Re: Great Dane excavating co.
 

Your a kind hearted soul RW..... Can't say what I would've done. :cop: there would be no second chance needless to say.:rolleyes:

Re: Great Dane excavating co.
 

the dozer weighs more then the mutt,
i would have tossed it in reverse

Re: Great Dane excavating co.
 

Yes, but my wife weighs more than the dozer,,,,,,, uhhh the 1:14 scale honey ;) you don't weigh as much as a d11!!!!

Goes like this in that scenario , dog pees on dozer, dozer runs over dog, wife sees dog get run over, dozer gets run over by wife!! Husband needs new home to rebuild dozer!!! Lol!!!

Re: Great Dane excavating co.
 

On the other hand at least it wasn't the big dog, (Great Dane). That would have been a torrential downpour!!!! Total flood reclamation project!!!

Re: Great Dane excavating co.
 

Big dogs have more respect....

Re: Great Dane excavating co.
 

http://i1357.photobucket.com/albums/...ps56kv6njm.jpg
It's been a while since the zoo has had an appearance here!! All three "big" dogs!! The little shyt thinks he is a big dog, they are waiting for dinner , or my leg!?!

Re: Great Dane excavating co.
 

Where's Napoleon and the cat ? Mike. My wife agrees with Bigford put in reverse keep the big ones !

Re: Great Dane excavating co.
 

reverse would have been a bad idea. LOL
we have two rotties and a british bull dog, lets just say the bigger the dog the bigger the brain.
my wife may disagree due to the fact that the bull dog is hers but heres some examples.
example 1: my rotties have never run into a closed ranch slider door...
example 2: when leaping out of car my rotties have never landed on their face...

cheers andy

Re: Great Dane excavating co.
 

Lol!!! That's funny and true!! Thanks Andy!!

Re: Great Dane excavating co.
 

Gonna have some weekend work to do so I figure I better eat healthy,
http://i1357.photobucket.com/albums/...psdvj2ke0i.jpg

This is the little river hostel,
http://i1357.photobucket.com/albums/...ps9aiundah.jpg
http://i1357.photobucket.com/albums/...psop5knehc.jpg
Track I've been working on
http://i1357.photobucket.com/albums/...ps2j4zju8f.jpg
And what every Riverlot needs , a good stocked toy box!!
http://i1357.photobucket.com/albums/...ps9svf1zln.jpg

Re: Great Dane excavating co.
 

Beer and veggies no meat!? What a awesome camp and toy box .Sandy and I think it's neat.

Re: Great Dane excavating co.
 

my doberman wanted to go for a
truck ride so opened the door on my
k5 blazer and jumped right into the quarter
panel head folded under his chest and flat out
cold.

Re: Great Dane excavating co.
 

Lol! I had a Dane run full blast into a sliding glass door, almost knocked him out , definately stung him!! I never have seen glass flex and bow like that door did!! Don't know how it didn't break. The glass or his neck !! And almost had one dog remove his lower jaw from his head by running in woods with a long log in his mouth, tried to thread the needle between two trees!!! He found out it didn't work!!! Lol!!!

Re: Great Dane excavating co.
 

Almost done with another access road. Goes from top of lower bank to river. The pic doesn't look steep but the steps in foreground show steepness of bank. Lots of finger roots to bust, had to use the small hatchet on some.
http://i1357.photobucket.com/albums/...pshqqf3t4y.jpg

Re: Great Dane excavating co.
 

http://i1357.photobucket.com/albums/...pszzzxgfk1.jpg
http://i1357.photobucket.com/albums/...psdxonf0tt.jpg
And shortly after running excavator a pin broke in gear head on tracks. Was using excavator to chew through roots on bank then using dozer to push level road surface. The original drive system for the 4200 is a lot slower than the "upgrade" system but stronger in my opinion. Not worth the $300 if anyone interested.

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YOUR FIRED!!! tearing up company equipment!!!

Re: Great Dane excavating co.
 

Lmao

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Doggy depends diapers? Lol!

Re: Great Dane excavating co.
 

http://i1357.photobucket.com/albums/...pstviaihpx.jpg
http://i1357.photobucket.com/albums/...psmncj2ppy.jpg
http://i1357.photobucket.com/albums/...ps2a1xcp5h.jpg

Ok so tires were a limiting factor in what size haul truck can be made, and I am also limited if I can't figure out how to make telescopic cylinders. I'm making on out of brass first. Figure I can solder ends easier than brazing stainless. And brass is way easier to machine for me than stainless. If I can make these work I'm going to try and make the finished cylinders out of 416 stainless and solder/braze parts together. Pics above are a start, I have to make a small hole in first stage to allow oil to fill inner chamber on stage two. So these are in theory going to be very similar to the real deal multi stage hydraulic cylinders.

Re: Great Dane excavating co.
 

Cooper your drawing of the cylinder shows a lower and an upper port why? If you are going for a telescoping cylinder you only need one port. As for your cylinders you don't need a hole on the stage bottom you just need the tube and the seals to keep the oil in the cylinders. Your picture shows a bleeder on the top stage and that is good but not really need for what you are going to do. You will need o rings to seal the stages and to be guides. Hope I have helped it has always been my intentions to build a multi stage cylinder but that is as far as I got. Ed

Re: Great Dane excavating co.
 

Yes, you are right, the smaller rod is hollow because that's what I had on hand. The final one will not be hollow. And the piston part has two orings, only one will be there on final, I made the second one for centering purposes at the other end. (Just for initial set up and experimenting. ) the drawling was just a image I found off the net, it is not what I'm planing on final. I'm planing on using orings top and bottom which will center piston/shafts anyway. The way I'm making them is cutting/milling inner oring pistons and outter pistons (one on each end) and soldering them on. Well basically soldering on chunks of brass then machining them down to size. The hole I'm referring to is to allow oil to enter on retraction and exit on extension between cylinder stages. If not there it will lock and not move. I've been wanting to try building some of these for some time now and am finally getting around to it. Just figured I would make a trial one to see what pitfalls scale parts have. And once I get an working idea of what to do (and what not to do) I'll be able to slim down as much as possible and make them from stainless. ,,,,, I think:)

Re: Great Dane excavating co.
 

Atta boy!!! :D :lol: He must have some JD in his blood! :lol::cool:

That pug just cracks me up with each pic you post. :)

Re: Great Dane excavating co.
 

Joe it's a French bulldog! My wife gets mad at me when I call him a little pug pig!! Lol!!!

http://i1357.photobucket.com/albums/...psgpkye30a.jpg
http://i1357.photobucket.com/albums/...pswswigkst.jpg
Some more done, I got them working without internal locking. Have a small hole right above each piston to allow oil to fill/empty chambers. After looking at truck cylinders I may have to have the smallest rod hollow as they are mounted inverted and oil pumps from bottom. Some more creative work to be done.

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I'm using 1/16" size orings, if I use smaller cross section orings I would be able to get cylinder wall thickness thinner. Only 1/32" oring thickness McMaster doesn't have in those sizes. Small thickness metric orings available but I don't think the cylinders this size will look too out of place on a machine such at a 777 or 773 haul truck. And they are only visible when dumping. I'm more into function than exact scale anyway. And I'm not sure how easily I can machine the inner oring grooves on stainless. You machinist guys,, would some soft steel be just as good for cylinders? Easier for me to machine and I imagine a good polishing would last on a oil filled cylinder. I just have always used stainless on hydraulic rods.

Re: Great Dane excavating co.
 

Try some 12L14 "Leadloy" free machining steel if you want machinability.

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I have no problem on 316 . But then again you need your S&F's right . Oh your doin this manually :p Looks good so far .

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Yeah, all hand crankin!! Problem I have with my skills, tooling, small machines is trying to machine the inner dimensions and being 3" deep. That's why I was using tubing and making the tops/Pistons separate then soldering/brazing them in. Then going back and final machining to size. I have to make some small inside groove cutters. Only have one that I've made and it took me a bit of time grinding that one. Always seems like I spend way more time making the tooling than parts!!! Lol! Guess that how it always is!!

Re: Great Dane excavating co.
 

by the time RW is done with this piston he could have bought 2 scaleart 5 stages
LOL!!!!!!

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Haha ! Just remember that if I see you next weekend!!! Lol!!! I'm just happy I can finally make something! Even if it doesn't work!!!

Re: Great Dane excavating co.
 

ya working with a busted wing is rough!!

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Hi Cooper one thing when you polish the cylinders you do not want a high polish you need something that will grab the oil so you want smooth not polished.

Re: Great Dane excavating co.
 

ID grooving, I found them on McMaster . Oring groovers and snap ring groovers . You have to take them slow and a very good sense of touch , they break easy . Always use tube for your barrels. Manual or cnc , you should be able to do stainless . You could chrome your barrels .

Re: Great Dane excavating co.
 

http://i1357.photobucket.com/albums/...ps17m0e4ew.jpg
http://i1357.photobucket.com/albums/...psrja5ddc2.jpg
http://i1357.photobucket.com/albums/...ps4lnnsi22.jpg

Re: Great Dane excavating co.
 

Well I got it working,,,, problem I encountered on final polishing and installing new orings was on the outter most cylinder the groove I cut for inner seal let loose. The way I did it was to use tube and soldered onto end a piece smaller diameter that I could cut the groove inside. Problem was when I soldered it the solder did not penetrate the whole piece. The grove was cut just a bit into the tube so without the solder wicking the entire piece the small ring is now loose. Now I've got to take all apart again solder it in place, re grove without de soldering end. Ahh the wonderful work of not doing it right the first time!!! I think what I did wrong was had tolerance too tight and that did not allow addiquate wicking of solder on entire surface. Sooner or later(apparently later) I'll get this working. And I also realized I need to rig up a pump and tank to use as a test machine. Slowly getting there.

And thanks for the input on # of stainless and McMaster grooving tools, I don't know how I missed them on that site!!

Re: Great Dane excavating co.
 

we'll have to talk next weekend

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http://youtu.be/8JNPGro3SZs

Just the prototype of a telescopic cylinder. Now I know I can make them, so,e modifications in place but the simple concept works :)

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3 more stages!!!

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Awesome stuff RW!

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Mark, I don't know how big a six stage cylinder would be with materials I'm using!!! 1/4" increments on tubes,,, a lot smaller cross section orings and it would work. Ones I'm using are 1/16". Need at least 1/32 for more stages.

Reg, they are actually pretty simple and easy now that I know what to do. I'll post up some pics of how I actually made it

Re: Great Dane excavating co.
 

http://i1357.photobucket.com/albums/...ps7xmtwif0.jpg
http://i1357.photobucket.com/albums/...psdcjaslup.jpg
http://i1357.photobucket.com/albums/...pshdlfmqrx.jpg
http://i1357.photobucket.com/albums/...psawcnoqhe.jpg
They are the three sizes of tube I used. And in the one pic I have a scribe pointing to the holes in tubes that allow oil to enter into on the downward stroke and oil to exit on the upward stroke. The smaller piston has two orings but doesn't need two. When I made it first I was using it as a guide. Well a mess up really:). I just soldered bigger solid caps onto tubs, then machined the hole and inner oring grove. That way I never had to worry about messing up inner parts of tubes. Polished them before soldering/ and again after. I want to make them out of steel or stainless for project on dumper. Just don't know how easy that will be for me to work. I'm usually just brass and aluminum.