GuglioLS
Administrator 
Jinma354 LE
Posts: 1,276
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Post by GuglioLS on Nov 13, 2010 11:14:51 GMT -5
Hey Rob - Welcome to CTW! lol. Good to here from you man. I ditto Rich and Ron's comments - Nice design and as usual superb craftsmanship. So it' easier to connect? I mean much easier than if I had helped to attach it?  How much more reach do you figure you gained? From what I remember it looks to be quite a bit larger than the Nardi. I did notice you had the Kama completely off the ground, it really looks rock solid from here. I'm willing to bet your not quite done with it yet and there are more mod's to come. Perhaps DPOCV's on the outriggers? BTW I need to install DPOCV's on the outrigger cylinders on my Hoe. Do you remember where you got those valves for your Nardi? I found some at Surplus Center but they are like a hundred bucks each, add hoses and fittings I'm thinking ~ $300 installed. Larry |
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3RRL
Administrator
Huge Kama
Posts: 2,027 
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Post by 3RRL on Nov 13, 2010 13:23:29 GMT -5
Hey Rob - Welcome to CTW! lol. Good to here from you man. I ditto Rich and Ron's comments - Nice design and as usual superb craftsmanship. So it' easier to connect? I mean much easier than if I had helped to attach it? How much more reach do you figure you gained? From what I remember it looks to be quite a bit larger than the Nardi. I did notice you had the Kama completely off the ground, it really looks rock solid from here. I'm willing to bet your not quite done with it yet and there are more mod's to come. Perhaps DPOCV's on the outriggers? BTW I need to install DPOCV's on the outrigger cylinders on my Hoe. Do you remember where you got those valves for your Nardi? I found some at Surplus Center but they are like a hundred bucks each, add hoses and fittings I'm thinking ~ $300 installed. Larry Hello Larry my good buddy! Always nice to have your comments. You are right that this hoe is quite a bit larger than the Nardi hoe. And yes, as I said before, this subframe mod is indeed "rock solid". In comparison, the Nardi dug about a 6' long trench and I would have to reposition. The LW-8 digs about an 8' long trench before having to reposition. That doesn't sound like much, but in fact it's a 33% gain for me. Although it reaches WAY out farther than the Nardi, which is really nice, it doesn't dig the trench nearly as close to the boom as the Nardi. I'm looking into how I can make it dig a little closer to the tractor as one of the mods. If I can get it to do that, then the total gain would be fantastic. It would require a slight relocation of the cylinder connections for the boom and dipper stick. Same for the side to side swing. Although the side swing is rated at only 140° (compared to 180° for the Nardi) this LW-8 still swings nearly 180° already? Other mods are to add a pressure gauge so I can set the pressure relief valve to max on the hoe. Also to add a boom lock so the boom will be kept up during storage and transport. So far though, I'm impressed (surprised) that the boom has not leaked down but an 1/8 of an inch overnight. And the stabilizers (outriggers) seem to remain up and not leak down during digging...at least not nearly as much the Nardi hoe did. That's why I put the CPOCV's (double pilot operated check valves) on the Nardi. So maybe I won't need to do that just yet on the LW-8? Or maybe it was just the weight of huge Kama? Because after a couple years, I still found myself resetting the Nardi outriggers while digging...not nearly as much as before, mind you. Maybe it was just that the outrigger cylinders had a slight leak inside and fluid was slowly passing over the internal ram seals? For example, when I parked the hoe (disconnected from the tractor) for storage, the outriggers wold leak down after a year or so of sitting there. Anyway, I got the DPOCV's from Mark at CCM. In fact, I think I might still have 2 of them with all the compression fitting components. They have 3/8 BSPP straight (parallel) threads. I think I also have some adapter fittings from BSPP to JIC or NPT and 3/8Ø hose rated at 4,000psi, plus re-usable hose ends. I might even have some of those hard line tubing things I made out of SS hex stock? I just need to take a look in my barn if you are interested. Hmmm, let's see ... do you still owe me your first born or are we all squared up? Maybe I still owe you now? lol One other thing I might add about the LW-8 and this new Subframe. I can now leave the tractor bucket down (in float) and use the outriggers to prop up the rears. That is rock steady enough for digging. When I want to move the tractor, I raise the outriggers and push or pull the tractor to a new position. I can even raise up the tractor rear with the boom and a little help from the out riggers, then raise the outriggers and swing the boom sideways to move the tractor sideways a little at a time, of course!!  With this subframe being so solid, I'm not afraid of doing that. And finally, yes it is truly easy to attach. Way easier then the Nardi subframe. Not like when you helped me attach the Nardi that one time when you fucked it all all up, hahaha! ;D I'll never forget that day when you had your side pinned in about 1 minute and it took me an hour to finally get my side, lol. That Nardi subframe still had play in it which allowed one side to be hooked up without the other. This new one doesn't. When I back into the backhoe, I go until the lower frames interlock and butt up to each other. Then I can slide the connecting pins in on each side. All the reinforcing tubing keeping this subframe square and parallel keeps the line-up true. Then I use the backhoe boom and stabilizers to raise it up untill the top frame butts up against the ROPS. It can't go any farther, and that's when I screw in the two 3/4" bolts for that top connection. I think, besides the diamond shape and reinforcing between the subframe itself, that the bolted top connection makes this design so solid. Rob- |
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Post by Rich Waugh on Nov 13, 2010 21:25:12 GMT -5
"I'm very confident that there will be no damage to my tractor either from backhoe or FEL use now. Rob- "
Uhhhhhh, you're getting pretty far out on a limb there, Rob. Over the years I've gotten the impression that if a tractor can be broken, you can do it. ;D
Still, I gotta admit that that subframe is without a doubt the ballsiest one I've ever seen and shouldn't let anything happen to the tractor. Really an excellent design.
Rich
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3RRL
Administrator
Huge Kama
Posts: 2,027
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Post by 3RRL on Nov 14, 2010 12:18:02 GMT -5
"I'm very confident that there will be no damage to my tractor either from backhoe or FEL use now. Rob- " Uhhhhhh, you're getting pretty far out on a limb there, Rob. Over the years I've gotten the impression that if a tractor can be broken, you can do it.] ;D Still, I gotta admit that that subframe is without a doubt the ballsiest one I've ever seen and shouldn't let anything happen to the tractor. Really an excellent design. Rich Hahaha, great statement Rich! I guess you're right that I've done my share of finding out where the limits are ( past them too) on my tractor use! Thanks for kind words too... Rob- |
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Post by bradblazer on Nov 30, 2010 23:43:23 GMT -5
Rob, I finally caught up on this thread  Nice work on getting that big backhoe solidly mounted. Shoot, I had to think about mine for a year before I came up with a mount I liked  So are you going to mount the Nardi to Loretta's tractor? If your swing is near 180 I wouldn't mess with it. Mine goes 180 with the chain style swing mechanism. I've had to repair both links where the chains pin to the frame - I need to post that repair - I'm way behind on "real" posts. Mine doesn't dig real close either like my dipper cylinder could stand to extend a little more. So overall it sounds like the quality of the backhoe is pretty decent? We've all read some horror storys about the earlier Chinese backhoes. Thanks again for sharing, Brad |
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Post by traktorz on Jul 16, 2011 10:21:33 GMT -5
Interesting to hear about your Chinese made BH. Although it is securely tied to the tractor, the weakest spot I guess are the two boom swing cylinders, at least it's on our smaller LW-7. The bushings loose up and break the attachment pair of pins of the cylinders. Loctite Blue might be our friend now.
However, the LW-8 might be of another design and by another manufacturer, but wanted to give you a hint on where to keep an eye.
I'm eager to get our backhoe back in business soon now, since I finally got the hoses and fittings sorted out.
P.S.
Is your backhoe equipped with western fittings JIC, BSP? Or like all the LW-6/7/8 imported here, with Chinese Metric Flat Seat Hose Fittings?
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With this subframe being so solid, I'm not afraid of doing that.
