Hello Roto

[Alasdair Ryan]

Hello all,as my harvester nears completion its time to start on my next project ready for the uk lego show i hope to go to in May.

Some functions:

4x4 drive

3 stearing modes

auto stabilizing legs

and much more...............

Some progress (i am still working on it so i know i need to make some more changes to it)

Big thanks to Allanp for helping me with the steering axles!

Edited February 18, 2012 by Alasdair Ryan

[jorgeopesi]

4x4 drive with 3 steering modes, long ago I tried it on a crane but I hadn´t bricks enough, I am looking forward for your news...

Edited February 18, 2012 by jorgeopesi

[Alasdair Ryan]

Yes the steering part is finished. (i hope )

I did not do any gearing on the steering so i hope it works ok. ( i am sure it will )

Edited February 18, 2012 by Alasdair Ryan

[bb15080]

Looks good so far

[jorgeopesi]

Big turntables on wheels... maybe you use the 8448 wheel with the 8297 tire?.

[Alasdair Ryan]

No i plan to use a set off the off roader wheels (balloon tires) if that does not work i have also ordered unimog tires.

[Alasdair Ryan]

Quick update, i made a new gearbox for some of the functions,the last one was not wide enough for the shafts to merge with the inside of the turntable.(driving rings)

Two gearboxes down one to go but that goes on the upper part.

Edited February 19, 2012 by Alasdair Ryan

[allanp]

Looks great so far! It's hard to see in the pics, have you included the planetary gear reduction in the turntables/wheel hubs?

[Alasdair Ryan]

Looks great so far! It's hard to see in the pics, have you included the planetary gear reduction in the turntables/wheel hubs?

Yeb ( i think so any way. )

Edited February 19, 2012 by Alasdair Ryan

[timslegos]

Progress looks great so far. its good to hear that the harvester is almost done .

tim

[allanp]

Yeb ( i think so any way. )

Are you sure, looks like the turntables are the wrong way round

[dfs473]

nice chassis and a good suspension

Well done

[Alasdair Ryan]

Hang on an i will take a pic.

Edit:

I have tested it and it does turn.

Edited February 19, 2012 by Alasdair Ryan

[allanp]

Hang on an i will take a pic.

Edit:

I have tested it and it does turn.

Yes but do you have any gear reduction? You are supposed to have a 1:4 gear reduction.

[Alasdair Ryan]

I am puting a reduction on when it goes to the diff (xl - 6th - 24 (diff) then the the axles.

Edited February 19, 2012 by Alasdair Ryan

[allanp]

I am puting a reduction on when it goes to the diff (xl - 6th - 24 (diff) then the the axles.

Oh I see, well try not to strain the UJs too much

[dhc6twinotter]

Alasdair, your project is looking good! Nice and complex!

Your planetary hub design is very compact. And, yes, the turntable is pointed in the correct direction for gear reduction (I just double-checked the planetary gears on my backhoe and forwarder).

Nice work so far!

Edited February 20, 2012 by dhc6twinotter

[Alasdair Ryan]

Alasdair, your project is looking good! Nice and complex!

Your planetary hub design is very compact. And, yes, the turntable is pointed in the correct direction for gear reduction (I just double-checked the planetary gears on my backhoe and forwarder).

Nice work so far!

Ah thanks very much i think my project will be a lot harder than ether of your moc's.

[Alasdair Ryan]

Well I thought you may want a small update,I have redesigned the whole model.

There is two separate gearboxes on the lower part one for the drive,legs, power to the steering as well as to power the boom functions.

The other gearbox is to select the steering functions.

In the picture below you can see the general layout.

I dare say it while be a while again to the next update....

[dhc6twinotter]

Looking good!

[Alasdair Ryan]

Looking good!

Thank you Daniel.

[Junpei]

What kind of steering modes does it have? Awesome model so far!

[Alasdair Ryan]

What kind of steering modes does it have? Awesome model so far!

Front

Front - Rear

Crab

[Rishab N]

Looks really complex!

[Alasdair Ryan]

Yes it is,but that is one of the main reasons why I prefer building machinery over something like a car or a 4x4.

But this model is nowhere near as complex as what my other moc up the road.