6-9224 operating horse car | O Gauge Railroading On Line Forum

Pat KOGR Forum Member SUPPORTING MEMBERDIGITAL SUBSCRIBER

I found a complete 9224 horse car and unloading corral at a garage sale. It might have been used once; the set is complete with the instructions. There is an OTC contractor with a funny looking hairpin, maybe it is brass colored. In figure 3 of the instructions, it says to push on the hairpin. I do not understand what this does and am clueless as to what the OTC means, or what it’s function is, or how the hairpin actually pushes on the contacts. Any advice will be appreciated. This is a piece made in Mt Clemens Mich.

2/6/218:33 PM

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Pat KOGR Forum Member SUPPORTING MEMBERDIGITAL SUBSCRIBER

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2/6/218:36 PM

Windy CityOGR Forum Member

OTC (operating track connector) is a lockon used for tubular track to activate the car. It makes contact with the coupler shoe and completes the ground connection. The brass bar is for O track (vs 027 track) which is slightly higher.

2/6/218:44 PM

KOOLjock1OGR Forum Member SUPPORTING MEMBERDIGITAL SUBSCRIBER

Best practice is to run the OTC from a variable dedicated voltage source separate from the corral, as the car and corral operate best at slightly different voltages.

Great find! I just ran mine tonight!

Jon

Pat KOGR Forum Member SUPPORTING MEMBERDIGITAL SUBSCRIBER

First of all thank you all for the help. So that means track power?

or on my ZW to connect to C-U or D-U posts and find its sweet spot?

and would I be able to run the barrel car, log unloader, milk cars if I get the shoe on the OTC.

and yes I am using O Gauge track

Tony HOGR Forum Member SUPPORTING MEMBERDIGITAL SUBSCRIBER

Yes, mine run best at different voltages as well. One toggle switch to turn both on, but i use diodes to reduce the voltage to the corral.

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