GuglioLS
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Jinma354 LE
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Post by GuglioLS on Feb 7, 2008 19:18:01 GMT -5
I had told you guys before that the home made subframe was kinda a tight fit, but it usually takes me 10 minutes to get it on. With Larry helping, it only took about an hour.Oh that's wonderful, thanks Rob, you sure know how to make a guy feel special. But hey, at least I had my side pinned first! I don't know WTF you were doing as I got my side pinned on in less than 5 minutes. No really what Rob said is true (to him), I think it really took about a 1/2 hour. Because we were messing around having a good time. It was a blast. Just another ho hum mod, As usual, you mechanical genius! Now for the rest of us, here's my Redneck Backhoe thumb that you can make with common hand tools, you know - hammer, hack saw, file, hand drill the kind with a hand crank. LOL - Take your "spare" 8" bucket and mount it back-wards on the boom. Like this: Larry
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3RRL
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Huge Kama
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Post by 3RRL on Feb 7, 2008 23:39:44 GMT -5
Christ, why didn't I think of that?
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Post by captinjack on Feb 17, 2008 10:22:34 GMT -5
Larry & Rob
Wish I had the skills that the both of you have.
I'm working in Pensacola until the middle of March so I can't do any projects, but I'm chomping at the bit to make some gauge wheels for my scraper blade.
I bought a HF 40 amp plasma cutter here as it was in stock and on sale, but I won't get a chance to fire it up until it's outa warranty. Cutting steel is my biggest challenge and this hopefully will solve that problem. I'll do a tool evaluation after I get some miles on it with the wheel project. After that, it's gonna be the thumb mod for the BH.
You guys gave me some great ideas and most importantly, the motivation. Can't wait to get to the cabin this spring and see how my dirt roads have held up over the winter.
Thanks again so much.
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3RRL
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Huge Kama
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Post by 3RRL on Feb 17, 2008 14:46:08 GMT -5
Hi Jack! Glad to see you here. If you're considering a gauge wheel project, be sure to check the Quick Attach Hydraulic ones I made to switch from implement to implement. It's a little more work, but worth the ability to adjust from the seat PLUS use them on all your implements.
I guess I haven't posted the build here yet, but I will. You know I posted it on other forums, right?
Larry, Oh that's wonderful, thanks Rob, you sure know how to make a guy feel special. lol ... I guess I took for granted that you were used to "being special" since when we were kids you always rode the "short bus". ;D ;D Rob-
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Post by captinjack on Feb 19, 2008 13:50:06 GMT -5
Rob
I'm going to make a pair using trailer tongue jacks and 2" hitch receivers so I can easily adjust the side to side elevation on the scraper blade and vary the blade to gauge wheel distance to control the degree of smoothing.
My design isn't fixed yet, but I have some good ideas from previous posts.
What I'd like to hear is how this type of gauge wheels have worked out for folks who have made theirs already. I know that I am going to make the wheels stout as they probably will take quite a bit of abuse. I'd like to hear the do's and don't of these wheels and how functional they are.
I don't have a rake yet, but will in the near future and will add hitch receivers to it as well so the wheels will be transferrable.
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Post by tjcarothers on Feb 19, 2008 14:44:34 GMT -5
Great Job, Rob. You and Loretta sure make a good team. My wife and I are too alike, and I would end up a bit bruised if we worked like that together!!!
Does your thumb work differently than the other mech thumbs I've seen advertised? I wish I had the mill and machinery to fab something like that. Just can't convince my wife that I need a metal shop along side my wood shop!!! No imagination!!!!
TJ.
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3RRL
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Post by 3RRL on Feb 19, 2008 20:24:47 GMT -5
Great Job, Rob. You and Loretta sure make a good team. My wife and I are too alike, and I would end up a bit bruised if we worked like that together!!! Does your thumb work differently than the other mech thumbs I've seen advertised? I wish I had the mill and machinery to fab something like that. Just can't convince my wife that I need a metal shop along side my wood shop!!! No imagination!!!! TJ. TJ, Yes, most of the thumbs are stationary. So you bolt them on the dipper stick and set their position. The other ones use hydraulics to move them. Mine is all mechanical and moves just like the hydraulic ones. Except since it's linked to the bucket curl, it moves only when curling or uncurling the bucket. Are you able to view the videos showing the movement? Rob-
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GuglioLS
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Jinma354 LE
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Post by GuglioLS on Feb 20, 2008 11:23:17 GMT -5
Larry, I guess I took for granted that you were used to "being special"; since when we were kids you always rode the "short bus". ;D ;D Rob- very funny Larry
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3RRL
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Post by 3RRL on Feb 20, 2008 11:51:36 GMT -5
Thought you missed that... ;D ;D ;D
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Post by dieseldrool on Aug 8, 2008 0:45:48 GMT -5
A very impressive piece of design and fab! It seems to work the way you intended. However I can't help but wonder if it couldn't have been made simpler. For instance, imagine that the bucket pivot and the thumb pivot each had a gear which meshed with each other. When the bucket rotated, the thumb would also rotate in a mirrored fashion. Of course gears couldn't be used in this application, but gears can be simulted by a 4-bar linkage, not unlike your approach, but with fewer bars. This bares some additional thought. Perhaps you have the minimum configuration. I don't know right now.
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3RRL
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Post by 3RRL on Aug 9, 2008 16:55:40 GMT -5
A very impressive piece of design and fab! It seems to work the way you intended. However I can't help but wonder if it couldn't have been made simpler. For instance, imagine that the bucket pivot and the thumb pivot each had a gear which meshed with each other. When the bucket rotated, the thumb would also rotate in a mirrored fashion. Of course gears couldn't be used in this application, but gears can be simulted by a 4-bar linkage, not unlike your approach, but with fewer bars. This bares some additional thought. Perhaps you have the minimum configuration. I don't know right now. Hi dieseldrool, Welcome to our Chinese Tractor World. Thank you for your comments on the articulating backhoe thumb. I tried to think of an easier way to connect the linkage, but by choosing the kidney shaped bar, I believe I have the minimum linkage components required to get opposing movement. Gears are an interesting option though. Perhaps not a natural for a thumb because the clamping pressure is so great unless you used a very large diameter spur to accommodate the forces. I did use gears in my boxblade modification though, where I made the scarifiers hydraulically controlled using gears. They were a good choice for that application. Perhaps you saw that thread Here: Hydraulic Boxblade Modification
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Post by richardc on Feb 19, 2009 20:26:49 GMT -5
Rob, I'm very impressed! Great job, great thread, even the tweek and fix. Richard
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3RRL
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Post by 3RRL on Feb 19, 2009 21:13:35 GMT -5
Rob, I'm very impressed! Great job, great thread, even the tweek and fix. Richard Thank you Richard! I've recently used the hoe to dig out a couple more Oak trees. You can catch the action on the LOG Home thread. I haven't posted as of this reply, but will very soon. In fact, I will update the thread as soon as I get some photos uploaded. It's like Photobucket is having a baby or something ... it's really slow for me. Rob-
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