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PostPosted: Sat Oct 29, 2011 6:27 am 
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Joined: Tue Jul 07, 2009 5:29 pm
Posts: 24
How do you set up your bullfrog throw rods to always be in the "in" position when you want your turnout to be lined for normal or straight route? I have seen this on a few layouts and have even read in the model press that it is a standard we should adopt when using throw rods or cables. Any suggestions on how to do this for every turnout, left or right handed?

Thomas


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PostPosted: Sat Oct 29, 2011 9:02 am 
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Joined: Sat Aug 13, 2005 10:48 am
Posts: 365
Location: East Texas - USA
Thomas,
You only need to construct a simple mechanical crank to 'reverse' the apparent position. Do it in the cabling before attaching to the Bullfrog.
-ed-

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-ed mccamey-
COSLAR RR - http://www.coslar.us/
NMRA Standards and Conformance Department
PROTO & FINE Scale Coordinator
I estimate I have about 5 pounds of coupler springs somewhere in the vicinity of my workbench.


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PostPosted: Tue Nov 22, 2011 9:15 pm 
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Joined: Sun Nov 14, 2010 10:33 pm
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Ed,

could you elaborate on this mechanical crank?

Thanks!
Jon


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PostPosted: Tue Nov 22, 2011 11:19 pm 
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Joined: Sat Aug 13, 2005 10:48 am
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Location: East Texas - USA
Jon,

Think a teeter totter. Bar with center pivot. When you pull on one side - the other side pushes and vice verse.

Set it up between the handle and the Bullfrog - you get opposite reaction. You can also vary the positioning fastening from the center pivot to have differing throw length desired.

(!empty($user->lang['ATTACHMENT'])) ? $user->lang['ATTACHMENT'] : ucwords(strtolower(str_replace('_', ' ', 'ATTACHMENT'))):
lever_and_crank(s).jpg
lever_and_crank(s).jpg [ 16.3 KiB | Viewed 6870 times ]


-ed-

_________________
-ed mccamey-
COSLAR RR - http://www.coslar.us/
NMRA Standards and Conformance Department
PROTO & FINE Scale Coordinator
I estimate I have about 5 pounds of coupler springs somewhere in the vicinity of my workbench.


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PostPosted: Sat Mar 24, 2012 12:10 pm 
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Joined: Tue Mar 15, 2011 5:24 pm
Posts: 6
Location: Bracebridge, ON, Canada
That's a good idea! My thinking is to turn the Bullfrog 180 degrees (so that it is facing away from the fascia) and then use a Tadpole to hold the control rod. Does that sound reasonable?


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