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Hmm.........Old Goat again.


phoenix2013
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Dollymamma takes a quick gander at 

13 hours ago, phoenix2013 said:

The old goat_________________________________

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has been pretty quiet lately since he is undertaking a significant "new adventure", but with help from Jack and Mark he has a "new challenge". So here's the start of it, let the guessing begin.

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Dollymamma takes a glance at those two images.........grins and says.........."you bunch of old geezers need some more Geritol with a splash of Crown Royal.......IT'S a Charm-Braclet-Smiley-Face-With-Mouth-Open-And_Big-Eye......IT will look OK hanging around the old goats neck but will clash with his eyeglass frames.........perhaps some 1-inch thick frames water-jetted-to-match-the-smileee-face"

Drive on.............(Henry gets some.......charm)

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20 hours ago, Sculptor said:

X2 on the sliding hitch.   Off Topic, Hi Henry, I picked up my new to me ET hitch last weekend.  I'm deciding how much, if any, extension to the frame.

Congratulations, those ETs just get "adopted" by new parents. I will be refurbishing and updating another one which was part of the original "dozen", built about 13 years ago and installed on the truck I designed and built 13 years ago. Anybody remember "Chef's" truck, the one with a garage for 2 motorcycles and a motorcycle lift?

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Finally the pin test.

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I've implemented another"minor engineering change". High hitching was common with Teflon plates on Binkley heads, if the plate thickness was "generous" in thickness. I re-positioned the jaws slightly higher to keep the bottom of the pin further away from the jaws with the plate on the pin.

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The cast jaws required three areas to be machined in order to work.

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Actually four, the swivel pin hole needed "touch up" too. That was true on the pins Binkley has cast and on the ones I had cast. The cost of cast parts was reasonable, once I bit the bullet and had the sand mold made (Binkley would not "agree" to sell these parts to me except at an insane cost). But the secondary machining

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and setup to do batches of these was quite expensive. This is not $15 bucks and hour job, this is $80 bucks an hour machine  shop time. The waterjet parts so far required none of that, I would say that waterjet is a great machinist. The only area requiring machining is taking away the material where the two jaws inter-mesh.

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And there is few minutes of welding of the spacer rings to the jaw.

And indeed you are eagle eyed, I have some work to do in the area where the block engages the pins and it will be different than it was on the cast parts. Since this requires some "trial and error" I had these machined with an "extra meat" to full around with and determine the final dimensions there (in steel it's easier to take material off than to add). Once I know from these prototypes what it is I will change that dimension for the production parts. 

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38 minutes ago, GeorgiaHybrid said:

Jim, the cast parts are a malleable cast iron that is then machined vs a steel plate. Don't know what grade of cast iron Henry spec'd out though.

That's what I'm wondering.  Is the steel of the same strength/hardness/??? as the cast part.  Assuming that the cast jaw is the same as the Binkley which is the industry standard for strength, is the steel jaw equal or greater?

 

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45 minutes ago, GeorgiaHybrid said:

Jim, the cast parts are a malleable cast iron that is then machined vs a steel plate. Don't know what grade of cast iron Henry spec'd out though.

Grade 2 (65-45-12)

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I'm sure GeorgiaHybrid can explain the difference. Incidentally, I had metallurgy lab perform the analysis of the original Binkley jaws before I got into the casting of duplicates.

The thickness of the steel parts and the cast parts is identical 1.125" thick in the critical area where they grip the king pin.

 

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