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 Post subject: Bullfrogs and Crossovers
PostPosted: Tue Dec 15, 2009 10:59 pm 
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Joined: Thu Aug 14, 2008 4:11 pm
Posts: 14
G'evening folks,

How's a fellow to go about handling a crossover using Bullfrogs? One machine, two machines, mounting, etc?

Respectfully,

John


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PostPosted: Sun Apr 25, 2010 10:22 pm 
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Joined: Thu Mar 25, 2010 9:35 pm
Posts: 6
I know this is a old thread but this application will be my first experience with the Bullfrog. The main concern I have is the length of the double Z bend connector. The control rod needs to make a 180 degree turn in less than twelve inches of depth(from center of module to side) and not cause so much binding to cause the user to use extra force. This crossover is for two #10 turnouts on a freemoN module.

Can the double Z bend connector be shortened allowing for a less stressful/sharp curve?
Can one build a control rod mount on both sides or is the tadpole required on one side?
Otherwise I am afraid I may need to incorporate a pivoting control rod with the knob connected in the center via a lever and a lever on each end of the rod connected to the Bulfrogs.
I am probably worried about nothing and over thinking this, but I have always used Tortoise.
Any thoughts?


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PostPosted: Tue May 25, 2010 3:13 pm 
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Joined: Fri May 07, 2004 11:22 pm
Posts: 311
Location: Port Dover, Ontario
Hi,

The easiest way mechanically to operate a crossover is to use two separate BullFrogs. I believe it would be possible to do this with one machine, but have not tried it, and for what the machines cost, it might not be worth the effort. However, operationally, it is nice to only have one control to operate a crossover.

Typically, on FreeMo modules, the turnouts are parallel with the edge of the layout and can usually be easily hooked up with a short length of control rod using the double ended Z bend.

On the module you are working on, is the crossover perpendicular to the edge of the module?

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Cheers!

Tim Warris
Fast Tracks
http://www.fast-tracks.net
service@fast-tracks.net


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PostPosted: Wed May 26, 2010 7:20 pm 
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Joined: Thu Aug 14, 2008 4:11 pm
Posts: 14
On the module in mind, the crossover(s) would essentially be parallel to the long edge (i.e. side, not ends). No addition contortions will needed to alter the direction of force of any controls.


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