Re: JBC limited NZ
 

hi bigford , no the KAT is still going to be using the original cylinders, but I will be turning the pump speed way down, and see what happens.
This was supposed to be a budget build using all leftovers but we all know how these things get out of hand....

I had a plan to make the thumb mechanism today , but things changed.
Mario asked a simple question on the length of the KAT compared to the 4200.
Over night I hatched a plan, any way heres the results, still unpainted but structurally completed.

I think it looks way better 50mm longer. :D


http://i1322.photobucket.com/albums/...psxs9m23s3.jpg

http://i1322.photobucket.com/albums/...ps55nryjbi.jpg

http://i1322.photobucket.com/albums/...psmcdye4lf.jpg

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

http://i1322.photobucket.com/albums/...pss5cyipvt.jpg

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

cheers andy

Re: JBC limited NZ
 

Looks great! Now I see it and realize what a short tail end the 4200 has.
The reason I asked the question in the first place was the pic you posted showing the pump and valve next to each other on the right and battery laying front to back behind cab. Seemed like more room. Speaking of room, did you gain lots of space to rearrange things inside?

Re: JBC limited NZ
 

the KAT has a bit of room in it , but now the 4200 has more.
Im going to leave the original placement set up in the 4200 but will now place battery next to counter weight across the back of the excavator as there is a lot more room at the back, and it will make changing battery easier.

now I have run out of paint , so maybe get started again on doing the KAT thumb.

cheers andy

Re: JBC limited NZ
 

more progress, but I have a question .
Ive made some solid lines out of stainless tube to fit to the main boom, just sitting on there temporarily , but before I cut the plastic lines .
How do you guys seal the fittings on.
Ive tapped them at 5mm which is the correct size for my fittings , I will change the bottom fittings for right angle fittings, but do you use any sort of tread lock or sealant.

http://i1322.photobucket.com/albums/...pskhmdhp3s.jpg

http://i1322.photobucket.com/albums/...ps2u7iddll.jpg

I have made some access panels to cover the ugly air vents, and will run a fan at the top of the engine cover to take hot air away.

http://i1322.photobucket.com/albums/...psuf5icbai.jpg

cheers andy

Re: JBC limited NZ
 

As far as the fitting for hydro lines , the fittings should have a plastic washer. That makes a seal on the flat of hardline. If you using the stainless turn the ends perfectly square to the pipe. That will give you the flat seat for the plastic washer to compress and seal. I'll try and find a good pic.

Re: JBC limited NZ
 

cheers cooper,
I spun them up in the lathe, so nice and square, just worried the plastic washer wont do the job and end up with a big sticky mess.

thanks andy

Re: JBC limited NZ
 

had to have a quick play

https://youtu.be/fGXRBMoZsYc

cheers andy

Re: JBC limited NZ
 

im a happy camper....:D
very reluctantly cut the first hydraulic line ...
then another until all cut and fitted in their new home..

turn on pump and close eyes..

only one leak for the bucket curl at the end of the long line outside the excavator..

now I need to find some more bolts so they all match, and make a few clamps for the long line on top of the boom , and shorten a few lines.
then it all can go into the paint booth.

had to test it out properly , one hour of digging , no leaks and really happy with how it looks now.

the seal that leaked was the rubber o ring on the fitting.
I had a few spares but they are copper washers , so replaced all seals with copper ones.

http://i1322.photobucket.com/albums/...psid691ike.jpg

http://i1322.photobucket.com/albums/...psytkxpj11.jpg

cheers andy

Re: JBC limited NZ
 

got a deliver out of the paint shop today.:D
also made a whole lot of little brackets for the solid lines , rerouted the light cables in hydraulic hose and used an original hose clamp to hold the ends of the hydraulic lines behind the cab.

http://i1322.photobucket.com/albums/...ps7ggfaanc.jpg

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

http://i1322.photobucket.com/albums/...psdl9mgyf6.jpg

cheers andy

Re: JBC limited NZ
 

just some outside shots , paint finished but still a little soft.

play time tonight as it should be baked nicely in the sun


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

http://i1322.photobucket.com/albums/...psctm4lef3.jpg

http://i1322.photobucket.com/albums/...psow1u1uvf.jpg

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

http://i1322.photobucket.com/albums/...pssly77vc8.jpg

http://i1322.photobucket.com/albums/...psgxj9wtfc.jpg

need to make a few air vents for the top sides of the engine cover, will do that on the printer and just glue on for looks. :D

now to finish of the KAT and start digging.

cheers andy

Re: JBC limited NZ
 

Quite a transformation! Great job :jaw:

Re: JBC limited NZ
 

Absolutely agree. it's hard to spot any old 4200 and has now become a very nice hard rock mining shovel. Nice work Andy, I'm jealous but also motivated to tweak mine a bit, thanks! :D

Re: JBC limited NZ
 

Looking great Andy! By the way, did you find a Hemi yet?

Re: JBC limited NZ
 

Yeah .
found a couple that im realy keen on , gota wait for the guy to inspect and make a decision.
wife wants a 69 mustang so will do a double container and ship them both back home.
then we will fight over shed space.:D

cheers andy

Re: JBC limited NZ
 

Andy you have truly transformed that 4200 into a beautiful machine great job

Re: JBC limited NZ
 

Haha, yes my wife has wanted a new Cadillac for a while now and when it happens there will definitely be a fight over garage space here. Our garage is full already(too small) so I guess something of mine will get the boot. What engine are you looking to have in the Mustang? Big block?

Re: JBC limited NZ
 

this is going to sound stupid, she wants the looks of the mustang
but she is talking about a 6 cylinder model.?????

now if that is what she wants to pay for Im not going to argue ...

but I may try and talk her into a 289, at least that way once its here we can upgrade it to a bigger motor legally ,due to NZ's over protective vehicle modification rules

cheers andy

Re: JBC limited NZ
 

no digging with the 4200 as we were rudely interrupted by guests bringing beer and steaks.
so dragged the old go cart out and taught the wife what more power means:D

http://i1322.photobucket.com/albums/...pszvxgjna7.jpg

a few sore heads this morning but no one is dead , so all good.

Re: JBC limited NZ
 

Oh that's good. The Big block Mustangs are a pain to work on. Pretty much have to pull half the car apart to remove a valve cover let alone do any serious work.lol A 289 or straight 6 will leave some room for your hands between the shock towers at least.

It looks like the carting was fun as well! Friends only show up at our place when they want something....

Re: JBC limited NZ
 

so, with the 4200 nearing being finished , I stopped working on it and started to finish the thumb for the KAT .
I used a 8mm stainless tube and slid a 5mm solid shaft inside to make a fake cylinder , welded a couple of nuts on the ends.
I drilled a couple of holes in the shaft and used a clip of an old rc car to hold it in place, seems to work.

painted and done.

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

http://i1322.photobucket.com/albums/...psvlhuhcj2.jpg

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

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

and because I had some paint left over , I decided to paint the cylinders and the 4200, two more to go.

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

cheers andy

Re: JBC limited NZ
 

Hey Andy looking good just one question why a John Deere sticker on a Hitachi?

Re: JBC limited NZ
 

because im cheap and bought a JD excavator and stole the cab :D

that will be covered in the near future.

time to get the 4200 dirty,

https://youtu.be/VyOc9qi3P2Y

cheers andy

Re: JBC limited NZ
 

had a play with movie maker and made a quick video of some slow motion stuff, turn the sound up, amazing what you miss .:eek:

https://youtu.be/mJ7NViEBdHw

cheers andy

Re: JBC limited NZ
 

sorry Joe but I stole your idea.
been sitting on night shift for the last 4 nights, and your grinder attachment was giving me ideas on how to build the cliff road.
way too hard to dig now but a grinder , now that might work.
Ive robbed the drive for my roller build ( it will be too slow but its the same size).
ive made a few shafts and cut on an angle and temporarily
glued a sprocket on.
(cant weld stainless with my mig today)
but it looks like it might do the job.

http://i1322.photobucket.com/albums/...psly96fxo8.jpg

http://i1322.photobucket.com/albums/...psg7zt6rel.jpg

http://i1322.photobucket.com/albums/...psdbbnvym3.jpg

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

cheers andy

Re: JBC limited NZ
 

just a quick test to see how strong the super glue holds before welding

https://youtu.be/k7iKFKHWg7I

seems to hold for a bit
cheers andy

Re: JBC limited NZ
 

DAGNABBIT ANDY :mad: :mad: :mad:


I KNEW I was over thinking this!!! :D :lol:

I like your idea muuuch better! much simpler, less moving parts & it looks like the Alpine cutter Neil posted a vid of. :cool:

So what's the rpm of this motor gearhead & where did you get it? To go higher rpm = less torque :thinking: What about just going with a bit bigger diameter sprocket?

And I really like how you attached the sprockets at an angle... Genius! :cool:

My grinder is going in the bin & I'm building one like this. ;)

Re: JBC limited NZ
 

yeah, watched too many cutter head videos over the last shift.

it is a 35rpm motor box at the moment, looking at probably three times the head speed for the new set up.

I got the gearbox motor set up from aliexpress , but this is the one Im thinking of getting, do You recon it will be fast enough.
http://www.aliexpress.com/item/DC-12...300876671.html



I really didn't know if it would work , but it looks like it will work like the alpine ones on you tube and the sprockets will achieve the same thing, so we will see what happens


cheers andy

Re: JBC limited NZ
 

Great! thanx for the link. Do they do PayPal? Check tomorrow to see what rpm my gizmo is running at... your current sprockets, are they 25mm diameter?

So what's happening with your jaw crusher? I thought we'd be seeing an action video long before now :confused:

Re: JBC limited NZ
 

no, pay pal is not an option.
get one from someone who has had lots of good feed back and all should be good.
the sprockets, I think they are 15 tooth, may be 50mm diameter sprockets, the hole grinder is only about 150mm long and I thought about scale, for a bit........used what I had.
If I add another sprocket on each side it will double the work load, and hope fully not the heat...

Re: JBC limited NZ
 

Found something similar on ebay, maybe it'll show up before xmas.

http://www.ebay.com/itm/321614113867

Re: JBC limited NZ
 

that looks the same as mine and I think the rpm's will be better.
as for the crusher , that was supposed to be the next job until I saw your grinder attachment.
so you will just have to wait until im done with my grinder LOL.
good thing is now that the roller has been gutted of parts for the grinder I now have all the rc parts I need to make the crusher mobile, but still have to make some adjustable motor brackets for the crusher because I cant find the right size belts.
one day it will happen, but for now its summer and I really want to make a start on the cliff road with my grinder.

cheers andy

Re: JBC limited NZ
 

did a little more on the grinder,
I have shortened the collars on the sprockets to get them in closer to the head, and it should work better closer together.
and of course I have painted it before its finished, made a few brass brackets to hold wiring but a few more to do yet.

I think I will weld sprockets on and bore a hole through the sprockets so at a later date I can just put a shaft into the hole and add another set of sprockets if I need to.

pictures

http://i1322.photobucket.com/albums/...psdt7wqqjf.jpg

http://i1322.photobucket.com/albums/...pszo6hcwaq.jpg

cheers andy

Re: JBC limited NZ
 

more progress but a little slow.
made more brass brackets and fitted a solid line for the cables to power the grinder, and then run out of paint......:mad::mad:

Need to do something about the wires on the bottom arm as I think they look like C@#$p.
also want to widen the track base by about 15mm each side, will be easy enough to make some spacers up and longer bolts.
But that's a job for tomorrow

http://i1322.photobucket.com/albums/...psdkvewi4n.jpg

http://i1322.photobucket.com/albums/...psfsn8rgmr.jpg

cheers andy

Re: JBC limited NZ
 

today I finished the painting and cleaned up the cables on the bottom arm and installed two new toggle switches on the engine cover, 1 for the lights and the other for the grinder which is fused at 3amps.
also had to repaint the arms due to the new colour matched paint was different, spoke to the paint lady and she said sorry and gave me two cans for the price of one :D

Then I made up some spacers for the track bodies, 15mm wider on each side.
this has now caused me another problem, as it only just fits on the lowboy :o
I need to rewire the track motors now because the cables are too short, and I found out why I blew a track esc, wires way too short and shorted together :mad: :mad:
pictures.

http://i1322.photobucket.com/albums/...pspx5egpe3.jpg

http://i1322.photobucket.com/albums/...psh4gfzugs.jpg

wider track setup

http://i1322.photobucket.com/albums/...pssxl5uul0.jpg

and the problem Ive created :rolleyes:

http://i1322.photobucket.com/albums/...ps65vuz6dn.jpg

cheers andy

Re: JBC limited NZ
 

well Im back,
had a small problem with a truck load of lightning .
basically it blew all the telephone jack points off the wall, fried the big TV and all other associated electrical things on that circuit, melted the TV aerials, toasted the wifi modem ect ect.
the insurance company loves me now, but at least nothing caught fire.

So, with no internet or TV I headed to the shed.

have been playing around with the grinder and need to make a few changes, I need bigger sprockets as the motor bottoms out too soon when grinding, also ordered a quicker motor.
Will try the bigger sprockets first and see what happens.
heres a quick video of the grinder at work, and a little taster of another idea I had, this needs some more internal work and more speed , but I think I can get it to work


https://youtu.be/FiQGex7iBOU

cheers andy

Re: JBC limited NZ
 

Andy, your video's marked private.

Re: JBC limited NZ
 

I suppose it helps if I click on the publish button :D

Re: JBC limited NZ
 

Welcome back and glad to hear all is well after the fireworks and all. :eek:

The grinder definitely needs larger diameter sprockets but I don't think you'll need to up the speed. Can you also maybe change the bottom of the drive from a flat surface to something more knife edge or tapered a bit.

How much larger of sprockets are you thinking of using?

The hammer, :cool: But you need more speed there for sure.:).
Keep it up, looks great!

Re: JBC limited NZ
 

cheers Mario,
bigger sprockets are a must, but cant change the flat surface as that's the bottom of the gear box.
I think I will look at another 10mm in diameter (60mm), I will see what they have on their shelf and its gota be cheap.
and the hammer, yes there is a lot of changes needed.

cheers andy

Re: JBC limited NZ
 

had to rebuild the road I destroyed with the grinder, so took a little time and had a play while thinking about different ways to do the hammer.

https://youtu.be/J8YzG0Wbsvo

cheers andy