RE: Looking for Corsair tail wheel build    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 Warbirds and Warplanes >> RE: Looking for Corsair tail wheel build
Page: <<   < prev  1 2 3 4 5 6 [7]

Tower Hobbies Get Coupon Codes Brands  
Login
Message << Older Topic   Newer Topic >>
RE: Looking for Corsair tail wheel build - 9/11/2011 10:49 AM   
nzphil


 

Posts: 23
Score: 100
Joined: 9/15/2007
Last Login: 5/4/2013
From: nelson, NEW ZEALAND
Status: offline 		Hi Guys,
Now with a working canopy frame, thanks Sean I spent a little while thinking how to hide switches/air connections to keep the Corsair more scale like.
Somewhere in a forum somebody showed how they fitted the main switch to an aerial stub. As I wanted to have an aerial but removable to save damage in taking it in & out of the car I decided I could achieve both wirth a bit of thought.
First I made a layup over the outside of the fuse roughly where the aerial would be.
I then cut a bit of previously made flat to fit to house the switch & drilled & tapped the switch arm 2mm
That was the easy bit.
I then got two brass tubes, that fitted inside each other, & cut off about 3 inches. Putting them together but with about 1/2" of the inner one proud of the other I 'shaped' them using a vice to roughly like the steamline tube section.
A little adjustment with fine wet & dry on the inner gave a good fit that didn't need much force for it to slide out of the outer. I cut a 1mm wide band off the outer to use as the stop when the aerial was in far enough.
Once the length was worked out Iput both tubes together & with a piece of flat Ali on the narrowist part of the tube made an indent with a blunted nail about 1/8th from where the aerial tube stopped. This transferred to the inner & although you can still pull them apart there is a nice 'click' when the stop point is reached.
The aerial was made from hard balsa & fitted on the aerial tube before the bottom of the aerial balsa is pocketed to house the switch activating rod.
I think the following pictures might explain it better



Attachments
Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize
Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize


Hide Signatures

(in reply to p51tom)
       Post #: 151

RE: Looking for Corsair tail wheel build - 10/12/2011 12:57 AM   
Brad-C


 

Posts: 37
Score: 100
Joined: 12/22/2006
Last Login: 1/7/2013
From: Folsom, CA, USA
Status: offline 		Hi,

I know this thread dates back a few years and has been idle for a little while but I just wanted to say thanks to everyone who posted information on this tail wheel design. Very impressive and scale looking, and the fabrication method is very creative. I would never have come up with this on my own so this thread has been extremely helpful.

I'm planning on doing the new ARF version of the TF 60 Corsair when it comes out and one of the upgrades is going to be this tail wheel. I'm fortunate enough to have a 3D printer at work so I've modified the design a bit and have built the first one to play around with. I'll have to modify this a bit to fit the plane I'm sure but this first one is based on the latest version from this post. Works great so far and I'm pretty confident it will be strong enough. This plastic has very similar properties to ABS and I've reinforced it in a few places with cf rod inside. When I finalize the design I'll CNC the linkage arms out of FR4 for strength but for now the printed material works ok. I'll be painting it too of course. Here's a few pics of it.




Attachments
Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize
Click to see fullsize image.
Click for fullsize


Hide Signatures

(in reply to nzphil)
       Post #: 152

RE: Looking for Corsair tail wheel build - 10/12/2011 1:05 AM   
Chad Veich



Posts: 6154
Score: 265
Joined: 12/13/2001
Last Login: 5/26/2013
From: Litchfield Park, AZ, USA
Status: offline
quote:

ORIGINAL: Brad-C
Hi,

I know this thread dates back a few years and has been idle for a little while but I just wanted to say thanks to everyone who posted information on this tail wheel design. Very impressive and scale looking, and the fabrication method is very creative. I would never have come up with this on my own so this thread has been extremely helpful.

I'm planning on doing the new ARF version of the TF 60 Corsair when it comes out and one of the upgrades is going to be this tail wheel. I'm fortunate enough to have a 3D printer at work so I've modified the design a bit and have built the first one to play around with. I'll have to modify this a bit to fit the plane I'm sure but this first one is based on the latest version from this post. Works great so far and I'm pretty confident it will be strong enough. This plastic has very similar properties to ABS and I've reinforced it in a few places with cf rod inside. When I finalize the design I'll CNC the linkage arms out of FR4 for strength but for now the printed material works ok. I'll be painting it too of course. Here's a few pics of it.


Beautiful work Brad. Be sure to let us know how it holds up in actual operation. Aren't 3d printers great?!!!!


Hide Signatures

(in reply to Brad-C)
       Post #: 153

RE: Looking for Corsair tail wheel build - 10/12/2011 1:07 AM   
chilie


 

Posts: 81
Score: 110
Joined: 1/11/2007
Last Login: 11/29/2012
From: , CA, USA
Status: offline 		That looks pretty friggin sweet if you ask me.

I bet there would be more than one person who'd be interested in buying one from you if that material is strong enough.  I know I would consider it if the price was right.

Since you've obviously cleaned up the geometry, can you export out that whole part into individual parts that be cut out by other people?  I know some of the advanced 3d modeling programs out there can make a 2D "cut layout" for indiviual parts.


_____________________________

http://www.guliziagraphics.com

Hide Signatures

(in reply to Brad-C)
       Post #: 154

RE: Looking for Corsair tail wheel build - 10/12/2011 4:10 AM   
Brad-C


 

Posts: 37
Score: 100
Joined: 12/22/2006
Last Login: 1/7/2013
From: Folsom, CA, USA
Status: offline 		Hi,

Thanks for the comments. Yep, I'll share everything on this. When I get to work tomorrow I'll post up the 3D CAD file along with a link to a free viewer. You can take measurements from it and see each part. As for 2D drawings I can certainly do that but some of the parts won't be right by themselves. I started by taking the PDF posted earlier in this thread and converted it to DXF. I then made the 3D parts from that and assembled it similar to how everyone was doing it by soldering the cut parts. Then I added new parts as an interference fit in the 3D model and then cut away overlapping sections where needed. I'm sure I can come up with something that would help though. Any particular format you would like it?

As for making these to sell, it would be a conflict of interest for me to sell them for profit since my company owns the printer. It would actually cost a few hundred at a prototype shop to do this but it probably costs less than $25 bucks in raw material. I can use the printer for personal stuff though so what I can do is make some parts and charge only for the parts I make on my home CNC. So that's basically a "cover my arse" way of saying that I can make a few of these for those interested. A lot of the parts were ordered from McMaster Carr too so those I can just list out.

Hide Signatures

(in reply to chilie)
       Post #: 155

RE: Looking for Corsair tail wheel build - 10/12/2011 12:46 PM   
smkrcflyer



Posts: 539
Score: 105
Joined: 9/27/2006
Last Login: 5/25/2013
From: Hamburg, PA, USA
Status: offline 		Wow very nice. I work for an electronics component company and I do CAD design in both 2d and 3d. I have the large TF Corsair kit to build next. I wonder if this could be scaled up for that plane.

_____________________________

Steve
Club Saito #638, Ultra Sport BH #67, Cub BH #71, Fleet BH #21, Spitfire BH #165

Hide Signatures

(in reply to Brad-C)
       Post #: 156

RE: Looking for Corsair tail wheel build - 10/12/2011 2:59 PM   
dionysusbacchus



Posts: 1902
Score: 120
Joined: 12/12/2002
Last Login: 5/26/2013
From: McQueeney, TX, USA
Status: offline 		Looks very nice! Don't forget the tail hook, for some reason most leave that off and it is very simple. Just make the tail hook out of aluminum tube and shape a balsa hook.

I would think without having a chance to actually hold the tail wheel that it will hold up for a smaller and lighter .60 size Corsair. But I doubt it would be strong enough for anything bigger.

What is the weight of your plastic tail wheel? That would be the real benefit if it is significantly lighter than my originals, I can build one out of PC board right around 2 oz. Also not to mention the benefit for those that find it difficult to work with PC board.


Luke


quote:

ORIGINAL: Brad-C

Hi,

I know this thread dates back a few years and has been idle for a little while but I just wanted to say thanks to everyone who posted information on this tail wheel design. Very impressive and scale looking, and the fabrication method is very creative. I would never have come up with this on my own so this thread has been extremely helpful.

I'm planning on doing the new ARF version of the TF 60 Corsair when it comes out and one of the upgrades is going to be this tail wheel. I'm fortunate enough to have a 3D printer at work so I've modified the design a bit and have built the first one to play around with. I'll have to modify this a bit to fit the plane I'm sure but this first one is based on the latest version from this post. Works great so far and I'm pretty confident it will be strong enough. This plastic has very similar properties to ABS and I've reinforced it in a few places with cf rod inside. When I finalize the design I'll CNC the linkage arms out of FR4 for strength but for now the printed material works ok. I'll be painting it too of course. Here's a few pics of it.






Hide Signatures

(in reply to Brad-C)
       Post #: 157

RE: Looking for Corsair tail wheel build - 10/12/2011 4:25 PM   
Brad-C


 

Posts: 37
Score: 100
Joined: 12/22/2006
Last Login: 1/7/2013
From: Folsom, CA, USA
Status: offline
quote:

ORIGINAL: smkrcflyer

Wow very nice. I work for an electronics component company and I do CAD design in both 2d and 3d. I have the large TF Corsair kit to build next. I wonder if this could be scaled up for that plane.


It can be scaled up. The 3D printer I use can scale by percentages but the problem with that is the geometry made for off the shelf parts will be scaled up too and wouldn't necessarily fit right. It has some nylon bushings at the joints. It really would need to be done with the CAD model to keep the clearances right. What CAD package do you use? This was done in SolidWorks and I'd be happy to share the full model if you want it.

Hide Signatures

(in reply to smkrcflyer)
       Post #: 158

RE: Looking for Corsair tail wheel build - 10/12/2011 4:39 PM   
Brad-C


 

Posts: 37
Score: 100
Joined: 12/22/2006
Last Login: 1/7/2013
From: Folsom, CA, USA
Status: offline 		Hi Luke,

I didn't want the tail hook on it but yes it could be done easily. Agreed on the strength concern for larger planes. This stuff is fairly strong so with some extra thought and reinforcing here and there it could maybe work. I've been doing some high tech validation work by slamming the one I have down on the table pretty hard and so far it's fine. The cool thing about the 3D printer is that you can make geometry that you could never do on injected molded plastic or casting. It can do multiple hollowed out sections to take carbon fiber rod for reinforcement like I did on the lower i-beam struts and on the shock piston. It's probably close to par with yours on the weight - maybe a little lighter but not much. The weight as shown in the pictures is 2.1 oz but the rubber on the tail wheel is pretty dense and heavy as rear wheels go so that's part of it. I'll probably change the wheel out for the final version, it was just one I had laying around.


quote:

ORIGINAL: dionysusbacchus

Looks very nice! Don't forget the tail hook, for some reason most leave that off and it is very simple. Just make the tail hook out of aluminum tube and shape a balsa hook.

I would think without having a chance to actually hold the tail wheel that it will hold up for a smaller and lighter .60 size Corsair. But I doubt it would be strong enough for anything bigger.

What is the weight of your plastic tail wheel? That would be the real benefit if it is significantly lighter than my originals, I can build one out of PC board right around 2 oz. Also not to mention the benefit for those that find it difficult to work with PC board.


Luke



Hide Signatures

(in reply to dionysusbacchus)
       Post #: 159

RE: Looking for Corsair tail wheel build - 10/12/2011 4:53 PM   
Brad-C


 

Posts: 37
Score: 100
Joined: 12/22/2006
Last Login: 1/7/2013
From: Folsom, CA, USA
Status: offline 		I guess the forum tool here won't let me upload the CAD file as it doesn't recognize the file type. If anyone is interested let me know and I can email a version of the 3D CAD model that you can view with a free viewer. You can download the eDrawings viewer here: http://www.edrawingsviewer.com/ - make sure to pick the right version, there are both 32 and 64 bit. You can take measurements and view each part by itself but you can't actuate the linkage unfortunately.

Hide Signatures

(in reply to Brad-C)
       Post #: 160

RE: Looking for Corsair tail wheel build - 10/13/2011 5:46 AM   
Scale Specialties


 

Posts: 74
Score: 100
Joined: 9/1/2006
Last Login: 5/20/2013
From: Beaverton, OR, USA
Status: offline 		Brad,
Is that an Objet part by chance or SLA?

Hide Signatures

(in reply to Brad-C)
       Post #: 161

RE: Looking for Corsair tail wheel build - 10/13/2011 4:54 PM   
Brad-C


 

Posts: 37
Score: 100
Joined: 12/22/2006
Last Login: 1/7/2013
From: Folsom, CA, USA
Status: offline
quote:

ORIGINAL: Scale Specialties

Brad,
Is that an Objet part by chance or SLA?



The machine is a 3D Systems HD3000 Plus http://printin3d.com/3d-printers/projet-hd-3000-3d-professional-3d-printer . It's a heated plastic resin that's cured by UV light. It lays down the resin layer by layer and fills gaps and overhangs with a wax material. When it's done you melt away the wax in an oven. I'm not too familiar with Objet but this is a lot stronger than SLA and doesn't require any post process sanding or other finishing to make smooth curved surfaces. It can do down to 0.0006" thick per layer so you don't get the stepped surfaces like some SLA and FDM type machines.

Hide Signatures

(in reply to Scale Specialties)
       Post #: 162

RE: Looking for Corsair tail wheel build - 12/30/2011 11:12 PM   
Firepower R/C


 

Posts: 539
Score: 110
Joined: 11/2/2004
Last Login: 5/16/2013
From: Bloomington, IL, USA
Status: offline 		I had an FDM machine from Dimension Engineering and I really liked it, but these parts look oh so much better! I hated sanding my parts, but it sure did make some cool stuff. Congrats on your tailwheel! I would love to have one, having just bought the Top Flite ARF.

Very jealous!!

_____________________________

Firepower R/C
Saving un-loved R/C airplanes around the world

Hide Signatures

(in reply to Brad-C)
       Post #: 163

RE: Looking for Corsair tail wheel build - 1/16/2012 6:57 PM   
Jafa


 

Posts: 3
Score: 100
Joined: 4/25/2011
Last Login: 5/11/2013
From: Portland, OR, USA
Status: offline 		I could use some help with Luke's tail wheel....  I have cut and shaped the parts but they seem large to me to fit on the Top Flite 60 size Corsair.  Does his plan need to be reduced for the 1/8th scale?  I noticed earily in this threat that Luke shows the building of a 1/6th scale wheel.  Can someone tell me how large the parts should be?  Printing off his plan brought part "B" to almost 4" and when building his wheel to 1/6th scale he said to enlarge it to 4 5/8".  How long some the tubing be for the tail hook and for the other brass tubings?  Thanks, Todd

Hide Signatures

(in reply to Firepower R/C)
       Post #: 164

Page:   <<   < prev  1 2 3 4 5 6 [7]
All Forums >> RC Airplanes >> RC Warbirds and Warplanes >> RE: Looking for Corsair tail wheel build
Page: <<   < prev  1 2 3 4 5 6 [7]





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


0.860RCU1