CHURCHILL BRIDGELAYER    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 Cars, Buggies, Trucks, Tanks and more >> RC Tanks >> CHURCHILL BRIDGELAYER
Page: [1] 2   next >   >>  

Tower Hobbies Get Coupon Codes Brands  
Login
Message << Older Topic   Newer Topic >>
CHURCHILL BRIDGELAYER - 9/5/2012 9:40 PM   
flamme


 

Posts: 164
Score: 110
Joined: 9/7/2008
Last Login: 5/25/2013
From: paris, FRANCE
Status: offline 		I need your help. I'm trying to realize a churchill bridgelayer...but i've got a problem. When I make the kinematic of the system, i found that the bridge system works in two parts. To make the elevation I need to pull since the bridge is straight and to push to put it down. Hope you understand. I try to put photo to explain it











Hide Signatures
       Post #: 1

RE: CHURCHILL BRIDGELAYER - 9/5/2012 9:49 PM   
yellowshaker



Posts: 3918
Score: 183
Joined: 10/29/2009
Last Login: 5/25/2013
From: bayonne, NJ, USA
Status: offline 		Someone on the rc tank regiment built a working model some time ago...I think it was Septon. perhaps search there for some info on how hhe made it?

_____________________________

Armorcreations.weebly.com

Hide Signatures

(in reply to flamme)
       Post #: 2

RE: CHURCHILL BRIDGELAYER - 9/6/2012 7:43 AM   
CCC2012


 

Posts: 208
Score: 100
Joined: 1/15/2012
Last Login: 4/9/2013
From: , TX, USA
Status: offline 		VERY NICE.....

_____________________________

TAMIYA LEOPARD 2A6~WIP

Hide Signatures

(in reply to yellowshaker)
       Post #: 3

RE: CHURCHILL BRIDGELAYER - 9/6/2012 9:09 AM   
Elefant



Posts: 159
Score: 100
Joined: 9/1/2008
Last Login: 5/25/2013
From: Courbevoie, FRANCE
Status: offline 		Hi,

I spoke with my friend Flamme on the phone and we came to the conclusion that we do not have all the elements to well understand the cinematic of this system.
First, the piston course does not seem long enough to extend the bridge from the stored position to the laid down position. This point taken into account, it seems obvious the deployment of the bridge is done in two steps :
- the bridge arm, in stored position on the tank, is PULLED by the piston rod until the the vertical position (90° angle). Then the rotating pivot that allowed this movement is unblocked to let the bridge arm go to the laid down position (180° angle), the rotating pivot being now the wheels axle. For this last step, the wheel structure must be temporary attached to the front of the tank and this time, the piston PUSHES the bridge arm.

What do you think of this theory based only on the study of the resin model seen above...?

Hide Signatures

(in reply to CCC2012)
       Post #: 4

RE: CHURCHILL BRIDGELAYER - 9/6/2012 12:24 PM   
borealis



Posts: 1180
Score: 103
Joined: 1/11/2007
Last Login: 5/20/2013
From: San Paolo Solbrito, ITALY
Status: offline 		I think your deduction is correct: pull until the wheels touch the ground (better, until the triangular support structure touches the front hull), then stop, unlock the pins and then it's just a matter of controlled release, since the bridge weight will lower the arm itself.
Since the bridge is hinged at its center of gravity, it will stay horizontal during deployment.
A well studied cinematic.

About the piston: the real piston is just the first segment from the cylinder. It pushes the central sliding link along the rail. The second segment is a fixed-lenght pushrod hinged at both ends (one in the central sliding link, the other is between the locking pins), not the piston itself.


edit: an image to better explain the above text



Hide Signatures

(in reply to flamme)
       Post #: 5

RE: CHURCHILL BRIDGELAYER - 9/6/2012 1:53 PM   
mustclime



Posts: 1206
Score: 106
Joined: 7/26/2011
Last Login: 5/24/2013
From: westwood, NJ, USA
Status: offline 		here is the churchill biuld.....he built the front mount one....

http://www.rctankregiment.com/rctankforum/viewtopic.php?f=34&t=540

_____________________________

That which does not destroy me just makes me more irritable

Hide Signatures

(in reply to borealis)
       Post #: 6

RE: CHURCHILL BRIDGELAYER - 9/6/2012 2:08 PM   
borealis



Posts: 1180
Score: 103
Joined: 1/11/2007
Last Login: 5/20/2013
From: San Paolo Solbrito, ITALY
Status: offline 		That is much simpler than Flamme's one, and definitely less interesting.

Hide Signatures

(in reply to mustclime)
       Post #: 7

RE: CHURCHILL BRIDGELAYER - 9/6/2012 3:43 PM   
Rex Ross


 

Posts: 1601
Score: 237
Joined: 2/24/2009
Last Login: 5/25/2013
From: Benicia, CA, USA
Status: offline 		I think the bridgelayer that Septon is building is very interesting. It is a different design from the one that flamme is working on, and each has it's own special operational problems to be solved, IMHO. In either case, I applaud both projects. They both require skill levels I wish I had.
Rex

_____________________________

R/C T34-76 T34-85 KV-1 T17E1/E2/E3 Bren M26 M41 LVTA-1 Hetzer Greyhound M5A1/M8 Jeep Dingo DUKW SdKfz7 Shermans Panther M3A1

Hide Signatures

(in reply to borealis)
       Post #: 8

RE: CHURCHILL BRIDGELAYER - 9/6/2012 5:38 PM   
flamme


 

Posts: 164
Score: 110
Joined: 9/7/2008
Last Login: 5/25/2013
From: paris, FRANCE
Status: offline 		Thank for your help.
So The piston rod push the main arm it stays at the center of gravity...then at the locking pin (natural movement or humain action?) the reverse side of the piston for the second side of deployement?

The locking pin works just at the finish of the movement of the triangulare stucture or it's locked by an mechanical action(or human?)
thank you

Hide Signatures

(in reply to Rex Ross)
       Post #: 9

RE: CHURCHILL BRIDGELAYER - 9/6/2012 7:25 PM   
flamme


 

Posts: 164
Score: 110
Joined: 9/7/2008
Last Login: 5/25/2013
From: paris, FRANCE
Status: offline 		If someone got the triangulare dimensions? etc....

Hide Signatures

(in reply to flamme)
       Post #: 10

RE: CHURCHILL BRIDGELAYER - 9/7/2012 7:17 AM   
borealis



Posts: 1180
Score: 103
Joined: 1/11/2007
Last Login: 5/20/2013
From: San Paolo Solbrito, ITALY
Status: offline 		Sorry I don't have any dimension.
The pins would be both hydraulically operated (for easier operation) and manual (in case of hydraulic failure etc.). I dont' think they were automatic, too much dangerous in case of mis-disapplication.
Difficult to replicate on a model, though. Maybe mini-electromagnet as pins....

Hide Signatures

(in reply to flamme)
       Post #: 11

RE: CHURCHILL BRIDGELAYER - 9/7/2012 4:56 PM   
flamme


 

Posts: 164
Score: 110
Joined: 9/7/2008
Last Login: 5/25/2013
From: paris, FRANCE
Status: offline 		I finally understand where it was locked.





Hide Signatures

(in reply to borealis)
       Post #: 12

RE: CHURCHILL BRIDGELAYER - 9/8/2012 6:33 PM   
flamme


 

Posts: 164
Score: 110
Joined: 9/7/2008
Last Login: 5/25/2013
From: paris, FRANCE
Status: offline 		My work



Hide Signatures

(in reply to flamme)
       Post #: 13

RE: CHURCHILL BRIDGELAYER - 9/10/2012 9:17 PM   
flamme


 

Posts: 164
Score: 110
Joined: 9/7/2008
Last Login: 5/25/2013
From: paris, FRANCE
Status: offline 		Fist run


http://www.youtube.com/v/6wR_L6jQVHw

Hide Signatures

(in reply to flamme)
       Post #: 14

RE: CHURCHILL BRIDGELAYER - 9/10/2012 9:25 PM   
Elefant



Posts: 159
Score: 100
Joined: 9/1/2008
Last Login: 5/25/2013
From: Courbevoie, FRANCE
Status: offline 		Incredible !!
How did you achieve the transition between the two different pivots ?

Hide Signatures

(in reply to flamme)
       Post #: 15

RE: CHURCHILL BRIDGELAYER - 9/10/2012 9:29 PM   
mustclime



Posts: 1206
Score: 106
Joined: 7/26/2011
Last Login: 5/24/2013
From: westwood, NJ, USA
Status: offline 		WOW, that is nice.

_____________________________

That which does not destroy me just makes me more irritable

Hide Signatures

(in reply to flamme)
       Post #: 16

RE: CHURCHILL BRIDGELAYER - 9/10/2012 9:56 PM   
heavyaslead



Posts: 1302
Score: 100
Joined: 11/19/2002
Last Login: 5/13/2013
From: Loganville, GA, USA
Status: offline 		You could disguise the hydraulic as a motor worm gear system for both elevation and laydown.


_____________________________

Cheers
Eric Scott

Hide Signatures

(in reply to mustclime)
       Post #: 17

RE: CHURCHILL BRIDGELAYER - 9/10/2012 10:02 PM   
flamme


 

Posts: 164
Score: 110
Joined: 9/7/2008
Last Login: 5/25/2013
From: paris, FRANCE
Status: offline 		For the moment, with one gear motor I can make the two parts. I'm going to work on the system to lock the triangulaire pivot with one servo

Hide Signatures

(in reply to heavyaslead)
       Post #: 18

RE: CHURCHILL BRIDGELAYER - 9/11/2012 12:26 PM   
flamme


 

Posts: 164
Score: 110
Joined: 9/7/2008
Last Login: 5/25/2013
From: paris, FRANCE
Status: offline 		Second test with the bridge(not finish) to look if it was able to run.

http://www.youtube.com/watch?feature=player_embedded&v=u8BMkr3BSwc

Hide Signatures

(in reply to flamme)
       Post #: 19

RE: CHURCHILL BRIDGELAYER - 9/11/2012 1:41 PM   
borealis



Posts: 1180
Score: 103
Joined: 1/11/2007
Last Login: 5/20/2013
From: San Paolo Solbrito, ITALY
Status: offline 		Where is my jaw?

Hide Signatures

(in reply to flamme)
       Post #: 20

RE: CHURCHILL BRIDGELAYER - 9/11/2012 3:03 PM   
Rex Ross


 

Posts: 1601
Score: 237
Joined: 2/24/2009
Last Login: 5/25/2013
From: Benicia, CA, USA
Status: offline 		OMG!

_____________________________

R/C T34-76 T34-85 KV-1 T17E1/E2/E3 Bren M26 M41 LVTA-1 Hetzer Greyhound M5A1/M8 Jeep Dingo DUKW SdKfz7 Shermans Panther M3A1

Hide Signatures

(in reply to flamme)
       Post #: 21

RE: CHURCHILL BRIDGELAYER - 9/11/2012 4:18 PM   
yellowshaker



Posts: 3918
Score: 183
Joined: 10/29/2009
Last Login: 5/25/2013
From: bayonne, NJ, USA
Status: offline 		WOW!!!!!!!!!!!!!!!

_____________________________

Armorcreations.weebly.com

Hide Signatures

(in reply to Rex Ross)
       Post #: 22

RE: CHURCHILL BRIDGELAYER - 9/11/2012 5:26 PM   
karel47



Posts: 2253
Score: 149
Joined: 10/21/2009
Last Login: 5/25/2013
From: ninove - outeroost vlaanderen, BELGIUM
Status: offline 		nice work of art man, it works just fine ... am curieus how it would end up

_____________________________

PanzVI-J,ShermanM4A4,PershingM26,KTPorsche2x,KTHenshel Late3x-Early1x,TigerI 3x,JP,Panther,Jagdtiger;PantherIIta;PanthHL;Stu

Hide Signatures

(in reply to yellowshaker)
       Post #: 23

RE: CHURCHILL BRIDGELAYER - 9/11/2012 8:19 PM   
Buckeye36



Posts: 1694
Score: 110
Joined: 4/4/2010
Last Login: 5/25/2013
From: Egg Harbor Township, NJ, USA
Status: online 		Incredible!

_____________________________

Tam Tiger 1, Tam Sherman M4(105), Tam Jagdpanther G1 under construction
ElMod Jagdpanther G2, ElMod KV-1E, ElMod StuG 4

Hide Signatures

(in reply to karel47)
       Post #: 24

RE: CHURCHILL BRIDGELAYER - 9/11/2012 10:19 PM   
flamme


 

Posts: 164
Score: 110
Joined: 9/7/2008
Last Login: 5/25/2013
From: paris, FRANCE
Status: offline 		An other test

http://www.youtube.com/watch?v=NsX1AtO8dKs&feature=youtu.be

Hide Signatures

(in reply to Buckeye36)
       Post #: 25



Page:   [1] 2   next >   >>  
All Forums >> RC Cars, Buggies, Trucks, Tanks and more >> RC Tanks >> CHURCHILL BRIDGELAYER
Page: [1] 2   next >   >>  




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


0.563RCU1