L2502 3ph

awesome

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L2502, BH77, K54-22-06B
Sep 16, 2018
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Does anyone know if there is an upgrade kit, or some kind of hack, to make the 3ph installation easier on this tractor?

On my b2601, swapping the backhoe with the 3ph arms was very easy because it was toolless. On the l2502, I need a wrench. Of course, it's not a big deal. But i'd be ready to spend a few dollars to convert this to something with a pin.
 

Runs With Scissors

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I have never heard of one; However, my proclivity to “tinkering” thinks that there might be some sort of “cool project” idea here.

This is strictly “off the top of my head” so bear with me.

I wonder,…..If instead of the bolt that holds that pin in, we/you could make some sort of “bushing” that screws in, so that a “quick connect” pin could be used instead of a wrench?????


Hmmm…..I’ll try to draw something up and post my idea………


1757409352676.png
 

awesome

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Yes. i was thinking about doing aomething similar to that. But I was hoping these would exist already
 

Runs With Scissors

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I have never heard of anything, but here is an idea.

So a threaded piece is made to go into where the current bolt hole is.

It sits flush in the tractor housing. (possibly with the aide of Loctite???)


IMG_4415.JPG



IMG_4417.JPG


Then one of these style “locking pins” are used to secure the “Backhoe pin” assembly.


This is the hardest part though. Here is a rough drawing of the lock pin….You “push” the “titty" on the top with your thumb to release the "Locking ball”, and release it to lock the ball in place.


IMG_4419.JPG






I used that sytle “lock pin” on EA-6Bs to secure the landing gear, drop tanks/bombs……but I can’t recall ever seeing one short enough to work in this application………..and for the life of me I can’t remember what they are called…….

Anyways…...

Then it is used like this, to secure the plate/pin assembly to the tractor.


IMG_4413.JPG


IMG_4414.JPG




Thoughts?????

Other ideas?

Comments???

Concerns?????



EDIT: I am thinking that I have actually seen very short versions but I’ll be damned if I recall where/when……..Damn I hate that…….Maybe the Avionics guys had some super short ones….Or was it the Plane Captains??????
 

Sawdust&Shavings

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I have never heard of anything, but here is an idea.

So a threaded piece is made to go into where the current bolt hole is.

It sits flush in the tractor housing. (possibly with the aide of Loctite???)


View attachment 162298


View attachment 162299

Then one of these style “locking pins” are used to secure the “Backhoe pin” assembly.


This is the hardest part though. Here is a rough drawing of the lock pin….You “push” the “titty" on the top with your thumb to release the "Locking ball”, and release it to lock the ball in place.


View attachment 162302





I used that sytle “lock pin” on EA-6Bs to secure the landing gear, drop tanks/bombs……but I can’t recall ever seeing one short enough to work in this application………..and for the life of me I can’t remember what they are called…….

Anyways…...

Then it is used like this, to secure the plate/pin assembly to the tractor.


View attachment 162300

View attachment 162301



Thoughts?????

Other ideas?

Comments???

Concerns?????



EDIT: I am thinking that I have actually seen very short versions but I’ll be damned if I recall where/when……..Damn I hate that…….Maybe the Avionics guys had some super short ones….Or was it the Plane Captains??????
Plane Captains, definitely the Plane Captains.
 
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Chanceywd

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Kubota L2501DT BH77 VIRNIG URG60-CT 1950 8N WC-68
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I have never heard of anything, but here is an idea.

So a threaded piece is made to go into where the current bolt hole is.

It sits flush in the tractor housing. (possibly with the aide of Loctite???)


View attachment 162298


View attachment 162299

Then one of these style “locking pins” are used to secure the “Backhoe pin” assembly.


This is the hardest part though. Here is a rough drawing of the lock pin….You “push” the “titty" on the top with your thumb to release the "Locking ball”, and release it to lock the ball in place.


View attachment 162302





I used that sytle “lock pin” on EA-6Bs to secure the landing gear, drop tanks/bombs……but I can’t recall ever seeing one short enough to work in this application………..and for the life of me I can’t remember what they are called…….

Anyways…...

Then it is used like this, to secure the plate/pin assembly to the tractor.


View attachment 162300

View attachment 162301



Thoughts?????

Other ideas?

Comments???

Concerns?????



EDIT: I am thinking that I have actually seen very short versions but I’ll be damned if I recall where/when……..Damn I hate that…….Maybe the Avionics guys had some super short ones….Or was it the Plane Captains??????
What if you used a longer high grade bolt, cutting the head off and drilled thru the smooth part for a "hair pin" style clip to retain the link pin.?

The threads could be locktited and their length would be determined by the cast area they are in.
That would leave the smooth part for the link pin hole to be on.
No change would be required to the main pin as the hole would be the right size and line up.

Bill
 
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Runs With Scissors

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What if you used a longer high grade bolt, cutting the head off and drilled thru the smooth part for a "hair pin" style clip to retain the link pin.?

The threads could be locktited and their length would be determined by the cast area they are in.
That would leave the smooth part for the link pin hole to be on.
No change would be required to the main pin as the hole would be the right size and line up.

Bill

Excellent idea sir!!!!



BTW this idea has actually been on my mind for about 3 weeks previous to @awesome posting this thread.

I must have not tightend up the bolt tight enough and it came loose and I lost it, nearly losing the “main pin”.

I’m thinking something like the above “systems" might be a small improvement.


I suppose that one thing I am unsure about is

“How much pressure is exerted on that bolt?”

Would a “hair pin” or that “special pin” have enough strength?

I would think so…but??
 

Chanceywd

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Excellent idea sir!!!!



BTW this idea has actually been on my mind for about 3 weeks previous to @awesome posting this thread.

I must have not tightend up the bolt tight enough and it came loose and I lost it, nearly losing the “main pin”.

I’m thinking something like the above “systems" might be a small improvement.


I suppose that one thing I am unsure about is

“How much pressure is exerted on that bolt?”

Would a “hair pin” or that “special pin” have enough strength?

I would think so…but??
I think that that what is used on the sway links. I would want to position it with the hole vertical to minimize the chance of it getting knocked out . Also I would allow room for a washer
There is a style of hair pin clips that has a hump to help retain that.

I would think the reason why that pin is retained with a bolt is so it doesn't rotate and wear the casting the rotation is supposed to be on the lower link balls.

I know I have bought assortments of those flip over hitch pins at HF and there is some smaller ones in there but don't know if there is enough meat on a bolt that size to drill for them.

Bill
 
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ken erickson

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“I used that sytle “lock pin” on EA-6Bs to secure the landing gear, drop tanks/bombs……but I can’t recall ever seeing one short enough to work in this application………..and for the life of me I can’t remember what they are called…….”

Lots of Different styles , diameters and lengths. Google “quick release pins” or “push button quick release pins”. I have used them as rear wheel axles on my ridge wheelchairs for decades to quickly remove the rear wheels when I hop in my vehicle.

I included a picture of one style in different lengths .

IMG_0594.jpeg
 

awesome

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L2502, BH77, K54-22-06B
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All good ideas. Any chance you can build those and ship it to me ;) ?
But why put a hole lenghtwise? I was thing something that is threaded and then smooth on 1cm. So you would bolt this thing in, and then slide the part in. You would need a hole across the diameter to lock the part.
 

Runs With Scissors

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“I used that sytle “lock pin” on EA-6Bs to secure the landing gear, drop tanks/bombs……but I can’t recall ever seeing one short enough to work in this application………..and for the life of me I can’t remember what they are called…….”

Lots of Different styles , diameters and lengths. Google “quick release pins” or “push button quick release pins”. I have used them as rear wheel axles on my ridge wheelchairs for decades to quickly remove the rear wheels when I hop in my vehicle.

I included a picture of one style in different lengths .

View attachment 162327

Yep those are basically it.



My idea was/is simply an “idea”……The more I think about it, the more I tend to think that @Chanceywd idea of just drilling a hole in a pin, and using a "hair pin” is rather elegant in its simplicity.

Not only that, but the more I think about it, the more I think the "diameter” of those pins I was talking about would be problematic.

I do enjoy “thought experiments” though…….
 
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Chanceywd

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Yep those are basically it.



My idea was/is simply an “idea”……The more I think about it, the more I tend to think that @Chanceywd idea of just drilling a hole in a pin, and using a "hair pin” is rather elegant in its simplicity.

Not only that, but the more I think about it, the more I think the "diameter” of those pins I was talking about would be problematic.

I do enjoy “thought experiments” though…….
Is that their name?
I have them laying in bed not able to sleep and the solution comes to me sometimes, I have to get up and scribble a note to myself!
Bill
 

awesome

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Or maybe just some kind of long bar that pushes both pegs against each other
 

Runs With Scissors

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Or maybe just some kind of long bar that pushes both pegs against each other
Ooooo……that has my attention….

I’m gonna have to take some pics so I can reference them as I "mull this over’…...
 
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Runs With Scissors

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Is that their name?
I have them laying in bed not able to sleep and the solution comes to me sometimes, I have to get up and scribble a note to myself!


@Chanceywd …….Thats what I call them…..It sounds more “professional” than “spit ballin”…. :)

Not sure if there is an “Official Name” though……...
 

awesome

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Or instead of welding on a new pair of pins, could I use a rod of mild steel attached to square tubing that slide into each other with a hole to lock it?

Would mild steel be an issue for the 3ph attachment points?
 

Runs With Scissors

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Or instead of welding on a new pair of pins, could I use a rod of mild steel attached to square tubing that slide into each other with a hole to lock it?

Would mild steel be an issue for the 3ph attachment points?
I’m liking these idea's you have.

I don’t have my tractor “at the ready”, to do any measurments, but if there is not an interference problem, I am liking your “cross bar and pin” idea more and more.

In regard to “mild steel” question, I don’t see it as a problem, especially for the prototype.


EDIT: I’m gonna try to draw up a “cross bar and pin” thing today and post it…no promises, but I will try.
 
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