admit a number of my airplanes resemble their own we both could stand to lose a little weight!
Old 10-29-2014, 11:01 AM
  #1664  
aerowoof
 
Join Date: Jun 2006
Location: pembroke, NH
Posts: 2,985
Likes: 0
Received 2 Likes on 2 Posts
Default

Sammi,
I would leave them down and locked,one less thing to worry about while trimming the first flight and the cg may shift when retracted that could cause some unexpected problem try to get a video.
Old 11-02-2014, 11:15 AM
  #1665  
Props4ever
Thread Starter
 
Join Date: Aug 2005
Location: Mississauga, ON, CANADA
Posts: 4,196
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by aerowoof
Sammi,
I would leave them down and locked,one less thing to worry about while trimming the first flight and the cg may shift when retracted that could cause some unexpected problem try to get a video.
Thanks, that's how I plan on maidening her with gears down and in locked position.

If I think about the cg with gears up or down I don't think with this model It will change alot as mains fold forward and nose gear folds backwards into the fuselage. But I will see how it is on the table first before retracting them during flights.
Old 11-04-2014, 06:34 PM
  #1666  
invertmast
My Feedback: (23)
 
invertmast's Avatar
 
Join Date: Dec 2003
Location: Capon Bridge, WV
Posts: 8,192
Received 223 Likes on 114 Posts
Default

I never test fly a model without all systems 100% operational. It doesnt matter if its my model or someone elses, if its not 100% ready and prepped (that includes full pressure in air systems), it doesnt leave the ground.

Reason for this, ive had more than one model that NEEDED the gear just to get above the tree line. Not to mention a multi engine has better engine out performance with the gear up.
Old 11-07-2014, 11:58 PM
  #1667  
Props4ever
Thread Starter
 
Join Date: Aug 2005
Location: Mississauga, ON, CANADA
Posts: 4,196
Likes: 0
Received 1 Like on 1 Post
Default

Well due to weather pretty much gone down to lower single digits, I highly doubt maiden will happen now unless it's done on skies....lol

Also had a small failure yesterday when going through tail controls, wishbone control bracket that was made couple years ago to control both elevators with one servo from the middle of the fuselage has failed its solder joint internally!, this made both elevators to deflect freely....I've now gone back to original plan A route and will be placing 2 servos, 1 on each side to control both elevators separately.
Attached Thumbnails Click image for larger version

Name:	20141108_003416.jpg
Views:	63
Size:	1.12 MB
ID:	2045794   Click image for larger version

Name:	20141108_003410.jpg
Views:	47
Size:	1.07 MB
ID:	2045796   Click image for larger version

Name:	20141108_003359.jpg
Views:	41
Size:	1.03 MB
ID:	2045797   Click image for larger version

Name:	20141108_003351.jpg
Views:	47
Size:	1.11 MB
ID:	2045799  

Last edited by Props4ever; 11-08-2014 at 12:03 AM.
Old 11-08-2014, 12:08 PM
  #1668  
Props4ever
Thread Starter
 
Join Date: Aug 2005
Location: Mississauga, ON, CANADA
Posts: 4,196
Likes: 0
Received 1 Like on 1 Post
Default

Made original servo bays bigger in the bottom of the stabilizer on both sides to fit Hitec 645MG servos and connect them to the elevator through control torque rods and horns externally. This saves time and energy.
Attached Thumbnails Click image for larger version

Name:	20141108_133617.jpg
Views:	56
Size:	3.30 MB
ID:	2045905   Click image for larger version

Name:	20141108_133623.jpg
Views:	48
Size:	3.30 MB
ID:	2045906   Click image for larger version

Name:	20141108_133629.jpg
Views:	45
Size:	2.30 MB
ID:	2045907   Click image for larger version

Name:	20141108_134545.jpg
Views:	44
Size:	3.45 MB
ID:	2045908  
Old 11-08-2014, 12:17 PM
  #1669  
ByLoudDesign
 
ByLoudDesign's Avatar
 
Join Date: Sep 2005
Location: Mesa, AZ
Posts: 1,456
Likes: 0
Received 0 Likes on 0 Posts
Default

It is always hard to do that brain surgery, it can be fatal! Looks like the patient will live! LOL!
Old 11-08-2014, 01:02 PM
  #1670  
Props4ever
Thread Starter
 
Join Date: Aug 2005
Location: Mississauga, ON, CANADA
Posts: 4,196
Likes: 0
Received 1 Like on 1 Post
Default

That's why im not at all in any rush to get her into air until its all perfectly ready to fly. Checks over checks revealed this issue and one that could have killed her on takeoff!.
Old 11-08-2014, 02:09 PM
  #1671  
ByLoudDesign
 
ByLoudDesign's Avatar
 
Join Date: Sep 2005
Location: Mesa, AZ
Posts: 1,456
Likes: 0
Received 0 Likes on 0 Posts
Default

Really! Don't want to trash months of work to say nothing about thousands of dollars because you did not take a few hours to check and recheck the controls!
Old 11-08-2014, 02:22 PM
  #1672  
aerowoof
 
Join Date: Jun 2006
Location: pembroke, NH
Posts: 2,985
Likes: 0
Received 2 Likes on 2 Posts
Default

blessing in disguise that it happened on the ground while checking everything over. And now have time to correct it.
Old 11-08-2014, 03:01 PM
  #1673  
Propworn
My Feedback: (3)
 
Propworn's Avatar
 
Join Date: Jul 2002
Location: Canada
Posts: 2,477
Received 28 Likes on 23 Posts
Default

The linkage that failed doesn't look very robust for the size of model. If it is 4 40 rod its strength is in line with the rod not at right angles as it looks like it was being used. My quarter scale Cubs and Aeronca used a similar setup but the elevator actuator was 5/32 and the 90 degree lever was hard brass on each side the ball clevis silver soldered to the wire. Even if soldered correctly it doesn't look robust enough to do the job. Also it looks like a cold solder joint and lack of cleaning the flux afterward contributed to the failure. In the next pictures is that the underside of the stab? It looks like raw unfilled fiberglass cloth not exactly scale is it?

After all the hoopla I was expecting a lot better. Good luck with the maiden.

Dennis
Old 11-10-2014, 10:11 AM
  #1674  
FlyerInOKC
My Feedback: (6)
 
FlyerInOKC's Avatar
 
Join Date: Nov 2004
Location: Oklahoma City, OK
Posts: 14,108
Received 263 Likes on 231 Posts
Default

Originally Posted by Props4ever
Well due to weather pretty much gone down to lower single digits, I highly doubt maiden will happen now unless it's done on skies....lol

Also had a small failure yesterday when going through tail controls, wishbone control bracket that was made couple years ago to control both elevators with one servo from the middle of the fuselage has failed its solder joint internally!, this made both elevators to deflect freely....I've now gone back to original plan A route and will be placing 2 servos, 1 on each side to control both elevators separately.
I'm glad to hear the discovery was made now instead during the maiden flight!
Old 11-10-2014, 10:50 AM
  #1675  
8178
My Feedback: (17)
 
8178's Avatar
 
Join Date: May 2004
Location: Atlanta, GA
Posts: 4,348
Likes: 0
Received 6 Likes on 3 Posts
Default

It is a cold solder joint. You need to rough up the wire surface with a file and use acid core solder for those type of joints and then clean the acid off really good so it does not corrode.

Last edited by 8178; 11-10-2014 at 10:52 AM.

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.