Re: JBC limited NZ
 

over the last couple of days Ive been struggling to dig in my chosen area due to the compacted gravel, the dozer can rip most of the rocks but its slow going.
Then I had a brain explosion, lets make a rock ripper bucket.

http://i1322.photobucket.com/albums/...ps3ffbb6f4.jpg

http://i1322.photobucket.com/albums/...ps68937556.jpg


I ran out of gas and its unfinished but I had to test it.

Magic, digs great and moves the rocks no worries, its a little small and will take a little while to clear away all the rocks but now I have reached the dirt.

got sick of swapping buckets so I made a manual quick change.
started with this .

http://i1322.photobucket.com/albums/...psdf1f5f8a.jpg
and ended up with this.

http://i1322.photobucket.com/albums/...psbc064d86.jpg

tonnes of rocks to put through the trommels and may even find some gold, :lol:

Re: JBC limited NZ
 

heres a quick video of the rock bucket in action,

http://youtu.be/n3H_JwAq3lc

Re: JBC limited NZ
 

one more project finished.
rock bucket done.

http://i1322.photobucket.com/albums/...psc72c5ec4.jpg

http://i1322.photobucket.com/albums/...ps249e5ec4.jpg

Re: JBC limited NZ
 

Good work on the quick attach & rock bucket.

Rock bucket will be great for trenching, but I think a ripper tooth to rip a large area & then use a big digging bucket to clear the cultivated area would go a lot faster.

Re: JBC limited NZ
 

Hi,

Nice job on the bucket.

You have a cat 322 rubber tire excavator in the back ground of one of your pics.Would you posts some pics of that please?

Thanks

Re: JBC limited NZ
 

morning all,
cheers Joe, now that I have the quick attach sorted the ripper sounds like a good plan.
I also have the original bucket , not much good for digging as its lightly made and bends under load.
the plan for that one is hit it with the splitter blade and make a screening bucket, don't know how much use it will be but at least it wont take long to swap over.
cat 322, its the china buy excavator, have swapped all hyd lines for high pressure lines, swapped out the pump and motor, valve bank and esc's for RC4WD set up.
same as my RC4WD excavator, will also have to reinforce a few of the boom mountings as they are pretty light and also need some bushes made.
this will be a test for my young fella to see how good he is using the mill and lathe.
all the hyd parts will be transferred to the rock truck for the tipper and steering,

http://i1322.photobucket.com/albums/...psd607b1fb.jpg
and one of the loader, still going great!

http://i1322.photobucket.com/albums/...psd80a675d.jpg

and dozer all done
http://i1322.photobucket.com/albums/...ps41357068.jpg

cheers andy

Re: JBC limited NZ
 

Could you direct me to where you bought the 322 please? I have been looking all over and i cant find it.

Thanks

Re: JBC limited NZ
 

I got it of the buy china web site, just had a quick look and its now on aliexpress web site.
If I were you I would get the shell and fit rc4wd hydraulics and radio gear.
It is lightly built compared to the rc4wd excavator.
I would also cost it all up and do a compare to buying the rc4wd excavator , I know its not as nice to look at but its a turn key and dig machine that will last longer than the KAT excavator.

heres a link to aliexpress
http://www.aliexpress.com/store/prod...944515294.html
cheers andy

Re: JBC limited NZ
 

found another option, another Chinese excavator
http://www.aliexpress.com/store/prod...944536302.html

Re: JBC limited NZ
 

had a bit of a play with the new set up, digs pretty good.
sound is terrible, lap top that I used to video this , its mic still has issues that will soon be fixed with a hammer... :mad:

http://youtu.be/p9fPalXZK4U

Re: JBC limited NZ
 

so we got a couple of new, hopefully not diggers.
http://i1322.photobucket.com/albums/...psbdd5e12e.jpg
I can see my shed time being cut down for a while.:jaw:

Re: JBC limited NZ
 

ok took joes advice and made me a ripper, run out of time so the paint job will have to wait, haven't even tested it yet.
looks ok so should work:o

http://i1322.photobucket.com/albums/...ps6fbabc82.jpg

http://i1322.photobucket.com/albums/...ps628bd3e5.jpg

Re: JBC limited NZ
 

looks like its going to get the job done!, very nice

Re: JBC limited NZ
 

That looks like cold rolled steel you're using :thinking:, if so, you'll probably loose your point pretty quick & the tooth will not be effective.

This tooth I made, not very prototypical of anything, but it works very well. Those are 3" ardox nails that I weld on... they wear out eventually, cut 'em out, weld on new ones. The width of the shank is 3mm.

http://img.photobucket.com/albums/v1...2012/016-5.jpg

The pic above with your wife & new dogs, judging the weather in the background it looks absolutely fabulous... and it's like that most of the year for you too right? ya lucky bugger. :cool:

It was -18 here today with the wind chill @-28 & I didn't find it too bad with a couple of layers of clothes... getting acclimatize I guess. :/

Re: JBC limited NZ
 

I think that's why they call it Canada cold, been there years ago and seen what happens to washing left on the line over night. LOL
Im going to talk to one of the engineers at work tomorrow and see if we cant put a hardened edge on the ripper.
have made a video and uploading now , I tel you it makes for easy digging once its ripped up and way quicker.
I made the blade so it can be unbolted and swapped out so can try different shapes and sizes, but this one seems to work nicely.
Just need to set up conveyors and start feeding the screening plant, unfortunately im back on shift so it will have to wait.
oh by the way its +28C today...
stay in your shed and keep warm.

cheers andy

Re: JBC limited NZ
 

video done

operator needs to work out how to use this properly.
http://youtu.be/XJ2n5i60PMM

Re: JBC limited NZ
 

starting to make some head way with this hole, ripper working sweet but my attempts to use the quick release are a bit comical, I think I need a bit more practice.:lol:

http://youtu.be/YdR3UV63b-I

Re: JBC limited NZ
 

Do you have dual rates or flight mode in your radio programming? If so, lower your EPA settings for valves & swing so it makes your stick throw on the gimbles less sensitive & you will have much finer control while trying to change attachments. Then you can switch to a different rate of throw for digging.

On airplane radios it's usually just aileron, eleveron & rudder that have dual rates, and with Fmode you can change throttle curve per mode to achieve the same characteristics as dual rates.

When I 1st started rc excavator in 2001, I operated my model much like the way you are now. Something that was said to me by an experienced machine operator after showing him my model, "what separates the best from the rest is how much the tracks move around while digging at full capacity of the machine".

I don't wish to be mean or rude, but rather be helpful to guide you to operate your model with greater finesse & professionalism, it makes watching videos of what you're doing more enjoyable. :)

Re: JBC limited NZ
 

cheers joe, I have the standard flysky radio that came with it, I would like to have a go at changing how much the valves open and swing speed to achieve a slower movement as to make swapping the attachments easier.
Since i never got a manual with the modle i havent messed with the radio settings, figured if I messed the settings up I wouldnt know how to get it back to what it was.
I know it has a flight mode , will search internet for a manual, did you change any settings on your rc4wd excavator to make it smoother and if so do you remember what they were .
as Im new to these multi channel radios I have some learning to do, but am not affraid to have a go now as there are plenty of guys here that are willing to share there knowledge to help an amature like me.

cheers andy:)

Re: JBC limited NZ
 

Nice job on the ripper Andy, one came with my 944b but not had chance to use it yet, I didn't think I would but after seeing yours maybe I'll give it a go!

On the radio, I've added curves to the valve channels, so when you move the sticks the valves only open a tiny bit to start with, makes small movements much more controlled, the same curves also ramp the pump speed up.

Keep up the good work
Stu

Re: JBC limited NZ
 

Have just found the manual for radio so will be doing a bit of study. Lucky im at work and no excavator.
means I will read all instructions before messing it up.

Re: JBC limited NZ
 

I got a radio manual with my RC4wd hoe, but the English translation was quite poor & didn't offer much sensible info anyway... my model didn't run long enough to let me do much with it.

I recall changing servo travel (EPA) & it being easy to find/to do in the programming, though I don't remember the sequence of what I did today. I think you want to look for either servo adjustment or servo travel to find the EPA values.

While EPA values can be equal on both sides for bucket & stick, I usually program a very low value for boom down because of the effect of gravity... the Vario 850 has a very heavy boom/stick & @100% EPA will drop very fast with very little stick throw... currently boom down is 60% & up is 100%. The boom/stick on your model is considerably lighter, but on the other hand it still has a long boom & stick and gravity with have some effect with a bucket full of dirt... plus your hyd pump & motor is a poorly matched combo, you have too much flow & too much pressure for that size of model.

What I did with my Stahl excavators (22lbs gvw) to set hyd pressure was with the bucket perpendicular to the tracks, set the pressure so the stick could just barely pull the hoe sideways on hard ground (that's with both tracks staying grounded). The pressure was about 16-17bar with a 14mm stick piston. My Vario is just too heavy & that test is irrelevant, even @35bar with a 22mm stick piston, it doesn't have the hyd power to pull itself sideways. I see it advertised that china hoe weighs 44lbs... mine weighed roughly 32lbs with a NiMH 4amp battery.

Re: JBC limited NZ
 

thanks Joe, i notice mine will drop the bucket like a stone with too much stick movement and it will also pull it around too easily.
I will have a go at changing the epa for a few movements to get it more life like and dehorse power it.

If I read the manual( good translation) Ive got no excuses for messing it up.
but I may still ask some dumb questions till i figure it out.. :lol:
thanks for the advice.

cheers andy

Re: JBC limited NZ
 

mark two version of the ripper, stainless steel and pointy.

http://i1322.photobucket.com/albums/...ps34c2be28.jpg:D

Re: JBC limited NZ
 

Great job!
Cheers, Neil.

Re: JBC limited NZ
 

WOW! nicely done Andy. :cool:

Re: JBC limited NZ
 

Hiya Andy. Loving your setup you got there. Just one question though. Does the King Hauler pull your 4200xl ok? Was just wondering as i am getting a 4200xl and i am already think about a low loader lol.
Cheers Chris

Re: JBC limited NZ
 

Hi ya chris. The king is fitted with a pmd 4:1 reduction box (in the retail section) bolts directly to the original gearbox and pulls my 35kg dozer no worries.
there is a youtube link some where on the jcb forum, even pulls wheel stands under load.
I stretched the frame and added an extra set of drive wheels for looks and added traction.
having said that my knight hauler (standard) will also pull the dozer, but not as easily.
once you get one piece of gear you will always need something else. Lol.
keep on trucking.
Cheers andy.

Re: JBC limited NZ
 

had the urge to have a play wit the king hauler, loaded up the excavator and grabbed a battery to find out that after 10 minutes that it wasn't fully charged.
dosent matter it was a good stress relief and I have a few more ideas of stuff I can do to the truck. lights , lock rear diff, the list just keeps growing.

cheers andy :D

http://youtu.be/vYNSI41OoLk

Re: JBC limited NZ
 

http://i1322.photobucket.com/albums/...ps93a00be0.jpg


http://i1322.photobucket.com/albums/...psbb2ae388.jpg

Re: JBC limited NZ
 

as I have mentioned I may ask some dumb questions, well here is the first one.
I have had a play with the radio settings for the excavator, have managed to slow the rate the boom drops and also the rotation, really happy so far.
problem is that my pump is now going in reverse??
have checked all switch operation and seen how they work in the display screen, all looks as it should be.
pump starts when the switch is operated but in reverse, have reversed the switch but all that dose is change when the pump is on.

any ideas..
cheers andy

Re: JBC limited NZ
 

I take it you didn't remember what settings you changed then? Good idea to write down everything you change before changing it.

Re: JBC limited NZ
 

Just sounds like you have reversed a channel some how

Re: JBC limited NZ
 

Think I got it sorted. Can any one tell me what direction the pump motor turns.
I have run the system dry due to a pump seal leak but have swapped the motor wires around to change direction and now have to bleed the system. Just need to know what way it should turn.
new pump should be here soon then it is back to digging.

Re: JBC limited NZ
 

Is the suction line from the tank to the pump see through? Even if it's a black line so you can't see the oil coming from tank, you should still be able to hear if the oil is being sucked from the tank or if the pump is blowing air bubbles into the tank.

Re: JBC limited NZ
 

Yes got direction sorted, pump seal at motor end has been leaking for a while ( new one should be here in days) by the sound of it it is probaly shot. I have arm movement but not enough flow to clear air properly so will wait for post man.
also will flush all lines and cylinders and replace oil as old oil was foaming pretty good.
but I did get to test new ripper.
it works much better with the curve, gets in under the rocks realy nicely.
Cheers andy

Re: JBC limited NZ
 

What sort of hydraulic oil and what battery are you using in your 4200xl buddy?

Re: JBC limited NZ
 

The recomended oil as per rc4wd and a 6500 lipo.

Re: JBC limited NZ
 

the 15 or 22?

Re: JBC limited NZ
 

Im uesing the tellus 15 equivalent which is a dte light by mobil as its free and avaliable at work.
the hydraulic guy here at work recomended it for the application but he insisted on a test drive just to make sure it was ok, that was almost two years ago. So I can say the mobil oil works, no leaks from ram seals.
lf you use an oil that is too light it will cause issues and the same if its too heavy.
got a quote for 20 liters yesterday $120.00 , its the smallest container they sell.
should last a long time.