The Ford Barn

MrWzrd · 11-18-2013, 12:49 AM

Is there a purpose for the bump on the top of the kingpin?

Joe K · 11-18-2013, 12:51 AM

I think it allowed the body of the kingpin to be machined between centers in a lathe? The dimple/recess in the bump is frequently filled with paint.

Joe K

dave in australia · 11-18-2013, 01:43 AM

Joe has it, the dimple at the top was for machining the shaft central. It would be placed between a live centre on the tail stock and a dead centre in the spindle and be driven by a dog. This would ensure the core for the brake pin was in the centre of the kingpin after the shaft was machined, and makes it quick and easy to accurately install in the lathe.

MrWzrd · 11-18-2013, 09:10 AM

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Sure, that makes sense. I hadn't thought about the manufacturing process.... just the end part.

Thanks.

11-18-2013, 12:49 AM	#1
MrWzrd BANNED Join Date: Oct 2013 Posts: 158	kingpin bump Is there a purpose for the bump on the top of the kingpin?

11-18-2013, 12:51 AM	#2
Joe K Senior Member Join Date: Jul 2010 Location: Cow Hampshire Posts: 4,188	Re: kingpin bump I think it allowed the body of the kingpin to be machined between centers in a lathe? The dimple/recess in the bump is frequently filled with paint. Joe K __________________ Shudda kept the horse.

11-18-2013, 01:43 AM	#3
dave in australia Senior Member Join Date: May 2010 Location: Victoria, Australia Posts: 1,176	Re: kingpin bump Joe has it, the dimple at the top was for machining the shaft central. It would be placed between a live centre on the tail stock and a dead centre in the spindle and be driven by a dog. This would ensure the core for the brake pin was in the centre of the kingpin after the shaft was machined, and makes it quick and easy to accurately install in the lathe.

11-18-2013, 09:10 AM	#4
MrWzrd BANNED Join Date: Oct 2013 Posts: 158	Re: kingpin bump Sponsored Links (Register now to hide all advertisements) Sure, that makes sense. I hadn't thought about the manufacturing process.... just the end part. Thanks.