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Vehicles & Models / Re: Chris's Marion 91 Steam Shovel
« Last post by derekwarner_decoy on Today at 10:17:01 PM »
Chris......slow speed, high load spherical motion transmission couplings are very interesting  :hellno:

If my understanding is correct, there will be a single surface point contact between the male spherical to the female spherical surface '

From there, the actual motion [drive] transmitted will be between each of the head OD's of the 4 pegs and their corresponding cavities

So each of the 4 pegs are subjected to a shear movement :hammerbash:, however are supported against shear by the head to cavity dimension

Possibly they were intentionally non lubricated ...[as air borne dust & grit is attracted to lubricated surfaces], so just relied on composite materials in construction....[as you have done]

Derek
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Mistakes, muckups, and dangerous behaviour / Re: Boo Boo Bin
« Last post by Vixen on Today at 09:16:01 PM »
Or a 'make a mess of the chuck' command
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Mistakes, muckups, and dangerous behaviour / Re: Boo Boo Bin
« Last post by crueby on Today at 09:08:41 PM »
What happens when you type in a G00 Rapid Move command instead of a G01 controlled feed rate move?


Looks like the make-a-spring command!
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Mistakes, muckups, and dangerous behaviour / Re: Boo Boo Bin
« Last post by Vixen on Today at 08:54:01 PM »
What happens when you type in a G00 Rapid Move command instead of a G01 controlled feed rate move?

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Your Own Design / Re: Two Cylinder Engine
« Last post by Gas_mantle on Today at 08:17:57 PM »
Looking great Roger, can't wait to see it running  :)
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Your Own Design / Re: Two Cylinder Engine
« Last post by Roger B on Today at 08:06:49 PM »
Thank you both  :ThumbsUp:  :ThumbsUp:

Art,  I could radius the sparking plug side but the manifold side would have to remain flat (the ports have to be outside the push rods) I think I will keep to as much of the original design as possible.
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Chatterbox / Re: Officially Shopless
« Last post by Roger B on Today at 08:02:23 PM »
I'm sorry your time has come  :( you have taken it with great dignity and passed all you can onto the future  :praise2:  :praise2: You have all my respect.
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From Plans / Re: Easton and Andersom beam engine at Bressingham.
« Last post by Roger B on Today at 07:59:31 PM »
That's an interesting prototype and a good start on the model  :praise2:  :praise2: What does that little brass plaque, open and shut, next to what I think is a pump rod refer too? My knowledge of these engines in very limited based mostly on Crofton and the Brighton Enginerium.
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Chatterbox / Re: Officially Shopless
« Last post by Bearcar1 on Today at 07:56:56 PM »
Cheers, Chuck. I would just like to begin by saying thank-you. For over the years, I have watched with keen interest, your works coning to life. It seems that a fork in the road of life has been reached and a passing of the torch has been made. Well done sir, and once again thank you. It is my hope that we will see something from your sons projects in metal gracing these pages in the future. Best regards, and good fortune to you.


Bearcar1
Jim
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From Plans / Re: Easton and Andersom beam engine at Bressingham.
« Last post by Jasonb on Today at 07:15:19 PM »
I've seen similar done with thin copper shim pressed into a negative that was then soft soldered to thicker material, not sure if it would work with the very thing raised areas on the E&A style but looks good on a "cast" step.
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