JBC limited NZ

[andyathome]

just a quick video loading a bruder tipper, need to RC this some day.

http://youtu.be/MIYaa5LA4rA

[andyathome]

it was time for a bit of maintenance on the junk rock truck as the swivel was sagging , the steering wasn't working too flash and the tipper set up was very sad.

I made up a new dual layer swivel joint .
I made a new set up for the tipper motor and used a universal joint on the screw drive.
I made a cover to protect the tipper motor.
rerouted the drive motor cables under the truck and into the bottom of the cab.
I also filled all the holes in the chassis of the tipper frame.

as for the steering a 6rpm motor was fitted at the back of the cab and a couple of arms bolted to the right places and we have steering!

I found when the bed was loaded with 20kgs it struggled to get started lifting ( may be my geometry is a little off) SO I had a brain wave and made some fake rams to fit to the tipper.
They are filled with two 50mm long compression springs, so when all the way down( tipper bed) they are compressed, this gives that little bit extra and make the lift start easier.

now its off to paint and back to work.

new swivel joint


full steering lock


tipper 2/3rds up


and how I made the rams, once the springs are decompressed on the up lift the rod just follows the screw drive.


next possible plan is to put some motors in and drive the front wheels.
but first its paint and put it to work.

cheers andy

[chris deacon]

Hiya Andy. Sorry for yet another question but what cab have you put on your 4200? I want to convert my machine a little so it looks like a 1/14th scale machine.
Cheers

[andyathome]

Hi . Its a cheap ebay special john deere excavator kids toy cab.

cheers andy

[chris deacon]

the signal reverse lead on your 4200...did that come with the module?

[chris deacon]

Also did you have to fit your own plugs and how many y leads did you use?
cheers chris

[andyathome]

Hi.
I used two y plugs and a reversing lead.
get a reversing lead with an adjustment pot that way you can control max engine rev noise.
otherwise when a couple of stick movement it will be reving realy hard and dosent sound right.

cheers andy

[chris deacon]

where did you find one of them???? i been searching but i cant find one?

[andyathome]

just rang the hobby shop and told them what i needed, it turnned up a couple of days later.
I find its eaiser to talk to a sales person, not everything is on the net.

[chris deacon]

Cheers for the help Andy.. I got the same module on the way... also got a DX9 coming too..

[andyathome]

had a little spare time so have had a go at printing up a cage for the excavator cab, not the best but a few mods and it wont look too bad.

have also installed two sabertooth drives into the rock truck and tested, steering works fantastic and tipper really good.

just need a few days off to have some play time on the printer to make a new cab for the truck, have made a set of access stairs for the truck, they look OK,
more practice and play time needed.

cheers andy









cheers andy

[andyathome]

had some time for testing today due to bad weather.
need to swap out the tipper motor for a faster one, it lifts the load easily but too slow.

https://youtu.be/43fAmasc1OU

[andyathome]

well , its almost winter here in New Zealand and the outside digging is not so much fun, so another project I have wanted to build has been started.
A rock crusher.
I have made the crusher box out of 6mm steel and used a 10mm round bar drilled off set to make a cam, made a crusher plate and tested.
hooked up a battery drill and crushes a beer bottle cap no worries.
heavy duty springs at the bottom of the crushing plate give me a little movement and a bit of adjustment.
It will have its own tracked drive system but will have a generator ( battery box ) to power the two conveyors and the crusher motor.

I may need to use bigger flywheels but that will be an easy change. Once all functioning I will fire up the 3d printer and give it some detail, but the main concern will be function.
I will also make some new crushing plates out of stainless steel which should last longer.
Heres todays progress.










cheers andy

[doodlebug]

Nice start on the crusher!

[andyathome]

thanks man.

got a little more done today,
still unsure which end to power the conveyor, but Im leaning towards the back end, also its getting a little high so im guessing when it comes to mounting the tracks I will have to do a bit of hacking , go a little wider to maintain the same height..
got a couple more days off so hope fully I will get the front half mocked up and second conveyor fitted up.
I will get it running and then look at how I fit the track drives.

heres some progress pictures







cheers andy

[andyathome]

and one to show size compared to excavator.

[andyathome]

today's activities,

spent a whole lot of time achieving not a lot.

ran out of slitter blades so no body panels made , so started to fit up track motors and a little tidy up of the welds.
have figured out how i will do the conveyors and vibrating motor for hopper. main motor for crusher is still a little fuzzy but I have a welder.
heres today's progress.








cheers andy

[andyathome]

spent a little more time in the shed today.have the bottom conveyor all mounted up and managed to get the second conveyor almost done.
hope fully the rocks will be travelling fast enough to be thrown onto the second conveyor.
need to make a few more bearing blocks and make up a mount for the winch to raise and lower the out feed conveyor.
not far off testing ....

todays progress





cheers andy

[Supermario]

I am loving this build Andy! And thanks for taking the time to share with us. Your moving along so fast, making me feel guilty for time spent on the couch! i need to get back building and your really helping to motivate me.

The transition to the second conveyor does look tricky. Definitely need some speed on the first to throw material. Could you elevate the end of the first conveyor a bit, lower the second and slip under so you have a straight drop?

[andyathome]

hi ya.
looked at lots of options, not too many choices due to space and height constraints.
I need to make a smaller last roller on the 1st conveyor and have made the 1st roller of the outfeed conveyor 3/4 the size.
It will give me about a 20mm drop , so when its up and running i will be able to adjust speed electronicaly to get the throw about right.
at least thats the plan so far. LOL.

cheers andy