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1948 - 1956 F1, F100 & Larger F-Series Trucks Discuss the Fat Fendered and Classic Ford Trucks

What is this ?

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Old Jan 14, 2013 | 08:22 PM
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What is this ?

Can anybody tell me what this is and what it is called? It is mounted to the dash of my 1956 f6
 
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Old Jan 14, 2013 | 08:34 PM
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The large clock and speedo together is called a tach-o-graph, the valve is for trailer brakes and the red button is the control for the 2 speed rear axle.
 
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Old Jan 14, 2013 | 08:43 PM
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Originally Posted by mechmagcn
The large clock and speedo together is called a tach-o-graph, the valve is for trailer brakes and the red button is the control for the 2 speed rear axle.
Can the tach-o-graph have a paper feed out?
The valve works my brakes on the back axle
Thanks for the help!
 
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Old Jan 14, 2013 | 08:58 PM
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Originally Posted by Chris 56 f6
Can the tach-o-graph have a paper feed out?
Has been a while since I last looked at one, but I think they had some sort of paper disc that printed the speed and time over the trip.
 
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Old Jan 14, 2013 | 10:45 PM
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Back brake control? I definitely see some stunt driving or "drifting" possibilities!
 
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Old Jan 14, 2013 | 11:59 PM
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Originally Posted by mechmagcn
Has been a while since I last looked at one, but I think they had some sort of paper disc that printed the speed and time over the trip.
We had tachometer cards on our tractors (truck) in the late 60's that resembled that. The corporation wanted to see the speed and rpm after every run. I quess they wanted to know what was so hard on the running gear.

Rpm and speed was recorded on a circle graph.
 
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Old Jan 15, 2013 | 12:08 AM
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Originally Posted by The Horvaths
Back brake control? I definitely see some stunt driving or "drifting" possibilities!
Me likes the way you see it! My thoughts exactly!
 
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Old Jan 15, 2013 | 07:32 AM
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We also used them in the fleet I worked on . The boys did'nt like them much.
 
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Old Jan 15, 2013 | 08:01 AM
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From: Cary Il
So it is like a old school black box?
 
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Old Jan 15, 2013 | 08:03 AM
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Most of them had a piece of plastic over the speedometerso if you didn't want the speedometer to show over say 60 mph you could take a straight pin and a Bic lighter, heat the pin and stick it right through the plastic, never over 60 but don't forget to take the pin out at the end of your trip.
 
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Old Jan 15, 2013 | 05:28 PM
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Can I pull it out and use the stock speedometer ? Can I put a air lever of some kind on the shifter for the back brakes?
 
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