8110 - Unimog - MODs and Improvements

[__________________________]

i have implemented my variosteering idea in the base of my cab

Cool! I'd like to implement this into an RC racing Unimog, stripped-down.

[Pat-Ard]

Is it just me, or are your quotes a little confusing, The LegoExpert?

[__________________________]

Is it just me, or are your quotes a little confusing, The LegoExpert?

What's confusing?

[Pat-Ard]

Your guotes 1674, 1675 and 1676... For me they don't make sense...

[__________________________]

https://www.dropbox.com/s/3n3bgmrmgn9kbh9/Unimog.lxf?m=

I'm working on stripping unnecessary components (crane, winch, etc.), adding a roll cage (any help?), redesigning the suspension, etc.

Due to the decreased weight, gear ratios should be changed, which I hear is impossible with the portal hub setup. Also, could someone simply explain the steering problem? I tried the Technicbricks explanation.

Thanks and have a good day!

[Pat-Ard]

OK... Take a look at this picture, there's a rollcage for a U400

There are some ways to enhance the steering... I think all in this thread...

Pat

[__________________________]

OK... Take a look at this picture, there's a rollcage for a U400

There are some ways to enhance the steering... I think all in this thread...

Pat

Thanks! i'll also build it going diagonally down the Mog's bed. Cool snow chains (;

[Jason4x4]

Hello everyone . I have built a 3 point hitch for the unimog . And made a trailer hitching system that looks realistic works realistically . And uses minimum parts . I really what to sow it but I have no coking clue how to post pics . Thanks very match

[Paul B Technic]

You need to host the pictures on a hosting site and then post them here. I post mine on my blog.

[Jason4x4]

Thanks very much for the help . Busy setting up the Dropbox . Hear is a you tube video on the 3 point hitch and the trailer tow bar :-)

http://youtu.be/aSwhDO8oMuQ

My mog https://www.dropbox.com/s/7jmp0y2r9m5med6/Photo%202013-05-19%2C%207%2003%2022%20PM.jpg

[__________________________]

Thanks very much for the help . Busy setting up the Dropbox . Hear is a you tube video on the 3 point hitch and the trailer tow bar :-)

http://youtu.be/aSwhDO8oMuQ

My mog https://www.dropbox.... 7 03 22 PM.jpg

Cool mod! Haven't seen a Mog with a hitch like this before (;

[Paul B Technic]

Over the weekend I have designed and built a rear mounted loading arm for LEGO Technic set 8110 - Unimog U400.

Details on this, photos and a video of it in use can be found on my blog:

http://paulstechnic.blogspot.com.au/2014/06/unimog-u400-rear-loading-arm.html

[Pat-Ard]

Nice attachments you both made!

Pat

[Paul B Technic]

Nice attachments you both made!

Pat

Thanks, I have ideas for a couple more I will build as I get the time.

[Ichitakap]

here is my steering solution, just used the new steering servo. removed a few beams and tada!!

it works great, even when the model is not moving.

Even has full suspension travel like before.. only problem i need to fix is that the front axle assy is one stud further to the front and rubs when turning when the crane is attached to the front.

Hi all, i am new to here, it is a nightmare to put this servo motor in this part? I don't want to disassemble the whole thing -.-

[Pat-Ard]

Hi Ichitakap,

no, i wouldn't say that it is a nightmare. You have to change some small things on tje front axle and in my solution two or three beams in the main frame...

All in all about half an hour of work...

Pat

P.S.: And welcome to EB.

Edited June 16, 2014 by Pat-Ard

[afol1969]

Hi all, i am new to here, it is a nightmare to put this servo motor in this part? I don't want to disassemble the whole thing -.-

First: Welcome to EB

Sometimes you are forced to disassemble the complete chassis to make the modifications, I'd to do it three times before I finally finished the instructions from Marcus53s' model.

@Pat-Ard: Do you have an LFX-file or some more photos from the front axle? If so, I can add the modifications in the instructions.

Greetings

Alex

[Pat-Ard]

Hi alex,

some more posts further I posted pictures of my servoe modifications...

I don't have a lxf...

Pat

[Paul B Technic]

I have made some changes to this and have uploaded new photos and a new video:

http://paulstechnic.blogspot.com.au/2014/06/unimog-u400-rear-loading-arm.html

[Paul B Technic]

I have just published my latest attachment for the Unimog U400 to my blog. A front mounted lawn mower attachment. This includes photos and a video of it in use:

http://paulstechnic.blogspot.com.au/2014/06/unimog-u400-set-8110-lawn-mower.html

[Alasdair Ryan]

I have just published my latest attachment for the Unimog U400 to my blog. A front mounted lawn mower attachment. This includes photos and a video of it in use:

http://paulstechnic....lawn-mower.html

Nice job Paul,how about adding a guard around it using black panels or beams?

[Paul B Technic]

Nice job Paul,how about adding a guard around it using black panels or beams?

Thanks for the feedback, after I finish my latest MOC (not a Unimog attachment this time) I will go back and see what I can do to improve this :)

[Kumbbl]

Here is my modified Unimog - a compilation of several already existing MODs or at least inspired from them...

1. Pneumatic driven bed which can be tilted to all 3 sides:

It is strongly inspired by the driven 3-side beds of eurobricks members barman and tripletschiee - many thanks to both of you for your very well done solutions! :thumbup:

Here are some details:

The rotary cylinder base (inspired from barman but not sure if he uses 100% the same solution because neither his nor tripletschiees pictures of the cylinder base show many details - anyway: my solution works very well...)

(The long black axle is also the mounting of the new double pump - s.b.)

The connection to the bed (completely "stolen" from tripletschiee, a very simple and intelligent solution )

The 3-side/locking mechanism (dito tripletschiee ) - with the LBG handles left and right you can enable the tilting side:

Mounting the locking mechanism to the chassie:

The pneumatic valve for bed tilting (completely my own solution - i wanted the full Unimog handling on the same side):

Cause of this feature i had to discard placing the battery box in the middle of the back wall of the bed (for better balancing of the Unimog)... but it was worth it ;-) - Currently i'm thinking about adding a train weight (73090a) on the motor side to enhance the weight balance of the Mog - but i'm not sure if the effect will be worth it...

2. Steering modifications:

There are two problems which needed being fixed:

a) better steering lock/angle: This can be done by replacing the 4 3/4 pins (DBG) by 4 1/2 pins (LBG). Removing the pins completely is not the best solution because then the tires can rub on the chassis when suspension is compressed and you will steer...

b) making the steering easier - out of the box it is way to hard - this is not only cause of the high friction of the tires but also cause of 4 red friction pins involved. In addition the whole front axle has a strong bump steer. well, i have tried several solutions:

- Nicjasnos complete new front axle: this one has by far the best suspension and steering and reduces the bump steer a lot. BUT: it looks to bulky and therefore the look isn't realistic for a Unimog... therefore i have discarded it after building, installing and testing

- applying the full fix of Junkstyle Gio (http://www.eurobrick...1) which replaces all 4 friction pins with frictionless-replacements: this makes the steering indeed very easy but on the other side now each grain of dust colliding with a front wheel can change the steering angle...it's too easy..

Therefore i have applied only the half of the fix of Junkstyle Gio so its a mixture of friction and frictionless pins --> IMHO is the best compromise of easyness and stability for the steering and the look of the front-axle:

well done fixing ideas of Junkstyle Gio :thumbup:

3. working steering wheel

Here i have 99% applied the solution of tripletschiee, simply because it works like a charm and is very well integrated in the cabin :thumbup:

here are some details, especially of the mounting of the orange panels on the steering side (cause of the geartrain for the working steering wheel you can not use the mounting shown in the BI):

4. Double pump

IMHO the single pump is a little weak driving the crane of the Unimog. Cause of the tilting bed i have no internal room for an air tank - so i have doubled up the pump of the compressor. Now there is plenty of air power to drive any attachment. As a side effect this prevents the kind of rattling noise coming from the pump (From technicbricks: "I guess the air should start to leak somewhere. Likely from the pump seals, as the generated resistance is not enough to stop or even slow down the PF M-motor") - when using a double pump the generated resistent is enough to stop the motor afgter ~ 2 or 3 spins if no operation of any of the cylinders takes place - which is IMHO a good effect (at least if it lasts not longer than some seconds). As the picture below shows it is quite obvious how to install the second pump - but the mounting has to be integrated with the rotary cylinder base of the tilting bed)

5. Using a PF switch

switching direction via battery box is always a pain --> therefore i have added a PF switch - IMHO quite well integrated (and nowhere stolen ;-)

here the detail shot for the needed change on the cabin to add mounting points for the switch:

Overall i'm now quite satisfied with air-power, steering, suspension, looks, playablitiy and features...

More pictures can be found in my bricksafe-Folder: http://bricksafe.com...ODs/8110 Unimog

EDIT: Just replaced the links to brickshelf by bricksafe

Edited August 29, 2014 by Kumbbl

[Appie]

I'd like to thank you very your very detailed pictures. Few weeks ago I already ordered an extra pump for the bed, but never got around to installing it and I wasn't even sure how I would install it, but you provided a very good way for me to do so. Love your other mods like the switch, double pump and functional steering wheel too, might use those too

Of course also a big thanks to those people whose MODs made or helped some of yours.

[Kumbbl]

Thanks, but the real thanks have to go to the named builders.. my own merits are mainly investing some brain power to re-engineer the bed from some not always meaningful pictures (but obviously they were good enought ;-) and to make some more detailed pictures of the involved new components...