Technical Spindle identification

I need help identifying this spindle. It's on my '51 Ford F1 and I am converting to disc. The spindle has an inner diameter of 1.251 instead of the stock 1.131. brakes.

 

Looks like a Stock Spindle

 

That appears to be the driver's side F-1 spindle.

 

Yuppers. I don't have any photos of the F-1 ch***is I had on this computer but this link shows a very similar spindle with the big hole for the steering arm. F1 Spindles - Ford Truck Enthusiasts Forums (ford-trucks.com)

 

Speedway Motors' website has spindle id pictures with measurements.

 

Speedway and the others don't show F-1 or F-100 spindles. His is a stock F-1 drivers side spindle.

 

1.1325 (reasonably 1.31, depending on the accuracy of the measuring tool) is the inner bearing inner diameter of the first-generation of the F-100 (1953-1956).

Those look like this:

 

The bump on the steering arm next to the tie rod end hole might be a steering stop. I am not sure. It may have been ground off on yours, as yours is otherwise modified.

Either that, or your setup has the F-1 steering arm.

In any case, I am pretty sure these are F-100 spindles, and you would need a disc brake kit for those.

 

Take a look at these pictures from Nostalgia Sid:

This is an F1 axle:

Straight across horizontally in the middle. Shock eyelets. This is your axle.

This is an F100 axle:

Pan clearance dip in the middle. No shock eyelets.

While the axles are different, they have the same kingpin boss height. The kingpin bore is bigger, by 0.0465" at 0.859" (versus 0.8125"), but that could have easily been reamed out.

 

Thanks! You guys are the greatest!!
After 75 years, one would think that I would know better than to work on someone else's project.
You just never know what they had to drink, or smoke, before they came up with their bright ideas.
Thanks again

 

Happy to help!