RE: B-29 SUPERFORTRESS BUILD THREAD  
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All Forums >> RC Airplanes >> RC Warbirds and Warplanes >> RE: B-29 SUPERFORTRESS BUILD THREAD
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RE: B-29 SUPERFORTRESS BUILD THREAD - 9/10/2008 5:40:26 AM   
ramcfarland



Posts: 3236
Joined: 11/4/2002
From: Waldorf , MD, USA
Status: offline 		Awsome as some say there ram-bro!!!!


War Bird Man can you go into the strip planking process for us???

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Fast Richard

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RE: B-29 SUPERFORTRESS BUILD THREAD - 9/10/2008 6:01:54 AM   
Ram-bro


 

Posts: 2078
Joined: 1/22/2002
From: Bennington, NE, USA
Status: offline 		thanks ram, it was a group build.greaat building experience. Definietly synergystic

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RE: B-29 SUPERFORTRESS BUILD THREAD - 9/10/2008 2:19:39 PM   
Gringo Flyer



Posts: 2249
Joined: 1/16/2004
From: Formosa, ARGENTINA
Status: offline
quote:

ORIGINAL: Nickrc3

GringoFlyer,
I don't believe your question on sanding rounded surfaces (like a fuselage or nacelle) was thoroughly answered. Its called the 'shoe-shine' method.
Being a military Veteran, I've become quite skilled at it. I also just finished using this technique on the nacelles of my Don Smith B-17 and many other warbirds.

Cut various grits of sandpaper sheets lengthwise in 1", 1.5" and 2" strips. You should work with 10"-12" lengths. Initially start with a course grit, say 80-120 to develop the shape. Gripping each end of the paper, work in a smooth back and forth stroke, placing as much sandpaper surface onto the sanding surface. Also use a diagonal stroke, again, uniform back and forth motions. Finish up with 220 grit which will be plenty smooth when using a fiberglass cloth/resin finish. Step up to 360 with cloth coverings.

Another tip... if you have access to an automotive paint supply house, buy the ready-cut sheets of 3M sandpaper. Their usually 2" wide x 18" in length and come in all grits and used for the flat, manual sanding tools.

On really large surface (large this B-29) buy 3"- 4" sanding belts and simply cut them up in 12" lenghts.

NICK

Thanks Nick, that is a big help, I will try it


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RE: B-29 SUPERFORTRESS BUILD THREAD - 9/11/2008 1:32:25 AM   
Warbird Man



Posts: 267
Joined: 9/3/2004
From: Hortonville, WI, USA
Status: online 		Gringo Flyer,
Nickrc3 was right. I didn't thoroughly answer your question. My appologies. Nick explains a good method. If you still have trouble trying to eliminate a stubborn seam, you might need to grind the seam down alittle bit and fill it back in with basla filler or equivalent and lightly blend/sand it back in.


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Warbird Man

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RE: B-29 SUPERFORTRESS BUILD THREAD - 9/13/2008 3:31:40 PM   
Warbird Man



Posts: 267
Joined: 9/3/2004
From: Hortonville, WI, USA
Status: online 		With the right side of the fuse finally framed up, it's now ready to be sheeted. For those interested in the sheeting process, I'll post some more detailed pics as I go along.

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Warbird Man

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RE: B-29 SUPERFORTRESS BUILD THREAD - 9/13/2008 5:09:02 PM   
Props4ever


 

Posts: 1745
Joined: 8/3/2005
From: Canada, ON, CANADA
Status: online 		Warbird Man,


You got excellent build going there, now i'm thinking making built up plane is faster the foamcore route, you did so much in such a short time!, i'm impressed with your abilities...Yes i like to see how you sheet the whole aft fuselage as it tapers into cone shape...

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RE: B-29 SUPERFORTRESS BUILD THREAD - 9/16/2008 2:39:04 AM   
Warbird Man



Posts: 267
Joined: 9/3/2004
From: Hortonville, WI, USA
Status: online 		Thanks Props4ever,

The fuse is done in staggered sections with 1/8" sheeting. In the mid section where all the formers are the same diameter I can get away with 3" wide sheeting, then I step down to 1" strips, then I have to rip the strips down to 1/2" as I get toward the tail end. 1/8th is used on the fuse because of the lack of stringers but doesn't bend as well as 3/32" . There are many ways one can sheet a tapered fuse. I generally start out with a full strip then run a few tapered strips and so on. I also add alittle bevel on the edges to get the strips to fit better.

A good supply of assorted clamps, pins, weights and tape are a must.

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< Message edited by Warbird Man -- 9/18/2008 2:36:42 AM >

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Warbird Man

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RE: B-29 SUPERFORTRESS BUILD THREAD - 9/20/2008 2:16:40 PM   
mkharv3



Posts: 193
Joined: 1/6/2004
From: San Antonio, TX, USA
Status: offline 		Damn that is a lot of wood. One of these days I will graduate from building these 40 size planes and move up to that. That is going to be one hell of a plane. Stay motivated I am sure a lot of people are enjoying your posts.

Thanks

Mark

By the way do you know anyone who has built a C-130. Not of plastic but all wood and gas motors?

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       Post #: 58

RE: B-29 SUPERFORTRESS BUILD THREAD - 9/20/2008 2:51:59 PM   
Warbird Man



Posts: 267
Joined: 9/3/2004
From: Hortonville, WI, USA
Status: online 		Thankyou Mark.

I've got the motivation but it's very time consuming building a project like this. It goes in spurts (alittle here, alitttle there)

I don't know of anyone personally that has built a C-130 but I know Palmer Plans has 3 sizes of this plane. PCK now handles Palmer plans designs.

(So far I only used about an 1/8th of the wood out of the 2 boxes)

< Message edited by Warbird Man -- 9/20/2008 4:59:24 PM >

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RE: B-29 SUPERFORTRESS BUILD THREAD - 9/20/2008 2:54:31 PM   
ramcfarland



Posts: 3236
Joined: 11/4/2002
From: Waldorf , MD, USA
Status: offline 		Very nice indeed

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Fast Richard

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RE: B-29 SUPERFORTRESS BUILD THREAD - 9/21/2008 2:06:21 AM   
Warbird Man



Posts: 267
Joined: 9/3/2004
From: Hortonville, WI, USA
Status: online 		I finally have enough of the fuse sheeted that I can now unscrew the braces that held it all straight.

I don't feel the design of the formers up front that hold the nose gear retract rails were strong enough as there is not much there to mount to. I made up some doublers to stiffen them up and I'll box them in. The last thing I need is to have a hard bounce or catch a gopher hole and end up ripping it out of the nose.

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< Message edited by Warbird Man -- 9/21/2008 2:10:06 AM >

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Warbird Man

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RE: B-29 SUPERFORTRESS BUILD THREAD - 10/11/2008 1:52:52 AM   
Warbird Man



Posts: 267
Joined: 9/3/2004
From: Hortonville, WI, USA
Status: online 		I took a break from sanding on the fuse for awhile and started working on the horizontal stab and rudder. B-29s like most warbirds of the era had fabric covered flight control surfaces. The model design has them sheeted for extra strength. I'll cover those parts with a fabric covering later. A B-29s rudder doesn't hinge at its leading edge as most aircraft do. It pivots on a shaft alittle more than a 1/4 the distance back from the rudders leading edge. In order to do this I made some brackets out of 1/8" aluminum bar stock that will be attached to the stab and a 1/8" rod that will go through the top and bottom of the rudder. It will function just like a full scale rudder.

For years Iv'e been saving those extra axle bushings you get from robart wheels. They worked out perfect for bushings in the brackets I made for the rudder shaft.

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< Message edited by Warbird Man -- 10/11/2008 2:09:23 AM >

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Warbird Man

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RE: B-29 SUPERFORTRESS BUILD THREAD - 11/20/2008 5:51:13 AM   
mkharv3



Posts: 193
Joined: 1/6/2004
From: San Antonio, TX, USA
Status: offline 		Warbird Man,

Any updates on your progress? I am sure there are some folks that would love to see where you are at with your build.

Thanks.

Mark

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