RE: B-36 build thread and free plans  
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All Forums >> RC Airplanes >> RC Scale Aircraft >> RE: B-36 build thread and free plans
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RE: B-36 build thread and free plans - 5/15/2008 3:59:55 PM   
xb36


 

Posts: 179
Joined: 2/15/2008
From: White Bear Township, MN, USA
Status: online 		I will have to check, but I may still have the fragments that I cut out.

When I made the opening, I had no idea how much space I would need to let the gear pass thru. The mechanism on my retract is not the same as that on the full size B-36 so I needed a larger opening than the scale model should have.

I have never made fiberglass parts. If I go that route I will need to find some assistance.

Mike Roerig
mikeroerig@gmail.com

(in reply to FlyerInOKC)
       Post #: 151

RE: B-36 build thread and free plans - 5/15/2008 4:03:27 PM   
Props4ever


 

Posts: 1149
Joined: 8/3/2005
From: Canada, ON, CANADA
Status: online
quote:

ORIGINAL: FlyerInOKC

Mike the gear is looking really good, have you given any thought on the gear doors? I think fiberglass doors will be the way to go unfortunately i didn't think about it until after you had cut the hole. It would have been a lot easier to have put a layer of plastic wrap over the fuselage and then layered the fiberglass to make the dorrs directly on the fuselage to get the curve right. 20/20 hindsight!

Mike



Gee Mike, i did same mistake myself on my S Connie's fuselage, hence if i saw it before opening up nose gear bay how my friend Richie did them on his S Connie similar to how exactly you mentioned i would have been in good shape for the nose gear doors curvature part. Anyhow i'll do my best to get proper curvature by adding foam block in the bay temporally and sanding it to match its outer curve with rest of the fuselage curve to make these up.

Sammy

_____________________________

Current project: Super Constellation L1049G CF-TGE: http://www.rcuniverse.com/forum/m_4538333/tm.htm
Dash 7 or Yukon..

(in reply to FlyerInOKC)
       Post #: 152

RE: B-36 build thread and free plans - 5/15/2008 4:20:03 PM   
xb36


 

Posts: 179
Joined: 2/15/2008
From: White Bear Township, MN, USA
Status: online 		Sammy,

If I don't have the scrap pieces that I cut out for the nose gear, I will follow the same method you are. I will use a block of very light balsa sanded to the proper shape..... I also haven't worked with foam.

I love the Connie. I almost chose to design a Connie instead of the B-36. I chose the B-36 because it was my first RC design. The Connie is a little more complicated so I chose the simpler B-36.

Your build thread has more pages than mine. I haven't gone through all of it yet.

Mike Roerig
mikeroerig@gmail.com

(in reply to Props4ever)
       Post #: 153

RE: B-36 build thread and free plans - 5/16/2008 12:35:46 AM   
Props4ever


 

Posts: 1149
Joined: 8/3/2005
From: Canada, ON, CANADA
Status: online
quote:

ORIGINAL: xb36

Sammy,

If I don't have the scrap pieces that I cut out for the nose gear, I will follow the same method you are. I will use a block of very light balsa sanded to the proper shape..... I also haven't worked with foam.

I love the Connie. I almost chose to design a Connie instead of the B-36. I chose the B-36 because it was my first RC design. The Connie is a little more complicated so I chose the simpler B-36.

Your build thread has more pages than mine. I haven't gone through all of it yet.

Mike Roerig
mikeroerig@gmail.com



Mike,

This is real funny, you went exactly opposite to how i ended up doing a Connie, i also keenly looked at doing large scale B36 before i started the project but Connie has a lot of history with in my Family and with my personal connection to ex-TCA CF-TGE that was bought by MOF which we were also trying to buy for many years and were unsuccessful in the end of our campaign.

Talking about complication, yes its one difficult fuselage to do with its complex curves from all 4 sides. It's an adventure and also big challenge for me to do a my first giant scale multi engine model.

Foam is great stuff to work with, i am fortunate to have a very good friend who helped me getting started on it initially otherwise it would have become very difficult for me to do that fuselage. Your idea of using balsa blocks is good but it's a lot easier to do same with blue foam instead. Once i get to it, i'm sure i will do it with out problems.

Hey when time comes to do B36, guess who's door will i be knocking...he he

Sammy

< Message edited by Props4ever -- 5/16/2008 12:37:54 AM >

_____________________________

Current project: Super Constellation L1049G CF-TGE: http://www.rcuniverse.com/forum/m_4538333/tm.htm
Dash 7 or Yukon..

(in reply to xb36)
       Post #: 154

RE: B-36 build thread and free plans - 5/16/2008 12:56:19 AM   
FlyerInOKC


 

Posts: 362
Joined: 11/17/2004
From: Oklahoma City, OK, USA
Status: offline 		I have seen guys tape plastic wrap on the fuselage and use several layers of fiberglass and resin to make a sheet larger than necessary. Once the gear is installed you cut the shape of the doors you need out of the molded sheet and hinge to the remaining piece and then laminate it the fuselage.

Mike

(in reply to Props4ever)
       Post #: 155

RE: B-36 build thread and free plans - 5/16/2008 1:14:17 AM   
8178



Posts: 2834
Joined: 5/25/2004
From: _ , USA
Status: online 		I’ve been following your thread from the beginning but somehow I’m missing that part that explains the large gap in the front of the fuselage by the nose gear. What is the gap for?

(in reply to FlyerInOKC)
       Post #: 156

RE: B-36 build thread and free plans - 5/16/2008 3:30:55 AM   
xb36


 

Posts: 179
Joined: 2/15/2008
From: White Bear Township, MN, USA
Status: online 		I will attach one photo ( a repeat photo ) to confirm that we are talking about the same gap.

The gap wasn't actually planned. I slid the fuse formers on the carbon fiber fuse spars and started sheeting the fuse formers with dampened 1/16" balsa sheets (they bend very easy when damp). When I got towards the nose area I found that the sheet I had in hand was a bit too short to make it to the next fuse former. I was about to dig out a larger sheet that wouldn't leave a gap when it dawned on me that it may be handy to have that gap for a while. I had a rough idea in my mind how the support for the nose gear might be constructed and if the gap were there, it would be easier to epoxy or screw the landing gear mount to the plywood fuse former. Once the support for the nose gear mount was secured in place ( I used epoxy ) I could cut a strip of balsa sheeting and fill in the gap. The gap did make it easier to epoxy the nose gear support to the plywood fuse former. I was tempted to open up the other side but I was able to get the epoxy to run down exposy the side without the gap.

I suppose it's time to close up the gap since it is no longer needed.

Good question, I will try to get that gap ed in within the next couple of days.

My wife has most of my time booked for tonight, tomorrow night, and Saturday so there will be minimal progress until Sunday.

Mike Roerig
mikeroerig@gmail.com

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(in reply to 8178)
       Post #: 157

RE: B-36 build thread and free plans - 5/16/2008 3:52:46 AM   
xb36


 

Posts: 179
Joined: 2/15/2008
From: White Bear Township, MN, USA
Status: online 		Sammy,

Your post suggested that I put some plastic wrap on the fuse before cutting it open so that I could make a fiberglass mold that would be used for the gear doors.

That is a great idea, but I haven't used fiberglass so of course I wouldn't think to do it the easy way. It shouldn't be too hard to make balsa doors to match the contour.

Next time your in St.Paul Minnesota feel free to stop by. It won't be long before I will be ready to glass the entire plane.... and I haven't a clue how to do it yet. I have a couple of inquiries out but I haven't received a confirmation of assistance yet. My hope is that when the B-36 is built with motors, radio, batteries, and control surface working I will bring it to a local rc club meeting and someone will volunteer to show me how to proceed. If that doesn't work out, I am not sure what I am going to do. I do have a video tape of someone else glassing their plane so that's a start. One step at a time......

Mike Roerig
mikeroerig@gmail.com


(in reply to xb36)
       Post #: 158

RE: B-36 build thread and free plans - 5/16/2008 2:20:42 PM   
xb36


 

Posts: 179
Joined: 2/15/2008
From: White Bear Township, MN, USA
Status: online 		I commented earlier about the gap on the side of the fuse near the nose gear. I should have added a bit more info.

There was a need for a small bit of a gap to allow the stand-off to protrude as shown in an earlier photo here. I did one side with a small gap and the other side had a larger gap due to the shorter piece of balsa sheeting.

Two of the carbon fiber tube fuse spars run the full length of the fuse and the tubes pass through the stand-offs. The stand-offs made sure that I built a straight fuse.

Mike Roerig
mikeroerig@gmail.com

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(in reply to xb36)
       Post #: 159

RE: B-36 build thread and free plans - 5/16/2008 4:41:11 PM   
8178



Posts: 2834
Joined: 5/25/2004
From: _ , USA
Status: online 		Thanks for the explanation. It is very clear now. Great work on an interesting project. I’ve been to the Air Force museum many times in Dayton and I’m always amazed with the B36.

(in reply to xb36)
       Post #: 160

RE: B-36 build thread and free plans - 5/17/2008 2:51:47 AM   
xb36


 

Posts: 179
Joined: 2/15/2008
From: White Bear Township, MN, USA
Status: online 		The gap is filled now....

Mike Roerig
mikeroerig@gmail.com

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(in reply to 8178)
       Post #: 161

RE: B-36 build thread and free plans - 5/17/2008 7:08:01 PM   
FlyerInOKC


 

Posts: 362
Joined: 11/17/2004
From: Oklahoma City, OK, USA
Status: offline 		Once the airplane is covered no onw will ever know a gap existed. I was looking at the wheel you have in the photo, might I suggest mounting on a stud and chucking it up in a drill press to round the corners? An emory board would probably work to round the edge just to make it look scale. If I get any more green with envy over yjis airplane people are going to think I'm related to the Jolly Green Giant!

Mike

(in reply to xb36)
       Post #: 162

RE: B-36 build thread and free plans - 5/17/2008 7:43:54 PM   
xb36


 

Posts: 179
Joined: 2/15/2008
From: White Bear Township, MN, USA
Status: online 		I had a bit of time, so I decided to work on finishing up the wing mount. My wing mount uses sliding carbon fiber tubing from the wing to fuse. I had the tubes in place within the wing, but I hadn't installed the 2 tubes in the fuselage for the trailing edge of the wing. It take time to get perfect alignment ( the tube from the wing slides in to the tube in the fuse ). I did manage to get one of the fuse tubes in place. It is difficult to get a good side view photo of the fuse tube but I think you can get the idea from the photo showing the end of the fuse tube. The wing tube is a perfect fit within the fuse tube so there is absolutely no looseness.

Here are some photos.

One photo show how the tubes slide out of the wing.

Another photo shows that I still have one fuse tube to install and the other shows both installed. You can also see the end of the carbon fiber fuse spar. It couldn't run the full length of the fuse because of the wing mount.

I will have to get the last of the wing mounting tubes in the fuse installed later. I must head off to a wedding (not mine).

Mike Roerig
mikeroerig@gmail.com

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(in reply to xb36)
       Post #: 163

RE: B-36 build thread and free plans - 5/17/2008 7:46:04 PM   
xb36


 

Posts: 179
Joined: 2/15/2008
From: White Bear Township, MN, USA
Status: online 		I hadn't thought about rounding the wheels. I will have to take a look at photos and think about taking care of that. Thanks for the suggestion.

Mike Roerig
mikeroerig@gmail.com

(in reply to xb36)