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  #31  
Old 04-08-2022, 05:20 PM
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Matt Shade Matt Shade is offline
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Quote:
Originally Posted by Ironman View Post
Matt, sorry for the Crude Cad, it was Ideas scribbled together, and things that made sense to me as shorthand when thing popped into my head. I will be making a 3point hitch design, driven by a PTO driveshaft, and as a Cat 1 three pint hitch does not offer a ton of wiggle room, I may have more to plan, but #1 son is asking for the shop this weekend, so this comes to a stop.
My sketch was probably more crude than yours haha. I've been juggling 2 broken spreaders, a set of custom gates, and 3 lame horses the last 2 days, I'm bound to catch on slowly
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  #32  
Old 04-08-2022, 06:37 PM
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Looks like Gerry is building a version of a potato digger. The ones I've seen use a simple crank for the pitman drive. A couple pillow block bearing on a short shaft should isolate the tractor pro from most of the shake.

https://youtu.be/81dNCnkm9Fc
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  #33  
Old 04-08-2022, 07:22 PM
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I like the Amish CAD projects where everyone says Hell Yeah we can put this together. Jerry & Rod are smiling on this one
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  #34  
Old 04-08-2022, 07:44 PM
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Does the motion of the blade happen in the forward/backward direction or is it side to side?
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  #35  
Old 04-08-2022, 07:52 PM
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Quote:
Originally Posted by camdigger View Post
Looks like Gerry is building a version of a potato digger. The ones I've seen use a simple crank for the pitman drive. A couple pillow block bearing on a short shaft should isolate the tractor pro from most of the shake.

https://youtu.be/81dNCnkm9Fc
Whoa! This digger has a cam on a flywheel!

This is, amazingly, the same thought I had for smooth operation. The flywheel runs the digger, and the shaft just keeps it spinning.

Probably eliminates a lot of jerking around.

Which is what I was doing, reinventing the wheel.
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  #36  
Old 04-08-2022, 08:58 PM
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So this is the fly wheel operated idea that I drew in the middle of the night. That’s what engineers do when they can’t sleep. They solve the unsolvable.

I didn’t draw every part of the framework.

After drawing this I decided it would be best to have the cam & followers operate off a much smaller cam attached to the round flywheel. That cam would of course be round and just offset on the shaft from the fly wheel.
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  #37  
Old 04-08-2022, 10:10 PM
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I don't know if you're on Facebook Gerry, but if so, is this the motion you're looking for?
https://www.facebook.com/groups/home...9060166073162/

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  #38  
Old 04-08-2022, 10:45 PM
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Quote:
Originally Posted by arizonian View Post
Does the motion of the blade happen in the forward/backward direction or is it side to side?
This is to be forward and backward in the direction of travel.

Quote:
Originally Posted by CaddmannQ View Post
So this is the fly wheel operated idea that I drew in the middle of the night. That’s what engineers do when they can’t sleep. They solve the unsolvable.

I didn’t draw every part of the framework.

After drawing this I decided it would be best to have the cam & followers operate off a much smaller cam attached to the round flywheel. That cam would of course be round and just offset on the shaft from the fly wheel.
This is complex and impressive amount of levers or fulcrums. But will work.
If I get another week at it I can tack some crap together and show you all my idea.


Quote:
Originally Posted by JBFab View Post
I don't know if you're on Facebook Gerry, but if so, is this the motion you're looking for?
https://www.facebook.com/groups/home...9060166073162/

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JB, I'm not on Fecebook, but that site does look interesting.

Here is a video with the undercutter and the plant pickup all shaking together to knock off dirt.

Here is a powered undercutter with a dirt shaker grate which I won't be doing.
Hope this gives you guys the idea of what I'm doing.
Harvesting carrots like this means they have the blade down about 10" deep.
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  #39  
Old 04-09-2022, 05:44 AM
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Gerry needs a wobble plate from a hydraulic piston pump, would work as a ‘vibrator’ against the cutting edge.


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  #40  
Old 04-09-2022, 09:44 AM
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Eccentrics that will work for what Gerry needs are a dime a dozen in farm country. Every sickle bar mower, haybine, swather, and straight cut combine header has one to run the knife. I'm pretty sure there were a dozen of them laying in the weeds on the farm I grew up on.
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